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Summary for Post-Tropical Cyclone Helene (AT3/AL082018)

2018-09-16 16:42:15| National Hurricane Center (Atlantic)

...HELENE NOW A POST-TROPICAL CYCLONE... ...THIS IS THE LAST ADVISORY... As of 11:00 AM AST Sun Sep 16 the center of Helene was located near 43.8, -25.7 with movement NE at 29 mph. The minimum central pressure was 989 mb with maximum sustained winds of about 50 mph.

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Post-Tropical Cyclone Helene Public Advisory Number 37

2018-09-16 16:42:15| National Hurricane Center (Atlantic)

Issued at 1100 AM AST Sun Sep 16 2018 464 WTNT33 KNHC 161442 TCPAT3 BULLETIN Post-Tropical Cyclone Helene Advisory Number 37 NWS National Hurricane Center Miami FL AL082018 1100 AM AST Sun Sep 16 2018 ...HELENE NOW A POST-TROPICAL CYCLONE... ...THIS IS THE LAST ADVISORY... SUMMARY OF 1100 AM AST...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...43.8N 25.7W ABOUT 405 MI...655 KM N OF THE AZORES MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...NE OR 55 DEGREES AT 29 MPH...46 KM/H MINIMUM CENTRAL PRESSURE...989 MB...29.21 INCHES WATCHES AND WARNINGS -------------------- SUMMARY OF WATCHES AND WARNINGS IN EFFECT: None. Interests in Ireland and the United Kingdom should consult products from their local meteorological service for information about potential impacts from Post-Tropical Helene in those locations. Local forecasts and warnings for the UK can be found on the website of the UK Met Office at https://www.metoffice.gov.uk/. Local forecasts and warnings for Ireland can be found on the website of Met Eireann at https://www.met.ie/. DISCUSSION AND OUTLOOK ---------------------- At 1100 AM AST (1500 UTC), the center of Post-Tropical Cyclone Helene was located near latitude 43.8 North, longitude 25.7 West. The post-tropical cyclone is moving toward the northeast near 29 mph (46 km/h), and this motion is expected to continue with an increase in forward speed during the next 24 hours. On the forecast track, the post-tropical cyclone will approach Ireland and the United Kingdom on Monday. Maximum sustained winds are near 50 mph (85 km/h) with higher gusts. Some slight strengthening is possible today. Some weakening is expected by Monday, and the system is forecast to be absorbed by another low pressure area by early Tuesday. Tropical-storm-force winds extend outward up to 230 miles (370 km) from the center. The estimated minimum central pressure is 989 mb (29.21 inches). HAZARDS AFFECTING LAND ---------------------- Information on rainfall and wind forecasts for Ireland can be found in products issued by Met Eireann at www.met.ie and for the United Kingdom in products issued by the United Kingdom Met Office at www.metoffice.gov/uk. SURF: Swells generated by Helene are affecting portions of the Azores. These swells are likely to continue for another day or so and could cause life-threatening surf and rip current conditions. Please consult products from your local weather office. 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 Meteo France under WMO header FQNT50 LFPW and available on the web at: http://www.meteofrance.com/previsions-meteo-marine/bulletin. Additional information can also be found in High Seas Forecast issued by the UK Met Office under WMO header FQNT21 EGRR and on the web at: http://www.metoffice.gov.uk/public/weather/marine-high-seas/. $$ Forecaster Brown

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Post-Tropical Cyclone Helene Forecast Advisory Number 37

2018-09-16 16:41:48| National Hurricane Center (Atlantic)

