[Tropical] Public Tropical Cyclone Advisory

[EMWIN Server]

WTNT34 KNHC 112357
TCPAT4

BULLETIN
Tropical Storm Eta Intermediate Advisory Number 46A
NWS National Hurricane Center Miami FL       AL292020
700 PM EST Wed Nov 11 2020

...ETA CONTINUES TO PRODUCE HEAVY RAINS AND STRONG WINDS ACROSS
PORTIONS OF WEST-CENTRAL FLORIDA...


SUMMARY OF 700 PM EST...0000 UTC...INFORMATION
----------------------------------------------
LOCATION...27.9N 83.4W
ABOUT 45 MI...70 KM W OF ST. PETERSBURG FLORIDA
ABOUT 55 MI...90 KM W OF TAMPA FLORIDA
MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H
PRESENT MOVEMENT...N OR 10 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...993 MB...29.32 INCHES


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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Storm Surge Warning is in effect for...
* Bonita Beach to Suwanee River Florida, including Tampa Bay
and Charlotte Harbor

A Tropical Storm Warning is in effect for...
* Bonita Beach to Suwannee River Florida

A Storm Surge Watch is in effect for...
* Steinhatchee River to Suwannee River Florida

A Tropical Storm Watch is in effect for...
* North of the Suwannee River to Aucilla River Florida

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within the
next 6 to 12 hours.

A Storm Surge Warning means there is a danger of life-threatening
inundation, from rising water moving inland from the coastline, in
this case within 24 hours in the indicated locations. For a
depiction of areas at risk, please see the National Weather Service
Storm Surge Watch/Warning Graphic, available at hurricanes.gov.
This is a life-threatening situation.  Persons located within these
areas should take all necessary actions to protect life and property
from rising water and the potential for other dangerous conditions.
Promptly follow evacuation and other instructions from local
officials.

A Storm Surge Watch means there is a possibility of life-
threatening inundation, from rising water moving inland from the
coastline, in this case within 24 hours. For a depiction of areas
at risk, please see the National Weather Service Storm Surge
Watch/Warning Graphic, available at hurricanes.gov.

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

Interests elsewhere along the Gulf Coast of Florida should monitor
the progress of Eta.

For storm information specific to your area, including possible
inland watches and warnings, please monitor products issued by your
local National Weather Service forecast office.


DISCUSSION AND OUTLOOK
----------------------
At 700 PM EST (0000 UTC), the center of Tropical Storm Eta was
located by an Air Force Hurricane Hunter aircraft near latitude 27.9
North, longitude 83.4 West.  Eta is moving toward the north near 12
mph (19 km/h), and this general motion is expected to continue
overnight, followed by a turn toward the north-northeast and
northeast Thursday morning.  On the forecast track, the center of
Eta will move closer to but just offshore of the west-central coast
of Florida tonight, and move inland over the northern portion of the
Florida peninsula on Thursday.  Eta is expected to move
northeastward into the western Atlantic late Thursday and early
Friday.

Maximum sustained winds are near 70 mph (110 km/h) with higher
gusts.  Slow weakening is expected as Eta approaches the west coast
of Florida tonight, followed by rapid weakening after landfall
occurs on Thursday.

Tropical-storm-force winds extend outward up to 115 miles (185 km)
from the center.  During the past couple of hours, a C-MAN
observing station at Venice Beach measured a sustained wind of 47
mph (76 km/h).  A Weatherflow site at the Skyway fishing pier
recently reported a sustained wind of 43 mph (69 km/h) and a gust to
55 mph (89 km/h). Another Weatherflow site at Clam Bayou Nature
Preserve, near St. Petersburg, just reported a gust of 51 mph (82
km/h).

The minimum central pressure reported by the Hurricane Hunters is
993 mb (29.32 inches).


HAZARDS AFFECTING LAND
----------------------
Key messages for Eta can be found in the Tropical Cyclone Discussion
under AWIPS header MIATCDAT4, WMO header WTNT44 KNHC, and on the
web at www.hurricanes.gov/text/MIATCDAT4.shtml.

STORM SURGE:  The combination of a dangerous storm surge and the
tide will cause normally dry areas near the coast to be flooded by
rising waters moving inland from the shoreline.  The water could
reach the following heights above ground somewhere in the indicated
areas if the peak surge occurs at the time of high tide...

Anclote River to Boca Grande, FL including Tampa Bay...3-5 ft
Boca Grande, FL to Bonita Beach, FL including Charlotte
Harbor...2-4 ft
Steinhatchee River to Anclote River...2-4 ft
Bonita Beach to Flamingo...1-2 ft

The deepest water will occur along the immediate coast in areas of
onshore winds, where the surge will be accompanied by large and
dangerous waves.  Surge-related flooding depends on the relative
timing of the surge and the tidal cycle, and can vary greatly over
short distances.  For information specific to your area, please see
products issued by your local National Weather Service forecast
office.

RAINFALL:  Eta is expected to produce the following rainfall totals:

Western Cuba: an additional 1 to 3 inches (25 to 75 mm) through
Wednesday, with isolated maximum storm total accumulations of 25
inches (765 mm).

West and central Florida, through Thursday: 2 to 4 inches, with
maximum storm total accumulations of 6 inches.

North and South Florida, through Thursday: An additional 1 to 2
inches, with isolated maximum storm total accumulations of 4 inches
in North Florida and 20 inches in South Florida.

Flash and river flooding will be possible in western Cuba through
tonight, along with landslides in areas of higher terrain.
Additional flash and urban flooding will be possible in South
Florida through Thursday, especially across previously inundated
areas. Flash,urban, and isolated minor river flooding is expected
across portions of West and North Florida through Thursday.

WIND:  Tropical storm conditions are expected in the Tropical Storm
Warning area along the Florida west coast this evening through
early Thursday.  Tropical storm conditions are possible in the
watch area along the Florida Big Bend region by Thursday.

TORNADOES:  A few tornadoes are possible through tonight over parts
of western and central Florida.

SURF:  Swells generated by Eta are expected to affect the north
coast of Cuba, southern and western Florida, and the Florida Keys
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 1000 PM EST.

$$
Forecaster Pasch
This weather bulletin was brought to you by:
www.nashvilleweather.net