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Remnants of Iota Forecast Advisory Number 21

2020-11-18 15:40:32| National Hurricane Center (Atlantic)

Issued at 1500 UTC WED NOV 18 2020 000 WTNT21 KNHC 181440 TCMAT1 REMNANTS OF IOTA FORECAST/ADVISORY NUMBER 21 NWS NATIONAL HURRICANE CENTER MIAMI FL AL312020 1500 UTC WED NOV 18 2020 SUMMARY OF WATCHES AND WARNINGS IN EFFECT... THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. REMNANTS OF CENTER LOCATED NEAR 13.8N 89.5W AT 18/1500Z POSITION ACCURATE WITHIN 15 NM PRESENT MOVEMENT TOWARD THE WEST OR 270 DEGREES AT 10 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1006 MB MAX SUSTAINED WINDS 25 KT WITH GUSTS TO 35 KT. 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 13.8N 89.5W AT 18/1500Z AT 18/1200Z CENTER WAS LOCATED NEAR 13.8N 89.0W FORECAST VALID 19/1200Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 13.8N 89.5W THIS IS THE LAST FORECAST/ADVISORY ISSUED BY THE NATIONAL HURRICANE CENTER ON THIS SYSTEM. FOR ADDITIONAL INFORMATION ON THE REMNANTS, PLEASE SEE HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER SERVICE...UNDER AWIPS HEADER NFDHSFEPI AND WMO HEADER FZPN02 KWBC. $$ FORECASTER PASCH

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Tropical Depression Iota Forecast Advisory Number 20

2020-11-18 11:17:46| National Hurricane Center (Atlantic)

Issued at 0900 UTC WED NOV 18 2020 000 WTNT21 KNHC 181017 CCA TCMAT1 TROPICAL DEPRESSION IOTA FORECAST/ADVISORY NUMBER 20...CORRECTED NWS NATIONAL HURRICANE CENTER MIAMI FL AL312020 0900 UTC WED NOV 18 2020 CORRECTED FOR NO INTERMEDIATE CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY... THE TROPICAL STORM WARNING FOR THE NORTHERN COAST OF HONDURAS HAS BEEN DISCONTINUED. SUMMARY OF WATCHES AND WARNINGS IN EFFECT... THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT. TROPICAL DEPRESSION CENTER LOCATED NEAR 13.7N 88.3W AT 18/0900Z POSITION ACCURATE WITHIN 15 NM PRESENT MOVEMENT TOWARD THE WEST-SOUTHWEST OR 255 DEGREES AT 11 KT ESTIMATED MINIMUM CENTRAL PRESSURE 1007 MB MAX SUSTAINED WINDS 30 KT WITH GUSTS TO 45 KT. 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 13.7N 88.3W AT 18/0900Z AT 18/0600Z CENTER WAS LOCATED NEAR 13.8N 87.8W FORECAST VALID 18/1800Z 13.0N 89.9W...POST-TROP/REMNT LOW MAX WIND 20 KT...GUSTS 30 KT. FORECAST VALID 19/0600Z...DISSIPATED REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 13.7N 88.3W NEXT ADVISORY AT 18/1500Z $$ FORECASTER STEWART

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Summary for Tropical Depression Iota (AT1/AL312020)

2020-11-18 11:16:16| National Hurricane Center (Atlantic)

...IOTA WEAKENS TO A TROPICAL DEPRESSION OVER EL SALVADOR... ...THREAT OF CATASTROPHIC FLASH FLOODING AND MUDSLIDES WILL CONTINUE ACROSS PORTIONS OF CENTRAL AMERICA... As of 3:00 AM CST Wed Nov 18 the center of Iota was located near 13.7, -88.3 with movement WSW at 13 mph. The minimum central pressure was 1007 mb with maximum sustained winds of about 35 mph.

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Tropical Depression Iota Public Advisory Number 20

2020-11-18 11:16:16| National Hurricane Center (Atlantic)

Issued at 300 AM CST Wed Nov 18 2020 000 WTNT31 KNHC 181015 CCA TCPAT1 BULLETIN Tropical Depression Iota Advisory Number 20...Corrected NWS National Hurricane Center Miami FL AL312020 300 AM CST Wed Nov 18 2020 Corrected Next Advisory section ...IOTA WEAKENS TO A TROPICAL DEPRESSION OVER EL SALVADOR... ...THREAT OF CATASTROPHIC FLASH FLOODING AND MUDSLIDES WILL CONTINUE ACROSS PORTIONS OF CENTRAL AMERICA... SUMMARY OF 300 AM CST...0900 UTC...INFORMATION ---------------------------------------------- LOCATION...13.7N 88.3W ABOUT 20 MI...35 KM NW OF EL PAPALON EL SALVADOR ABOUT 55 MI...90 KM E OF SAN SALVADOR EL SALVADOR MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H PRESENT MOVEMENT...WSW OR 255 DEGREES AT 13 MPH...20 KM/H MINIMUM CENTRAL PRESSURE...1007 MB...29.74 INCHES WATCHES AND WARNINGS -------------------- CHANGES WITH THIS ADVISORY: The Tropical Storm Warning for the northern coast of Honduras has been discontinued. SUMMARY OF WATCHES AND WARNINGS IN EFFECT: There are no coastal watches or warnings in effect. For storm information specific to your area, please monitor products issued by your national meteorological service. DISCUSSION AND OUTLOOK ---------------------- At 300 AM CST (0900 UTC), the center of Tropical Depression Iota was located near latitude 13.7 North, longitude 88.3 West. Iota is moving toward the west-southwest near 13 mph (20 km/h), and this general motion is expected to continue through today. On the forecast track, the center of Iota will move across El Salvador before the system dissipates later today. Maximum sustained winds have decreased to near 35 mph (55 km/h) with higher gusts. Additional weakening is forecast, and Iota is expected to degenerate into a post-tropical remnant low pressure system later today. The estimated minimum central pressure based on nearby surface observations is 1007 mb (29.74 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. RAINFALL: Iota is expected to produce the following additional rainfall accumulations through Thursday: Portions of Honduras, Guatemala, southern Belize: 4 to 8 inches (100 to 200 mm), with isolated maximum totals of 12 inches (300 mm). Portions of Nicaragua and El Salvador: 2 to 4 inches (50 to 100 mm), with isolated maximum totals of 6 inches (150 mm). This rainfall will lead to significant, life-threatening flash flooding and river flooding, along with mudslides in areas of higher terrain. 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 900 AM CST. $$ Forecaster Stewart

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