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Tropical Depression Peter Public Advisory Number 16
2021-09-22 16:43:04| National Hurricane Center (Atlantic)
Issued at 1100 AM AST Wed Sep 22 2021 000 WTNT31 KNHC 221442 TCPAT1 BULLETIN Tropical Depression Peter Advisory Number 16 NWS National Hurricane Center Miami FL AL162021 1100 AM AST Wed Sep 22 2021 ...PETER BARELY HANGING ON AS A TROPICAL CYCLONE... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...21.6N 66.9W ABOUT 225 MI...365 KM NNW OF SAN JUAN PUERTO RICO MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...NNW OR 330 DEGREES AT 7 MPH...11 KM/H MINIMUM CENTRAL PRESSURE...1008 MB...29.77 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM AST (1500 UTC), the center of Tropical Depression Peter was located near latitude 21.6 North, longitude 66.9 West. The depression is moving toward the north-northwest near 7 mph (11 km/h). A turn to the north is expected by tonight, followed by a north-northeastward or northeastward motion through the end of the week. On the forecast track, the center of Peter will continue moving away from the Virgin Islands and Puerto Rico. Maximum sustained winds remain near 35 mph (55 km/h) with higher gusts. Gradual weakening is expected during the next couple of days, and Peter is forecast to degenerate into a remnant low on Thursday. The estimated minimum central pressure is 1008 mb (29.77 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Peter are affecting the Virgin Islands, Puerto Rico, and Hispaniola, and will continue spreading westward to the Bahamas later today. 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 PM AST. $$ Forecaster Papin
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Tropical Depression Peter Wind Speed Probabilities Number 16
2021-09-22 16:43:04| National Hurricane Center (Atlantic)
Issued at 1500 UTC WED SEP 22 2021 000 FONT11 KNHC 221442 PWSAT1 TROPICAL DEPRESSION PETER WIND SPEED PROBABILITIES NUMBER 16 NWS NATIONAL HURRICANE CENTER MIAMI FL AL162021 1500 UTC WED SEP 22 2021 AT 1500Z THE CENTER OF TROPICAL DEPRESSION PETER WAS LOCATED NEAR LATITUDE 21.6 NORTH...LONGITUDE 66.9 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 30 KTS...35 MPH...55 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 12Z WED 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 12Z WED 00Z THU 12Z THU 00Z FRI 12Z FRI 12Z SAT 12Z SUN PERIODS TO TO TO TO TO TO TO 00Z THU 12Z THU 00Z FRI 12Z FRI 12Z SAT 12Z SUN 12Z MON FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT $$ FORECASTER PAPIN
Tropical Depression Peter Forecast Advisory Number 16
2021-09-22 16:41:36| National Hurricane Center (Atlantic)
Issued at 1500 UTC WED SEP 22 2021 000 WTNT21 KNHC 221441 TCMAT1 TROPICAL DEPRESSION PETER FORECAST/ADVISORY NUMBER 16 NWS NATIONAL HURRICANE CENTER MIAMI FL AL162021 1500 UTC WED SEP 22 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 21.6N 66.9W AT 22/1500Z POSITION ACCURATE WITHIN 40 NM PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 330 DEGREES AT 6 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1008 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. 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 21.6N 66.9W AT 22/1500Z AT 22/1200Z CENTER WAS LOCATED NEAR 21.3N 66.8W FORECAST VALID 23/0000Z 22.3N 67.2W MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 23/1200Z 23.3N 67.1W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 24/0000Z 24.2N 66.7W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 24/1200Z 25.1N 66.3W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 25/0000Z 26.3N 65.6W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 25/1200Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 21.6N 66.9W NEXT ADVISORY AT 22/2100Z $$ FORECASTER PAPIN
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Tropical Depression Rose Graphics
2021-09-22 16:40:02| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Wed, 22 Sep 2021 14:40:02 GMT Wind Speed Probabilities last updated Wed, 22 Sep 2021 14:40:03 GMT
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Tropical Depression Rose Forecast Discussion Number 14
2021-09-22 16:39:09| National Hurricane Center (Atlantic)
Issued at 1100 AM AST Wed Sep 22 2021 000 WTNT42 KNHC 221438 TCDAT2 Tropical Depression Rose Discussion Number 14 NWS National Hurricane Center Miami FL AL172021 1100 AM AST Wed Sep 22 2021 Rose is currently comprised of a swirl of low-level clouds with no significant convection, with an earlier burst dissipating during the last few hours. Recently received scatterometer data show 25-30 kt winds in the northeastern quadrant, so the initial intensity is held at 30 kt. The cyclone remains in an environment of northwesterly shear and upper-level convergence, and dry mid-level air has been entraining into the circulation. Since the shear is expected to increase during the next 2-3 days, the cyclone is expected to gradually weaken during this time. However, confidence in the timing of when the system will stop producing organized convection is still low. The new intensity forecast calls for Rose to degenerate into a remnant low between 60-72 h, but it is possible this could happen earlier. The initial motion is now 305/8 kt. The depression is expected to turn northward in 24-36 hours as it moves on the west side of a low- to mid-level ridge over the eastern Atlantic. By 48-60 h, a turn to the northeast is expected as Rose gets caught in the flow on the southeast side of a deep-layer trough over the north Atlantic. Based on the initial position and motion, the first 36 h of the forecast track are shifted a little to the west of the previous track. After that time, the new forecast track is similar to the previous track. FORECAST POSITIONS AND MAX WINDS INIT 22/1500Z 23.6N 39.2W 30 KT 35 MPH 12H 23/0000Z 24.6N 40.1W 30 KT 35 MPH 24H 23/1200Z 26.1N 41.1W 30 KT 35 MPH 36H 24/0000Z 27.6N 41.1W 30 KT 35 MPH 48H 24/1200Z 28.8N 39.9W 25 KT 30 MPH 60H 25/0000Z 29.4N 37.8W 25 KT 30 MPH 72H 25/1200Z 29.9N 34.9W 25 KT 30 MPH...POST-TROP/REMNT LOW 96H 26/1200Z 31.5N 30.5W 25 KT 30 MPH...POST-TROP/REMNT LOW 120H 27/1200Z...DISSIPATED $$ Forecaster Beven
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