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Tropical Depression Two Forecast Discussion Number 2
2021-06-14 22:35:38| National Hurricane Center (Atlantic)
Issued at 500 PM EDT Mon Jun 14 2021 000 WTNT42 KNHC 142035 TCDAT2 Tropical Depression Two Discussion Number 2 NWS National Hurricane Center Miami FL AL022021 500 PM EDT Mon Jun 14 2021 Deep convection has weakened some this afternoon near the center of the depression, and the cloud pattern definitely is showing signs of shear. However, visible satellite imagery still indicates that it has a tight circulation, and past experience suggests with that kind of low-level structure, the depression is close to becoming a tropical storm. None of the conventional intensity estimates, however, show the system as a storm yet, and since scatterometer data also totally missed this morning, 30 kt will stay as the initial wind speed. No change is made to the intensity forecast from the last advisory, with the system having about 24 hours of time over marginally warm water to intensify. Afterwards, the cyclone should quickly lose convection and transition into an extratropical low, and dissipate near Newfoundland. This forecast is somewhat higher than the the guidance consensus on this cycle, but given that I was on the low side on the first forecast compared to guidance, I decided to hold steady and not waffle like the models are prone to doing. The depression is moving northeastward at about 16 kt, a little slower than before. Model guidance is in excellent agreement on large trough over eastern North America causing the depression to accelerate quite a bit in that general direction during the next day or two. The northeastward track is forecast to continue until the system dissipates near Newfoundland on Wednesday while it is absorbed by a larger extratropical low. The model guidance has shifted a little south of the previous advisory, and the NHC track prediction is shifted in that direction. FORECAST POSITIONS AND MAX WINDS INIT 14/2100Z 35.5N 72.0W 30 KT 35 MPH 12H 15/0600Z 37.5N 68.3W 40 KT 45 MPH 24H 15/1800Z 40.9N 62.5W 45 KT 50 MPH 36H 16/0600Z 45.0N 57.0W 40 KT 45 MPH...POST-TROP/EXTRATROP 48H 16/1800Z...DISSIPATED $$ Forecaster Blake
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Tropical Depression Two Wind Speed Probabilities Number 2
2021-06-14 22:34:40| National Hurricane Center (Atlantic)
Issued at 2100 UTC MON JUN 14 2021 000 FONT12 KNHC 142034 PWSAT2 TROPICAL DEPRESSION TWO WIND SPEED PROBABILITIES NUMBER 2 NWS NATIONAL HURRICANE CENTER MIAMI FL AL022021 2100 UTC MON JUN 14 2021 AT 2100Z THE CENTER OF TROPICAL DEPRESSION TWO WAS LOCATED NEAR LATITUDE 35.5 NORTH...LONGITUDE 72.0 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 18Z 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 18Z MON 06Z TUE 18Z TUE 06Z WED 18Z WED 18Z THU 18Z FRI PERIODS TO TO TO TO TO TO TO 06Z TUE 18Z TUE 06Z WED 18Z WED 18Z THU 18Z FRI 18Z SAT FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT CAPE RACE NFLD 34 X X( X) 3( 3) X( 3) X( 3) X( 3) X( 3) ILE ST PIERRE 34 X X( X) 7( 7) X( 7) X( 7) X( 7) X( 7) SABLE ISLAND 34 X 1( 1) 24(25) X(25) X(25) X(25) X(25) SABLE ISLAND 50 X X( X) 3( 3) X( 3) X( 3) X( 3) X( 3) $$ FORECASTER BLAKE
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Summary for Tropical Depression Two (AT2/AL022021)
2021-06-14 22:34:10| National Hurricane Center (Atlantic)
...DEPRESSION EXPECTED TO BECOME A TROPICAL STORM TONIGHT... As of 5:00 PM EDT Mon Jun 14 the center of Two was located near 35.5, -72.0 with movement NE at 18 mph. The minimum central pressure was 1006 mb with maximum sustained winds of about 35 mph.
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Tropical Depression Two Public Advisory Number 2
2021-06-14 22:34:10| National Hurricane Center (Atlantic)
Issued at 500 PM EDT Mon Jun 14 2021 000 WTNT32 KNHC 142033 TCPAT2 BULLETIN Tropical Depression Two Advisory Number 2 NWS National Hurricane Center Miami FL AL022021 500 PM EDT Mon Jun 14 2021 ...DEPRESSION EXPECTED TO BECOME A TROPICAL STORM TONIGHT... SUMMARY OF 500 PM EDT...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...35.5N 72.0W ABOUT 200 MI...320 KM E OF CAPE HATTERAS NORTH CAROLINA MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...NE OR 55 DEGREES AT 18 MPH...30 KM/H MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 500 PM EDT (2100 UTC), the center of Tropical Depression Two was located near latitude 35.5 North, longitude 72.0 West. The depression is moving toward the northeast near 18 mph, and this general motion is expected through Wednesday with increasing forward speed. Maximum sustained winds are near 35 mph (55 km/h) with higher gusts. The depression is expected to become a tropical storm by tonight and could continue to strengthen on Tuesday. The system is expected to become a post-tropical low and dissipate on Wednesday. The estimated minimum central pressure is 1006 mb (29.71 inches). HAZARDS AFFECTING LAND ---------------------- None NEXT ADVISORY ------------- Next complete advisory at 1100 PM EDT. $$ Forecaster Blake
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Tropical Depression Two Forecast Advisory Number 2
2021-06-14 22:33:38| National Hurricane Center (Atlantic)
Issued at 2100 UTC MON JUN 14 2021 000 WTNT22 KNHC 142033 TCMAT2 TROPICAL DEPRESSION TWO FORECAST/ADVISORY NUMBER 2 NWS NATIONAL HURRICANE CENTER MIAMI FL AL022021 2100 UTC MON JUN 14 2021 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 35.5N 72.0W AT 14/2100Z POSITION ACCURATE WITHIN 20 NM PRESENT MOVEMENT TOWARD THE NORTHEAST OR 55 DEGREES AT 16 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 35.5N 72.0W AT 14/2100Z AT 14/1800Z CENTER WAS LOCATED NEAR 34.9N 73.1W FORECAST VALID 15/0600Z 37.5N 68.3W MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 30NE 60SE 30SW 0NW. FORECAST VALID 15/1800Z 40.9N 62.5W MAX WIND 45 KT...GUSTS 55 KT. 34 KT... 30NE 90SE 60SW 0NW. FORECAST VALID 16/0600Z 45.0N 57.0W...POST-TROP/EXTRATROP MAX WIND 40 KT...GUSTS 50 KT. 34 KT... 0NE 60SE 60SW 0NW. FORECAST VALID 16/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 35.5N 72.0W NEXT ADVISORY AT 15/0300Z $$ FORECASTER BLAKE
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