SIO: HEIDI (07U/06S) - Tropical Cyclone
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HURAKAN
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Re:
CrazyC83 wrote:Were the 987 and 60 kt concurrent? If so, the pressure was likely 980mb. Also if that is 10-min sustained, the actual intensity was likely 65-70 kt.
here's the link: http://www.bom.gov.au/products/IDW60801 ... 4310.shtml
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HURAKAN
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Re: SIO: HEIDI (07U/06S) - Tropical Cyclone
WTXS31 PGTW 111500
MSGID/GENADMIN/NAVMARFCSTCEN PEARL HARBOR HI/JTWC//
SUBJ/TROPICAL CYCLONE 06S (HEIDI) WARNING NR 004//
1. TROPICAL CYCLONE 06S (HEIDI) WARNING NR 004
01 ACTIVE TROPICAL CYCLONE IN SOUTHIO
MAX SUSTAINED WINDS BASED ON ONE-MINUTE AVERAGE
WIND RADII VALID OVER OPEN WATER ONLY
---
WARNING POSITION:
111200Z --- NEAR 19.6S 118.9E
MOVEMENT PAST SIX HOURS - 195 DEGREES AT 04 KTS
POSITION ACCURATE TO WITHIN 025 NM
POSITION BASED ON CENTER LOCATED BY A COMBINATION OF
SATELLITE, RADAR AND SYNOPTIC DATA
PRESENT WIND DISTRIBUTION:
MAX SUSTAINED WINDS - 055 KT, GUSTS 070 KT
WIND RADII VALID OVER OPEN WATER ONLY
RADIUS OF 050 KT WINDS - 030 NM NORTHEAST QUADRANT
030 NM SOUTHEAST QUADRANT
030 NM SOUTHWEST QUADRANT
030 NM NORTHWEST QUADRANT
RADIUS OF 034 KT WINDS - 060 NM NORTHEAST QUADRANT
050 NM SOUTHEAST QUADRANT
050 NM SOUTHWEST QUADRANT
050 NM NORTHWEST QUADRANT
REPEAT POSIT: 19.6S 118.9E
---
FORECASTS:
12 HRS, VALID AT:
120000Z --- 20.8S 117.9E
MAX SUSTAINED WINDS - 045 KT, GUSTS 055 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 24 HR POSIT: 215 DEG/ 08 KTS
---
24 HRS, VALID AT:
121200Z --- 22.2S 116.9E
MAX SUSTAINED WINDS - 030 KT, GUSTS 040 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATING AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
VECTOR TO 36 HR POSIT: 215 DEG/ 08 KTS
---
36 HRS, VALID AT:
130000Z --- 23.6S 115.9E
MAX SUSTAINED WINDS - 025 KT, GUSTS 035 KT
WIND RADII VALID OVER OPEN WATER ONLY
DISSIPATED AS A SIGNIFICANT TROPICAL CYCLONE OVER LAND
---
REMARKS:
111500Z POSITION NEAR 19.9S 118.6E.
TROPICAL CYCLONE (TC) 06S (HEIDI) LOCATED NEAR 19.6S 118.9E,
APPROXIMATELY 45 NM NORTH-NORTHEAST OF PORT HEDLAND, AUSTRALIA, HAS
TRACKED SOUTH-SOUTHWESTWARD AT 04 KNOTS OVER THE PAST 06 HOURS.
ANIMATED INFRARED SATELLITE IMAGERY SHOWS THE SYSTEM BECOMING MORE
TIGHTLY WOUND AND CONVECTION GATHERING MORE DIRECTLY OVER THE TOP OF
THE SYSTEM. SURFACE OBSERVATIONS FROM BEDOUT ISLAND VERIFY AN
INTENSITY OF 55 KNOTS, WHICH MATCHES DVORAK ASSESSMENTS FROM KNES
AND APRF. AN 111041Z SSMIS IMAGE COMPARED WITH A PREVIOUS PASS
INDICATES THAT THE SYSTEM HAS PEAKED AND THE LOW LEVEL BANDING IS
BECOMING LESS CONCENTRIC. TC 06S IS TRACKING ALONG THE SOUTHWESTERN
PERIPHERY OF THE LOW- TO MID-LEVEL SUBTROPICAL RIDGE THROUGH AN AREA
OF 30 DEGREE SEA SURFACE TEMPERATURES AND LOW VERTICAL WIND SHEAR
AND WILL MAKE LANDFALL DURING THE NEXT 6 TO 10 HOURS BETWEEN PORT
HEDLAND AND POINT SAMSON. AS TC 06S TRACKS INLAND, VERTICAL WIND
SHEAR WILL ALSO INCREASE SHARPLY. MEANWHILE, SOUTHEASTERLY FLOW IN
THE BOUNDARY LEVEL WILL FORCE THE LOW LEVEL CIRCULATION CENTER TO
THE WEST. THE COMBINATION OF BOUNDARY LEVEL SOUTHEASTERLIES AND
NORTHWESTERLIES ALOFT WILL RESULT IN THE SYSTEM DE-COUPLING AND
DISSIPATING TO BELOW TROPICAL CYCLONE INTENSITY SHORTLY AFTER TAU
24. MAXIMUM SIGNIFICANT WAVE HEIGHT AT 111200Z IS 12 FEET. NEXT
WARNINGS AT 120300Z AND 121500Z.//
NNNN
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HURAKAN
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TROPICAL CYCLONE ADVICE NUMBER 16
Issued at 11:54 pm WST on Wednesday 11 January 2012
A Cyclone WARNING is now current for coastal areas from Wallal to Dampier,
including Port Hedland, Roebourne, Karratha and Dampier, and extends to
adjacent inland parts.
