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Tropical Storm Eta Advisory Number 47
NWS National Hurricane Center Miami FL AL292020
1000 PM EST Wed Nov 11 2020
...ETA CONTINUES TO BRING HEAVY RAINS AND STRONG WINDS TO PORTIONS
OF WEST-CENTRAL FLORIDA...
SUMMARY OF 1000 PM EST...0300 UTC...INFORMATION
ABOUT 55 MI...90 KM NW OF ST. PETERSBURG FLORIDA
ABOUT 60 MI...95 KM WNW OF TAMPA FLORIDA
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H
PRESENT MOVEMENT...N OR 10 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...993 MB...29.33 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
A Tropical Storm Warning has been issued from the
Flagler/Volusia County Florida line northward to St. Andrews Sound
The Tropical Storm Warning south of Boca Grande Florida has been
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...
* Boca Grande to Suwannee River Florida
* Flagler/Volusia County Florida line northward to St. Andrews
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
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 1000 PM EST (0300 UTC), the center of Tropical Storm Eta was
located near latitude 28.3 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 near but just offshore of the
west-central coast of Florida during the next few hours, and move
inland over the northern portion of the Florida peninsula on
Thursday morning. Eta is expected to move northeastward into the
western Atlantic late Thursday and early Friday.
Maximum sustained winds are near 65 mph (100 km/h) with higher
gusts. Slow weakening is expected as Eta approaches the west coast
of Florida tonight, followed by more rapid weakening after landfall
occurs on Thursday.
Tropical-storm-force winds extend outward up to 115 miles (185 km)
from the center. Albert Whitted Airport near St. Petersburg
recently reported sustained winds of 40 mph (64 km/h) and a gust of
52 mph (84 km/h). A Weatherflow site in Tampa Bay recently measured
sustained winds of 45 mph (72 km/h) and a gust of 59 mph (94 km/h).
The minimum central pressure reported by an Air Force Hurricane
Hunter aircraft is 993 mb (29.33 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
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
RAINFALL: Eta is expected to produce the following rainfall totals:
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 to 25 inches in South Florida.
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 through Thursday morning.
Tropical storm conditions are possible in the watch area along the
Florida Big Bend region on Thursday.
TORNADOES: A few tornadoes are possible overnight 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 intermediate advisory at 100 AM EST.
Next complete advisory at 400 AM EST.