Severe Thunderstorm Warning 427, NWS Jackson, MS

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Hazardous Weather Outlook
National Weather Service Jackson MS
448 AM CDT Sun Jun 18 2023

ARZ074-075-LAZ007>009-015-016-MSZ018-019-025>052-056>058-182000-
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Bolivar-Sunflower-Leflore-Grenada-Carroll-Montgomery-
Webster-Clay-Lowndes-Choctaw-Oktibbeha-Washington-Humphreys-
Holmes-Attala-Winston-Noxubee-Issaquena-Sharkey-Yazoo-Madison MS-
Leake-Neshoba-Kemper-Warren-Hinds-Rankin-Scott-Newton-Lauderdale-
Smith-Jasper-Clarke-
448 AM CDT Sun Jun 18 2023

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

.DAY ONE...Today and Tonight...

SEVERE THUNDERSTORMS
THREAT...Enhanced
TIMING...Today through Tonight

FLOODING
THREAT...Limited
TIMING...Today through Tonight

Severe thunderstorms are likely . Some thunderstorms may produce
damaging winds up to 70 mph and large hail up to tennis ball
size.  A tornado cannot be ruled out.

(https://www.weather.gov/images/jan/graphicast/1.png)

Localized flash flooding is possible, particularly in low lying
and urban areas. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

Isolated severe thunderstorms are possible for portions of the
outlook area Monday afternoon and evening.

(https://www.weather.gov/images/jan/graphicast/3.png)

Isolated severe thunderstorms are possible again over portions of
the outlook area Tuesday afternoon and evening.

(https://www.weather.gov/images/jan/graphicast/4.png)

Dangerous heat with maximum heat index values of 106 to
110 degrees is expected over southwest portions of the outlook
area again Monday.

(https://www.weather.gov/images/jan/graphicast/5.png)

Dangerous heat with maximum heat index values near 105 degrees is
possible for portions of the outlook area again Monday.

(https://www.weather.gov/images/jan/graphicast/5.png)

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region Tuesday
night and today through Monday night.

LAZ023-025-MSZ053>055-059-061>066-072>074-182000-
Franklin LA-Tensas-Claiborne-Copiah-Simpson-Jefferson-Franklin MS-
Lincoln-Lawrence-Jefferson Davis-Covington-Jones-Marion-Lamar-
Forrest-
448 AM CDT Sun Jun 18 2023

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

.DAY ONE...Today and Tonight...

SEVERE THUNDERSTORMS
THREAT...Enhanced
TIMING...Today through Tonight

FLOODING
THREAT...Limited
TIMING...Today through Tonight

DANGEROUS HEAT
THREAT...Limited
TIMING...Today

Severe thunderstorms are likely . Some thunderstorms may produce
damaging winds up to 70 mph and large hail up to tennis ball
size.  A tornado cannot be ruled out.

(https://www.weather.gov/images/jan/graphicast/1.png)

Localized flash flooding is possible, particularly in low lying
and urban areas. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

Caution is advised for possible dangerous heat as heat index
values peak near 105 degrees. Heat exhaustion will be possible
with outdoor activity.

(https://www.weather.gov/images/jan/graphicast/5.png)

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

Isolated severe thunderstorms are possible for portions of the
outlook area Monday afternoon and evening.

(https://www.weather.gov/images/jan/graphicast/3.png)

Isolated severe thunderstorms are possible again over portions of
the outlook area Tuesday afternoon and evening.

(https://www.weather.gov/images/jan/graphicast/4.png)

Dangerous heat with maximum heat index values of 106 to
110 degrees is expected over southwest portions of the outlook
area again Monday.

(https://www.weather.gov/images/jan/graphicast/5.png)

Dangerous heat with maximum heat index values near 105 degrees is
possible for portions of the outlook area again Monday.

(https://www.weather.gov/images/jan/graphicast/5.png)

.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region Tuesday
night and today through Monday night.

LAZ024-026-MSZ060-182000-
Catahoula-Concordia-Adams-
448 AM CDT Sun Jun 18 2023

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

.DAY ONE...Today and Tonight...