Issued at 1500 UTC SUN SEP 16 2018 946 WTNT23 KNHC 161441 TCMAT3 POST-TROPICAL CYCLONE HELENE FORECAST/ADVISORY NUMBER 37 NWS NATIONAL HURRICANE CENTER MIAMI FL AL082018 1500 UTC SUN SEP 16 2018 SUMMARY OF WATCHES AND WARNINGS IN EFFECT... NONE. INTERESTS IN IRELAND AND THE UNITED KINGDOM SHOULD CONSULT PRODUCTS FROM THEIR LOCAL METEOROLOGICAL SERVICE FOR INFORMATION ABOUT POTENTIAL IMPACTS FROM POST-TROPICAL HELENE IN THOSE LOCATIONS. LOCAL FORECASTS AND WARNINGS FOR THE UK CAN BE FOUND ON THE WEBSITE OF THE UK MET OFFICE AT HTTPS... //WWW.METOFFICE.GOV.UK/. LOCAL FORECASTS AND WARNINGS FOR IRELAND CAN BE FOUND ON THE WEBSITE OF MET EIREANN AT HTTPS... //WWW.MET.IE/. POST-TROPICAL CYCLONE CENTER LOCATED NEAR 43.8N 25.7W AT 16/1500Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTHEAST OR 55 DEGREES AT 25 KT ESTIMATED MINIMUM CENTRAL PRESSURE 989 MB MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT. 34 KT.......120NE 200SE 160SW 120NW. 12 FT SEAS..150NE 270SE 330SW 240NW. 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 43.8N 25.7W AT 16/1500Z AT 16/1200Z CENTER WAS LOCATED NEAR 43.1N 27.1W FORECAST VALID 17/0000Z 45.8N 21.2W...POST-TROP/EXTRATROP MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 0NE 120SE 120SW 0NW. 34 KT...180NE 210SE 210SW 120NW. FORECAST VALID 17/1200Z 49.0N 14.8W...POST-TROP/EXTRATROP MAX WIND 50 KT...GUSTS 60 KT. 50 KT... 0NE 120SE 0SW 0NW. 34 KT...150NE 210SE 210SW 90NW. FORECAST VALID 18/0000Z 52.8N 6.2W...POST-TROP/EXTRATROP MAX WIND 40 KT...GUSTS 50 KT. 34 KT...120NE 160SE 160SW 0NW. FORECAST VALID 18/1200Z...ABSORBED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 43.8N 25.7W THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE NATIONAL HURRICANE CENTER ON THIS SYSTEM. ADDITIONAL INFORMATION ON THIS SYSTEM CAN BE FOUND IN HIGH SEAS FORECASTS ISSUED BY METEO FRANCE...UNDER WMO HEADER FQNT50 LFPW, AND IN HIGH SEAS FORECASTS ISSUED BY THE UK MET OFFICE...UNDER WMO HEADER FQNT21 EGRR. $$ FORECASTER BROWN

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Post-Tropical Cyclone Paul Graphics

2018-09-12 10:38:42| National Hurricane Center (East Pacific)

5-Day Uncertainty Track last updated Wed, 12 Sep 2018 08:38:42 GMT Wind Speed Probabilities last updated Wed, 12 Sep 2018 08:38:42 GMT

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Post-Tropical Cyclone Paul Forecast Discussion Number 16

2018-09-12 10:37:06| National Hurricane Center (East Pacific)

Issued at 200 AM PDT Wed Sep 12 2018 641 WTPZ43 KNHC 120837 TCDEP3 Post-Tropical Cyclone Paul Discussion Number 16 NWS National Hurricane Center Miami FL EP182018 200 AM PDT Wed Sep 12 2018 For the first time since 14 August, the northeast Pacific has no tropical cyclones. Paul has lacked organized deep convection for over 12 hours and has therefore been declared a remnant low. The initial intensity is still 30 kt, based on ASCAT data from around 0500 UTC which showed a few wind vectors between 25 and 30 kt, but weakening should resume soon due to the lack of deep convection. The remnant low is moving west at around 8 kt, and a west to west-southwest motion with a decrease in forward speed is expected for the next few days until dissipation occurs later this week. This is the last NHC advisory on Paul. For additional information on the remnant low please see High Seas Forecasts issued by the National Weather Service on the web at https://ocean.weather.gov/shtml/NFDHSFEPI.shtml. FORECAST POSITIONS AND MAX WINDS INIT 12/0900Z 22.3N 127.4W 30 KT 35 MPH...POST-TROPICAL 12H 12/1800Z 22.4N 128.7W 25 KT 30 MPH...POST-TROP/REMNT LOW 24H 13/0600Z 22.4N 130.3W 25 KT 30 MPH...POST-TROP/REMNT LOW 36H 13/1800Z 22.4N 131.3W 25 KT 30 MPH...POST-TROP/REMNT LOW 48H 14/0600Z 22.3N 131.8W 25 KT 30 MPH...POST-TROP/REMNT LOW 72H 15/0600Z 21.8N 132.4W 20 KT 25 MPH...POST-TROP/REMNT LOW 96H 16/0600Z...DISSIPATED $$ Forecaster Zelinsky

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