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Potential Tropical Cyclone Sixteen Intermediate Advisory Number 3A
NWS National Hurricane Center Miami FL       AL162019
100 AM CDT Fri Oct 18 2019

...DISTURBANCE EXPECTED TO BECOME A TROPICAL OR SUBTROPICAL STORM
LATER TODAY...


SUMMARY OF 100 AM CDT...0600 UTC...INFORMATION
----------------------------------------------
LOCATION...24.1N 93.2W
ABOUT 430 MI...690 KM SW OF THE MOUTH OF THE MISSISSIPPI RIVER
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...NE OR 45 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES


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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* Mississippi/Alabama border to Yankeetown Florida
* Grand Isle Louisiana to the Mouth of the Pearl River

A Storm Surge Warning is in effect for...
* Indian Pass Florida to Clearwater Beach Florida

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area within 36 hours.

A Storm Surge Warning means there is a danger of life-threatening
inundation, from rising water moving inland from the coastline,
during the next 36 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.

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 100 AM CDT (0600 UTC), the disturbance was centered near latitude
24.1 North, longitude 93.2 West. The system has been been moving
eastward during the past couple of hours, but is expected to resume
a track to the northeast near 12 mph (19 km/h) later today. A
northeastward motion at a faster forward speed is expected for the
next couple of days. On the forecast track, the system will approach
the northern Gulf Coast later today and tonight, and then move over
portions of the southeastern United States on Saturday.

Maximum sustained winds remain near 40 mph (65 km/h) with higher
gusts. The disturbance is expected to develop into a tropical or
subtropical storm later today, and a slow strengthening is then
anticipated. An Air Force plane will investigate the disturbance
again in several hours.
* Formation chance through 48 hours...high... 90 percent
* Formation chance through 5 days...high...90 percent

Tropical-storm-force winds extend outward up to 115 miles (185 km)
from the center.

The estimated minimum central pressure is 1004 mb (29.65 inches).


HAZARDS AFFECTING LAND
----------------------
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...

Indian Pass FL to Chassahowitzka FL...3 to 5 ft
Chassahowitzka to Clearwater Beach FL...2 to 4 ft

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.

WIND:  Tropical storm conditions are expected to first reach the
coast within the warning area by later today, making outside
preparations difficult or dangerous.

Gale-force winds are possible along portions of the Atlantic coast
of the southeastern United States by Saturday.

RAINFALL: The disturbance is expected to produce total rainfall
accumulations of 2 to 4 inches this weekend from the central Gulf
Coast and northern and central Florida to the eastern Carolinas,
with isolated maximum amounts of 5 inches.


NEXT ADVISORY
-------------
Next complete advisory at 400 AM CDT.

$$
Forecaster Avila

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