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Tropical Storm Marie Public Advisory Number 26
2020-10-05 16:50:01| National Hurricane Center (East Pacific)
Issued at 500 AM HST Mon Oct 05 2020 000 WTPZ33 KNHC 051449 TCPEP3 BULLETIN Tropical Storm Marie Advisory Number 26 NWS National Hurricane Center Miami FL EP182020 500 AM HST Mon Oct 05 2020 ...MARIE CONTINUES TO SPIN DOWN AND SHOULD BECOME A REMNANT LOW BY TUESDAY NIGHT... SUMMARY OF 500 AM HST...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...21.1N 131.9W ABOUT 1415 MI...2275 KM W OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...60 MPH...95 KM/H PRESENT MOVEMENT...WNW OR 300 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...996 MB...29.42 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 500 AM HST (1500 UTC), the center of Tropical Storm Marie was located near latitude 21.1 North, longitude 131.9 West. Marie is moving toward the west-northwest near 9 mph (15 km/h), and this general motion with a decrease in forward speed is anticipated during the next couple of days, followed by a turn to the west. Maximum sustained winds are near 60 mph (95 km/h) with higher gusts. Continued weakening is expected, and Marie is forecast to degenerate into a remnant low by Tuesday night. Tropical-storm-force winds extend outward up to 125 miles (205 km) from the center. The estimated minimum central pressure is 996 mb (29.42 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 1100 AM HST. $$ Forecaster Latto
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Tropical Storm Marie Forecast Advisory Number 26
2020-10-05 16:50:01| National Hurricane Center (East Pacific)
Issued at 1500 UTC MON OCT 05 2020 000 WTPZ23 KNHC 051449 TCMEP3 TROPICAL STORM MARIE FORECAST/ADVISORY NUMBER 26 NWS NATIONAL HURRICANE CENTER MIAMI FL EP182020 1500 UTC MON OCT 05 2020 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL STORM CENTER LOCATED NEAR 21.1N 131.9W AT 05/1500Z POSITION ACCURATE WITHIN 30 NM PRESENT MOVEMENT TOWARD THE WEST-NORTHWEST OR 300 DEGREES AT 8 KT ESTIMATED MINIMUM CENTRAL PRESSURE 996 MB MAX SUSTAINED WINDS 50 KT WITH GUSTS TO 60 KT. 50 KT....... 40NE 30SE 0SW 60NW. 34 KT.......110NE 100SE 80SW 110NW. 12 FT SEAS..210NE 150SE 180SW 210NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 21.1N 131.9W AT 05/1500Z AT 05/1200Z CENTER WAS LOCATED NEAR 20.9N 131.5W FORECAST VALID 06/0000Z 21.5N 133.0W MAX WIND 40 KT...GUSTS 50 KT. 34 KT...110NE 70SE 70SW 110NW. FORECAST VALID 06/1200Z 22.1N 134.5W MAX WIND 35 KT...GUSTS 45 KT. 34 KT... 80NE 60SE 30SW 80NW. FORECAST VALID 07/0000Z 22.7N 136.0W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 07/1200Z 23.1N 137.1W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 08/0000Z 23.3N 138.0W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 08/1200Z 23.3N 138.8W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 100 NM ON DAY 4 AND 150 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY OUTLOOK VALID 09/1200Z 22.9N 140.2W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. OUTLOOK VALID 10/1200Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 21.1N 131.9W NEXT ADVISORY AT 05/2100Z $$ FORECASTER LATTO
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Tropical Storm Gamma Public Advisory Number 12A
2020-10-05 13:54:57| National Hurricane Center (Atlantic)
Issued at 700 AM CDT Mon Oct 05 2020 000 WTNT35 KNHC 051154 TCPAT5 BULLETIN Tropical Storm Gamma Intermediate Advisory Number 12A NWS National Hurricane Center Miami FL AL252020 700 AM CDT Mon Oct 05 2020 ...AIR FORCE RESERVE RECONNAISSANCE FINDS GAMMA WEAKER... ...FURTHER WEAKENING EXPECTED... SUMMARY OF 700 AM CDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...22.6N 87.5W ABOUT 165 MI...270 KM ENE OF PROGRESO MEXICO ABOUT 150 MI...240 KM NNW OF COZUMEL MEXICO MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H PRESENT MOVEMENT...SSW OR 205 DEGREES AT 2 MPH...4 KM/H MINIMUM CENTRAL PRESSURE...1001 MB...29.56 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * North and west of Cancun to Dzilam Mexico A Tropical Storm Watch is in effect for... * West of Dzilam to Campeche Mexico A Tropical Storm Warning means that tropical storm conditions are occurring somewhere within the warning area. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 700 AM CDT (1200 UTC), the center of Tropical Storm Gamma was located near latitude 22.6 North, longitude 87.5 West. Gamma is drifting toward the south-southwest near 2 mph (4 km/h). Gamma is forecast to gradually turn toward the southwest later today, and continue to move slowly in that direction through mid-week. On the forecast track, the center of Gamma will continue to meander offshore of the northern Yucatan Peninsula and pass near or just offshore of the northern coast of the Yucatan Peninsula this evening and on Tuesday. Gamma could possibly move inland along the northwest coast of the Yucatan Peninsula Tuesday night and Wednesday. Data from the reconnaissance aircraft indicate that maximum sustained winds have decreased to near 45 mph (75 km/h) with