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Summary for Tropical Storm Isaac (AT4/AL092018)
2018-09-13 22:41:52| National Hurricane Center (Atlantic)
...ALL TROPICAL STORM WATCHES AND WARNINGS FOR ISAAC HAVE ENDED... ...HEAVY RAIN THREAT REMAINS... As of 5:00 PM AST Thu Sep 13 the center of Isaac was located near 14.9, -63.2 with movement W at 16 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 40 mph.
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Tropical Storm Isaac Public Advisory Number 25
2018-09-13 22:41:52| National Hurricane Center (Atlantic)
Issued at 500 PM AST Thu Sep 13 2018 377 WTNT34 KNHC 132041 TCPAT4 BULLETIN Tropical Storm Isaac Advisory Number 25 NWS National Hurricane Center Miami FL AL092018 500 PM AST Thu Sep 13 2018 ...ALL TROPICAL STORM WATCHES AND WARNINGS FOR ISAAC HAVE ENDED... ...HEAVY RAIN THREAT REMAINS... SUMMARY OF 500 PM AST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...14.9N 63.2W ABOUT 220 MI...355 KM SSE OF ST. CROIX ABOUT 510 MI...815 KM ESE OF SANTO DOMINGO DOMINICAN REPUBLIC MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 16 MPH...26 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: All watches and warnings have been discontinued for Isaac. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: None. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 500 PM AST (2100 UTC), the center of Tropical Storm Isaac was located near latitude 14.9 North, longitude 63.2 West. Isaac is moving toward the west near 16 mph (26 km/h), and this general motion with a decrease in forward speed is expected for the next few days. Isaac should move farther away from Lesser Antilles today, and then move across the eastern and central Caribbean Sea through the weekend. Maximum sustained winds have decreased to near 40 mph (65 km/h) with higher gusts. Isaac is forecast to gradually weaken over the next few days, and could degenerate into a tropical wave during that time. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The estimated minimum central pressure is 1006 mb (29.71 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Tropical Storm Isaac is expected to produce total rainfall accumulations of 2 to 4 inches with isolated amounts up to 8 to 10 inches over Dominica. Rainfall amounts of 2 to 4 inches with isolated amounts up to 6 inches over elevated terrain are forecast across Martinique and Guadeloupe. Rainfall totals of 2 to 4 inches are forecast across southeastern Puerto Rico, while totals of 1 to 2 inches with maximum amounts of 3 inches are possible across the remainder of Puerto Rico and the U.S. Virgin Islands. This rainfall may cause dangerous flash flooding. SURF: Swells generated by Isaac are affecting portions of the Lesser Antilles. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 1100 PM AST. $$ Forecaster Blake
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Tropical Storm Isaac Forecast Advisory Number 25
2018-09-13 22:41:20| National Hurricane Center (Atlantic)
Issued at 2100 UTC THU SEP 13 2018 800 WTNT24 KNHC 132041 TCMAT4 TROPICAL STORM ISAAC FORECAST/ADVISORY NUMBER 25 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092018 2100 UTC THU SEP 13 2018 CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... ALL WATCHES AND WARNINGS HAVE BEEN DISCONTINUED FOR ISAAC. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... NONE. TROPICAL STORM CENTER LOCATED NEAR 14.9N 63.2W AT 13/2100Z POSITION ACCURATE WITHIN 15 NM PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT 14 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 90NE 0SE 0SW 60NW. 12 FT SEAS..270NE 60SE 15SW 210NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 14.9N 63.2W AT 13/2100Z AT 13/1800Z CENTER WAS LOCATED NEAR 14.9N 62.5W FORECAST VALID 14/0600Z 14.9N 65.4W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 60NE 0SE 0SW 50NW. FORECAST VALID 14/1800Z 14.9N 68.2W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 15/0600Z 14.9N 70.8W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 15/1800Z 15.0N 73.0W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 16/1800Z 16.2N 77.4W MAX WIND 30 KT...GUSTS 40 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 17/1800Z 17.5N 81.5W MAX WIND 30 KT...GUSTS 40 KT. OUTLOOK VALID 18/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 14.9N 63.2W NEXT ADVISORY AT 14/0300Z $$ FORECASTER BLAKE
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Tropical Storm Isaac Graphics
2018-09-13 19:47:12| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Thu, 13 Sep 2018 17:47:12 GMT Wind Speed Probabilities last updated Thu, 13 Sep 2018 15:34:26 GMT
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Summary for Tropical Storm Isaac (AT4/AL092018)
2018-09-13 19:46:51| National Hurricane Center (Atlantic)
...ISAAC BECOMING LESS ORGANIZED OVER THE EASTERN CARIBBEAN SEA... As of 2:00 PM AST Thu Sep 13 the center of Isaac was located near 14.9, -62.5 with movement W at 18 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 45 mph.
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