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Tropical Storm Gamma Public Advisory Number 5

2020-10-03 16:55:59| National Hurricane Center (Atlantic)

Issued at 1000 AM CDT Sat Oct 03 2020 000 WTNT35 KNHC 031455 TCPAT5 BULLETIN Tropical Storm Gamma Advisory Number 5 NWS National Hurricane Center Miami FL AL252020 1000 AM CDT Sat Oct 03 2020 ...GAMMA CLOSE TO HURRICANE STRENGTH AS IT NEARS THE EAST COAST OF THE YUCATAN PENINSULA... SUMMARY OF 1000 AM CDT...1500 UTC...INFORMATION ----------------------------------------------- LOCATION...20.0N 87.3W ABOUT 20 MI...30 KM SE OF TULUM MEXICO MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...983 MB...29.03 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The government of Mexico has issued a Hurricane Warning for the east coast of the Yucatan Peninsula from north of Punta Allen to Cancun, including Cozumel. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for * North of Punta Allen to Cancun Mexico, including Cozumel A Tropical Storm Warning is in effect for... * Punta Herrero to Punta Allen Mexico * North and west of Cancun to Dzilam Mexico A Tropical Storm Watch is in effect for... * South of Punta Herrero to Puerto Costa Maya Mexico * West of Dzilam to Progreso Mexico A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area, in this case within the next 6 hours. Preparations to protect life and property should be rushed to completion. 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 1000 AM CDT (1500 UTC), the center of Tropical Storm Gamma was located near latitude 20.0 North, longitude 87.3 West. Gamma is moving toward the northwest near 9 mph (15 km/h), and this motion should continue at a slower forward speed today. A turn toward the north-northwest is expected on Sunday, followed by a turn to the west or west-southwest Sunday night or Monday. On the forecast track, the center of Gamma should move inland over the eastern Yucatan Peninsula later today, and be near the north coast of the Yucatan Peninsula on Sunday. Maximum sustained winds have increased to near 70 mph (110 km/h) with higher gusts. Gamma is likely to be near or at hurricane strength when it makes landfall in the eastern Yucatan Peninsula. Some weakening is expected after landfall. Tropical-storm-force winds extend outward up to 80 miles (130 km) from the center. A station at Cancun, Mexico, reported a sustained wind of 46 mph (74 km/h) and a gust to 55 mph (89 km/h) within the past few hours. A station at Xcaret Park near Playa del Carmen recently reported a sustained wind of 39 mph (63 km/h) and a gust to 54 mph (87 km/h). The minimum central pressure estimated from Hurricane Hunter observations is 983 mb (29.03 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: Gamma is expected to produce rainfall of 4 to 8 inches across portions of the Yucatan Peninsula and far western Cuba, with maximum rainfall amounts as high as 10 to 15 inches possible across northeastern Quintana Roo and northern Yucatan. This rainfall may produce life-threatening flash floods. A separate area of significant rain is expected to develop well away from the center in the Mexican states of Campeche, Tabasco, northern Chiapas, and southeast Veracruz, with rainfall of 6 to 8 inches and isolated maximum amounts of 12 inches. This rainfall may produce life-threatening flash floods and mudslides. The storm will also result in an area of heavy rains to the south that will affect the Gulf of Fonseca region between eastern El Salvador, southern Honduras, and northwest Nicaragua with accumulation of 4-6 inches and isolated maximum amounts of 8 inches. Additional rainfall of 1 to 3 inches with maximum amounts of 5 inches is expected over the Cayman Islands. WIND: Hurricane conditions are expected within the Hurricane Warning area during the next few hours. Tropical storm conditions are spreading into the Tropical Storm Warning area on the east coast of the Yucatan Peninsula, and these conditions should spread across the remainder of the warning area through Sunday. Tropical Storm conditions are possible within the Tropical Storm Watch area later today and on Sunday. STORM SURGE: A dangerous storm surge will raise water levels by as much as 1 to 3 feet above normal tide levels along the immediate coast near and to the north of where the center makes landfall. Near the coast, the surge will be accompanied by large and destructive waves. NEXT ADVISORY ------------- Next intermediate advisory at 100 PM CDT. Next complete advisory at 400 PM CDT. $$ Forecaster Pasch/Berg

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Hurricane Marie Public Advisory Number 18

2020-10-03 16:35:54| National Hurricane Center (East Pacific)