At 12:00 am WST Tropical Cyclone Heidi, Category 2 was estimated to be
50 kilometres north northeast of Port Hedland and
225 kilometres east northeast of Karratha and
moving south southwest at 10 kilometres per hour towards the coast.
Tropical Cyclone Heidi remains a category 2 system as it tracks south-southwest
towards the Pilbara coast. Gales with gusts to 120 kilometres per hour are
occuring in coastal areas between Port Hedland and Whim Creek. Destructive
winds with gusts to 155 kilometres per hour are developing along the coast
between Pardoo and Port Hedland, and should extend west towards Whim Creek
during Thursday morning as the cyclone crosses the coast. Gales with gusts to
100 kilometres per hour may extend west to Dampier during Thursday morning if
the cyclone takes a more southwesterly track, and into the adjacent inland
parts of the central Pilbara.
The heaviest rainfall is expected to the east and south of the system. Rainfall
totals of 100-250mm are possible across the central and eastern Pilbara. Refer
to Flood Advices for further details.
Residents in and near Port Hedland and east to Wallal are specifically warned
of the potential of a DANGEROUS STORM TIDE as the cyclone centre crosses the
coast early on Thursday morning. Tides are likely to rise significantly above
the normal high tide mark with dangerous flooding of low-lying areas.
Tides elsewhere in the Pilbara should also be higher than normal.
RED ALERT: People in or near coastal and inland communities between Pardoo and
Whim Creek, including the communities of Pardoo, Port Hedland, South Hedland,
and Whim Creek, need to go to shelter immediately.
BLUE ALERT: People in or near coastal and inland communities between Whim Creek
and Dampier, including the communities of Roebourne, Pt Samson, Karratha, and
Dampier need to prepare for cyclonic weather and organise an emergency kit
including first aid kit, torch, portable radio, spare batteries, food and water.
Details of Tropical Cyclone Heidi at 12:00 am WST:
.Centre located near...... 19.9 degrees South 118.8 degrees East
.Location accuracy........ within 20 kilometres
.Recent movement.......... towards the south southwest at 10 kilometres per hour
.Wind gusts near centre... 155 kilometres per hour
.Severity category........ 2
.Central pressure......... 975 hectoPascals
The next advice will be issued by 1:00 am WST Thursday 12 January.
Issued at 11:54 pm WST on Wednesday 11 January 2012
A Cyclone WARNING is now current for coastal areas from Wallal to Dampier,
including Port Hedland, Roebourne, Karratha and Dampier, and extends to
adjacent inland parts.
At 12:00 am WST Tropical Cyclone Heidi, Category 2 was estimated to be
50 kilometres north northeast of Port Hedland and
225 kilometres east northeast of Karratha and
moving south southwest at 10 kilometres per hour towards the coast.
Tropical Cyclone Heidi remains a category 2 system as it tracks south-southwest
towards the Pilbara coast. Gales with gusts to 120 kilometres per hour are
occuring in coastal areas between Port Hedland and Whim Creek. Destructive
winds with gusts to 155 kilometres per hour are developing along the coast
between Pardoo and Port Hedland, and should extend west towards Whim Creek
during Thursday morning as the cyclone crosses the coast. Gales with gusts to
100 kilometres per hour may extend west to Dampier during Thursday morning if
the cyclone takes a more southwesterly track, and into the adjacent inland
parts of the central Pilbara.
The heaviest rainfall is expected to the east and south of the system. Rainfall
totals of 100-250mm are possible across the central and eastern Pilbara. Refer
to Flood Advices for further details.
Residents in and near Port Hedland and east to Wallal are specifically warned
of the potential of a DANGEROUS STORM TIDE as the cyclone centre crosses the
coast early on Thursday morning. Tides are likely to rise significantly above
the normal high tide mark with dangerous flooding of low-lying areas.