higher gusts. Gradual weakening is forecast during the next few days. Tropical-storm-force winds extend outward up to 160 miles (260 km), mainly northwest through northeast of the center. The estimated minimum central pressure based on measurements from the hurricane hunter plane is 1001 mb (29.56 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Tropical Storm Gamma can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT5, WMO header WTNT45 KNHC, and on the web at www.hurricanes.gov/text/MIATCDAT5.shtml. RAINFALL: Through midweek, Gamma is expected to produce an additional 3 to 6 inches of rainfall with isolated maximum amounts of 8 inches across portions of the Mexican states of Yucatan, Campeche, and Tabasco. This rainfall may produce significant flash flooding. WIND: Tropical storm conditions are likely in portions of the Tropical Storm Warning area along the northern coast of the Yucatan Peninsula later today. Tropical Storm conditions are possible within the Tropical Storm Watch area tonight and on Tuesday. NEXT ADVISORY ------------- Next complete advisory at 1000 AM CDT. $$ Forecaster Roberts
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Tropical Storm Delta Public Advisory Number 3A
2020-10-05 13:40:00| National Hurricane Center (Atlantic)
Issued at 800 AM EDT Mon Oct 05 2020 000 WTNT31 KNHC 051139 TCPAT1 BULLETIN Tropical Storm Delta Intermediate Advisory Number 3A NWS National Hurricane Center Miami FL AL262020 800 AM EDT Mon Oct 05 2020 ...TROPICAL DEPRESSION STRENGTHENS INTO A TROPICAL STORM... ...ADDITIONAL STRENGTHENING LIKELY OVER THE NEXT FEW DAYS... SUMMARY OF 800 AM EDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...16.4N 78.4W ABOUT 130 MI...210 KM S OF NEGRIL JAMAICA ABOUT 270 MI...440 KM SE OF GRAND CAYMAN MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...WNW OR 290 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Watch is in effect for... * Cuban provinces of Pinar del Rio and Artemisa * Isle of Youth A Tropical Storm Warning is in effect for... * Cayman Islands including Little Cayman and Cayman Brac A Tropical Storm Watch is in effect for... * Cuba province of La Habana A Hurricane Watch means that hurricane conditions are possible within the watch area, generally within 48 hours. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. A Tropical Storm Watch means that tropical storm conditions are possible within the watch area, generally within 48 hours. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 800 AM EDT (1200 UTC), the center of Tropical Storm Delta was located near latitude 16.4 North, longitude 78.4 West. The storm is moving toward the west-northwest near 9 mph (15 km/h), and this general motion should continue for the next day or so. A faster northwestward motion is expected on Tuesday and Wednesday. On the forecast track, the center of Delta is expected to move away from Jamaica later today, move near or over the Cayman Islands later tonight, and approach the Isle of Youth and western Cuba Tuesday afternoon or evening. Delta is forecast to move into the southeastern Gulf of Mexico Tuesday night or early Wednesday. Maximum sustained winds have increased to near 40 mph (65 km/h) with higher gusts. Additional strengthening is expected during the next few days, and the tropical storm is expected to be a hurricane when it moves near or over western Cuba. Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center. The estimated minimum central pressure is 1004 mb (29.65 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Tropical Storm Delta can be found in the Tropical Cyclone Discussion under AWIPS header MIATCDAT1, WMO header WTNT41 KNHC, and on the web at www.hurricanes.gov/text/MIATCDAT1.shtml. STORM SURGE: A dangerous storm surge will raise water levels by as much as 3 to 5 feet above normal tide levels along the immediate coast of the Isle of Youth and along the south coast of western Cuba near and to right of where the center makes landfall. Near the coast, the surge will be accompanied by large and dangerous waves. RAINFALL: Through midweek, Delta is expected to produce 3 to 5 inches of rain with isolated maximum totals of 8 inches across Jamaica and western Cuba. This rainfall could lead to significant flash floods and mudslides. Over the Cayman Islands, 2 to 4 inches of rainfall will be possible with this system. WIND: Tropical storm conditions are expected in the Cayman Islands beginning late today. Hurricane conditions are possible within the Hurricane Watch area by Tuesday afternoon, with tropical storm conditions possible by early Tuesday. Tropical Storm conditions are possible in the Tropical Storm Watch area in Cuba by early Tuesday. NEXT ADVISORY ------------- Next complete advisory at 1100 AM EDT. $$ Forecaster Brown
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Tropical Depression Twenty-six Forecast Discussion Number 3
2020-10-05 10:56:23| National Hurricane Center (Atlantic)
