Gustywind wrote:000
AXNT20 KNHC 131751
TWDAT
TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
205 PM EDT THU AUG 13 2009
TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS
OF SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST
FROM THE EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED
ON SATELLITE IMAGERY...METEOROLOGICAL ANALYSIS...WEATHER
OBSERVATIONS...AND RADAR.
BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH
1715 UTC.
...SPECIAL FEATURES...
TROPICAL DEPRESSION TWO IS CENTERED NEAR 14.0N 37.6W OR ABOUT
885 MILES...1425 KM...WEST OF THE SOUTHERNMOST CAPE VERDE
ISLANDS AT 13/1500 UTC MOVING W AT 8 KT. ESTIMATED MINIMUM
CENTRAL PRESSURE IS 1008 MB. MAXIMUM SUSTAINED WIND SPEED IS 25
KT WITH GUSTS TO 35 KT. WWD MOTION IS EXPECTED TO CONTINUE OVER
THE NEXT FEW DAYS WITH A GRADUAL BEND TO THE WNW AND AN INCREASE
IN FORWARD SPEED. LITTLE CHANGE IN INTENSITY HAS OCCURRED OVER
THE PAST 24 HOURS. LITTLE DEEP CONVECTION IS CURRENTLY
ASSOCIATED WITH THE SYSTEM. SCATTERED MODERATE CONVECTION IS
FROM 14N-15N BETWEEN 38W-39W. SEE LATEST NHC FORECAST ADVISORY
UNDER AWIPS/WMO HEADERS MIATCMAT2/WTNT22 FOR MORE DETAILS.
A STRONG TROPICAL WAVE IS ALONG 22W S OF 22N NEAR THE CAPE VERDE
ISLANDS MOVING W NEAR 10 KT. RECENT MICROWAVE IMAGERY SHOWED A
WELL DEFINED LOW CENTER ON THE WAVE AXIS AT 12N22W. A LARGE AREA
OF MOISTURE IS ALSO NOTED ON SSMI TOTAL PRECIPITABLE WATER.
PATCHES OF WIDELY SCATTERED MODERATE CONVECTION ARE FROM 7N-15N
BETWEEN 17W-30W. THERE IS A 30-50 PERCENT CHANCE OF THIS SYSTEM
TO DEVELOP INTO A TROPICAL CYCLONE IN THE NEXT 48 HRS.
...TROPICAL WAVES...
A TROPICAL WAVE IS ALONG 68W S OF 21N MOVING W NEAR 20-25 KT.
SATELLITE IMAGERY INDICATES AN INVERTED-V STRUCTURE IN THE
LOW-LEVEL CLOUD PATTERN. THE WAVE ALSO COINCIDES WITH A DEEP
MOISTURE MAXIMUM OBSERVED IN TOTAL PRECIPITABLE WATER IMAGERY.
SCATTERED MODERATE/ISOLATED STRONG CONVECTION IS N OF HISPANIOLA
FROM 20N-23N BETWEEN 68W-72W. THIS ACTIVITY IS ENHANCED BY UPPER
LEVEL DIFFLUENCE. SCATTERED SHOWERS ARE ALSO E OF THE WAVE AXIS
FROM 11N-15N BETWEEN 63W-66W.
A TROPICAL WAVE IS ALONG 80W S OF 21N MOVING W NEAR 25 KT.
CURRENT POSITION IS BASED ON CONTINUITY. STRONG SUBSIDENCE ALOFT
IS INHIBITING ANY DEEP CONVECTION OVER THE CENTRAL CARIBBEAN
SEA. A SIGNIFICANT AREA OF SCATTERED MODERATE TO STRONG
CONVECTION IS FURTHER S HOWEVER OVER THE E PACIFIC.
...ITCZ...
THE ITCZ AXIS IS CENTERED ALONG 14N17W 11N26W 14N36W 9N46W
12N62W. BESIDES THE CONVECTION THAT WAS MENTIONED IN THE SPECIAL
FEATURES AND TROPICAL WAVE SECTIONS...SCATTERED SHOWERS ARE FROM
7N-11N BETWEEN 30W-55W.