Tides elsewhere in the Pilbara should also be higher than normal.
RED ALERT: People in or near coastal and inland communities between Pardoo and
Whim Creek, including the communities of Pardoo, Port Hedland, South Hedland,
and Whim Creek, need to go to shelter immediately.
BLUE ALERT: People in or near coastal and inland communities between Whim Creek
and Dampier, including the communities of Roebourne, Pt Samson, Karratha, and
Dampier need to prepare for cyclonic weather and organise an emergency kit
including first aid kit, torch, portable radio, spare batteries, food and water.
Details of Tropical Cyclone Heidi at 12:00 am WST:
.Centre located near...... 19.9 degrees South 118.8 degrees East
.Location accuracy........ within 20 kilometres
.Recent movement.......... towards the south southwest at 10 kilometres per hour
.Wind gusts near centre... 155 kilometres per hour
.Severity category........ 2
.Central pressure......... 975 hectoPascals
The next advice will be issued by 1:00 am WST Thursday 12 January.
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1200 UTC:
IDW27600
TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - WESTERN REGION
Issued by PERTH TROPICAL CYCLONE WARNING CENTRE
at: 1245 UTC 11/01/2012
Name: Tropical Cyclone Heidi
Identifier: 07U
Data At: 1200 UTC
Latitude: 19.5S
Longitude: 118.9E
Location Accuracy: within 15 nm [30 km]
Movement Towards: south [190 deg]
Speed of Movement: 6 knots [10 km/h]
Maximum 10-Minute Wind: 55 knots [100 km/h]
Maximum 3-Second Wind Gust: 75 knots [140 km/h]
Central Pressure: 980 hPa
Radius of 34-knot winds NE quadrant: 50 nm [95 km]
Radius of 34-knot winds SE quadrant: 50 nm [95 km]
Radius of 34-knot winds SW quadrant: 50 nm [95 km]
Radius of 34-knot winds NW quadrant: 50 nm [95 km]
Radius of 48-knot winds NE quadrant: 20 nm [35 km]
Radius of 48-knot winds SE quadrant: 20 nm [35 km]
Radius of 48-knot winds SW quadrant: 20 nm [35 km]
Radius of 48-knot winds NW quadrant: 20 nm [35 km]
Radius of 64-knot winds:
Radius of Maximum Winds:
Dvorak Intensity Code: T3.5/3.5/D1.0/24HRS STT:S0.0/6HRS
Pressure of outermost isobar: 1002 hPa
Radius of outermost closed isobar: 120 nm [220 km]
Storm Depth: Deep
FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
[UTC] : degrees : nm [km]: knots[km/h]: hPa
+12: 12/0000: 20.6S 118.1E: 045 [085]: 040 [075]: 990
+24: 12/1200: 21.8S 116.9E: 075 [140]: 025 [045]: 997
+36: 13/0000: 23.0S 116.4E: 110 [200]: 025 [045]: 999
+48: 13/1200: 24.4S 115.5E: 140 [260]: 025 [045]: 999
+60: 14/0000: 25.8S 115.7E: 190 [350]: 025 [045]: 998
+72: 14/1200: : : :
REMARKS:
Tropical Cyclone Heidi has remained category 2 over the last few radar images
and satellite passes, indicating an intensity of 55 knots.
Latest image DT of 4.0 based on embedded centre pattern but time-averaged DT is
3.5. A pattern adjusted MET is 3.5, yielding a FT and CI of 3.5. Observations
from Bedout Island confirm gale radius and 55 knot system.
Motion in last 6 hours is now south and is slowing, however forecast is still
for a more south southwesterly movement which should continue through to
landfall, most likely in the Port Hedland/Whim Creek region.
The system should maintain its intensity through to landfall and then weaken
rapidly. Shear has remained low, with latest forecast models indicating strong
shear will not be encountered until after landfall. Some indications of dry air
entrainment from the north but yet to show significant weakening.
Copyright Commonwealth of Australia
==
The next bulletin for this system will be issued by: 11/1900 UTC by Perth TCWC.
