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Summary for Tropical Storm Peter (AT1/AL162021)

2021-09-21 04:47:43| National Hurricane Center (Atlantic)

...RESILIENT PETER MAINTAINS ITS STRENGTH DESPITE STRONG SHEAR... ...EXPECTED TO PASS NORTH OF THE VIRGIN ISLANDS AND PUERTO RICO ON TUESDAY... As of 11:00 PM AST Mon Sep 20 the center of Peter was located near 19.8, -62.8 with movement WNW at 12 mph. The minimum central pressure was 1008 mb with maximum sustained winds of about 50 mph.

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Tropical Storm Peter Public Advisory Number 10

2021-09-21 04:47:43| National Hurricane Center (Atlantic)

Issued at 1100 PM AST Mon Sep 20 2021 000 WTNT31 KNHC 210247 TCPAT1 BULLETIN Tropical Storm Peter Advisory Number 10 NWS National Hurricane Center Miami FL AL162021 1100 PM AST Mon Sep 20 2021 ...RESILIENT PETER MAINTAINS ITS STRENGTH DESPITE STRONG SHEAR... ...EXPECTED TO PASS NORTH OF THE VIRGIN ISLANDS AND PUERTO RICO ON TUESDAY... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...19.8N 62.8W ABOUT 110 MI...180 KM N OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...WNW OR 285 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1008 MB...29.77 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 1100 PM AST (0300 UTC), the center of Tropical Storm Peter was located near latitude 19.8 North, longitude 62.8 West. Peter is moving toward the west-northwest near 12 mph (19 km/h). This general motion is expected to continue for the next day or so, followed by a turn to the northwest with a decrease in forward speed on Wednesday, and then a turn to the north by Wednesday night. On the forecast track, the center of Peter will pass north of the Virgin Islands and Puerto Rico on Tuesday. Recent satellite-derived wind data indicate that maximum sustained winds remain near 50 mph (85 km/h) with higher gusts. Slow weakening is forecast during the next few days. Tropical-storm-force winds extend outward up to 175 miles (280 km) from the center, primarily in the northeastern quadrant. The estimated minimum central pressure is 1008 mb (29.77 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 and the northern portions of Hispaniola through Tuesday. This rainfall may lead to areas of urban and small stream flooding. SURF: Swells generated by Peter are affecting the northern Leeward Islands and Puerto Rico, and will continue spreading westward to Hispaniola on Tuesday and the Bahamas on Wednesday. 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 500 AM AST. $$ Forecaster Reinhart

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Tropical Storm Peter Wind Speed Probabilities Number 10

2021-09-21 04:47:43| National Hurricane Center (Atlantic)

Issued at 0300 UTC TUE SEP 21 2021 000 FONT11 KNHC 210247 PWSAT1 TROPICAL STORM PETER WIND SPEED PROBABILITIES NUMBER 10 NWS NATIONAL HURRICANE CENTER MIAMI FL AL162021 0300 UTC TUE SEP 21 2021 AT 0300Z THE CENTER OF TROPICAL STORM PETER WAS LOCATED NEAR LATITUDE 19.8 NORTH...LONGITUDE 62.8 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 00Z TUE 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 00Z TUE 12Z TUE 00Z WED 12Z WED 00Z THU 00Z FRI 00Z SAT PERIODS TO TO TO TO TO TO TO 12Z TUE 00Z WED 12Z WED 00Z THU 00Z FRI 00Z SAT 00Z SUN FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT BERMUDA 34 X X( X) X( X) X( X) X( X) X( X) 5( 5) $$ FORECASTER REINHART

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Tropical Storm Peter Forecast Advisory Number 10

2021-09-21 04:46:14| National Hurricane Center (Atlantic)

Issued at 0300 UTC TUE SEP 21 2021 000 WTNT21 KNHC 210246 TCMAT1 TROPICAL STORM PETER FORECAST/ADVISORY NUMBER 10 NWS NATIONAL HURRICANE CENTER MIAMI FL AL162021 0300 UTC TUE SEP 21 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 19.8N 62.8W AT 21/0300Z POSITION ACCURATE WITHIN 40 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 285 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1008 MB MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT. 34 KT.......150NE 0SE 0SW 0NW. 12 FT SEAS..150NE 0SE 0SW 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 19.8N 62.8W AT 21/0300Z AT 21/0000Z CENTER WAS LOCATED NEAR 19.8N 62.1W FORECAST VALID 21/1200Z 20.4N 64.2W MAX WIND 40 KT...GUSTS 50 KT. 34 KT...120NE 0SE 0SW 0NW. FORECAST VALID 22/0000Z 21.3N 66.0W MAX WIND 40 KT...GUSTS 50 KT. 34 KT...100NE 0SE 0SW 0NW. FORECAST VALID 22/1200Z 22.3N 67.2W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 70NE 0SE 0SW 0NW. FORECAST VALID 23/0000Z 23.2N 67.7W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 60NE 0SE 0SW 0NW. FORECAST VALID 23/1200Z 24.0N 67.7W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 24/0000Z 25.1N 67.2W 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 25/0000Z 27.5N 66.0W MAX WIND 30 KT...GUSTS 40 KT. OUTLOOK VALID 26/0000Z 30.5N 64.5W MAX WIND 30 KT...GUSTS 40 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 19.8N 62.8W NEXT ADVISORY AT 21/0900Z $$ FORECASTER REINHART

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