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Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service New Orleans LA
1129 AM CDT Wed Aug 23 2017

GMZ530-532-534-536-538-550-552-555-557-570-572-575-577-LAZ034>037-
039-040-046>050-056>072-MSZ068>071-077-080>082-240430-
Lake Pontchartrain and Lake Maurepas-Mississippi Sound-
Lake Borgne-Chandeleur Sound-Breton Sound-
Coastal Waters from Port Fourchon LA to Lower Atchafalaya River
LA out 20 nm-
Coastal waters from the Southwest Pass of the Mississippi River
to Port Fourchon Louisiana out 20 NM-
Coastal Waters from Boothville LA to Southwest Pass of the
Mississippi River out 20 nm-
Coastal waters from Pascagoula Mississippi to Stake Island out
20 NM-
Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya
River LA from 20 to 60 NM-
Coastal waters from Southwest Pass of the Mississippi River to
Port Fourchon Louisiana from 20 to 60 NM-
Coastal Waters from Stake Island LA to Southwest Pass of the
Mississippi River from 20 to 60 nm-
Coastal waters from Pascagoula Mississippi to Stake Island
Louisiana out 20 to 60 NM-Pointe Coupee-West Feliciana-
East Feliciana-St. Helena-Washington-St. Tammany-Iberville-
West Baton Rouge-East Baton Rouge-Ascension-Livingston-Assumption-
St. James-St. John The Baptist-Upper Lafourche-St. Charles-
Upper Jefferson-Orleans-Upper Plaquemines-Upper St. Bernard-
Upper Terrebonne-Lower Terrebonne-Lower Lafourche-Lower Jefferson-
Lower Plaquemines-Lower St. Bernard-Northern Tangipahoa-
Southern Tangipahoa-Wilkinson-Amite-Pike-Walthall-Pearl River-
Hancock-Harrison-Jackson-
1129 AM CDT Wed Aug 23 2017

This Hazardous Weather Outlook is for portions of Southeast
Louisiana...South Mississippi and the adjacent coastal waters.

.DAY ONE...This Afternoon and Tonight

Scattered showers and thunderstorms are expected today. A few
storms could become strong producing gusty winds, frequent
lightning and heavy downpours that could result in localized
street flooding.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Tropical Depression Harvey is expected to strengthen to a tropical
storm and move from the southwestern Gulf of Mexico towards the
Texas coast on Friday. There is the potential for a prolonged
heavy rainfall event as well as gusty winds and high tide impacts
possibly starting by the weekend. Please remain attentive to the
future progress, forecasts and advisories from the National
Hurricane Center regarding this system.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not requested at this time, but activation
could occur this weekend or early next week.

$$

TD

Hazardous Weather Outlook
National Weather Service Shreveport LA
1154 AM CDT Wed Aug 23 2017

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-241700-
Sevier-Howard-Little River-Hempstead-Nevada-Miller-Lafayette-
Columbia-Union-Caddo-Bossier-Webster-Claiborne-Lincoln-De Soto-
Red River-Bienville-Jackson-Ouachita-Sabine-Natchitoches-Winn-
Grant-Caldwell-La Salle-McCurtain-Bowie-Franklin-Titus-Camp-
Morris-Cass-Wood-Upshur-Marion-Smith-Gregg-Harrison-Cherokee-Rusk-
Panola-Nacogdoches-Shelby-Angelina-San Augustine-
1154 AM CDT Wed Aug 23 2017

This Hazardous Weather Outlook is for portions of south central
Arkansas, southwest Arkansas, north central Louisiana, northwest
Louisiana, southeast Oklahoma, east Texas and northeast Texas.

.DAY ONE...This Afternoon and Tonight...

Scattered showers and thunderstorms will be possible areawide
today. Some of these storms could produce gusty winds, frequent
lightning, and heavy downpours. No other hazardous weather is
expected at this time.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday...

Thunderstorms will continue to shift well south of I-20 for
Thursday, but begin to lift back northward on Friday. Meanwhile,
Tropical Depression Harvey will continue to strengthen and make
landfall along the Texas Coastal Bend by Friday night. Harvey is
modeled to move northeastward into East Texas and South Louisiana
this weekend into next week. At this time, rainfall amounts of
six to ten inches are expected across portions of Deep East Texas
and adjacent Central Louisiana, with isolated higher amounts
possible. Lesser amounts are expected further north in our area.
If these rainfall amounts pan out, flash flooding as well as river
flooding will be likely. However, uncertainty is high with this
forecast, and adjustments to rainfall amounts and timing are
likely over the next few days.

.SPOTTER INFORMATION STATEMENT...

Activation of emergency management personnel, amateur radio
operators and storm spotters will not be needed through tonight.

$$

12

Hazardous Weather Outlook
National Weather Service Lake Charles LA
525 AM CDT Wed Aug 23 2017

GMZ430-432-435-450-452-455-470-472-475-241030-
Sabine Lake-Calcasieu Lake-Vermilion Bay-
Coastal waters from Cameron LA to High Island TX out 20 NM-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
Waters from Cameron LA to High Island TX from 20 to 60 NM-
Waters from  Intracoastal City to Cameron LA from 20 to 60 NM-
Waters from Lower Atchafalaya River to Intracoastal City LA from
20 to 60 NM-
525 AM CDT Wed Aug 23 2017

This Hazardous Weather Outlook is for portions of Gulf of Mexico.