IDW27600
TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - WESTERN REGION
Issued by PERTH TROPICAL CYCLONE WARNING CENTRE
at: 1245 UTC 11/01/2012
Name: Tropical Cyclone Heidi
Identifier: 07U
Data At: 1200 UTC
Latitude: 19.5S
Longitude: 118.9E
Location Accuracy: within 15 nm [30 km]
Movement Towards: south [190 deg]
Speed of Movement: 6 knots [10 km/h]
Maximum 10-Minute Wind: 55 knots [100 km/h]
Maximum 3-Second Wind Gust: 75 knots [140 km/h]
Central Pressure: 980 hPa
Radius of 34-knot winds NE quadrant: 50 nm [95 km]
Radius of 34-knot winds SE quadrant: 50 nm [95 km]
Radius of 34-knot winds SW quadrant: 50 nm [95 km]
Radius of 34-knot winds NW quadrant: 50 nm [95 km]
Radius of 48-knot winds NE quadrant: 20 nm [35 km]
Radius of 48-knot winds SE quadrant: 20 nm [35 km]
Radius of 48-knot winds SW quadrant: 20 nm [35 km]
Radius of 48-knot winds NW quadrant: 20 nm [35 km]
Radius of 64-knot winds:
Radius of Maximum Winds:
Dvorak Intensity Code: T3.5/3.5/D1.0/24HRS STT:S0.0/6HRS
Pressure of outermost isobar: 1002 hPa
Radius of outermost closed isobar: 120 nm [220 km]
Storm Depth: Deep
FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
[UTC] : degrees : nm [km]: knots[km/h]: hPa
+12: 12/0000: 20.6S 118.1E: 045 [085]: 040 [075]: 990
+24: 12/1200: 21.8S 116.9E: 075 [140]: 025 [045]: 997
+36: 13/0000: 23.0S 116.4E: 110 [200]: 025 [045]: 999
+48: 13/1200: 24.4S 115.5E: 140 [260]: 025 [045]: 999
+60: 14/0000: 25.8S 115.7E: 190 [350]: 025 [045]: 998
+72: 14/1200: : : :
REMARKS:
Tropical Cyclone Heidi has remained category 2 over the last few radar images
and satellite passes, indicating an intensity of 55 knots.
Latest image DT of 4.0 based on embedded centre pattern but time-averaged DT is
3.5. A pattern adjusted MET is 3.5, yielding a FT and CI of 3.5. Observations
from Bedout Island confirm gale radius and 55 knot system.
Motion in last 6 hours is now south and is slowing, however forecast is still
for a more south southwesterly movement which should continue through to
landfall, most likely in the Port Hedland/Whim Creek region.
The system should maintain its intensity through to landfall and then weaken
rapidly. Shear has remained low, with latest forecast models indicating strong
shear will not be encountered until after landfall. Some indications of dry air
entrainment from the north but yet to show significant weakening.
Copyright Commonwealth of Australia
==
The next bulletin for this system will be issued by: 11/1900 UTC by Perth TCWC.
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HURAKAN
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Re: SIO: HEIDI (07U/06S) - Tropical Cyclone
Details of Tropical Cyclone Heidi at 3:00 am WST:
.Centre located near...... 20.2 degrees South 118.7 degrees East
.Location accuracy........ within 20 kilometres
.Recent movement.......... towards the south at 10 kilometres per hour
.Wind gusts near centre... 155 kilometres per hour
.Severity category........ 2
.Central pressure......... 975 hectoPascals
.Centre located near...... 20.2 degrees South 118.7 degrees East
.Location accuracy........ within 20 kilometres
.Recent movement.......... towards the south at 10 kilometres per hour
.Wind gusts near centre... 155 kilometres per hour
.Severity category........ 2
.Central pressure......... 975 hectoPascals
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HURAKAN
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Details of Tropical Cyclone Heidi at 4:00 am WST:
.Centre located near...... 20.3 degrees South 118.7 degrees East
.Location accuracy........ within 20 kilometres
.Recent movement.......... towards the south at 10 kilometres per hour
.Wind gusts near centre... 155 kilometres per hour
.Severity category........ 2
.Central pressure......... 975 hectoPascals
.Centre located near...... 20.3 degrees South 118.7 degrees East
.Location accuracy........ within 20 kilometres
.Recent movement.......... towards the south at 10 kilometres per hour
.Wind gusts near centre... 155 kilometres per hour
.Severity category........ 2
.Central pressure......... 975 hectoPascals
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TROPICAL CYCLONE ADVICE NUMBER 23
Issued at 7:06 am WST on Thursday 12 January 2012
A Cyclone WARNING is now current for coastal areas from Pardoo to Dampier
including Port Hedland, Roebourne, Karratha and Dampier, and extends to
adjacent inland parts.
The Cyclone WARNING from Wallal to Pardoo has been cancelled.
At 7:00 am WST Tropical Cyclone Heidi, Category 2 was estimated to be
35 kilometres south of Port Hedland and
180 kilometres east of Karratha and
moving south southwest at 11 kilometres per hour.
Tropical Cyclone Heidi crossed the Pilbara coast just to the east of Port
Hedland at around 4:30 am. Gales with gusts to 110 kilometres per hour are
occuring in areas between Port Hedland and Whim Creek. Destructive winds with
gusts to 130 kilometres per hour are possible close to the cyclone centre for
the next few hours.
