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Tropical Depression Theta Wind Speed Probabilities Number 22
2020-11-15 09:35:45| National Hurricane Center (Atlantic)
Issued at 0900 UTC SUN NOV 15 2020 000 FONT15 KNHC 150835 PWSAT5 TROPICAL DEPRESSION THETA WIND SPEED PROBABILITIES NUMBER 22 NWS NATIONAL HURRICANE CENTER MIAMI FL AL302020 0900 UTC SUN NOV 15 2020 AT 0900Z THE CENTER OF TROPICAL DEPRESSION THETA WAS LOCATED NEAR LATITUDE 31.8 NORTH...LONGITUDE 18.3 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 30 KTS...35 MPH...55 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) ATLANTIC STANDARD TIME (AST)...SUBTRACT 4 HOURS FROM Z TIME EASTERN STANDARD TIME (EST)...SUBTRACT 5 HOURS FROM Z TIME CENTRAL STANDARD TIME (CST)...SUBTRACT 6 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 06Z SUN 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 06Z SUN 18Z SUN 06Z MON 18Z MON 06Z TUE 06Z WED 06Z THU PERIODS TO TO TO TO TO TO TO 18Z SUN 06Z MON 18Z MON 06Z TUE 06Z WED 06Z THU 06Z FRI FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT $$ FORECASTER ZELINSKY
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Tropical Depression Theta Forecast Advisory Number 22
2020-11-15 09:35:14| National Hurricane Center (Atlantic)
Issued at 0900 UTC SUN NOV 15 2020 000 WTNT25 KNHC 150835 TCMAT5 TROPICAL DEPRESSION THETA FORECAST/ADVISORY NUMBER 22 NWS NATIONAL HURRICANE CENTER MIAMI FL AL302020 0900 UTC SUN NOV 15 2020 THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 31.8N 18.3W AT 15/0900Z POSITION ACCURATE WITHIN 45 NM PRESENT MOVEMENT TOWARD THE EAST OR 90 DEGREES AT 3 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1003 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 40 KT. 12 FT SEAS..120NE 120SE 120SW 90NW. WINDS AND SEAS VARY GREATLY IN EACH QUADRANT. RADII IN NAUTICAL MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT. REPEAT...CENTER LOCATED NEAR 31.8N 18.3W AT 15/0900Z AT 15/0600Z CENTER WAS LOCATED NEAR 31.7N 18.4W FORECAST VALID 15/1800Z 31.9N 17.8W...POST-TROP/REMNT LOW MAX WIND 30 KT...GUSTS 40 KT. FORECAST VALID 16/0600Z 33.1N 17.5W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 16/1800Z 35.5N 16.9W...POST-TROP/REMNT LOW MAX WIND 25 KT...GUSTS 35 KT. FORECAST VALID 17/0600Z 39.0N 14.8W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 17/1800Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 31.8N 18.3W NEXT ADVISORY AT 15/1500Z $$ FORECASTER ZELINSKY
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Hurricane Iota Public Advisory Number 7A
2020-11-15 06:55:13| National Hurricane Center (Atlantic)
Issued at 100 AM EST Sun Nov 15 2020 000 WTNT31 KNHC 150555 TCPAT1 BULLETIN Hurricane Iota Intermediate Advisory Number 7A NWS National Hurricane Center Miami FL AL312020 100 AM EST Sun Nov 15 2020 ...RECONNAISSANCE AIRCRAFT FINDS IOTA HAS STRENGTHENED INTO THE THIRTEENTH HURRICANE OF THE 2020 ATLANTIC HURRICANE SEASON... ...IOTA EXPECTED TO RAPIDLY STRENGTHEN INTO A MAJOR HURRICANE AS APPROACHES CENTRAL AMERICA.... SUMMARY OF 100 AM EST...0600 UTC...INFORMATION ---------------------------------------------- LOCATION...13.0N 77.0W ABOUT 295 MI...475 KM E OF ISLA DE PROVIDENCIA COLOMBIA ABOUT 440 MI...705 KM ESE OF CABO GRACIAS A DIOS ON NIC/HON BORDER MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 5 MPH...7 KM/H MINIMUM CENTRAL PRESSURE...989 MB...29.20 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Hurricane Warning is in effect for... * Providencia * The coast of Nicaragua from the Honduras/Nicaragua border to Sandy Bay Sirpi * The coast of northeastern Honduras from Punta Patuca to the Honduras/Nicaragua border A Hurricane Watch is in effect for... * San Andres A Tropical Storm Warning is in effect