000 WTNT23 KNHC 201433 TCMAT3 POTENTIAL TROPICAL CYCLONE THREE FORECAST/ADVISORY NUMBER 4 NWS NATIONAL HURRICANE CENTER MIAMI FL AL032017 1500 UTC TUE JUN 20 2017 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE TROPICAL STORM WARNING HAS BEEN EXTENDED WESTWARD TO HIGH ISLAND TEXAS. A TROPICAL STORM WATCH IS IN EFFECT FROM WEST OF HIGH ISLAND TO SAN LUIS PASS TEXAS. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... A TROPICAL STORM WARNING IS IN EFFECT FOR... * HIGH ISLAND TO THE MOUTH OF THE PEARL RIVER A TROPICAL STORM WATCH IS IN EFFECT FOR... * WEST OF HIGH ISLAND TO SAN LUIS PASS A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED SOMEWHERE WITHIN THE WARNING AREA...IN THIS CASE WITHIN THE NEXT 24 TO 36 HOURS. A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE POSSIBLE WITHIN THE WATCH AREA...GENERALLY WITHIN 48 HOURS. INTERESTS ELSEWHERE ALONG THE U.S. GULF COAST FROM THE CENTRAL TEXAS COAST TO THE WESTERN FLORIDA PANHANDLE SHOULD MONITOR THE PROGRESS OF THIS SYSTEM. POTENTIAL TROP CYCLONE CENTER LOCATED NEAR 25.9N 90.5W AT 20/1500Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 320 DEGREES AT 9 KT ESTIMATED MINIMUM CENTRAL PRESSURE 999 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT.......180NE 180SE 0SW 0NW. 12 FT SEAS..270NE 270SE 0SW 0NW. 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 25.9N 90.5W AT 20/1500Z AT 20/1200Z CENTER WAS LOCATED NEAR 25.5N 90.6W FORECAST VALID 21/0000Z 26.7N 91.6W...TROPICAL CYCLONE MAX WIND 40 KT...GUSTS 50 KT. 34 KT...180NE 180SE 0SW 30NW. FORECAST VALID 21/1200Z 27.4N 92.6W MAX WIND 40 KT...GUSTS 50 KT. 34 KT...150NE 120SE 0SW 60NW. FORECAST VALID 22/0000Z 28.6N 93.6W MAX WIND 40 KT...GUSTS 50 KT. 34 KT...150NE 100SE 40SW 60NW. FORECAST VALID 22/1200Z 30.1N 94.0W...INLAND MAX WIND 35 KT...GUSTS 45 KT. 34 KT...80NE 100SE 40SW 60NW. FORECAST VALID 23/1200Z 34.0N 92.5W...INLAND MAX WIND 25 KT...GUSTS 35 KT. 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 24/1200Z 37.5N 84.0W...POST-TROP/INLAND MAX WIND 20 KT...GUSTS 30 KT. OUTLOOK VALID 25/1200Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 25.9N 90.5W NEXT ADVISORY AT 20/2100Z $$ FORECASTER BRENNAN