There is a small chance that gales with gusts to 90 kilometres per hour may
extend west to Dampier during Thursday morning if the cyclone takes a more
southwesterly track.
Heavy rainfall is occurring near the system and rainfall totals of 100-250mm
are likely across the central and eastern Pilbara. Refer to Flood Advices for
further details.
Tides along the Pilbara coast will be higher than normal although the threat of
dangerous storm tide has now passed.
RED ALERT: People in or near coastal and inland communities between Pardoo and
Whim Creek, including the communities of Pardoo, Port Hedland, South Hedland,
and Whim Creek, need to go to shelter immediately.
BLUE ALERT: People in or near coastal and inland communities between Whim Creek
and Dampier, including the communities of Roebourne, Pt Samson, Karratha, and
Dampier need to prepare for cyclonic weather and organise an emergency kit
including first aid kit, torch, portable radio, spare batteries, food and water.
Details of Tropical Cyclone Heidi at 7:00 am WST:
.Centre located near...... 20.6 degrees South 118.6 degrees East
.Location accuracy........ within 20 kilometres
.Recent movement.......... towards the south southwest at 11 kilometres per hour
.Wind gusts near centre... 130 kilometres per hour
.Severity category........ 2
.Central pressure......... 978 hectoPascals
The next advice will be issued by 8:00 am WST Thursday 12 January.
Issued at 7:06 am WST on Thursday 12 January 2012
A Cyclone WARNING is now current for coastal areas from Pardoo to Dampier
including Port Hedland, Roebourne, Karratha and Dampier, and extends to
adjacent inland parts.
The Cyclone WARNING from Wallal to Pardoo has been cancelled.
At 7:00 am WST Tropical Cyclone Heidi, Category 2 was estimated to be
35 kilometres south of Port Hedland and
180 kilometres east of Karratha and
moving south southwest at 11 kilometres per hour.
Tropical Cyclone Heidi crossed the Pilbara coast just to the east of Port
Hedland at around 4:30 am. Gales with gusts to 110 kilometres per hour are
occuring in areas between Port Hedland and Whim Creek. Destructive winds with
gusts to 130 kilometres per hour are possible close to the cyclone centre for
the next few hours.
There is a small chance that gales with gusts to 90 kilometres per hour may
extend west to Dampier during Thursday morning if the cyclone takes a more
southwesterly track.
Heavy rainfall is occurring near the system and rainfall totals of 100-250mm
are likely across the central and eastern Pilbara. Refer to Flood Advices for
further details.
Tides along the Pilbara coast will be higher than normal although the threat of
dangerous storm tide has now passed.
RED ALERT: People in or near coastal and inland communities between Pardoo and
Whim Creek, including the communities of Pardoo, Port Hedland, South Hedland,
and Whim Creek, need to go to shelter immediately.
BLUE ALERT: People in or near coastal and inland communities between Whim Creek
and Dampier, including the communities of Roebourne, Pt Samson, Karratha, and
Dampier need to prepare for cyclonic weather and organise an emergency kit
including first aid kit, torch, portable radio, spare batteries, food and water.
Details of Tropical Cyclone Heidi at 7:00 am WST:
.Centre located near...... 20.6 degrees South 118.6 degrees East
.Location accuracy........ within 20 kilometres
.Recent movement.......... towards the south southwest at 11 kilometres per hour
.Wind gusts near centre... 130 kilometres per hour
.Severity category........ 2
.Central pressure......... 978 hectoPascals
The next advice will be issued by 8:00 am WST Thursday 12 January.
