[Tropical] Public Tropical Cyclone Advisory

[EMWIN Server]

WTNT31 KNHC 180838
TCPAT1

BULLETIN
Tropical Depression Iota Advisory Number  20
NWS National Hurricane Center Miami FL       AL312020
300 AM CST Wed Nov 18 2020

...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 intermediate advisory at 600 AM CST.
Next complete advisory at 900 AM CST.

$$
Forecaster Stewart
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