Issued at 800 AM PDT Sat Oct 03 2020 289 WTPZ33 KNHC 031435 TCPEP3 BULLETIN Hurricane Marie Advisory Number 18 NWS National Hurricane Center Miami FL EP182020 800 AM PDT Sat Oct 03 2020 ...POWERFUL MARIE EXPECTED TO BEGIN WEAKENING LATER TODAY... SUMMARY OF 800 AM PDT...1500 UTC...INFORMATION ---------------------------------------------- LOCATION...18.4N 126.9W ABOUT 1140 MI...1835 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H PRESENT MOVEMENT...NW OR 310 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...948 MB...28.00 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 800 AM PDT (1500 UTC), the center of Hurricane Marie was located near latitude 18.4 North, longitude 126.9 West. Marie is moving toward the northwest near 9 mph (15 km/h), and this general motion with little change in speed is expected to continue through early next week. Maximum sustained winds are near 130 mph (215 km/h) with higher gusts. Marie is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. The hurricane is expected to begin weakening later today, and a more rapid weakening trend is forecast into early next week. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 150 miles (240 km). The estimated minimum central pressure is 948 mb (28.00 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 200 PM PDT. $$ Forecaster Reinhart/Berg

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Tropical Storm Gamma Public Advisory Number 4A

2020-10-03 13:44:56| National Hurricane Center (Atlantic)

Issued at 700 AM CDT Sat Oct 03 2020 000 WTNT35 KNHC 031144 TCPAT5 BULLETIN Tropical Storm Gamma Intermediate Advisory Number 4A NWS National Hurricane Center Miami FL AL252020 700 AM CDT Sat Oct 03 2020 ...GAMMA STRENGTHENS SOME MORE AS IT APPROACHES THE EAST COAST OF THE YUCATAN PENINSULA... SUMMARY OF 700 AM CDT...1200 UTC...INFORMATION ---------------------------------------------- LOCATION...19.7N 87.2W ABOUT 40 MI...65 KM SSE OF TULUM MEXICO MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H PRESENT MOVEMENT...NW OR 305 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...987 MB...29.15 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Punta Herrero to Dzilam Mexico A Tropical Storm Watch is in effect for... * South of Punta Herrero to Puerto Costa Maya Mexico * West of Dzilam to Progreso Mexico 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 700 AM CDT (1200 UTC), the center of Tropical Storm Gamma was located near latitude 19.7 North, longitude 87.2 West. Gamma is moving toward the northwest near 9 mph (15 km/h), and this motion should continue at a slower forward speed today. A turn toward the north is expected on Sunday, followed by a turn to the west or west-southwest Sunday night or Monday. On the forecast track, the center of Gamma should move inland over the eastern Yucatan Peninsula later today, and be near the north coast of the Yucatan Peninsula on Sunday. Reports from an Air Force Reserve Hurricane Hunter aircraft indicate that maximum sustained winds have increased to near 65 mph (100 km/h) with higher gusts. Some slight additional strengthening is possible before Gamma makes landfall on the Yucatan Peninsula today. After landfall, some weakening is expected. Tropical-storm-force winds extend outward up to 80 miles (130 km) from the center. The minimum central pressure estimated from Hurricane Hunter observations is 987 mb (29.15 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: Gamma is expected to produce rainfall of 4 to 8 inches across portions of the Yucatan Peninsula and far western Cuba, with maximum rainfall amounts as high as 10 to 15 inches possible across the northeastern portion of the Mexican state of Quintana Roo. This rainfall may produce life-threatening flash floods. A separate area of significant rain is expected to develop well away from the center in the Mexican states of Campeche, Tabasco, and northern Chiapas with rainfall of 8 to 12 inches and isolated maximum amounts of 20 inches. This rainfall may produce life-threatening flash floods and mudslides. Rainfall of 1 to 3 inches with maximum amounts of 5 inches is expected in the Bay Islands of Honduras and over the Cayman Islands. WIND: Tropical storm conditions are spreading into the Tropical Storm Warning area on the east coast of the Yucatan Peninsula, and these conditions should spread across the remainder of the warning area through Sunday. Tropical Storm conditions are possible within the Tropical Storm Watch area later today and on Sunday. NEXT ADVISORY ------------- Next complete advisory at 1000 AM CDT. $$ Forecaster Pasch

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Tropical Storm Gamma Public Advisory Number 4

2020-10-03 11:00:52| National Hurricane Center (Atlantic)