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AXAU01 APRF 120032
IDW27600
TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - WESTERN REGION
Issued by PERTH TROPICAL CYCLONE WARNING CENTRE
at: 0032 UTC 12/01/2012
Name: Tropical Cyclone Heidi
Identifier: 07U
Data At: 0000 UTC
Latitude: 20.7S
Longitude: 118.6E
Location Accuracy: within 10 nm [20 km]
Movement Towards: south southwest [193 deg]
Speed of Movement: 6 knots [11 km/h]
Maximum 10-Minute Wind: 50 knots [95 km/h]
Maximum 3-Second Wind Gust: 70 knots [130 km/h]
Central Pressure: 982 hPa
Radius of 34-knot winds NE quadrant: 40 nm [75 km]
Radius of 34-knot winds SE quadrant: 25 nm [45 km]
Radius of 34-knot winds SW quadrant: 25 nm [45 km]
Radius of 34-knot winds NW quadrant: 40 nm [75 km]
Radius of 48-knot winds NE quadrant: 10 nm [20 km]
Radius of 48-knot winds SE quadrant: 10 nm [20 km]
Radius of 48-knot winds SW quadrant: 10 nm [20 km]
Radius of 48-knot winds NW quadrant: 10 nm [20 km]
Radius of 64-knot winds:
Radius of Maximum Winds:
Dvorak Intensity Code: N/A over land
Pressure of outermost isobar: 1002 hPa
Radius of outermost closed isobar: 90 nm [165 km]
Storm Depth: Deep
FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
[UTC] : degrees : nm [km]: knots[km/h]: hPa
+12: 12/1200: 22.0S 117.9E: 040 [075]: 025 [045]: 996
+24: 13/0000: 23.7S 117.0E: 070 [130]: 025 [045]: 1000
+36: 13/1200: 25.6S 116.9E: 100 [190]: 025 [045]: 1000
+48: 14/0000: 27.4S 117.2E: 135 [250]: 025 [045]: 1000
+60: 14/1200: 27.9S 118.5E: 180 [340]: 025 [045]: 1000
+72: 15/0000: 28.4S 119.9E: 230 [425]: 025 [045]: 1000
REMARKS:
Tropical Cyclone Heidi crossed the Pilbara coast just to the east of Port
Hedland at around 4:30am WST on Thursday morning as a high end category 2 system
with maximum winds of around 60 knots confirmed by surface observations.
The system is now weakening over land although there remains a well defined
radar signature to suggest that the cyclone may still be at category 2
intensity. However the system is likely to be below Tropical Cyclone strength
during Thursday afternoon as the effects of landfall take effect.
Heidi should continue its south southwest track further inland with heavy
rainfall expected south and east of the track.
Copyright Commonwealth of Australia
==
The next bulletin for this system will be issued by: 12/0700 UTC by Perth TCWC.
IDW27600
TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - WESTERN REGION
Issued by PERTH TROPICAL CYCLONE WARNING CENTRE
at: 0032 UTC 12/01/2012
Name: Tropical Cyclone Heidi
Identifier: 07U
Data At: 0000 UTC
Latitude: 20.7S
Longitude: 118.6E
Location Accuracy: within 10 nm [20 km]
Movement Towards: south southwest [193 deg]
Speed of Movement: 6 knots [11 km/h]
Maximum 10-Minute Wind: 50 knots [95 km/h]
Maximum 3-Second Wind Gust: 70 knots [130 km/h]
Central Pressure: 982 hPa
Radius of 34-knot winds NE quadrant: 40 nm [75 km]
Radius of 34-knot winds SE quadrant: 25 nm [45 km]
Radius of 34-knot winds SW quadrant: 25 nm [45 km]
Radius of 34-knot winds NW quadrant: 40 nm [75 km]
Radius of 48-knot winds NE quadrant: 10 nm [20 km]
Radius of 48-knot winds SE quadrant: 10 nm [20 km]
Radius of 48-knot winds SW quadrant: 10 nm [20 km]
Radius of 48-knot winds NW quadrant: 10 nm [20 km]
Radius of 64-knot winds:
Radius of Maximum Winds:
Dvorak Intensity Code: N/A over land
Pressure of outermost isobar: 1002 hPa
Radius of outermost closed isobar: 90 nm [165 km]
Storm Depth: Deep
FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
[UTC] : degrees : nm [km]: knots[km/h]: hPa
+12: 12/1200: 22.0S 117.9E: 040 [075]: 025 [045]: 996
+24: 13/0000: 23.7S 117.0E: 070 [130]: 025 [045]: 1000
+36: 13/1200: 25.6S 116.9E: 100 [190]: 025 [045]: 1000
+48: 14/0000: 27.4S 117.2E: 135 [250]: 025 [045]: 1000
+60: 14/1200: 27.9S 118.5E: 180 [340]: 025 [045]: 1000
+72: 15/0000: 28.4S 119.9E: 230 [425]: 025 [045]: 1000
REMARKS:
Tropical Cyclone Heidi crossed the Pilbara coast just to the east of Port
Hedland at around 4:30am WST on Thursday morning as a high end category 2 system
with maximum winds of around 60 knots confirmed by surface observations.
The system is now weakening over land although there remains a well defined
radar signature to suggest that the cyclone may still be at category 2
intensity. However the system is likely to be below Tropical Cyclone strength
during Thursday afternoon as the effects of landfall take effect.
Heidi should continue its south southwest track further inland with heavy
rainfall expected south and east of the track.
Copyright Commonwealth of Australia
==
The next bulletin for this system will be issued by: 12/0700 UTC by Perth TCWC.
