je.st
news
Tag: cyclone
Post-Tropical Cyclone Humberto Graphics
2019-09-20 04:51:37| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Fri, 20 Sep 2019 02:51:37 GMT Wind Speed Probabilities last updated Fri, 20 Sep 2019 02:51:37 GMT
Tags: graphics
cyclone
posttropical
Post-Tropical Cyclone Humberto Forecast Discussion Number 30
2019-09-20 04:49:08| National Hurricane Center (Atlantic)
Issued at 1100 PM AST Thu Sep 19 2019 000 WTNT44 KNHC 200249 TCDAT4 Post-Tropical Cyclone Humberto Discussion Number 30 NWS National Hurricane Center Miami FL AL092019 1100 PM AST Thu Sep 19 2019 Satellite images show what little deep convection remains has been displaced well to the north of the center of the cyclone, and it can no longer be classified via the Dvorak technique. Moreover, cold air stratocumulus clouds over the western and southern portions of the circulation are indicative of cold air advection that is characteristic of an extratropical cyclone. Therefore, Humberto is now post-tropical and this will be the last advisory issued by the National Hurricane Center on this system. It is estimated that the cyclone still has hurricane-force winds and based on continuity from previous estimates with a gradual weakening rate, the current intensity is set at 85 kt. Continued gradual weakening is likely, and after 48 hours the system is expected to merge with another extratropical low over the north Atlantic. The cyclone has turned north-northeastward along the eastern side of a deep layer cyclonic circulation, with a current motion estimate of 030/17 kt. A turn toward the east-northeast is expected in a day or so as the system moves within the mid-latitude westerlies until dissipation. Key Messages: 1. Large swells will continue to affect Bermuda, the northwestern Bahamas, and the east coast of the United States from east-central Florida to the Mid-Atlantic States during the next couple of days. These swells could create life-threatening surf and rip current conditions. FORECAST POSITIONS AND MAX WINDS INIT 20/0300Z 40.0N 58.0W 85 KT 100 MPH...POST-TROP/EXTRATROP 12H 20/1200Z 41.8N 56.8W 70 KT 80 MPH...POST-TROP/EXTRATROP 24H 21/0000Z 44.0N 54.0W 60 KT 70 MPH...POST-TROP/EXTRATROP 36H 21/1200Z 45.5N 48.0W 55 KT 65 MPH...POST-TROP/EXTRATROP 48H 22/0000Z 46.5N 40.5W 50 KT 60 MPH...POST-TROP/EXTRATROP 72H 23/0000Z...DISSIPATED $$ Forecaster Pasch
Tags: number
discussion
forecast
cyclone
Summary for Post-Tropical Cyclone Humberto (AT4/AL092019)
2019-09-20 04:48:38| National Hurricane Center (Atlantic)
...HUMBERTO BECOMES AN EXTRATROPICAL CYCLONE... ...THIS IS THE LAST ADVISORY... As of 11:00 PM AST Thu Sep 19 the center of Humberto was located near 40.0, -58.0 with movement NNE at 20 mph. The minimum central pressure was 965 mb with maximum sustained winds of about 100 mph.
