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Tropical Depression Chantal Wind Speed Probabilities Number 11
2019-08-23 16:35:11| National Hurricane Center (Atlantic)
Issued at 1500 UTC FRI AUG 23 2019 ZCZC MIAPWSAT4 ALL TTAA00 KNHC DDHHMM TROPICAL DEPRESSION CHANTAL WIND SPEED PROBABILITIES NUMBER 11 NWS NATIONAL HURRICANE CENTER MIAMI FL AL042019 1500 UTC FRI AUG 23 2019 AT 1500Z THE CENTER OF TROPICAL DEPRESSION CHANTAL WAS LOCATED NEAR LATITUDE 36.6 NORTH...LONGITUDE 40.8 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 25 KTS...30 MPH...45 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 FRI 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 FRI 00Z SAT 12Z SAT 00Z SUN 12Z SUN 12Z MON 12Z TUE PERIODS TO TO TO TO TO TO TO 00Z SAT 12Z SAT 00Z SUN 12Z SUN 12Z MON 12Z TUE 12Z WED FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT $$ FORECASTER BEVEN NNNN
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Summary for Tropical Depression Chantal (AT4/AL042019)
2019-08-23 16:35:01| National Hurricane Center (Atlantic)
...CHANTAL FORECAST TO BECOME A REMNANT LOW BY TONIGHT... As of 11:00 AM AST Fri Aug 23 the center of Chantal was located near 36.6, -40.8 with movement SSE at 7 mph. The minimum central pressure was 1012 mb with maximum sustained winds of about 30 mph.
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Tropical Depression Chantal Public Advisory Number 11
2019-08-23 16:35:01| National Hurricane Center (Atlantic)
Issued at 1100 AM AST Fri Aug 23 2019 000 WTNT34 KNHC 231434 TCPAT4 BULLETIN Tropical Depression Chantal Advisory Number 11 NWS National Hurricane Center Miami FL AL042019 1100 AM AST Fri Aug 23 2019 ...CHANTAL FORECAST TO BECOME A REMNANT LOW BY TONIGHT... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...36.6N 40.8W ABOUT 765 MI...1230 KM W OF THE AZORES MAXIMUM SUSTAINED WINDS...30 MPH...45 KM/H PRESENT MOVEMENT...SSE OR 155 DEGREES AT 7 MPH...11 KM/H MINIMUM CENTRAL PRESSURE...1012 MB...29.89 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM AST (1500 UTC), the center of Tropical Depression Chantal was located near latitude 36.6 North, longitude 40.8 West. The depression is moving toward the south-southeast near 7 mph (11 km/h) and it is expected to make a slow clockwise loop during the next few days. Maximum sustained winds are near 30 mph (45 km/h) with higher gusts. Weakening is forecast, and Chantal is likely to degenerate into a remnant low by tonight. The remnant low could dissipate by late Sunday or Monday. The estimated minimum central pressure is 1012 mb (29.89 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 500 PM AST. $$ Forecaster Beven
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Tropical Depression Chantal Graphics
2019-08-23 10:39:36| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Fri, 23 Aug 2019 08:39:36 GMT Wind Speed Probabilities last updated Fri, 23 Aug 2019 09:24:23 GMT
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Tropical Depression Chantal Forecast Discussion Number 10
2019-08-23 10:38:56| National Hurricane Center (Atlantic)
Issued at 500 AM AST Fri Aug 23 2019 000 WTNT44 KNHC 230838 TCDAT4 Tropical Depression Chantal Discussion Number 10 NWS National Hurricane Center Miami FL AL042019 500 AM AST Fri Aug 23 2019 Chantal's convection has become quite meager, with small intermittent bursts continuing mainly to the east of the center. Given the decreasing convective organization, Dvorak Current Intensity numbers from TAFB and SAB are down to 1.5, and the initial intensity is therefore lowered to 25 kt. Large-scale subsidence and a very dry air mass are making it harder and harder for Chantal to maintain organized deep convection, and it's likely that the depression will degenerate into a remnant low within the next 24 hours. Each of the global models shows the remnant low hanging around for various periods of time, but the official forecast continues to show dissipation in 72 hours, which is in closest agreement with the ECMWF model. Chantal is moving southeastward, or 140/7 kt. High pressure in the lower levels of the atmosphere is expected to jump from the southwest to the northeast of Chantal during the next couple of days, which will cause the depression/remnant low to move slowly southward and then westward before dissipating. The latest track guidance (and thus the official forecast) shows a more sweeping curved trajectory than before, but in the grand scheme of things the change is not that significant. The new NHC forecast generally lies between the TVCX and HCCA consensus aids. FORECAST POSITIONS AND MAX WINDS INIT 23/0900Z 37.1N 40.9W 25 KT 30 MPH 12H 23/1800Z 36.3N 40.7W 25 KT 30 MPH 24H 24/0600Z 35.4N 41.4W 25 KT 30 MPH...POST-TROP/REMNT LOW 36H 24/1800Z 35.2N 42.7W 20 KT 25 MPH...POST-TROP/REMNT LOW 48H 25/0600Z 35.4N 43.8W 20 KT 25 MPH...POST-TROP/REMNT LOW 72H 26/0600Z...DISSIPATED $$ Forecaster Berg
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