.DAY ONE...Today and Tonight
Southeast winds today with seas from one to two feet. A cold
front is expected to move into southern Louisiana towards sunrise
tomorrow.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday
But the real player will be the redevelopment of Harvey.
As a result looking for showers and thunderstorms...winds will be
strong and gusty with seas building. These conditions will persist
through the weekend and into Monday before tapering back on
Tuesday into Wednesday.

.SPOTTER INFORMATION STATEMENT...

$$

Hazardous Weather Outlook
National Weather Service Lake Charles LA
525 AM CDT Wed Aug 23 2017

LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262-
241030-
Vernon-Rapides-Avoyelles-Beauregard-Allen-Evangeline-St. Landry-
Calcasieu-Jefferson Davis-Acadia-Lafayette-Upper St. Martin-
Vermilion-Iberia-St. Mary-Lower St. Martin-West Cameron-
East Cameron-Tyler-Hardin-Jefferson-Orange-Northern Jasper-
Northern Newton-Southern Jasper-Southern Newton-
525 AM CDT Wed Aug 23 2017

This Hazardous Weather Outlook is for portions of central
Louisiana, south central Louisiana, southwest Louisiana, west
central Louisiana, and southeast Texas.

.DAY ONE...Today and Tonight
Looking for showers and thunderstorms to develop this afternoon
continuing into this evening before dissipating. A cold front
moving through southern Arkansas is expected to move into
Louisiana making the coast around sunrise tomorrow.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday
Thursday will see a return of afternoon showers and thunderstorms.
The real change to our weather is Harvey which is in the Bay of
Campeche. The Hurricane Center expects Harvey to reform back into
a cyclone moving off to the northwest and guidance is suggesting
the storm will make landfall along the central Texas coast by
late Friday The system is expected to stall before moving towards
southeast Texas and into southern Louisiana. This is expected to
produce heavy rains over the weekend and into Monday. Rains are
expected to produce flooding in locations across the region. Five
to eight inches of rain is expected with some locations receiving
higher amounts.

.SPOTTER INFORMATION STATEMENT...

$$

Hazardous Weather Outlook
National Weather Service Mobile AL
433 AM CDT Wed Aug 23 2017

ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-241200-
Choctaw-Washington-Clarke-Wilcox-Monroe-Conecuh-Butler-Crenshaw-
Escambia-Covington-Mobile Inland-Baldwin Inland-Mobile Central-
Baldwin Central-Mobile Coastal-Baldwin Coastal-Escambia Inland-
Escambia Coastal-Santa Rosa Inland-Santa Rosa Coastal-
Okaloosa Inland-Okaloosa Coastal-Wayne-Perry-Greene-Stone-George-
433 AM CDT Wed Aug 23 2017

This Hazardous Weather Outlook is for portions of south central
Alabama...southwest Alabama...northwest Florida and southeast
Mississippi.

.DAY ONE...Today and Tonight

Highest heat index values to range from 101 to 105 degrees today.

Storms forecast to develop and become mostly scattered in coverage
through the day today. Some of the storms potentially strong.
Main impacts from storms will be brief strong wind gusts, frequent
lightning and locally heavy rain that may cause instances of
nuisance type flooding in some areas that experience poor
drainage.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

An increase in rip current hazards looks to set up Friday and into
the weekend, as a potential tropical system lifts up across the
western Gulf late in the week, bringing long period swell into the
surf zone. Elevated rip current hazards may linger into the first
half of next week.

There is at least some potential for a heavy rain and or severe
weather event to occur over the forecast area during the Monday
into Tuesday timeframe. This will be highly dependent on eventual
placement of a weak frontal boundary near the area and how the
surface low from Harvey tracks. Stay tuned.

.SPOTTER INFORMATION STATEMENT...

Activation of SkyWarn Severe Storm Spotter networks is not
expected through Tuesday.

$$

Hazardous Weather Outlook
National Weather Service Mobile AL
433 AM CDT Wed Aug 23 2017

GMZ630>635-650-655-670-675-241200-
Northern Mobile Bay-Southern Mobile Bay-Mississippi Sound-
Perdido Bay-Pensacola Bay System-Choctawhatchee Bay-
Coastal waters from Pensacola FL to Pascagoula MS out 20 NM-
Coastal waters from Destin to Pensacola FL out 20 NM-
Waters from Pensacola FL to Pascagoula MS from 20 to 60 NM-
Waters from Destin to Pensacola FL from 20 to 60 NM-
433 AM CDT Wed Aug 23 2017

This Hazardous Weather Outlook is for portions of the coastal
waters of Alabama and northwest Florida.

.DAY ONE...Today and Tonight

Winds, waves and seas locally higher in and near isolated to
scattered storms. Frequent lightning activity and visibility
reducing heavy rainfall will also be likely with the stronger
storms.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Winds, waves and seas locally higher in and near storms during the
outlook. Frequent lightning activity and visibility reducing heavy
rainfall will also be likely with the stronger storms.

A potential tropical system, to lift northwest over the western
Gulf at the close of the week, brings an increase in long period
swell up across the coastal waters Friday and into the weekend.
Increased swell may continue into the first of next week,
depending on eventual track and strength of western Gulf system.

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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