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Grifforzer
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- Posts: 418
- Joined: Thu Feb 26, 2009 11:27 pm
IDW24100
Australian Government Bureau of Meteorology
Western Australia Tropical Cyclone Warning Centre
Media: The Standard Emergency Warning Signal should NOT be used with this warning.
TOP PRIORITY FOR IMMEDIATE BROADCAST
TROPICAL CYCLONE ADVICE NUMBER 30
Issued at 2:44 pm WST on Thursday 12 January 2012
A Cyclone WARNING is now current for inland areas of the Pilbara south of Whim Creek and Port Hedland extending towards but not including Tom Price.
At 2:00 pm WST Tropical Cyclone Heidi, Category 1 was estimated to be 125 kilometres south of Port Hedland and moving south southwest at 13 kilometres per hour.
Tropical Cyclone Heidi is moving across the Pilbara with gusts to 100 kilometres per hour possible close to the cyclone centre over areas inland from Port Hedland and Whim Creek extending towards Tom Price.
The system is weakening as it moves further inland and is expected to be below Tropical Cyclone intensity this evening.
Heavy rainfall is occurring near the system and rainfall totals of 100-250mm are likely to the south and east of the cyclone path. Refer to Flood Advices for further details.
ALL CLEAR: People in or near coastal and inland communities between Pardoo and Whim Creek including the communities of Pardoo, Port Hedland, South Hedland, and Whim Creek, are advised that wind and storm surge dangers have passed but you need to take extreme caution to avoid the dangers caused by damage.
Details of Tropical Cyclone Heidi at 2:00 pm WST:
.Centre located near...... 21.4 degrees South 118.4 degrees East
.Location accuracy........ within 20 kilometres
.Recent movement.......... towards the south southwest at 13 kilometres per hour
.Wind gusts near centre... 100 kilometres per hour
.Severity category........ 1
.Central pressure......... 990 hectoPascals
The next advice will be issued by 6:00 pm WST Thursday 12 January.
Australian Government Bureau of Meteorology
Western Australia Tropical Cyclone Warning Centre
Media: The Standard Emergency Warning Signal should NOT be used with this warning.
TOP PRIORITY FOR IMMEDIATE BROADCAST
TROPICAL CYCLONE ADVICE NUMBER 30
Issued at 2:44 pm WST on Thursday 12 January 2012
A Cyclone WARNING is now current for inland areas of the Pilbara south of Whim Creek and Port Hedland extending towards but not including Tom Price.
At 2:00 pm WST Tropical Cyclone Heidi, Category 1 was estimated to be 125 kilometres south of Port Hedland and moving south southwest at 13 kilometres per hour.
Tropical Cyclone Heidi is moving across the Pilbara with gusts to 100 kilometres per hour possible close to the cyclone centre over areas inland from Port Hedland and Whim Creek extending towards Tom Price.
The system is weakening as it moves further inland and is expected to be below Tropical Cyclone intensity this evening.
Heavy rainfall is occurring near the system and rainfall totals of 100-250mm are likely to the south and east of the cyclone path. Refer to Flood Advices for further details.
ALL CLEAR: People in or near coastal and inland communities between Pardoo and Whim Creek including the communities of Pardoo, Port Hedland, South Hedland, and Whim Creek, are advised that wind and storm surge dangers have passed but you need to take extreme caution to avoid the dangers caused by damage.
Details of Tropical Cyclone Heidi at 2:00 pm WST:
.Centre located near...... 21.4 degrees South 118.4 degrees East
.Location accuracy........ within 20 kilometres
.Recent movement.......... towards the south southwest at 13 kilometres per hour
.Wind gusts near centre... 100 kilometres per hour
.Severity category........ 1
.Central pressure......... 990 hectoPascals
The next advice will be issued by 6:00 pm WST Thursday 12 January.
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HurricaneBill
- Category 5
- Posts: 3420
- Joined: Sun Apr 11, 2004 5:51 pm
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Re: SIO: HEIDI (07U/06S) - Tropical Cyclone
At FMG work camp 25 in Port Hedland:
[youtube]http://www.youtube.com/watch?v=VB_ek5ueEZ0[/youtube]
[youtube]http://www.youtube.com/watch?v=VB_ek5ueEZ0[/youtube]
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Still a TC as of 1200 UTC but now well inland and tech bulletins have stopped.
