317
WTNT32 KNHC 230242
TCPAT2

BULLETIN
Tropical Storm Bertha Advisory Number 15
NWS National Hurricane Center Miami FL AL022026
1000 PM CDT Wed Jul 22 2026

...BERTHA NEAR THE SOUTHERN LOUISIANA COAST...
...TROPICAL STORM WARNING EXTENDED WESTWARD TO THE UPPER TEXAS
COAST...


SUMMARY OF 1000 PM CDT...0300 UTC...INFORMATION -----------------------------------------------
LOCATION...29.4N 91.1W
ABOUT 75 MI...115 KM SW OF NEW ORLEANS LOUISIANA
ABOUT 135 MI...215 KM ESE OF LAKE CHARLES LOUISIANA
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...W OR 260 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...1002 MB...29.59 INCHES


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

A Tropical Storm Warning has been issued west of Cameron Louisiana
to Sargent, Texas.

The Tropical Storm Watch for Lake Maurepas is discontinued.

The Tropical Storm Warning east of the Alabama/Mississippi border
is discontinued.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Tropical Storm Warning is in effect for...
* Alabama/Mississippi border to Sargent, Texas
* Metropolitan New Orleans and Lake Pontchartrain

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within 24
hours.

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 CDT (0300 UTC), the center of Tropical Storm Bertha was
located near latitude 29.4 North, longitude 91.1 West. Bertha is
moving toward the west near 12 mph (19 km/h). A generally westward
motion is expected during the next day or so. On the forecast
track, the center of Bertha will move near or along the Louisiana
and upper Texas coasts through Thursday afternoon, and then move
farther inland into Texas Thursday evening and Thursday night.

Maximum sustained winds are near 45 mph (75 km/h) with higher gusts.
Little change in strength is expected during the next day or so,
and Bertha is forecast to maintain tropical storm intensity
up until it reaches the upper Texas coast on Thursday. Bertha is
expected to dissipate inland over Texas by Thursday night or Friday.

Tropical-storm-force winds extend outward up to 160 miles (260 km)
from the center. An oil platform south of the Louisiana coast
recently reported sustained winds of 43 mph (69 km/h) at an
elevation of 82 ft (25 m).

The estimated minimum central pressure is 1002 mb (29.59 inches).


HAZARDS AFFECTING LAND
----------------------
Key messages for Tropical Storm Bertha can be found in the Tropical
Cyclone Discussion under AWIPS header MIATCDAT2 and WMO header
WTNT42 KNHC.

WIND: Tropical storm conditions will continue spreading across
portions of the northern and northwestern Gulf Coast within the
warning area through Thursday.

STORM SURGE: The combination of storm surge and the tide will
cause normally dry areas near the immediate 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...

Alabama/Mississippi border to Port Bolivar, TX...1-3 ft
Lake Pontchartrain...1-3 ft

The deepest water will occur along the immediate coast.
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_at2.shtml?peakSurge.

RAINFALL: Bertha is expected to produce total rainfall amounts of 2
to 4 inches with isolated totals to 6 inches through Thursday night
along Texas Gulf Coast and South Texas. This rainfall may produce
isolated flash flooding, especially in urban areas.

For a complete depiction of forecast rainfall associated with
Bertha, please see the National Weather Service Storm Total Rainfall
Graphic available at hurricanes.gov/graphics_at2.shtml?rainqpf and
the Flash Flood Risk graphic at
hurricanes.gov/graphics_at2.shtml?ero.

SURF: Swells generated by Bertha will continue spreading westward
along the northern Gulf Coast 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.

A depiction of rip current risk for the United States can be found
at: hurricanes.gov/graphics_at2.shtml?ripCurrents


NEXT ADVISORY
-------------
Next intermediate advisory at 100 AM CDT.
Next complete advisory at 400 AM CDT.

$$
Forecaster Pasch


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