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Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service New Orleans LA
1102 AM CDT Thu Jul 20 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>082-210415-
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-
1102 AM CDT Thu Jul 20 2017

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

.DAY ONE...This Afternoon and Tonight

Isolated showers and thunderstorms are possible today. Any
stronger storm that does develop could produce heavy rainfall and
frequent lightning.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Isolated showers and thunderstorms are once again expected on
Friday. An upper level disturbance is expected to move into the
region over the weekend, bringing an increase in thunderstorm
coverage Saturday and Sunday. Some of the storms may be strong to
marginally severe with the primary threats being damaging wind
gusts and possibly some hail from the stronger storms. Rainfall
could become pronounced at times with some localized street flooding
possible Saturday and Sunday. Thunderstorm coverage should trend
closer to normal Monday through Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

$$

32

Hazardous Weather Outlook
National Weather Service Jackson MS
208 PM CDT Thu Jul 20 2017

LAZ024-MSZ046-049>052-054>058-060>063-211915-
Catahoula-Kemper-Rankin-Scott-Newton-Lauderdale-Copiah-Simpson-
Smith-Jasper-Clarke-Adams-Franklin MS-Lincoln-Lawrence-
208 PM CDT Thu Jul 20 2017

This hazardous weather outlook is for portions of northeast
Louisiana, central Mississippi, east central Mississippi, south
central Mississippi, and southwest Mississippi.

.DAY ONE...Rest of Today

EXCESSIVE HEAT
THREAT...Elevated
TIMING...Through the remainder of this afternoon

Heat stress concerns will continue for the rest of this
afternoon. Maximum temperatures in the mid to upper 90s will
combine with high humidity to produce heat indices of 106 to 110
degrees.

(www.weather.gov/images/jan/graphicast/image1.png)

.DAYS TWO THROUGH SEVEN...Friday night through Wednesday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations is not expected through next Wednesday.

$$

Hazardous Weather Outlook
National Weather Service Jackson MS
208 PM CDT Thu Jul 20 2017

MSZ064>066-072>074-211915-
Jefferson Davis-Covington-Jones-Marion-Lamar-Forrest-
208 PM CDT Thu Jul 20 2017

This hazardous weather outlook is for portions of south central
Mississippi, and southeast Mississippi.

.DAY ONE...Rest of Today

EXCESSIVE HEAT
THREAT...Limited
TIMING...Through the remainder of this afternoon

Heat stress concerns will continue for the rest of this
afternoon. Maximum temperatures in the mid will combine with high
humidity to produce heat indices around 105 degrees.

(www.weather.gov/images/jan/graphicast/image1.png)

.DAYS TWO THROUGH SEVEN...Friday night through Wednesday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations is not expected through next Wednesday.

$$

1

&&

...HAZARD LEGEND...

*EXCESSIVE HEAT*
Extreme...Maximum heat index greater than 110 degrees for 3 or
 more days in a row and/or air temperatures greater than 107
 degrees.
Significant...Maximum heat index greater than 110 degrees
 and/or air temperatures greater than 105 degrees.
Elevated...Maximum heat index 105 to 110 degrees and/or air
 temperatures greater than 103 degrees.
Limited...Maximum heat index near 105 degrees and/or air
 temperatures 100 to 103 degrees.


...USEFUL WEATHER WEB PAGES (URLS)...

NWS JAN Home page...
   www.weather.gov/jan
Stay Aware, Stay Safe NWS JAN Briefing Page...
   www.weather.gov/jan/safe
Latest Weather Briefing...
   www.weather.gov/jan/weather_briefing

Tropical page...
   www.weather.gov/jan/tropical
National Hurricane Center Home Page...
   www.nhc.noaa.gov/
Find NWS JAN on Facebook...
   www.facebook.com/NWSJacksonMS
Follow NWS JAN on Twitter...
   @NWSJacksonMS
Follow NWS JAN on Youtube...
   www.youtube.com/user/NWSJacksonMiss

Hazardous Weather Outlook
National Weather Service Jackson MS
208 PM CDT Thu Jul 20 2017

LAZ026-MSZ028>033-037>039-043>045-048-053-059-211915-
Concordia-Montgomery-Webster-Clay-Lowndes-Choctaw-Oktibbeha-
Attala-Winston-Noxubee-Madison MS-Leake-Neshoba-Hinds-Claiborne-
Jefferson-
208 PM CDT Thu Jul 20 2017

This hazardous weather outlook is for portions of northeast
Louisiana, central Mississippi, east central Mississippi, north
central Mississippi, northeast Mississippi, and southwest
Mississippi.

.DAY ONE...Rest of Today

EXCESSIVE HEAT
THREAT...Elevated
TIMING...Mainly through the rest of this afternoon

Heat stress concerns will continue for the rest of this afternoon.
Maximum temperatures in the mid to upper 90s will combine with
high humidity to produce heat indices of 106 to 110 degrees.