AXAU01 APRF 121247
IDW27600
TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - WESTERN REGION
Issued by PERTH TROPICAL CYCLONE WARNING CENTRE
at: 1246 UTC 12/01/2012
Name: Tropical Cyclone Heidi
Identifier: 07U
Data At: 1200 UTC
Latitude: 22.1S
Longitude: 118.3E
Location Accuracy: within 15 nm [30 km]
Movement Towards: south [188 deg]
Speed of Movement: 7 knots [13 km/h]
Maximum 10-Minute Wind: 35 knots [65 km/h]
Maximum 3-Second Wind Gust: 50 knots [95 km/h]
Central Pressure: 991 hPa
Radius of 34-knot winds NE quadrant: 20 nm [35 km]
Radius of 34-knot winds SE quadrant: 30 nm [55 km]
Radius of 34-knot winds SW quadrant: 15 nm [30 km]
Radius of 34-knot winds NW quadrant: 15 nm [30 km]
Radius of 48-knot winds NE quadrant:
Radius of 48-knot winds SE quadrant:
Radius of 48-knot winds SW quadrant:
Radius of 48-knot winds NW quadrant:
Radius of 64-knot winds:
Radius of Maximum Winds:
Dvorak Intensity Code: N/A - over land
Pressure of outermost isobar: 1000 hPa
Radius of outermost closed isobar: 60 nm [110 km]
Storm Depth: Deep
FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
[UTC] : degrees : nm [km]: knots[km/h]: hPa
+12: 13/0000: 23.8S 117.6E: 040 [075]: 030 [055]: 998
+24: 13/1200: 25.6S 117.3E: 070 [130]: 025 [045]: 1000
+36: 14/0000: 27.2S 117.8E: 100 [185]: 025 [045]: 1000
+48: 14/1200: 28.0S 118.9E: 135 [250]: 025 [045]: 1000
+60: 15/0000: 28.4S 120.6E: 185 [345]: 025 [045]: 1000
+72: 15/1200: 29.0S 123.0E: 230 [425]: 025 [045]: 1000
REMARKS:
Tropical Cyclone Heidi continues to weaken over land. The Port Hedland radar has
showed significant weakening over the past couple of hours, and the centre is
becoming difficult to track.
The circulation should continue its south southwest track further inland with
heavy rainfall expected south and east of the track for the next few days.
Squally conditions are likely to continue near the centre overnight as it tracks
into the northeast Gascoyne.
Copyright Commonwealth of Australia
==
There will be no further bulletins for this system.
AXAU01 APRF 121247
IDW27600
TROPICAL CYCLONE TECHNICAL BULLETIN: AUSTRALIA - WESTERN REGION
Issued by PERTH TROPICAL CYCLONE WARNING CENTRE
at: 1246 UTC 12/01/2012
Name: Tropical Cyclone Heidi
Identifier: 07U
Data At: 1200 UTC
Latitude: 22.1S
Longitude: 118.3E
Location Accuracy: within 15 nm [30 km]
Movement Towards: south [188 deg]
Speed of Movement: 7 knots [13 km/h]
Maximum 10-Minute Wind: 35 knots [65 km/h]
Maximum 3-Second Wind Gust: 50 knots [95 km/h]
Central Pressure: 991 hPa
Radius of 34-knot winds NE quadrant: 20 nm [35 km]
Radius of 34-knot winds SE quadrant: 30 nm [55 km]
Radius of 34-knot winds SW quadrant: 15 nm [30 km]
Radius of 34-knot winds NW quadrant: 15 nm [30 km]
Radius of 48-knot winds NE quadrant:
Radius of 48-knot winds SE quadrant:
Radius of 48-knot winds SW quadrant:
Radius of 48-knot winds NW quadrant:
Radius of 64-knot winds:
Radius of Maximum Winds:
Dvorak Intensity Code: N/A - over land
Pressure of outermost isobar: 1000 hPa
Radius of outermost closed isobar: 60 nm [110 km]
Storm Depth: Deep
FORECAST DATA
Date/Time : Location : Loc. Accuracy: Max Wind : Central Pressure
[UTC] : degrees : nm [km]: knots[km/h]: hPa
+12: 13/0000: 23.8S 117.6E: 040 [075]: 030 [055]: 998
+24: 13/1200: 25.6S 117.3E: 070 [130]: 025 [045]: 1000
+36: 14/0000: 27.2S 117.8E: 100 [185]: 025 [045]: 1000
+48: 14/1200: 28.0S 118.9E: 135 [250]: 025 [045]: 1000
+60: 15/0000: 28.4S 120.6E: 185 [345]: 025 [045]: 1000
+72: 15/1200: 29.0S 123.0E: 230 [425]: 025 [045]: 1000
REMARKS:
Tropical Cyclone Heidi continues to weaken over land. The Port Hedland radar has
showed significant weakening over the past couple of hours, and the centre is
becoming difficult to track.
The circulation should continue its south southwest track further inland with
heavy rainfall expected south and east of the track for the next few days.
Squally conditions are likely to continue near the centre overnight as it tracks
into the northeast Gascoyne.
Copyright Commonwealth of Australia
==
There will be no further bulletins for this system.
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