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| #899348 (Received by flhurricane at: 4:55 AM 24.Aug.2017) TCMAT4 TROPICAL STORM HARVEY FORECAST/ADVISORY NUMBER 15 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092017 0900 UTC THU AUG 24 2017 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... A HURRICANE WARNING HAS BEEN ISSUED FOR THE TEXAS COAST FROM PORT MANSFIELD TO MATAGORDA. A TROPICAL STORM WARNING HAS BEEN ISSUED FROM NORTH OF MATAGORDA TO HIGH ISLAND TEXAS A TROPICAL STORM WARNING AND A HURRICANE WATCH HAS BEEN ISSUED FROM SOUTH OF PORT MANSFIELD TO THE MOUTH OF THE RIO GRANDE. NONE. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A STORM SURGE WATCH IS IN EFFECT FOR... * PORT MANSFIELD TO HIGH ISLAND A HURRICANE WARNING IS IN EFFECT FOR... * NORTH OF PORT MANSFIELD TO MATAGORDA A TROPICAL STORM WARNING IS IN EFFECT FOR... * NORTH OF MATAGORDA TO HIGH ISLAND * SOUTH OF PORT MANSFIELD TO THE MOUTH OF THE RIO GRANDE A HURRICANE WATCH IS IN EFFECT FOR... * SOUTH OF PORT MANSFIELD TO THE MOUTH OF THE RIO GRANDE A TROPICAL STORM WATCH IS EFFECT FOR... * SOUTH OF THE MOUTH OF THE RIO GRANDE... TEXAS TO BOCA DE CATAN MEXICO. A STORM SURGE WATCH MEANS THERE IS A POSSIBILITY OF LIFE- THREATENING INUNDATION... FROM RISING WATER MOVING INLAND FROM THE COASTLINE... IN THE INDICATED LOCATIONS DURING THE NEXT 48 HOURS. FOR A DEPICTION OF AREAS AT RISK... PLEASE SEE THE NATIONAL WEATHER SERVICE STORM SURGE WATCH/WARNING GRAPHIC... AVAILABLE AT HURRICANES.GOV. A HURRICANE WATCH MEANS THAT HURRICANE CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA. A WATCH IS TYPICALLY ISSUED 48 HOURS BEFORE THE ANTICIPATED FIRST OCCURRENCE OF TROPICAL-STORM-FORCE WINDS... CONDITIONS THAT MAKE OUTSIDE PREPARATIONS DIFFICULT OR DANGEROUS. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA... GENERALLY WITHIN 48 HOURS. WARNINGS WILL LIKELY BE REQUIRED FOR PORTIONS OF THE WATCH AREA THIS MORNING. IN ADDITION... INTERESTS IN SOUTHWESTERN LOUISIANA SHOULD CONTINUE TO MONITOR THE PROGRESS OF THIS SYSTEM. TROPICAL STORM CENTER LOCATED NEAR 23.2N 92.8W AT 24/0900Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTH OR 360 DEGREES AT 9 KT ESTIMATED MINIMUM CENTRAL PRESSURE 995 MB MAX SUSTAINED WINDS 40 KT WITH GUSTS TO 50 KT. 34 KT.......100NE 0SE 0SW 50NW. 12 FT SEAS.. 0NE 0SE 0SW 60NW. 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 23.2N 92.8W AT 24/0900Z AT 24/0600Z CENTER WAS LOCATED NEAR 22.6N 92.6W FORECAST VALID 24/1800Z 24.0N 93.6W MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 30NE 0SE 0SW 0NW. 34 KT...120NE 30SE 20SW 80NW. FORECAST VALID 25/0600Z 25.1N 94.8W MAX WIND 60 KT...GUSTS 75 KT. 50 KT... 30NE 20SE 0SW 30NW. 34 KT...130NE 50SE 30SW 90NW. FORECAST VALID 25/1800Z 26.3N 95.8W MAX WIND 70 KT...GUSTS 85 KT. 64 KT... 20NE 20SE 0SW 20NW. 50 KT... 30NE 30SE 20SW 30NW. 34 KT...140NE 70SE 50SW 90NW. FORECAST VALID 26/0600Z 27.5N 97.0W MAX WIND 75 KT...GUSTS 90 KT. 50 KT... 30NE 30SE 20SW 30NW. 34 KT...140NE 80SE 40SW 70NW. FORECAST VALID 27/0600Z 28.5N 97.8W...INLAND MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 60NE 90SE 30SW 30NW. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 200 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 28/0600Z 28.5N 97.8W...INLAND MAX WIND 35 KT...GUSTS 45 KT. OUTLOOK VALID 29/0600Z 27.6N 97.0W...INLAND MAX WIND 35 KT...GUSTS 45 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 23.2N 92.8W NEXT ADVISORY AT 24/1500Z $$ FORECASTER AVILA |
