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Tropical Storm Helene Forecast Advisory Number 9
2018-09-09 16:41:13| National Hurricane Center (Atlantic)
Issued at 1500 UTC SUN SEP 09 2018 960 WTNT23 KNHC 091441 TCMAT3 TROPICAL STORM HELENE FORECAST/ADVISORY NUMBER 9 NWS NATIONAL HURRICANE CENTER MIAMI FL AL082018 1500 UTC SUN SEP 09 2018 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A HURRICANE WATCH IS IN EFFECT FOR... * THE CABO VERDE ISLANDS OF SANTIAGO... FOGO... AND BRAVA A TROPICAL STORM WARNING IS IN EFFECT FOR... * THE CABO VERDE ISLANDS OF SANTIAGO... FOGO... AND BRAVA A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA. A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA. TROPICAL STORM CENTER LOCATED NEAR 13.2N 25.0W AT 09/1500Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT 11 KT ESTIMATED MINIMUM CENTRAL PRESSURE 997 MB MAX SUSTAINED WINDS 55 KT WITH GUSTS TO 65 KT. 50 KT....... 30NE 30SE 0SW 30NW. 34 KT....... 70NE 60SE 30SW 60NW. 12 FT SEAS..120NE 240SE 180SW 90NW. 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 13.2N 25.0W AT 09/1500Z AT 09/1200Z CENTER WAS LOCATED NEAR 13.2N 24.4W FORECAST VALID 10/0000Z 13.7N 27.1W MAX WIND 65 KT...GUSTS 80 KT. 64 KT... 20NE 0SE 0SW 0NW. 50 KT... 40NE 30SE 0SW 30NW. 34 KT... 70NE 60SE 30SW 60NW. FORECAST VALID 10/1200Z 14.3N 30.0W MAX WIND 75 KT...GUSTS 90 KT. 64 KT... 20NE 10SE 0SW 10NW. 50 KT... 40NE 40SE 20SW 30NW. 34 KT... 80NE 80SE 50SW 80NW. FORECAST VALID 11/0000Z 14.9N 32.8W MAX WIND 85 KT...GUSTS 105 KT. 64 KT... 20NE 10SE 0SW 10NW. 50 KT... 40NE 40SE 20SW 30NW. 34 KT...100NE 80SE 50SW 100NW. FORECAST VALID 11/1200Z 15.7N 35.2W MAX WIND 90 KT...GUSTS 110 KT. 64 KT... 30NE 20SE 10SW 20NW. 50 KT... 60NE 40SE 30SW 40NW. 34 KT...120NE 90SE 60SW 120NW. FORECAST VALID 12/1200Z 17.8N 38.6W MAX WIND 80 KT...GUSTS 100 KT. 50 KT... 60NE 40SE 30SW 50NW. 34 KT...120NE 90SE 60SW 120NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 13/1200Z 21.0N 41.0W MAX WIND 65 KT...GUSTS 80 KT. OUTLOOK VALID 14/1200Z 26.0N 43.0W MAX WIND 55 KT...GUSTS 65 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 13.2N 25.0W NEXT ADVISORY AT 09/2100Z $$ FORECASTER PASCH
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