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Post-Tropical Cyclone Flossie Forecast Discussion Number 19
2025-07-03 22:30:27| National Hurricane Center (East Pacific)
Issued at 200 PM MST Thu Jul 03 2025 000 WTPZ41 KNHC 032030 TCDEP1 Post-Tropical Cyclone Flossie Discussion Number 19 NWS National Hurricane Center Miami FL EP062025 200 PM MST Thu Jul 03 2025 Flossie has lacked organized deep convection for more than 12 hours and no longer meets the criteria of a tropical cyclone. Therefore, the system is now considered a post-tropical low, and this is the last NHC advisory. A 1705 UTC ASCAT-B pass indicated that the maximum winds have decreased to around 35 kt. The post-tropical cyclone is moving northwestward at 9 kt. This general motion, within the low-level flow, is expected to continue for the next couple of days. A combination of cool waters and dry air should lead to the dissipation of the post-tropical low this weekend. For additional information on the post-tropical low please see High Seas Forecasts issued by the National Weather Service, under AWIPS header NFDHSFEPI, WMO header FZPN02 KWBC, and on the web at ocean.weather.gov/shtml/NFDHSFEPI.php FORECAST POSITIONS AND MAX WINDS INIT 03/2100Z 21.2N 112.4W 35 KT 40 MPH...POST-TROPICAL 12H 04/0600Z 22.1N 113.5W 30 KT 35 MPH...POST-TROP/REMNT LOW 24H 04/1800Z 23.2N 115.1W 25 KT 30 MPH...POST-TROP/REMNT LOW 36H 05/0600Z 24.1N 116.6W 20 KT 25 MPH...POST-TROP/REMNT LOW 48H 05/1800Z 24.7N 118.1W 20 KT 25 MPH...POST-TROP/REMNT LOW 60H 06/0600Z...DISSIPATED $$ Forecaster Cangialosi
Category: Transportation and Logistics
Summary for Post-Tropical Cyclone Flossie (EP1/EP062025)
2025-07-03 22:29:59| National Hurricane Center (East Pacific)
...FLOSSIE NOW A POST-TROPICAL CYCLONE... ...THIS IS THE LAST NHC ADVISORY... As of 2:00 PM MST Thu Jul 03 the center of Flossie was located near 21.2, -112.4 with movement NW at 10 mph. The minimum central pressure was 1003 mb with maximum sustained winds of about 40 mph.
Category: Transportation and Logistics
Post-Tropical Cyclone Flossie Public Advisory Number 19
2025-07-03 22:29:59| National Hurricane Center (East Pacific)
Issued at 200 PM MST Thu Jul 03 2025 000 WTPZ31 KNHC 032029 TCPEP1 BULLETIN Post-Tropical Cyclone Flossie Advisory Number 19 NWS National Hurricane Center Miami FL EP062025 200 PM MST Thu Jul 03 2025 ...FLOSSIE NOW A POST-TROPICAL CYCLONE... ...THIS IS THE LAST NHC ADVISORY... SUMMARY OF 200 PM MST...2100 UTC...INFORMATION ---------------------------------------------- LOCATION...21.2N 112.4W ABOUT 200 MI...320 KM SW OF CABO SAN LUCAS MEXICO MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...NW OR 305 DEGREES AT 10 MPH...17 KM/H MINIMUM CENTRAL PRESSURE...1003 MB...29.62 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 200 PM MST (2100 UTC), the center of Post-Tropical Cyclone Flossie was located near latitude 21.2 North, longitude 112.4 West. The post-tropical cyclone is moving toward the northwest near 10 mph (17 km/h). A general west-northwestward to northwestward motion is expected during the next couple of days. Maximum sustained winds have decreased to near 40 mph (65 km/h) with higher gusts. Continued steady weakening is expected, and the post-tropical low is forecast to dissipate this weekend. Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center. The estimated minimum central pressure is 1003 mb (29.62 inches). HAZARDS AFFECTING LAND ---------------------- SURF: Swells generated by Flossie will continue to affect portions of the coast of southwestern Mexico and the Baja California peninsula for another day or so. These swells are likely to 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. For additional information on the post-tropical low please see High Seas Forecasts issued by the National Weather Service, under AWIPS header NFDHSFEPI, WMO header FZPN02 KWBC, and on the web at ocean.weather.gov/shtml/NFDHSFEPI.php $$ Forecaster Cangialosi