(www.weather.gov/images/jan/graphicast/image1.png)

.DAYS TWO THROUGH SEVEN...Friday night through Wednesday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations is not expected through next Wednesday.

$$

Hazardous Weather Outlook
National Weather Service Shreveport LA
952 AM CDT Thu Jul 20 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>167-211200-
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-
952 AM CDT Thu Jul 20 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...

A Heat Advisory is in effect for today. With temperatures
forecast to climb into the mid to upper 90s and increased low-
level moisture in place, afternoon heat index values will climb to
near 105 degrees. Precautions should be taken to prevent heat
related injuries, including drinking plenty of water while
outdoors.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

An upper level ridge of high pressure will maintain hot
temperatures with a slight chance of afternoon showers and
thunderstorms through the end of this work week. With temperatures
climbing into the mid and possibly upper 90s, afternoon heat
index values will climb to near 105 degrees once again on Friday.
A heat advisory remains in effect through Friday evening. The
ridge of high pressure will weaken this weekend with the approach
of a couple of weak upper level disturbances and an associated
weak cold frontal system, which should result in increasing
chances of scattered showers and thunderstorms, and slightly
cooler temperatures for the weekend into early next week.

.SPOTTER INFORMATION STATEMENT...

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


$$

13

Hazardous Weather Outlook
National Weather Service Mobile AL
551 AM CDT Thu Jul 20 2017

ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-211200-
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-
551 AM CDT Thu Jul 20 2017

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

.DAY ONE...Today and Tonight

Gusty winds, frequent lightning, and locally heavy rains will be
possible with the stronger thunderstorms that develop today into
this evening.

Heat indices of 102 to 107 are expected today, with a few localities
seeing heat indices rising into the 107 to 110 degree range.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Gusty winds, frequent lightning, and locally heavy rains will be
possible with the stronger thunderstorms that develop each day.

Heat indices of 102 to 107 are expected Friday.

.SPOTTER INFORMATION STATEMENT...

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

$$

Hazardous Weather Outlook
National Weather Service Mobile AL
551 AM CDT Thu Jul 20 2017

GMZ630>635-650-655-670-675-211200-
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-
551 AM CDT Thu Jul 20 2017

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

.DAY ONE...Today and Tonight

Isolated thunderstorms have developed over the marine area early
this morning, with more development expected tonight. A few
storms will be capable of producing frequent lightning, gusty
winds and locally higher seas, locally heavy rainfall, and
possibly an isolated waterspout.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Gusty winds, frequent lightning and locally higher seas are
possible with the stronger storms that develop through the
period. Isolated waterspouts will also be possible mainly during
the morning hours.

$$

Hazardous Weather Outlook
National Weather Service Lake Charles LA
428 AM CDT Thu Jul 20 2017

LAZ027>033-041>045-052>055-073-074-TXZ180-201-215-216-259>262-
210930-
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-
428 AM CDT Thu Jul 20 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

Very warm and humid conditions can be expected with afternoon heat
index values between 102 and 107 degrees. Individuals are
encouraged to take precautions to minimize heat-related illnesses
if outside for any prolonged period of time.

Otherwise, isolated to scattered showers and thunderstorms can be
expected, with the best chances expected across the Acadiana
region. Occasional cloud to ground lightning and very heavy
rainfall will be the primary hazards with any thunderstorms.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Very warm and humid conditions are again expected on Friday with
heat index values between 102 and 107. Isolated to scattered
showers and thunderstorms are also expected during the day Friday.

Showers and thunderstorms will increase Saturday and Sunday as an
upper low moves over the region. Storms will be capable of
producing frequent cloud to ground lightning, brief gusty winds
along with very heavy rainfall that could result in localized
flooding of urban and poor drainage areas.

Rain chances will decrease early next week as high pressure begins
to build back over the region aloft.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

Hazardous Weather Outlook
National Weather Service Lake Charles LA
428 AM CDT Thu Jul 20 2017

GMZ430-432-435-450-452-455-470-472-475-210930-
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-
428 AM CDT Thu Jul 20 2017

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

.DAY ONE...Today and Tonight

Isolated to scattered showers and thunderstorms can be expected,
mainly during the late night and early morning hours. Occasional
cloud to water lightning, locally higher winds and seas and very
heavy rainfall reducing visibility to less than one mile will be
the main hazards with the storms.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Isolated to scattered showers and thunderstorms can be expected
again on Friday, mainly during the late night into early morning
hours. Showers and thunderstorms will increase Saturday and Sunday
as an upper level low moves over the Gulf of Mexico. Storms will
be capable of producing frequent cloud to water lightning and locally
higher winds and seas as well as very heavy rainfall reducing
visibility to less than one mile.

Rain chances will decrease early next week as high pressure begins
to build back over the region aloft.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

24

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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