for... * San Andres * The coast of Nicaragua from south of Sandy Bay Sirpi to Bluefields * The northern coast of Honduras from west of Punta Patuca to Punta Castilla A Hurricane Warning means that hurricane conditions are expected somewhere within the warning area. A warning is typically issued 36 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. Preparations to protect life and property should be rushed to completion. A Hurricane Watch means that hurricane conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds, conditions that make outside preparations difficult or dangerous. A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours. Interests elsewhere in Nicaragua and Honduras should monitor the progress of Iota. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 100 AM EST (0600 UTC), the center of Hurricane Iota was located by an Air Force Reserve reconnaissance aircraft near latitude 13.0 North, longitude 77.0 West. Iota is moving toward the west near 5 mph (7 km/h). A general westward motion is expected during the next few days. On the forecast track, Iota will move across the southwest Caribbean Sea today, pass near or over Providencia island on Monday, and approach the coasts of Nicaragua and northeastern Honduras Monday evening. Reports from the aircraft indicate that maximum sustained winds have increased to near 75 mph (120 km/h) with higher gusts. Rapid strengthening is expected during the next day or two, and Iota is forecast to be a major hurricane when it approaches Central America. Tropical-storm-force winds extend outward up to 105 miles (165 km) from the center. The latest data from the reconnaissance aircraft indicate that the minimum central pressure is 989 mb (29.20 inches). HAZARDS AFFECTING LAND ---------------------- RAINFALL: Iota is expected to produce the following rainfall accumulations through Thursday: Honduras, northern Nicaragua, eastern Guatemala, southern Belize: 8 to 16 inches (200 to 400 mm). Isolated maximum totals of 20-30 inches (500 to 750 mm) will be possible, especially from northeast Nicaragua into northern Honduras. Costa Rica, Panama, and northern Colombia: 4 to 8 inches (100 to 200 mm), with isolated maximum totals of 12 inches (300 mm). This rainfall would lead to significant, life-threatening flash flooding and river flooding, along with mudslides in areas of higher terrain. El Salvador, southern Nicaragua and southern Honduras: 2 to 4 inches (50 to 100 mm), with isolated maximum totals of 6 inches (150 mm). Jamaica: 1 to 3 inches (25 to 75 mm). WIND: Hurricane conditions are expected on the island of Providencia by late Sunday night with tropical storm conditions expected beginning Sunday evening. Hurricane conditions are expected within the Hurricane Warning area in Nicaragua and Honduras by late Monday. Tropical storm conditions are expected to begin on the island of San Andres late Sunday or Sunday night with hurricane conditions possible there Sunday night or early Monday. Tropical storm conditions are expected in the Tropical Storm Warning area in Nicaragua by late Monday and in the warning area in Honduras by Monday night. STORM SURGE: A dangerous storm surge will raise water levels by as much as 9 to 13 feet above normal tide levels in areas of onshore winds along the coast of Nicaragua and Honduras. Near the coast, the surge will be accompanied by large and destructive waves. SURF: Swells generated by Iota will affect portions of the coast of Colombia, and the southern coasts of Hispaniola and Jamaica during the next day or two. Swells will begin to reach the coasts of Nicaragua and Honduras on Monday. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office. NEXT ADVISORY ------------- Next complete advisory at 400 AM EST. $$ Forecaster Stewart