SEVERE THUNDERSTORMS
THREAT...Enhanced
TIMING...Today through Tonight

FLOODING
THREAT...Limited
TIMING...Today through Tonight

DANGEROUS HEAT
THREAT...Elevated
TIMING...Today

Severe thunderstorms are likely . Some thunderstorms may produce
damaging winds up to 70 mph and large hail up to tennis ball
size.  A tornado cannot be ruled out.

(https://www.weather.gov/images/jan/graphicast/1.png)

Localized flash flooding is possible, particularly in low lying
and urban areas. Minor river flooding is also possible.

(https://www.weather.gov/images/jan/graphicast/2.png)

Dangerous heat likely with peak heat index values ranging from
106 to 110 degrees. Heat exhaustion will be likely with outdoor
activity.

(https://www.weather.gov/images/jan/graphicast/5.png)

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

Isolated severe thunderstorms are possible for portions of the
outlook area Monday afternoon and evening.

(https://www.weather.gov/images/jan/graphicast/3.png)

Isolated severe thunderstorms are possible again over portions of
the outlook area Tuesday afternoon and evening.

(https://www.weather.gov/images/jan/graphicast/4.png)

Dangerous heat with maximum heat index values of 106 to
110 degrees is expected over southwest portions of the  outlook
area again Monday.

(https://www.weather.gov/images/jan/graphicast/5.png)

Dangerous heat with maximum heat index values near 105 degrees is
possible for portions of the outlook area again Monday.

(https://www.weather.gov/images/jan/graphicast/5.png)

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region Tuesday
night and today through tonight.

19

&&

...HAZARD LEGEND...

*SEVERE THUNDERSTORMS*
High...Significant severe thunderstorms and tornadoes are
 likely with strong or violent tornadoes possible.
Moderate...Significant severe thunderstorms and tornadoes are
 likely with strong tornadoes possible.
Enhanced...Severe thunderstorms are likely and tornadoes are
 possible.
Slight...Severe thunderstorms and tornadoes are possible.
Marginal...Isolated severe thunderstorms are possible.

*FLOODING*
Extreme...Widespread and significant flooding is likely.
Significant...Widespread flash flooding is likely
 and significant flooding is possible.
Elevated...Areas of flash flooding likely.
Limited...Localized flash flooding is possible.

*DANGEROUS HEAT*
Extreme...Extreme heat is expected with peak heat index values
 in excess of 110 degrees for multiple days. Heat stroke continues
 to be a major concern.
Significant...Dangerous heat expected with peak heat index values
 in excess of 110 degrees. Heat stroke will be a significant
 concern.
Elevated...Dangerous heat likely with peak heat index values
 ranging from 106 to 110 degrees. Heat exhaustion will be likely.
Limited...Caution is advised for possible dangerous heat as
 heat index values peak near 105 degrees. Heat exhaustion will
 be possible.

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

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

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

...ADDITIONAL URLS FOR SEVERE WEATHER ISSUES...

Storm Prediction Center (SPC)...
   https://www.spc.noaa.gov/
Meso Analysis...
   https://www.spc.noaa.gov/exper/mesoanalysis/
Day 1 through 3 Outlooks...
   https://www.spc.noaa.gov/products/outlook/
Storm Reports...
   https://www.spc.noaa.gov/climo/online/
...ADDITIONAL URLS FOR FLOODING ISSUES...

Current Watches and Warnings...
   https://www.weather.gov/jan/safe_HeavyRain

Observed Precipitation Images...
   https://www.weather.gov/jan/precipmaps

River Forecast Center...
   https://www.weather.gov/lmrfc/
Significant River Flood Outlook...
   https://www.wpc.ncep.noaa.gov/nationalfloodoutlook/index.html
Day 1 through 3 Excessive Rainfall...
   https://www.wpc.ncep.noaa.gov/qpf/excess_rain.shtml
Excessive Rainfall Discussion...
   https://www.wpc.ncep.noaa.gov/discussions/qpferd.html
Day 1 through 7 QPF...
   https://www.wpc.ncep.noaa.gov/qpf/qpf2.shtml
QPF Discussion...
   https://www.wpc.ncep.noaa.gov/discussions/qpfpfd.html

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