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Tropical Storm Peter Public Advisory Number 7

2021-09-20 10:41:19| National Hurricane Center (Atlantic)

Issued at 500 AM AST Mon Sep 20 2021 000 WTNT31 KNHC 200841 TCPAT1 BULLETIN Tropical Storm Peter Advisory Number 7 NWS National Hurricane Center Miami FL AL162021 500 AM AST Mon Sep 20 2021 ...RECONNAISSANCE AIRCRAFT FINDS PETER HAS CHANGED LITTLE... ...TROPICAL STORM EXPECTED TO PASS NORTH OF THE LEEWARD ISLANDS EARLY THIS WEEK... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...19.1N 59.5W ABOUT 245 MI...390 KM ENE OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 14 MPH...22 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. Interests in the northern Leeward Islands, Virgin Islands, and Puerto Rico should monitor the progress of this system. DISCUSSION AND OUTLOOK ---------------------- At 500 AM AST (0900 UTC), the center of Tropical Storm Peter was located near latitude 19.1 North, longitude 59.5 West. Peter is moving toward the west-northwest near 14 mph (22 km/h). This general motion is expected to continue during the next couple of days, followed by a turn to the northwest with a decrease in forward speed on Wednesday. Maximum sustained winds are near 50 mph (85 km/h) with higher gusts. Slow weakening is forecast during the next several days. Tropical-storm-force winds extend outward up to 125 miles (205 km), primarily to the northeast of the center. The estimated minimum central pressure is 1006 mb (29.71 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Rainfall around the southern periphery of Tropical Storm Peter could produce rainfall totals of 1 to 3 inches, with locally higher amounts possible, across portions of the Northern Leeward Islands, including the Virgin Islands, as well as Puerto Rico through Tuesday. This rainfall may lead to areas of urban and small stream flooding. SURF: Swells generated by Peter are expected to affect the northern Leeward Islands early this week, and then reach the Bahamas by midweek. These swells could cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 1100 AM AST. $$ Forecaster Stewart

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Tropical Storm Peter Wind Speed Probabilities Number 7

2021-09-20 10:41:19| National Hurricane Center (Atlantic)

Issued at 0900 UTC MON SEP 20 2021 000 FONT11 KNHC 200841 PWSAT1 TROPICAL STORM PETER WIND SPEED PROBABILITIES NUMBER 7 NWS NATIONAL HURRICANE CENTER MIAMI FL AL162021 0900 UTC MON SEP 20 2021 AT 0900Z THE CENTER OF TROPICAL STORM PETER WAS LOCATED NEAR LATITUDE 19.1 NORTH...LONGITUDE 59.5 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 45 KTS...50 MPH...85 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) ATLANTIC STANDARD TIME (AST)...SUBTRACT 4 HOURS FROM Z TIME EASTERN DAYLIGHT TIME (EDT)...SUBTRACT 4 HOURS FROM Z TIME CENTRAL DAYLIGHT TIME (CDT)...SUBTRACT 5 HOURS FROM Z TIME WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST ...34 KT (39 MPH... 63 KM/H)... ...50 KT (58 MPH... 93 KM/H)... ...64 KT (74 MPH...119 KM/H)... FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY) (CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN 06Z MON AND THE FORECAST HOUR (CUMULATIVE PROBABILITY) PROBABILITIES ARE GIVEN IN PERCENT X INDICATES PROBABILITIES LESS THAN 1 PERCENT PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT. PROBABILITIES FOR 34...50...64 KT SHOWN WHEN THE 5-DAY 64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT. - - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - - FROM FROM FROM FROM FROM FROM FROM TIME 06Z MON 18Z MON 06Z TUE 18Z TUE 06Z WED 06Z THU 06Z FRI PERIODS TO TO TO TO TO TO TO 18Z MON 06Z TUE 18Z TUE 06Z WED 06Z THU 06Z FRI 06Z SAT FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT $$ FORECASTER STEWART

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Tropical Storm Peter Forecast Advisory Number 7

2021-09-20 10:40:51| National Hurricane Center (Atlantic)

Issued at 0900 UTC MON SEP 20 2021 000 WTNT21 KNHC 200840 TCMAT1 TROPICAL STORM PETER FORECAST/ADVISORY NUMBER 7 NWS NATIONAL HURRICANE CENTER MIAMI FL AL162021 0900 UTC MON SEP 20 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. INTERESTS IN THE NORTHERN LEEWARD ISLANDS...VIRGIN ISLANDS...AND PUERTO RICO SHOULD MONITOR THE PROGRESS OF THIS SYSTEM. TROPICAL STORM CENTER LOCATED NEAR 19.1N 59.5W AT 20/0900Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 290 DEGREES AT 12 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT. 34 KT.......110NE 0SE 0SW 0NW. 12 FT SEAS..210NE 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 19.1N 59.5W AT 20/0900Z AT 20/0600Z CENTER WAS LOCATED NEAR 18.9N 58.9W FORECAST VALID 20/1800Z 19.7N 61.4W MAX WIND 40 KT...GUSTS 50 KT. 34 KT...110NE 0SE 0SW 0NW. FORECAST VALID 21/0600Z 20.4N 63.6W MAX WIND 40 KT...GUSTS 50 KT. 34 KT...110NE 0SE 0SW 0NW. FORECAST VALID 21/1800Z 21.4N 65.5W MAX WIND 35 KT...GUSTS 45 KT. 34 KT...100NE 0SE 0SW 0NW. FORECAST VALID 22/0600Z 22.4N 67.2W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 80NE 0SE 0SW 0NW. FORECAST VALID 22/1800Z 23.2N 68.0W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 23/0600Z 24.2N 68.4W 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 24/0600Z 26.2N 67.8W MAX WIND 25 KT...GUSTS 35 KT. OUTLOOK VALID 25/0600Z 28.5N 66.8W MAX WIND 30 KT...GUSTS 40 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 19.1N 59.5W NEXT ADVISORY AT 20/1500Z $$ FORECASTER STEWART

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Tropical Storm Peter Graphics

2021-09-20 04:51:57| National Hurricane Center (Atlantic)

5-Day Uncertainty Track last updated Mon, 20 Sep 2021 02:51:57 GMT Wind Speed Probabilities last updated Mon, 20 Sep 2021 03:22:38 GMT

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Tropical Storm Rose Graphics

2021-09-20 04:51:14| National Hurricane Center (Atlantic)

5-Day Uncertainty Track last updated Mon, 20 Sep 2021 02:51:14 GMT Wind Speed Probabilities last updated Mon, 20 Sep 2021 03:28:39 GMT

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