May 12, 2021

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Eta is Expected to Become a Hurricane Overnight : The Alabama Weather Blog

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BULLETIN
Tropical Storm Eta Advisory Number 5
NWS National Hurricane Center Miami FL AL292020
400 PM EST Sun Nov 01 2020

…ETA EXPECTED TO BECOME A HURRICANE OVERNIGHT…
…LIKELY TO BRING LIFE-THREATENING STORM SURGE, DAMAGING WINDS,
AND FLASH FLOODING AND LANDSLIDES TO PORTIONS OF CENTRAL AMERICA…

SUMMARY OF 400 PM EST…2100 UTC…INFORMATION
———————————————-
LOCATION…14.9N 78.9W
ABOUT 285 MI…460 KM E OF CABO GRACIAS A DIOS ON NIC/HON BORDER
ABOUT 305 MI…495 KM ENE OF PUERTO CABEZAS NICARAGUA
MAXIMUM SUSTAINED WINDS…65 MPH…100 KM/H
PRESENT MOVEMENT…W OR 270 DEGREES AT 15 MPH…24 KM/H
MINIMUM CENTRAL PRESSURE…992 MB…29.30 INCHES

WATCHES AND WARNINGS
——————–
CHANGES WITH THIS ADVISORY:

The government of Honduras has issued a Tropical Storm Watch from
west of Punta Patuca westward to Punta Castilla.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Hurricane Warning is in effect for…
* The coast of Nicaragua from the Honduras/Nicaragua border to
Sandy Bay Sirpi

A Tropical Storm Warning is in effect for…
* The northeastern coast of Honduras from Punta Patuca to the
Honduras/Nicaragua border

A Hurricane Watch is in effect for…
* The northeastern coast of Honduras from Punta Patuca to the
Honduras/Nicaragua border

A Tropical Storm Watch is in effect for…
* The northern coast of Honduras from west of Punta Patuca westward
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 Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area within 36 hours.

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 Watch means that tropical storm conditions are
possible within the watch area, generally within 48 hours.

Interests elsewhere in Nicaragua and Honduras should monitor the
progress of this system.

For storm information specific to your area, please monitor
products issued by your national meteorological service.

DISCUSSION AND OUTLOOK
———————-
At 400 PM EST (2100 UTC), the center of Tropical Storm Eta was
located near latitude 14.9 North, longitude 78.9 West. Eta is moving
toward the west near 15 mph (24 km/h), and this motion with some
decrease in forward speed is expected tonight. A slower motion
toward the west-southwest is forecast on Monday and Tuesday. On the
forecast track, the center of Eta is expected to approach the
northeastern coast of Nicaragua on Monday, and make landfall within
the Hurricane Warning area in Nicaragua Monday night or early
Tuesday. Eta is forecast to move inland over northern Nicaragua
through early Wednesday.

Data from a NOAA Hurricane Hunter aircraft indicate that the
maximum sustained winds have increased to near 65 mph (100 km/h)
with higher gusts. Rapid strengthening is forecast during the next
24 to 36 hours, and Eta is expected to become a hurricane tonight,
with additional strengthening likely until the hurricane makes
landfall Monday night or early Tuesday.

Tropical-storm-force winds extend outward up to 140 miles (220 km)
from the center.

The latest minimum central pressure reported by NOAA
reconnaissance aircraft is 992 mb (29.30 inches).

HAZARDS AFFECTING LAND
———————-
Key messages for Eta can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT4 and WMO header
WTNT44 KNHC.

WIND: Hurricane conditions are expected in the Hurricane Warning
area beginning Monday night, with tropical storm conditions
possible in this area by Monday afternoon. Tropical storm
conditions are expected in the Tropical Storm Warning area by
Monday afternoon, and hurricane conditions are possible in
the Hurricane Watch area by early Tuesday. Tropical Storm
conditions are possible in the Tropical Storm Watch area by early
Tuesday.

RAINFALL: Eta is expected to produce the following rainfall amounts
through Friday afternoon:

Central and northern Nicaragua into much of Honduras: 15 to 25
inches (380 to 635 mm), isolated amounts of 35 inches (890 mm).

Eastern Guatemala and southern Belize: 10 to 20 inches (255 to 510
mm), isolated amounts of 25 inches (635 mm).

Portions of Panama and Costa Rica: 10 to 15 inches (255 to 380 mm),
isolated amounts of 20 inches (510 mm).

Jamaica: 5 to 10 inches (125 to 255 mm), isolated amounts of 15
inches (380 mm) over southern areas.

Southern Haiti and the Cayman Islands: 3 to 5 inches (75 to 125 mm),
isolated amounts of 10 inches (255 mm)

This rainfall would lead to significant, life-threatening flash
flooding and river flooding, along with landslides in areas of
higher terrain.

STORM SURGE: A dangerous storm surge will raise water levels by as
much as 10 to 15 feet above normal tide levels in areas of onshore
winds along the coast of Nicaragua within the hurricane warning
area, and 3 to 5 feet above normal tide levels along the coast of
Honduras within the tropical storm warning area. Near the coast,
the surge will be accompanied by large and destructive waves.

SURF: Swells generated by Eta are expected to affect portions of
the coast of Central America and the Yucatan Peninsula of Mexico
during the next few days. 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 700 PM EST.
Next complete advisory at 1000 PM EST.

$$
Forecaster Brown

Category: ALL POSTS, Tropical



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