Category: Transportation and Logistics
Post-Tropical Cyclone Flossie Forecast Advisory Number 19
2025-07-03 22:29:59| National Hurricane Center (East Pacific)
Issued at 2100 UTC THU JUL 03 2025 000 WTPZ21 KNHC 032029 TCMEP1 POST-TROPICAL CYCLONE FLOSSIE FORECAST/ADVISORY NUMBER 19 NWS NATIONAL HURRICANE CENTER MIAMI FL EP062025 2100 UTC THU JUL 03 2025 POST-TROPICAL CYCLONE CENTER LOCATED NEAR 21.2N 112.4W AT 03/2100Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE NORTHWEST OR 305 DEGREES AT 9 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1003 MB MAX SUSTAINED WINDS 35 KT WITH GUSTS TO 45 KT. 34 KT....... 0NE 0SE 0SW 40NW. 4 M SEAS.... 60NE 30SE 0SW 60NW. 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 21.2N 112.4W AT 03/2100Z AT 03/1800Z CENTER WAS LOCATED NEAR 20.9N 112.0W FORECAST VALID 04/0600Z 22.1N 113.5W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 04/1800Z 23.2N 115.1W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 05/0600Z 24.1N 116.6W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 05/1800Z 24.7N 118.1W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 06/0600Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 21.2N 112.4W THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE NATIONAL HURRICANE CENTER ON FLOSSIE. FOR ADDITIONAL INFORMATION ON THE REMNANT LOW PLEASE SEE HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER SERVICE...UNDER AWIPS HEADER NFDHSFEPI AND WMO HEADER FZPN02 KWBC. $$ FORECASTER CANGIALOSI
Category: Transportation and Logistics
Post-Tropical Cyclone Flossie Wind Speed Probabilities Number 19
2025-07-03 22:29:59| National Hurricane Center (East Pacific)
Issued at 2100 UTC THU JUL 03 2025 000 FOPZ11 KNHC 032029 PWSEP1 POST-TROPICAL CYCLONE FLOSSIE WIND SPEED PROBABILITIES NUMBER 19 NWS NATIONAL HURRICANE CENTER MIAMI FL EP062025 2100 UTC THU JUL 03 2025 AT 2100Z THE CENTER OF POST-TROPICAL CYCLONE FLOSSIE WAS LOCATED NEAR LATITUDE 21.2 NORTH...LONGITUDE 112.4 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 35 KTS...40 MPH...65 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) PACIFIC DAYLIGHT TIME (PDT)...SUBTRACT 7 HOURS FROM Z TIME HAWAIIAN STANDARD TIME (HST)...SUBTRACT 10 HOURS FROM Z TIME WIND SPEED PROBABILITY TABLE FOR SPECIFIC LOCATIONS CHANCES OF SUSTAINED (1-MINUTE AVERAGE) WIND SPEEDS OF AT LEAST ...34 KT (39 MPH... 63 KM/H)... ...50 KT (58 MPH... 93 KM/H)... ...64 KT (74 MPH...119 KM/H)... FOR LOCATIONS AND TIME PERIODS DURING THE NEXT 5 DAYS PROBABILITIES FOR LOCATIONS ARE GIVEN AS OP(CP) WHERE OP IS THE PROBABILITY OF THE EVENT BEGINNING DURING AN INDIVIDUAL TIME PERIOD (ONSET PROBABILITY) (CP) IS THE PROBABILITY OF THE EVENT OCCURRING BETWEEN 18Z THU AND THE FORECAST HOUR (CUMULATIVE PROBABILITY) PROBABILITIES ARE GIVEN IN PERCENT X INDICATES PROBABILITIES LESS THAN 1 PERCENT PROBABILITIES FOR 34 KT AND 50 KT ARE SHOWN AT A GIVEN LOCATION WHEN THE 5-DAY CUMULATIVE PROBABILITY IS AT LEAST 3 PERCENT. PROBABILITIES FOR 34...50...64 KT SHOWN WHEN THE 5-DAY 64-KT CUMULATIVE PROBABILITY IS AT LEAST 1 PERCENT. - - - - WIND SPEED PROBABILITIES FOR SELECTED LOCATIONS - - - - FROM FROM FROM FROM FROM FROM FROM TIME 18Z THU 06Z FRI 18Z FRI 06Z SAT 18Z SAT 18Z SUN 18Z MON PERIODS TO TO TO TO TO TO TO 06Z FRI 18Z FRI 06Z SAT 18Z SAT 18Z SUN 18Z MON 18Z TUE FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT $$ FORECASTER CANGIALOSI
Category: Transportation and Logistics
Atlantic Tropical Weather Outlook
2025-07-03 19:37:05| National Hurricane Center (Atlantic)
