TROPICAL CYCLONE 07P (HETA) WARNING #022
06/06Z 19.7S 169.8W 145G175MPH
06/18Z 22.5S 167.4W 115G145MPH
07/06Z 25.1S 164.9W 090G115MPH BECOMING EXTRATROPICAL
07/18Z 27.6S 162.4W 075G090MPH BECOMING EXTRATROPICAL
08/06Z 30.3S 159.6W 060G075MPH EXTRATROPICAL
TROPICAL CYCLONE (TC) 07P (HETA), LOCATED APPROXIMATELY 360 NM
SOUTH-SOUTHEAST OF PAGO PAGO, AMERICAN SAMOA, HAS TRACKED SOUTHEASTWARD
AT 17 KNOTS OVER THE PAST SIX HOURS. THE WARNING POSITION IS BASED
ON 060530Z4 INFRARED SATELLITE IMAGERY. THE WARNING INTENSITY
IS BASED ON SATELLITE CURRENT INTENSITY ESTIMATES OF 127 KNOTS. A RECENT
MICROWAVE PASS DEPICTS A 10 NM EYE FEATURE. THE SYSTEM HAS ACCELERATED
TOWARDS THE SOUTHEAST UNDER THE INFLUENCE OF A MID-LEVEL STEERING RIDGE
TO THE EAST. TC 07P SHOULD CONTINUE TO TRACK SOUTHEASTERLY THROUGH THE
FORECAST PERIOD AS IT BEGINS TO INTERACT WITH MID-LATITUDE NORTHWESTERLIES
ASSOCIATED WITH A TROUGH TO THE WEST. THE SYSTEM SHOULD CONTINUE TO WEAKEN
AS IT ENCOUNTERS INCREASING VERTICAL WIND SHEAR ON ITS WAY TO BECOMING AN
EXTRATROPICAL SYSTEM. THE AVAILABLE DYNAMIC AIDS CONSISTING OF NOGAPS, UKMET
(EGRR), GFDN, AND NCEP GFS ARE IN GOOD AGREEMENT WITH THIS SCENARIO. THIS
FORECAST IS BASED ON A BLEND OF PERSISTENCE AND THE AVAILABLE DYNAMIC AIDS.
MAXIMUM SIGNIFICANT WAVE HEIGHT AT 060600Z2 IS 40 FEET. NEXT WARNINGS AT
062100Z9 AND 070900Z6.//
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Note: Winds are in degrees @ mph; vis is in statute miles; Sky Condition is reported in hundreds of feet (005=500') Temp and Dewpt are in °F, Pressure is in inches of mercury. /// is encoded for missing data.
Location Time Winds Vis Weather Sky Condition Temp Dewpt Pressure
Pago Pago 0857Z 300@17G35 10.0 None BKN017 BKN045 OVC110 84°F 81°F 29.53"
Apia Wharf 0700Z 250@09 /// /// /// 82°F /// 29.52"
Fuaamotu 0600Z 160@20 10.0 Lgt Rain Shwrs FEW005 BKN110 77°F 73°F 29.47"