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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
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:
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
* 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
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
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
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
Next complete advisory at 300 AM CST.