000ABNT20 KNHC 031732TWOAT Tropical Weather OutlookNWS National Hurricane Center Miami FL200 PM EDT Thu Jul 3 2025For the North Atlantic...Caribbean Sea and the Gulf of America:Near the Southeastern U.S.:An area of low pressure is forecast to develop along a weakening frontal boundary near Florida or the Atlantic coast of the southeastern United States on Friday or Saturday. Environmental conditions appear only marginally conducive for some slow development, but a tropical or subtropical depression could form in this region over the weekend or early next week while the system drifts northward or northeastward. Regardless of development, heavy rainfall is possible across portions of the southeast U.S., particularly across the west-central Florida coast. An Air Force Reserve Hurricane Hunter aircraft is scheduled to investigate the system on Friday, if necessary.* Formation chance through 48 hours...low...30 percent. * Formation chance through 7 days...medium...60 percent.$$Forecaster Beven
Category: Transportation and Logistics
Eastern North Pacific Tropical Weather Outlook
2025-07-03 19:13:27| National Hurricane Center (East Pacific)
000ABPZ20 KNHC 031713TWOEP Tropical Weather OutlookNWS National Hurricane Center Miami FL1100 AM PDT Thu Jul 3 2025For the eastern and central North Pacific east of 180 longitude:Active Systems:The National Hurricane Center is issuing advisories on Tropical Storm Flossie, located in the eastern Pacific basin, a couple of hundred miles south-southwest of the southern tip of the Baja California peninsula. South of Southern Mexico:A large area of disorganized showers and thunderstorms, partly associated with a tropical wave, is centered a few hundred miles south of southern Mexico. Gradual development of this system is expected during the next few days, and a tropical depression is likely to form over the weekend or early next week while it moves generally west-northwestward well off the coast of Mexico.* Formation chance through 48 hours...medium...40 percent.* Formation chance through 7 days...high...80 percent. $$Forecaster Cangialosi
Category: Transportation and Logistics
Tropical Storm Flossie Graphics
2025-07-03 17:22:15| National Hurricane Center (East Pacific)
5-Day Uncertainty Track last updated Thu, 03 Jul 2025 14:36:15 GMT Wind Speed Probabilities last updated Thu, 03 Jul 2025 15:22:15 GMT
Category: Transportation and Logistics
Tropical Storm Flossie Graphics
2025-07-03 16:36:28| National Hurricane Center (East Pacific)
5-Day Uncertainty Track last updated Thu, 03 Jul 2025 14:36:15 GMT Wind Speed Probabilities last updated Thu, 03 Jul 2025 14:36:15 GMT
Category: Transportation and Logistics
Tropical Storm Flossie Forecast Discussion Number 18
2025-07-03 16:34:25| National Hurricane Center (East Pacific)
Issued at 800 AM MST Thu Jul 03 2025 557 WTPZ41 KNHC 031434 TCDEP1 Tropical Storm Flossie Discussion Number 18 NWS National Hurricane Center Miami FL EP062025 800 AM MST Thu Jul 03 2025 Flossie is now a swirl of low- to mid-level clouds with no associated convection as it moves over colder sea surface temperatures to the southwest of Baja California Sur. The initial intensity is decreased to a somewhat uncertain 40 kt in agreement with the latest subjective and objective satellite intensity estimates. Flossie should continue to steadily weaken, with the cyclone expected to become a post-tropical low later today and a remnant low tonight. The system should dissipate completely by 60 h. The initial motion is 300/9. A generally northwestward to west-northwestward should continue to the next 36 h or so, followed by a gradual bend more toward the west-northwest. The new track forecast is close to the previous forecast and the consensus models. FORECAST POSITIONS AND MAX WINDS INIT 03/1500Z 20.6N 111.7W 40 KT 45 MPH 12H 04/0000Z 21.4N 112.9W 35 KT 40 MPH...POST-TROPICAL 24H 04/1200Z 22.6N 114.5W 25 KT 30 MPH...POST-TROP/REMNT LOW 36H 05/0000Z 23.6N 116.2W 20 KT 25 MPH...POST-TROP/REMNT LOW 48H 05/1200Z 24.3N 117.7W 20 KT 25 MPH...POST-TROP/REMNT LOW 60H 06/0000Z...DISSIPATED $$ Forecaster Beven
Category: Transportation and Logistics
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