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Summary for Tropical Storm Peter (AT1/AL162021)

2021-09-19 10:35:51| National Hurricane Center (Atlantic)

...DEPRESSION BECOMES THE SIXTEENTH NAMED STORM OF THE SEASON OVER THE OPEN ATLANTIC... As of 5:00 AM AST Sun Sep 19 the center of Peter was located near 18.0, -53.5 with movement NW at 15 mph. The minimum central pressure was 1005 mb with maximum sustained winds of about 40 mph.

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Tropical Storm Peter Public Advisory Number 2

2021-09-19 10:35:51| National Hurricane Center (Atlantic)

Issued at 500 AM AST Sun Sep 19 2021 000 WTNT31 KNHC 190835 TCPAT1 BULLETIN Tropical Storm Peter Advisory Number 2 NWS National Hurricane Center Miami FL AL162021 500 AM AST Sun Sep 19 2021 ...DEPRESSION BECOMES THE SIXTEENTH NAMED STORM OF THE SEASON OVER THE OPEN ATLANTIC... SUMMARY OF 500 AM AST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...18.0N 53.5W ABOUT 630 MI...1015 KM E OF THE NORTHERN LEEWARD ISLANDS MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...NW OR 305 DEGREES AT 15 MPH...24 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 18.0 North, longitude 53.5 West. Peter is moving toward the northwest near 15 mph (24 km/h), and this general motion is expected to continue this morning. A turn back toward the west-northwest is forecast to occur by this afternoon, with that motion continuing into Wednesday. On the forecast track, Peter is expected to pass well to the north of the northern Leeward Islands on Monday and Tuesday. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Some additional strengthening is forecast during the next day or so, followed by a slow weakening trend by late Monday and on Tuesday. Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center, mainly to the northeast and southeast of the center. The estimated minimum central pressure is 1005 mb (29.68 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: The outer bands south of the Tropical Storm Peter could produce rainfall totals of 1 to 2 inches across portions of the Northern Leeward Islands, including the Virgin Islands, as well as Puerto Rico late Sunday into Tuesday. This rainfall may lead to areas of urban and small stream flooding. SURF: Swells generated by Tropical Storm Peter are expected to reach the northern Leeward Islands Sunday night and Monday. 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 2

2021-09-19 10:35:51| National Hurricane Center (Atlantic)

Issued at 0900 UTC SUN SEP 19 2021 000 FONT11 KNHC 190835 PWSAT1 TROPICAL STORM PETER WIND SPEED PROBABILITIES NUMBER 2 NWS NATIONAL HURRICANE CENTER MIAMI FL AL162021 0900 UTC SUN SEP 19 2021 AT 0900Z THE CENTER OF TROPICAL STORM PETER WAS LOCATED NEAR LATITUDE 18.0 NORTH...LONGITUDE 53.5 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 35 KTS...40 MPH...65 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 SUN 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 SUN 18Z SUN 06Z MON 18Z MON 06Z TUE 06Z WED 06Z THU PERIODS TO TO TO TO TO TO TO 18Z SUN 06Z MON 18Z MON 06Z TUE 06Z WED 06Z THU 06Z FRI FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT BERMUDA 34 X X( X) X( X) X( X) X( X) X( X) 3( 3) $$ FORECASTER STEWART

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Tropical Storm Peter Forecast Advisory Number 2

2021-09-19 10:35:20| National Hurricane Center (Atlantic)

Issued at 0900 UTC SUN SEP 19 2021 000 WTNT21 KNHC 190835 TCMAT1 TROPICAL STORM PETER FORECAST/ADVISORY NUMBER 2 NWS NATIONAL HURRICANE CENTER MIAMI FL AL162021 0900 UTC SUN SEP 19 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 18.0N 53.5W AT 19/0900Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 305 DEGREES AT 13 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1005 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 40NE 40SE 0SW 0NW. 12 FT SEAS..120NE 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 18.0N 53.5W AT 19/0900Z AT 19/0600Z CENTER WAS LOCATED NEAR 17.6N 52.9W FORECAST VALID 19/1800Z 18.8N 55.3W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 50NE 0SE 0SW 40NW. FORECAST VALID 20/0600Z 19.8N 57.8W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 60NE 40SE 0SW 50NW. FORECAST VALID 20/1800Z 20.8N 60.1W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 80NE 50SE 0SW 50NW. FORECAST VALID 21/0600Z 21.7N 62.2W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 90NE 50SE 0SW 50NW. FORECAST VALID 21/1800Z 22.7N 63.9W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 80NE 40SE 0SW 0NW. FORECAST VALID 22/0600Z 23.7N 64.9W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 70NE 40SE 0SW 0NW. 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 23/0600Z 25.8N 65.6W MAX WIND 35 KT...GUSTS 45 KT. OUTLOOK VALID 24/0600Z 27.7N 65.2W MAX WIND 35 KT...GUSTS 45 KT. REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 18.0N 53.5W NEXT ADVISORY AT 19/1500Z $$ FORECASTER STEWART

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