...DISCUSSION...
GULF OF MEXICO...
A SURFACE TROUGH IS OVER THE NE GULF FROM N FLORIDA AT 31N83W TO
THE NORTH CENTRAL GULF AT 27N90W. WIDELY SCATTERED MODERATE
CONVECTION IS FROM 26N-29N BETWEEN 82W-87W. 15 MINUTE LIGHTNING
DATA SHOWS FREQUENT LIGHTNING S OF THE FLORIDA PANHANDLE.
ISOLATED SHOWERS ARE ALSO OVER THE N GULF N OF 24N. OUTSIDE
AREAS OF CONVECTION...SURFACE WINDS ARE LIGHT TO VARIABLE ACROSS
THE GULF. IN THE UPPER LEVELS...AN UPPER LEVEL TROUGH IS OVER
THE NE GULF N OF 23N. AN EMBEDDED UPPER LEVEL LOW IS OVER THE SE
GULF CENTERED NEAR 24N84W. ANOTHER UPPER LEVEL LOW IS OVER S
MEXICO CENTERED AT 18N104W. SIGNIFICANT UPPER LEVEL MOISTURE
COVERS THE ENTIRE AREA EXCEPT FOR THE BAY OF CAMPECHE.
EXPECT...CONTINUED CONVECTION AND SHOWERS OVER THE NE GULF AND
FLORIDA OVER THE NEXT 24 HOURS.
CARIBBEAN SEA...
TWO TROPICAL WAVES ARE AFFECTING THE CARIBBEAN SEA AND CENTRAL
AMERICA. SEE ABOVE. MODERATE TO FRESH TRADEWINDS ARE OVER THE
AREA. IN ADDITION...A 1008 MB LOW IS OVER N COLOMBIA NEAR
10N76W. SCATTERED MODERATE CONVECTION IS ALONG THE COAST OF
NICARAGUA FROM 11N-13N BETWEEN 82W-85W. IN THE UPPER LEVELS...AN
UPPER LEVEL HIGH IS OVER GUATEMALA NEAR 17N90W. AN UPPER LEVEL
LOW IS OVER HAITI NEAR 20N73W. STRONG SUBSIDENCE IS OVER THE
CENTRAL CARIBBEAN BETWEEN 70W-80W. EXPECT SHOWERS AND ISOLATED
THUNDERSTORMS OVER THE CARIBBEAN DUE TO THE TROPICAL WAVES OVER
THE NEXT 24 HOURS.
ATLANTIC OCEAN...
A 1024 MB HIGH IS OVER THE W ATLANTIC NEAR 28N60W. A RIDGE AXIS
EXTENDS W TO 27N75W. A 1027 MB HIGH IS CENTERED NEAR THE AZORES
AT 39N27W. A RIDGE AXIS EXTENDS SW TO THE CENTRAL ATLANTIC NEAR
32N45W. IN THE UPPER LEVELS...AN UPPER LEVEL RIDGE IS OVER THE W
ATLANTIC N OF 20N AND W OF 70W. AN UPPER LEVEL LOW IS OVER THE W
ATLANTIC NEAR 24N63W. ANOTHER UPPER LEVEL LOW IS CENTERED OVER
THE CENTRAL ATLANTIC NEAR 27N45W. A LARGE UPPER LEVEL HIGH IS
CENTERED OVER THE TROPICAL ATLANTIC N OF THE CAPE VERDE ISLANDS
NEAR 21N22W. EXPECT THE SPECIAL FEATURES TO BE THE DOMINATE
FEATURES OVER THE NEXT 24 HOURS.
$$
FORMOSA
Hey that's "funny"

CHANCE...GREATER THAN 50 PERCENT...OF THIS SYSTEM BECOMING A
TROPICAL CYCLONE DURING THE NEXT 48 HOURS, while the TWD is mentionning THERE IS A 30-50 PERCENT CHANCE OF THIS SYSTEM TO DEVELOP INTO A TROPICAL CYCLONE IN THE NEXT 48 HRS.


Just a remark...
