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Tropical Storm Iota Graphics
2020-11-18 06:58:34| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Wed, 18 Nov 2020 05:58:34 GMT Wind Speed Probabilities last updated Wed, 18 Nov 2020 03:24:29 GMT
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iota
Summary for Tropical Storm Iota (AT1/AL312020)
2020-11-18 06:56:38| National Hurricane Center (Atlantic)
...IOTA MOVING OVER SOUTHERN HONDURAS TOWARDS EL SALVADOR... ...THREAT OF CATASTROPHIC FLASH FLOODING AND MUDSLIDES CONTINUES ACROSS PORTIONS OF CENTRAL AMERICA... As of 12:00 AM CST Wed Nov 18 the center of Iota was located near 13.7, -87.8 with movement W at 12 mph. The minimum central pressure was 1005 mb with maximum sustained winds of about 40 mph.
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Tropical Storm Iota Public Advisory Number 19A
2020-11-18 06:56:38| National Hurricane Center (Atlantic)
Issued at 1200 AM CST Wed Nov 18 2020 000 WTNT31 KNHC 180556 TCPAT1 BULLETIN Tropical Storm Iota Intermediate Advisory Number 19A NWS National Hurricane Center Miami FL AL312020 1200 AM CST Wed Nov 18 2020 ...IOTA MOVING OVER SOUTHERN HONDURAS TOWARDS EL SALVADOR... ...THREAT OF CATASTROPHIC FLASH FLOODING AND MUDSLIDES CONTINUES ACROSS PORTIONS OF CENTRAL AMERICA... SUMMARY OF 1200 AM CST...0600 UTC...INFORMATION ----------------------------------------------- LOCATION...13.7N 87.8W ABOUT 25 MI...40 KM NE OF EL PAPALON EL SALVADOR MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H PRESENT MOVEMENT...W OR 270 DEGREES AT 12 MPH...19 KM/H MINIMUM CENTRAL PRESSURE...1005 MB...29.68 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: None. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: A Tropical Storm Warning is in effect for... * The coast of Honduras west of Punta Castilla to the Honduras/Guatemala border * Bay Islands A Tropical Storm Warning means that tropical storm conditions are expected somewhere within the warning area. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 1200 AM CST (0600 UTC), the center of Tropical Storm Iota was located near latitude 13.7 North, longitude 87.8 West. Iota is moving toward the west near 12 mph (19 km/h), and a westward to west-southwestward motion is expected through today. On the forecast track, the center of Iota will move across portions of southern Honduras and El Salvador before the system dissipates later today. Maximum sustained winds are near 40 mph (65 km/h) with higher gusts. Rapid weakening is forecast, and Iota should weaken to a tropical depression later this morning and degenerate into a remnant low pressure area by this afternoon. Tropical-storm-force winds extend outward up to 185 miles (295 km) from the center, mainly along the coast in the Tropical Storm Warning area. Recent satellite-derived wind data indicate that tropical-storm-force wind gusts are still occurring along the northwestern coast of Honduras. The estimated minimum central pressure based on nearby surface observations is 1005 mb (29.68 inches). HAZARDS AFFECTING LAND ---------------------- Key messages for Iota 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. WIND: Tropical-storm conditions will continue for a couple of more hours well to the north of the center along the Caribbean coast of northwestern Honduras. RAINFALL: Iota is expected to produce the following additional rainfall accumulations through Thursday: El Salvador, Panama, western Honduras, northern Nicaragua, southern Belize : 4 to 8 inches (100 to 200 mm), with isolated maximum totals of 12 inches (300 mm). This rainfall will lead to significant, life-threatening flash flooding and river flooding, along with mudslides in areas of higher terrain. Southern Nicaragua and Costa Rica: 3 to 5 inches (75 to 125 mm), with isolated maximum totals of 10 inches (250 mm). SURF: Swells generated by Iota will affect much of the coast of Central America and the Yucatan Peninsula during the next 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 ------------- Next complete advisory at 300 AM CST. $$ Forecaster Stewart
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Tropical Storm Iota Graphics
2020-11-18 03:37:00| National Hurricane Center (Atlantic)
5-Day Uncertainty Track last updated Wed, 18 Nov 2020 02:37:00 GMT Wind Speed Probabilities last updated Wed, 18 Nov 2020 03:24:29 GMT
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iota
Tropical Storm Iota Forecast Discussion Number 19
2020-11-18 03:35:37| National Hurricane Center (Atlantic)
Issued at 900 PM CST Tue Nov 17 2020 000 WTNT41 KNHC 180235 TCDAT1 Tropical Storm Iota Discussion Number 19 NWS National Hurricane Center Miami FL AL312020 900 PM CST Tue Nov 17 2020 Most of the deep convection associated with Iota has weakened during the past several hours, with the primary remaining convection now in a band well removed from the center in the northwestern semicircle. The initial intensity is reduced to 35 kt, and these winds are possibly occuring in two areas - a small area near what is left of the inner core and along the coast of Honduras in the Tropical Storm warning area. Iota should continue to quickly weaken, with the system expected to drop below tropical-storm strength during the next few hours and to dissipate completely between 12-24 h. At this time, the available guidance is not bullish on any regeneration of the system over the Pacific. The initial motion is 270/10. The cyclone or its remnants should move westward to west-southwestward before dissipation occurs. Iota is still expected to produce very serious hazards while it is over central America, including flash flooding and mud slides, These hazards could result in potentially catastrophic effects, especially when compounded upon Hurricane Eta's destruction from a couple of weeks ago. Key Messages: 1. Life-threatening flash flooding and river flooding is expected through Thursday across portions of Central America due to heavy rainfall from Iota. Flooding and mudslides across portions of Honduras, Nicaragua and Guatemala could be exacerbated by saturated soils in place, resulting in significant to potentially catastrophic impacts. 2. Tropical-storm conditions, primarily close to the center of Iota and along the coast of Honduras, are still expected for the next few hours. FORECAST POSITIONS AND MAX WINDS INIT 18/0300Z 13.7N 87.3W 35 KT 40 MPH...INLAND 12H 18/1200Z 13.4N 88.7W 25 KT 30 MPH...POST-TROP/INLAND 24H 19/0000Z...DISSIPATED $$ Forecaster Beven
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