[Tropical] Public Tropical Cyclone Advisory

[EMWIN Server]

WTNT34 KNHC 031747
TCPAT4

BULLETIN
Hurricane Eta Intermediate Advisory Number 12A
NWS National Hurricane Center Miami FL       AL292020
100 PM EST Tue Nov 03 2020

...EYEWALL OF EXTREMELY DANGEROUS HURRICANE ETA MOVING ONSHORE
ALONG THE COAST OF NORTHEASTERN NICARAGUA...
...LIFE-THREATENING STORM SURGE, CATASTROPHIC WINDS, FLASH FLOODING,
AND LANDSLIDES EXPECTED ACROSS PORTIONS OF CENTRAL AMERICA...


SUMMARY OF 100 PM EST...1800 UTC...INFORMATION
----------------------------------------------
LOCATION...13.7N 83.3W
ABOUT 20 MI...35 KM SSE OF PUERTO CABEZAS NICARAGUA
MAXIMUM SUSTAINED WINDS...140 MPH...220 KM/H
PRESENT MOVEMENT...W OR 260 DEGREES AT 3 MPH...6 KM/H
MINIMUM CENTRAL PRESSURE...940 MB...27.76 INCHES


WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:

None

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
* The coast of Nicaragua from south of Sandy Bay Sirpi to Laguna
de Perlas.

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 Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning.

A Hurricane Watch means that hurricane conditions are possible
within the watch area.

A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area.

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 100 PM EST (1800 UTC), the center of Hurricane Eta was located
near latitude 13.7 North, longitude 83.3 West. Eta is moving toward
the west near 3 mph (6 km/h).  A faster westward or west-
northwestward motion is expected to begin later today and continue
through Thursday.  On the forecast track, the center of Eta is
expected to make landfall along the coast of Nicaragua within the
Hurricane Warning area this afternoon.  The center of Eta is
forecast to move farther inland over northern Nicaragua through
Wednesday morning, and then move across the central portions of
Honduras by Thursday morning.

Maximum sustained winds are near 140 mph (220 km/h) with higher
gusts.  Eta is a category 4 hurricane on the Saffir-Simpson
Hurricane Wind Scale.  Little change in strength is likely before
landfall.  Weakening will begin after the center moves inland later
today.

Hurricane-force winds extend outward up to 25 miles (35 km) from
the center and tropical-storm-force winds extend outward up to 115
miles (185 km).

The estimated minimum central pressure is 940 mb (27.76 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:  Catastrophic wind damage is expected where Eta's eyewall
moves onshore within the Hurricane Warning area.  Tropical storm
conditions are expected in the Tropical Storm Warning area, and
hurricane conditions are possible in the Hurricane Watch area.
Tropical Storm conditions are possible in the Tropical Storm Watch
area later today.

RAINFALL:  Eta is expected to produce the following rainfall amounts
through Sunday morning:

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

Eastern Guatemala and 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 25 inches (635 mm).

El Salvador and southeast Mexico: 5 to 10 inches (125 to 255 mm),
isolated amounts of 15 inches (380 mm)

Jamaica, Southern Haiti, the Cayman Islands: An additional 3 to 5
inches (75 to 125 mm), isolated storm totals of 15 inches (380 mm).

This rainfall will lead to catastrophic, life-threatening flash
flooding and river flooding, along with landslides in areas of
higher terrain of Central America.  Flash flooding and river
flooding will be possible across Jamaica, southeast Mexico, El
Salvador, southern Haiti, and the Cayman Islands.

STORM SURGE:  A dangerous storm surge will raise water levels by as
much as 14 to 21 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 complete advisory at 400 PM EST.

$$
Forecaster Brown
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