Tropical Storm Helene

Forecast Advisory 12

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809
WTNT22 KNHC 181432
TCMAT2

TROPICAL DEPRESSION HELENE FORECAST/ADVISORY NUMBER 12
NWS NATIONAL HURRICANE CENTER MIAMI FL AL072012
1500 UTC SAT AUG 18 2012

CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...

THE GOVERNMENT OF MEXICO HAS DISCONTINUED THE TROPICAL STORM WARNING
FROM BARRA DE NAUTLA TO LA CRUZ.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

THERE ARE NO COASTAL WATCHES AND WARNINGS IN EFFECT.

TROPICAL DEPRESSION CENTER LOCATED NEAR 22.0N 98.0W AT 18/1500Z
POSITION ACCURATE WITHIN 20 NM

PRESENT MOVEMENT TOWARD THE NORTHWEST OR 305 DEGREES AT 8 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 1008 MB
MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT.
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 22.0N 98.0W AT 18/1500Z
AT 18/1200Z CENTER WAS LOCATED NEAR 22.2N 97.8W

FORECAST VALID 19/0000Z 22.6N 98.7W...INLAND
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 19/1200Z 23.0N 98.8W...POST-TROP/REMNT LOW
MAX WIND 25 KT...GUSTS 35 KT.

FORECAST VALID 20/0000Z 23.5N 98.5W...POST-TROP/REMNT LOW
MAX WIND 20 KT...GUSTS 30 KT.

FORECAST VALID 20/1200Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 22.0N 98.0W

NEXT ADVISORY AT 18/2100Z

$$
FORECASTER BERG





816
WTNT23 KNHC 181432
TCMAT3

HURRICANE GORDON FORECAST/ADVISORY NUMBER 12
NWS NATIONAL HURRICANE CENTER MIAMI FL AL082012
1500 UTC SAT AUG 18 2012

CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...

THE GOVERNMENT OF PORTUGAL HAS CHANGED THE TROPICAL STORM WARNING
FOR THE CENTRAL AND EASTERN AZORES TO A HURRICANE WARNING.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT...

A HURRICANE WARNING IS IN EFFECT FOR...
* THE CENTRAL AND EASTERN AZORES

A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA. A WARNING IS TYPICALLY ISSUED 36
HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL STORM
FORCE WINDS...CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT
OR DANGEROUS. PREPARATIONS TO PROTECT LIFE AND PROPERTY SHOULD BE
RUSHED TO COMPLETION.

HURRICANE CENTER LOCATED NEAR 34.1N 38.6W AT 18/1500Z
POSITION ACCURATE WITHIN 20 NM

PRESENT MOVEMENT TOWARD THE EAST OR 90 DEGREES AT 16 KT

ESTIMATED MINIMUM CENTRAL PRESSURE 983 MB
EYE DIAMETER 20 NM
MAX SUSTAINED WINDS 70 KT WITH GUSTS TO 85 KT.
64 KT....... 0NE 30SE 30SW 0NW.
50 KT....... 30NE 60SE 60SW 0NW.
34 KT....... 80NE 110SE 110SW 80NW.
12 FT SEAS.. 90NE 180SE 240SW 120NW.
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 34.1N 38.6W AT 18/1500Z
AT 18/1200Z CENTER WAS LOCATED NEAR 34.0N 39.6W

FORECAST VALID 19/0000Z 34.3N 35.5W
MAX WIND 75 KT...GUSTS 90 KT.
64 KT... 20NE 40SE 40SW 0NW.
50 KT... 40NE 70SE 70SW 30NW.
34 KT... 90NE 120SE 120SW 90NW.

FORECAST VALID 19/1200Z 35.0N 31.4W
MAX WIND 70 KT...GUSTS 85 KT.
64 KT... 20NE 40SE 40SW 0NW.
50 KT... 50NE 70SE 70SW 30NW.
34 KT...100NE 130SE 130SW 90NW.

FORECAST VALID 20/0000Z 36.1N 27.8W
MAX WIND 65 KT...GUSTS 80 KT.
64 KT... 0NE 30SE 30SW 0NW.
50 KT... 50NE 60SE 60SW 30NW.
34 KT...100NE 130SE 130SW 90NW.

FORECAST VALID 20/1200Z 37.4N 24.6W
MAX WIND 55 KT...GUSTS 65 KT.
50 KT... 30NE 40SE 40SW 0NW.
34 KT... 90NE 120SE 110SW 80NW.

FORECAST VALID 21/1200Z 38.5N 20.0W...POST-TROP/EXTRATROP
MAX WIND 35 KT...GUSTS 45 KT.
34 KT... 20NE 50SE 50SW 0NW.

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 22/1200Z 38.5N 16.0W...POST-TROP/EXTRATROP
MAX WIND 30 KT...GUSTS 40 KT.

OUTLOOK VALID 23/1200Z...DISSIPATED

REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 34.1N 38.6W

NEXT ADVISORY AT 18/2100Z

$$
FORECASTER BRENNAN