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Tropical Storm Theta Forecast Discussion Number 21
2020-11-15 03:36:44| National Hurricane Center (Atlantic)
Issued at 300 AM GMT Sun Nov 15 2020 000 WTNT45 KNHC 150236 TCDAT5 Tropical Storm Theta Discussion Number 21 NWS National Hurricane Center Miami FL AL302020 300 AM GMT Sun Nov 15 2020 Theta remains a highly sheared but resilient tropical cyclone with little change in its satellite appearance since the previous advisory. A persistent band of deep convection to the southeast of Theta remains within about 60 n mi of the storm center, despite a hostile environment characterized by dry mid-level air and 40-50 kt of northerly shear. Unfortunately, several scatterometer passes this evening missed the core of the cyclone. Since the satellite presentation is generally unchanged from earlier today, the initial intensity is held at 35 kt, which is consistent with a T2.5 Dvorak classification received from TAFB. Strong northerly shear and continued dry air entrainment will eventually take a toll on Theta, but recent satellite trends and the latest GFS simulated satellite imagery suggest that the cyclone could remain tropical a little longer than previously forecast. The latest NHC intensity forecast keeps Theta as a 35-kt tropical storm at 12 h before weakening it into a remnant low by 24 h. This follows the consensus of the latest intensity guidance. Thereafter, continued weakening is expected through its dissipation early next week. Theta is still moving eastward at around 4 kt. The cyclone should begin turning northeastward later today, and then accelerate north-northeastward on Monday as the shallow remnant low is steered by a low-level ridge centered over northwestern Africa. The remains of Theta are forecast to open up into a trough and dissipate by 60 h ahead of an approaching cold front over the northeastern Atlantic. The latest NHC track forecast is adjusted slightly to the left of the previous one, which generally follows the latest track consensus aids. On the forecast track, the remnant low of Theta is expected to pass near the island of Madeira late Sunday night or early Monday. FORECAST POSITIONS AND MAX WINDS INIT 15/0300Z 31.7N 18.7W 35 KT 40 MPH 12H 15/1200Z 31.9N 18.0W 35 KT 40 MPH 24H 16/0000Z 32.6N 17.4W 30 KT 35 MPH...POST-TROP/REMNT LOW 36H 16/1200Z 34.2N 17.1W 25 KT 30 MPH...POST-TROP/REMNT LOW 48H 17/0000Z 36.7N 15.9W 20 KT 25 MPH...POST-TROP/REMNT LOW 60H 17/1200Z...DISSIPATED $$ Forecaster Reinhart/Cangialosi
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Tropical Storm Theta Wind Speed Probabilities Number 21
2020-11-15 03:35:08| National Hurricane Center (Atlantic)
Issued at 0300 UTC SUN NOV 15 2020 000 FONT15 KNHC 150235 PWSAT5 TROPICAL STORM THETA WIND SPEED PROBABILITIES NUMBER 21 NWS NATIONAL HURRICANE CENTER MIAMI FL AL302020 0300 UTC SUN NOV 15 2020 AT 0300Z THE CENTER OF TROPICAL STORM THETA WAS LOCATED NEAR LATITUDE 31.7 NORTH...LONGITUDE 18.7 WEST WITH MAXIMUM SUSTAINED WINDS NEAR 35 KTS...40 MPH...65 KM/H. Z INDICATES COORDINATED UNIVERSAL TIME (GREENWICH) ATLANTIC STANDARD TIME (AST)...SUBTRACT 4 HOURS FROM Z TIME EASTERN STANDARD TIME (EST)...SUBTRACT 5 HOURS FROM Z TIME CENTRAL STANDARD TIME (CST)...SUBTRACT 6 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 SUN 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 SUN 12Z SUN 00Z MON 12Z MON 00Z TUE 00Z WED 00Z THU PERIODS TO TO TO TO TO TO TO 12Z SUN 00Z MON 12Z MON 00Z TUE 00Z WED 00Z THU 00Z FRI FORECAST HOUR (12) (24) (36) (48) (72) (96) (120) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - LOCATION KT $$ FORECASTER REINHART/CANGIALOSI
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