Issued at 500 AM EDT Mon Oct 05 2020 088 WTNT41 KNHC 050856 TCDAT1 Tropical Depression Twenty-Six Discussion Number 3 NWS National Hurricane Center Miami FL AL262020 500 AM EDT Mon Oct 05 2020 Deep convection has been steadily improving in both vertical depth and structure, with the cloud pattern becoming more circular with upper-level outflow now having become established in all quadrants. However, there are still some indications in satellite imagery that the low-level and the mid-/upper-level circulations are not yet vertically aligned, with the low-level center still located just inside the northern edge of the convective cloud shield. For now, the initial intensity remains at 30 kt based on Dvorak satellite classifications from TAFB and SAB and also UW-CIMSS ADT. However, SATCON estimates suggest that the cyclone is close to tropical storm status. The initial motion estimate is an uncertain 290/08 kt. Even after maintaining some continuity with the previous forecast, the initial position had to be adjusted a little farther to the south and west based on satellite animation, and the current position may have to be adjusted farther south on the next forecast cycle due to possible redevelopment of the center into the deep convective cloud mass. Otherwise, the previous forecast track reasoning remains essentially unchanged. The cyclone is expected to move west-northwestward to northwestward along the southern side of a deep-layer ridge for the next few days. By day 4 and beyond, a broad mid- to upper-level trough is forecast to develop across northern Mexico and Texas, which is expected to create a break in the ridge and turn the cyclone northward toward the north-central Gulf coast. The steering flow pattern becomes a little complex on days 2-3 due to expected binary interaction with Tropical Storm Gamma or its remnants, which could result in a sharp westward jog, after which a sharp turn back toward the northwest could occur. However, the latest NHC model guidance is in fairly good agreement that the cyclone will make a sharp northward turn between 90W-92W longitude around 96 hours or so. Thereafter, acceleration toward the north-northeast or northeast ahead of the approaching trough and frontal system is anticipated. The new NHC forecast track is a little to the left of the previous track through 72 hours, mainly to account for the more westward initial position, and lies down the middle of the tightly packed model guidance envelope. The northeasterly deep-layer vertical wind shear that has been plaguing the cyclone is finally showing signs of abating. The GFS- and ECMWF-based SHIPS model guidance shows the shear decreasing to near zero in the 24-48 hour period, which allow for some robust intensification to occur, assuming that the inner-core wind field becomes better defined later today. By 96 hours and beyond, the SHIPS models are forecasting the shear to increase 20-30 kt from the southwest, which would be expected to induce rapid weakening. However, the SHIPS models appear to be creating too much shear over the cyclone's center by incorporating jetstream winds of about 60 kt across Texas, whereas the 200-mb model fields only show winds of 10-15 kt over the center by 96 hours. As a result, the new intensity forecast calls for the cyclone to reach its peak intensity in the 72-96 hour period, followed by weakening due to likely cold upwelling of shallow cool shelf waters offshore the southwest coast of Louisiana and Mississippi. The new NHC intensity forecast is similar to the previous advisory, and lies near the upper end of the intensity guidance, similar to the corrected-consensus model HCCA. Users are reminded that the average 4- and 5-day NHC track forecast errors are about 160 to 200 miles at those time periods, respectively. Key Messages: 1. Tropical storm conditions are expected in the Cayman Islands beginning late today, and a Tropical Storm Warning is in effect. 2. Dangerous storm surge and hurricane conditions are possible in portions of western Cuba and the Isle of Youth by Tuesday afternoon, and a Hurricane Watch is in effect. 3. Heavy rainfall will affect portions of Jamaica, the Cayman Islands, and western Cuba during the next few days. This rainfall could lead to significant flash flooding and mudslides. 4. The system is forecast to approach the northern Gulf Coast late this week as a hurricane. While there is large uncertainty in the track and intensity forecasts at these time ranges, there is a risk of dangerous storm surge, wind, and rainfall hazards along the coast from Louisiana to the western Florida Panhandle. Residents in these areas should monitor the progress of the system and check for updates to the forecast during the week. FORECAST POSITIONS AND MAX WINDS INIT 05/0900Z 17.0N 78.2W 30 KT 35 MPH 12H 05/1800Z 17.4N 79.1W 35 KT 40 MPH 24H 06/0600Z 18.6N 80.8W 45 KT 50 MPH 36H 06/1800Z 20.5N 83.3W 60 KT 70 MPH 48H 07/0600Z 22.5N 85.8W 70 KT 80 MPH 60H 07/1800Z 24.4N 88.1W 80 KT 90 MPH 72H 08/0600Z 25.9N 90.0W 90 KT 105 MPH 96H 09/0600Z 28.0N 91.0W 85 KT 100 MPH 120H 10/0600Z 32.4N 88.7W 55 KT 65 MPH...INLAND $$ Forecaster Stewart
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