Tags: summary
cyclone
at4al092019
posttropical
Post-Tropical Cyclone Humberto Public Advisory Number 30
2019-09-20 04:48:38| National Hurricane Center (Atlantic)
Issued at 1100 PM AST Thu Sep 19 2019 000 WTNT34 KNHC 200248 TCPAT4 BULLETIN Post-Tropical Cyclone Humberto Advisory Number 30 NWS National Hurricane Center Miami FL AL092019 1100 PM AST Thu Sep 19 2019 ...HUMBERTO BECOMES AN EXTRATROPICAL CYCLONE... ...THIS IS THE LAST ADVISORY... SUMMARY OF 1100 PM AST...0300 UTC...INFORMATION ----------------------------------------------- LOCATION...40.0N 58.0W ABOUT 525 MI...845 KM SSW OF CAPE RACE NEWFOUNDLAND MAXIMUM SUSTAINED WINDS...100 MPH...155 KM/H PRESENT MOVEMENT...NNE OR 30 DEGREES AT 20 MPH...31 KM/H MINIMUM CENTRAL PRESSURE...965 MB...28.50 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 1100 PM AST (0300 UTC), the center of Post-Tropical Cyclone Humberto was located near latitude 40.0 North, longitude 58.0 West. The post-tropical cyclone is moving toward the north-northeast near 20 mph (31 km/h). A slower north-northeastward motion is expected tonight and Friday. A turn toward the east-northeast is expected to commence by Friday night. Maximum sustained winds are near 100 mph (155 km/h) with higher gusts. Gradual weakening is expected during the next couple of days. Hurricane-force winds extend outward up to 80 miles (130 km) from the center and tropical-storm-force winds extend outward up to 380 miles (610 km). The estimated minimum central pressure is 965 mb (28.50 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Large swells and dangerous surf generated by Humberto will continue along the coast of Bermuda during the next day or two, and these could continue to cause coastal flooding. Swells will continue to affect the northwestern Bahamas and much of the coast of the United States from east-central Florida to the Mid-Atlantic States during the next couple of days. These swells could cause life-threatening surf and rip current conditions. Please consult products from your local weather office and the Bermuda Weather Service. NEXT ADVISORY ------------- This is the last public advisory issued by the National Hurricane Center on this system. Additional information on this system can be found in High Seas Forecasts issued by the National Weather Service, under AWIPS header NFDHSFAT1, WMO header FZNT01 KWBC, and online at ocean.weather.gov/shtml/NFDHSFAT1.php $$ Forecaster Pasch
Tags: number
public
advisory
cyclone
Post-Tropical Cyclone Humberto Wind Speed Probabilities Number 30
2019-09-20 04:48:38| National Hurricane Center (Atlantic)
Issued at 0300 UTC FRI SEP 20 2019 000 FONT14 KNHC 200248 PWSAT4 POST-TROPICAL CYCLONE HUMBERTO WIND SPEED PROBABILITIES NUMBER 30 NWS NATIONAL HURRICANE CENTER MIAMI FL AL092019 0300 UTC FRI SEP 20 2019 AT 0300Z THE CENTER OF POST-TROPICAL CYCLONE HUMBERTO WAS LOCATED NEAR LATITUDE 40.0 NORTH...LONGITUDE 58.0 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 85 KTS...100 MPH...155 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 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 00Z FRI 12Z FRI 00Z SAT 12Z SAT 00Z SUN 00Z MON 00Z TUE PERIODS TO TO TO TO TO TO TO 12Z FRI 00Z SAT 12Z SAT 00Z SUN 00Z MON 00Z TUE 00Z WED FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT HIBERNIA OILFD 34 X 5( 5) 38(43) 4(47) X(47) X(47) X(47) HIBERNIA OILFD 50 X X( X) 5( 5) 2( 7) X( 7) X( 7) X( 7) CAPE RACE NFLD 34 2 42(44) 10(54) X(54) X(54) X(54) X(54) CAPE RACE NFLD 50 X 1( 1) 2( 3) X( 3) X( 3) X( 3) X( 3) ILE ST PIERRE 34 8 25(33) X(33) X(33) X(33) X(33) X(33) BURGEO NFLD 34 1 9(10) X(10) X(10) X(10) X(10) X(10) PTX BASQUES 34 X 3( 3) X( 3) X( 3) X( 3) X( 3) X( 3) EDDY POINT NS 34 2 1( 3) X( 3) X( 3) X( 3) X( 3) X( 3) SYDNEY NS 34 6 5(11) X(11) X(11) X(11) X(11) X(11) SABLE ISLAND 34 74 1(75) X(75) X(75) X(75) X(75) X(75) $$ FORECASTER PASCH
Tags: number
speed
wind
cyclone
Sites : [161] [162] [163] [164] [165] [166] [167] [168] [169] [170] [171] [172] [173] [174] [175] [176] [177] [178] [179] [180] next »