Issued at 400 AM CDT Sat Oct 03 2020 847 WTNT35 KNHC 030900 TCPAT5 BULLETIN Tropical Storm Gamma Advisory Number 4 NWS National Hurricane Center Miami FL AL252020 400 AM CDT Sat Oct 03 2020 ...GAMMA CONTINUES TO STRENGTHEN AS IT MOVES TOWARD THE YUCATAN PENINSULA... ...HEAVY RAINFALL EXPECTED TO BE THE MAIN THREAT... SUMMARY OF 400 AM CDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...19.4N 86.9W ABOUT 75 MI...120 KM S OF COZUMEL MEXICO MAXIMUM SUSTAINED WINDS...50 MPH...85 KM/H PRESENT MOVEMENT...NW OR 305 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...992 MB...29.29 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Government of Mexico has issued a Tropical Storm Warning for the north coast of the Yucatan Peninsula from Cabo Catoche to Dzilam, and a Tropical Storm Watch for the north coast of the Yucatan Peninsula west of Dzilam to Progreso. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * Punta Herrero to Dzilam Mexico A Tropical Storm Watch is in effect for... * South of Punta Herrero to Puerto Costa Maya Mexico * West of Dzilam to Progreso Mexico 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 400 AM CDT (0900 UTC), the center of Tropical Storm Gamma was located near latitude 19.4 North, longitude 86.9 West. Gamma is moving toward the northwest near 9 mph (15 km/h), and this motion should continue at a slower forward speed today. A turn toward the north is expected on Sunday, followed by a turn to the west or west-southwest Sunday night or Monday. On the forecast track, the center of Gamma should move inland over the northeastern Yucatan Peninsula later today, and be near the north coast of the Yucatan Peninsula on Sunday. Reports from an Air Force Reserve Hurricane Hunter aircraft indicate that maximum sustained winds have increased to near 50 mph (85 km/h) with higher gusts. Additional strengthening is expected before Gamma makes landfall on the Yucatan Peninsula. After landfall, a slight weakening is expected. Tropical-storm-force winds extend outward up to 80 miles (130 km) from the center. The minimum central pressure extrapolated by the Hurricane Hunter aircraft is 992 mb (29.29 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: Gamma is expected to produce rainfall of 4 to 8 inches across portions of the Yucatan Peninsula and far western Cuba, with maximum rainfall amounts as high as 10 to 15 inches possible across the northeastern portion of the Mexican state of Quintana Roo. This rainfall may produce life-threatening flash floods. A separate area of significant rain is expected to develop well away from the center in the Mexican states of Campeche, Tabasco, and northern Chiapas with rainfall of 8 to 12 inches and isolated maximum amounts of 20 inches. This rainfall may produce life-threatening flash floods and mudslides. Rainfall of 1 to 3 inches with maximum amounts of 5 inches is expected in the Bay Islands of Honduras and over the Cayman Islands. WIND: Tropical storm conditions are spreading into the Tropical Storm Warning area on the east coast of the Yucatan Peninsula, and these conditions should spread across the remainder of the warning area through Sunday. Tropical Storm conditions are possible within the Tropical Storm Watch area later today and on Sunday. NEXT ADVISORY ------------- Next intermediate advisory at 700 AM CDT. Next complete advisory at 1000 AM CDT. $$ Forecaster Beven

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Hurricane Marie Public Advisory Number 17

2020-10-03 10:37:51| National Hurricane Center (East Pacific)

Issued at 200 AM PDT Sat Oct 03 2020 000 WTPZ33 KNHC 030837 TCPEP3 BULLETIN Hurricane Marie Advisory Number 17 NWS National Hurricane Center Miami FL EP182020 200 AM PDT Sat Oct 03 2020 ...POWERFUL MARIE CONTINUES CHURNING NORTHWESTWARD... SUMMARY OF 200 AM PDT...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...17.9N 126.4W ABOUT 1120 MI...1805 KM WSW OF THE SOUTHERN TIP OF BAJA CALIFORNIA MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H PRESENT MOVEMENT...NW OR 315 DEGREES AT 9 MPH...15 KM/H MINIMUM CENTRAL PRESSURE...948 MB...28.00 INCHES WATCHES AND WARNINGS -------------------- There are no coastal watches or warnings in effect. DISCUSSION AND OUTLOOK ---------------------- At 200 AM PDT (0900 UTC), the center of Hurricane Marie was located near latitude 17.9 North, longitude 126.4 West. Marie is moving toward the northwest near 9 mph (15 km/h), and this motion is expected to continue through the weekend. A turn to the west-northwest is expected by Monday. Maximum sustained winds are near 130 mph (215 km/h) with higher gusts. Marie is a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. The hurricane is forecast to begin weakening later today, and this weakening trend should continue into early next week. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 150 miles (240 km). The estimated minimum central pressure is 948 mb (28.00 inches). HAZARDS AFFECTING LAND ---------------------- None. NEXT ADVISORY ------------- Next complete advisory at 800 AM PDT. $$ Forecaster Latto

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