Tropical Storm Alberto

Forecast Advisory 4

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220
WTNT21 KNHC 201449
TCMAT1

TROPICAL STORM ALBERTO FORECAST/ADVISORY NUMBER 4
NWS NATIONAL HURRICANE CENTER MIAMI FL AL012012
1500 UTC SUN MAY 20 2012

CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...

NONE.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A TROPICAL STORM WATCH IS IN EFFECT FOR...
* SAVANNAH RIVER TO SOUTH SANTEE RIVER SOUTH CAROLINA

A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE
POSSIBLE WITHIN THE WATCH AREA...IN THIS CASE WITHIN 24 HOURS.

COASTAL INTERESTS ELSEWHERE FROM GEORGIA THROUGH THE OUTER BANKS OF
NORTH CAROLINA SHOULD MONITOR THE PROGRESS OF ALBERTO.

TROPICAL STORM CENTER LOCATED NEAR 31.5N 79.7W AT 20/1500Z
POSITION ACCURATE WITHIN 15 NM

PRESENT MOVEMENT TOWARD THE WEST-SOUTHWEST OR 250 DEGREES AT 5 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1000 MB
MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT.
34 KT....... 40NE 0SE 0SW 60NW.
12 FT SEAS..110NE 40SE 60SW 50NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.

REPEAT...CENTER LOCATED NEAR 31.5N 79.7W AT 20/1500Z
AT 20/1200Z CENTER WAS LOCATED NEAR 31.7N 79.3W

FORECAST VALID 21/0000Z 31.2N 79.7W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 40NE 10SE 20SW 50NW.

FORECAST VALID 21/1200Z 31.4N 79.1W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 40NE 20SE 20SW 50NW.

FORECAST VALID 22/0000Z 32.3N 77.6W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 50NE 30SE 30SW 40NW.

FORECAST VALID 22/1200Z 34.2N 75.4W
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 50NE 40SE 30SW 30NW.

FORECAST VALID 23/1200Z 38.0N 70.5W...POST-TROPICAL
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 50NE 50SE 40SW 30NW.

EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 175 NM
ON DAY 4 AND 225 NM ON DAY 5...AND FOR INTENSITY NEAR 20 KT EACH DAY

OUTLOOK VALID 24/1200Z 39.5N 66.5W...POST-TROPICAL
MAX WIND 30 KT...GUSTS 40 KT.

OUTLOOK VALID 25/1200Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 31.5N 79.7W

NEXT ADVISORY AT 20/2100Z

$$
FORECASTER BERG/PASCH