Potential Tropical Cyclone One Public Advisory Number 2A

By | June 18, 2024

000
WTNT31 KNHC 180531
TCPAT1

BULLETIN
Potential Tropical Cyclone One Intermediate Advisory Number 2A
NWS National Hurricane Center Miami FL       AL012024
100 AM CDT Tue Jun 18 2024

...HEAVY RAINS AND COASTAL FLOODING IN NORTHEASTERN MEXICO AND TEXAS 
LIKELY TO BEGIN LATER TODAY...


SUMMARY OF 100 AM CDT...0600 UTC...INFORMATION
----------------------------------------------
LOCATION...21.0N 93.0W
ABOUT 360 MI...585 KM ESE OF LA PESCA MEXICO
ABOUT 440 MI...705 KM SE OF BROWNSVILLE TEXAS
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...N OR 360 DEGREES AT 7 MPH...11 KM/H
MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES


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

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Watch is in effect for...
* The Texas coast from Port O'Connor southward to the mouth of the
Rio Grande
* The northeastern coast of Mexico south of the mouth of the Rio
Grande to Puerto de Altamira.

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

For storm information specific to your area in the United
States, including possible inland watches and warnings, please
monitor products issued by your local National Weather Service
forecast office. For storm information specific to your area
outside of the United States, please monitor products issued by
your national meteorological service.


DISCUSSION AND OUTLOOK
----------------------
At 100 AM CDT (0600 UTC), the disturbance was centered near latitude
21.0 North, longitude 93.0 West.  The system is moving toward the
north near 7 mph (11 km/h).  A turn toward the west-northwest is
expected tonight or Wednesday, and the system is likely to approach 
the western Gulf coast late Wednesday.

Maximum sustained winds remain near 40 mph (65 km/h) with higher
gusts.  The disturbance is forecast to become a tropical storm by
Wednesday.
* Formation chance through 48 hours...high...80 percent.
* Formation chance through 7 days...high...80 percent.  
The disturbance is quite large with tropical-storm-force winds
extending outward up to 290 miles (465 km) to the northeast of the
center.

The estimated minimum central pressure is 999 mb (29.50 inches).


HAZARDS AFFECTING LAND
----------------------
Key messages for Potential Tropical Cyclone One can be found in the
Tropical Cyclone Discussion under AWIPS header MIATCDAT1 and WMO
header WTNT41 KNHC.

RAINFALL: Potential Tropical Cyclone One is expected to produce
rainfall totals of 5 to 10 inches across northeast Mexico into South
Texas, with maximum totals of 15 inches possible.  This rainfall
will likely produce flash and urban flooding along with new and
renewed river flooding.  Mudslides are also possible in areas of
higher terrain across northeast Mexico.

For a complete depiction of forecast rainfall and flash flooding
associated with Potential Tropical Cyclone One, please see the
National Weather Service Storm Total Rainfall Graphic, available at
hurricanes.gov/graphics_at1.shtml?rainqpf and the Flash Flood Risk
graphic at hurricanes.gov/graphics_at1.shtml?ero

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...

Sargent, TX to Sabine Pass, TX...2-4 ft
Galveston Bay...2-4 ft
Mouth of the Rio Grande, TX to Sargent, TX...1-3 ft
Sabine Pass, TX to Vermilion/Cameron Parish Line, LA...1-3 ft

The deepest water will occur along the immediate coast near and to
the north of the landfall location, 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.

For a complete depiction of areas at risk of storm surge
inundation, please see the National Weather Service Peak
Storm Surge Graphic, available at
hurricanes.gov/graphics_at1.shtml?peakSurge.

In Mexico, minor coastal flooding is possible north of where the
center of the system crosses the coast in areas of onshore
winds.

WIND:  Tropical storm conditions are possible within the watch
area by Wednesday.


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

$$
Forecaster Pasch

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