Alert archive / Mississippi / Special Weather Statements in 2021

Special Weather Statement, NWS Jackson, MS

July 19, 2021Lauderdale County, Mississippi

NWS Jackson, MS issued this special weather statement at Jul 19, 2021, 7:15 AM CDT for Lauderdale County, Mississippi. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 19, 2021, 7:15 AM CDT (12:15 UTC)
Expired
Jul 19, 2021, 8:00 AM CDT
In force
45 min
Issued by
NWS Jackson, MS

County Lauderdale County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 127 km from the middle of the area, began a volume at 12:15 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 0.3 hours before the alert went out and 136 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Jackson, MS at 12:00Z on 2021-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1706 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jackson, MS at 12:00Z on 2021-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1706 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
608 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jackson, MS wrote its last area forecast discussion before this special weather statement went out at Jul 19, 6:37 AM CDT, 38 minutes earlier.

Area forecast discussion, Jul 19, 6:37 AM CDT, 38 minutes before
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Hazardous weather outlook, Jul 19, 3:10 AM CDT, 4 hours 5 minutes before
Hazardous Weather Outlook
National Weather Service Jackson MS
310 AM CDT Mon Jul 19 2021

ARZ074-075-LAZ007>009-015-016-023-025-MSZ019-034>053-055>058-
200815-
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Franklin LA-Tensas-Sunflower-Washington-Humphreys-
Holmes-Attala-Winston-Noxubee-Issaquena-Sharkey-Yazoo-Madison MS-
Leake-Neshoba-Kemper-Warren-Hinds-Rankin-Scott-Newton-Lauderdale-
Claiborne-Simpson-Smith-Jasper-Clarke-
310 AM CDT Mon Jul 19 2021

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

.DAY ONE...Today and Tonight

FLOODING
THREAT...Limited
TIMING...Through midday

Slow moving showers and thunderstorms early today may produce
localized rainfall amounts of 3-5 inches. As a result, localized
flash flooding especially in urban and low lying areas.

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

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

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 Sunday.

LAZ024-026-MSZ018-025>033-054-059>066-072>074-200815-
Catahoula-Concordia-Bolivar-Leflore-Grenada-Carroll-Montgomery-
Webster-Clay-Lowndes-Choctaw-Oktibbeha-Copiah-Jefferson-Adams-
Franklin MS-Lincoln-Lawrence-Jefferson Davis-Covington-Jones-
Marion-Lamar-Forrest-
310 AM CDT Mon Jul 19 2021

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

.DAY ONE...Today and Tonight

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

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 Sunday.

DL

&&

...HAZARD LEGEND...

*FLOODING*
Extreme...Confident in significant flooding.
Significant...Significant flooding possible.
Elevated...Confident in flooding.
Limited...Flooding 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 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

In the hours before

Special weather statement, Jul 19, 3:18 AM CDT, 3 hours 57 minutes before
Special Weather Statement
National Weather Service Jackson MS
318 AM CDT Mon Jul 19 2021

MSZ034-035-041-190915-
Washington MS-Sharkey MS-Humphreys MS-
318 AM CDT Mon Jul 19 2021

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN WASHINGTON...
SOUTHWESTERN HUMPHREYS AND NORTHERN SHARKEY COUNTIES THROUGH 415 AM
CDT...

At 317 AM CDT, Meteorologists were tracking a strong thunderstorm
near Hollandale, moving southeast at 25 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Hollandale, Anguilla, Darlove, Panther Burn, Estill, Nitta Yuma,
Midnight, Murphy, Delta City and Louise.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.

&&

LAT...LON 3308 9049 3292 9064 3292 9066 3284 9076
      3282 9076 3281 9074 3280 9075 3297 9092
      3301 9091 3301 9095 3311 9105 3327 9084
TIME...MOT...LOC 0817Z 308DEG 22KT 3312 9088

DL
Special weather statement, Jul 19, 4:01 AM CDT, 3 hours 14 minutes before
Special Weather Statement
National Weather Service Jackson MS
401 AM CDT Mon Jul 19 2021

MSZ035-042-191000-
Humphreys MS-Yazoo MS-
401 AM CDT Mon Jul 19 2021

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL YAZOO AND SOUTHEASTERN
HUMPHREYS COUNTIES UNTIL 500 AM CDT...

At 401 AM CDT, Meteorologists were tracking a strong thunderstorm 7
miles northwest of Yazoo City, moving southeast at 40 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Yazoo City, Benton, Myrleville, Little Yazoo, Vaughan and Eden.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.

&&

LAT...LON 3303 9038 3301 9037 3301 9036 3283 9000
      3282 9002 3275 9004 3270 9010 3270 9013
      3269 9014 3268 9018 3267 9020 3266 9028
      3264 9029 3264 9031 3290 9068 3292 9066
      3292 9064 3308 9049
TIME...MOT...LOC 0901Z 300DEG 33KT 3293 9051

DL
Special weather statement, Jul 19, 4:44 AM CDT, 2 hours 31 minutes before
Special Weather Statement
National Weather Service Jackson MS
444 AM CDT Mon Jul 19 2021

MSZ045-046-051-052-191045-
Kemper MS-Lauderdale MS-Newton MS-Neshoba MS-
444 AM CDT Mon Jul 19 2021

...STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN NEWTON...SOUTHERN
KEMPER...SOUTHEASTERN NESHOBA AND NORTHERN LAUDERDALE COUNTIES
THROUGH 545 AM CDT...

At 443 AM CDT, Meteorologists were tracking a cluster of strong
thunderstorms near Duffee, or 16 miles northwest of Meridian, moving
east at 25 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations impacted include...
Lauderdale, Meridian, Meridian Station, Marion, Blackwater, Herbert
Springs, Tamola, Damascus, House, Martin, Toomsuba, Prismatic,
Suqualena, Kewanee, Alamucha, Daleville, Duffee and Little Rock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may
lead to localized flooding. Do not drive your vehicle through
flooded roadways.

&&

LAT...LON 3234 8842 3245 8910 3267 8903 3264 8838
TIME...MOT...LOC 0943Z 277DEG 20KT 3253 8893

DL
Local storm report, Jul 19, 6:15 AM CDT, 1 hour before
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Local storm report, Jul 19, 6:16 AM CDT, 59 minutes before
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Special weather statement, Jul 19, 7:15 AM CDT, 0 minutes before
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The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 18, 7:56 PM CDTSpecial Weather StatementJANSimpson49 min
Jul 19, 3:18 AM CDTSpecial Weather StatementJANSharkey57 min
Jul 19, 4:01 AM CDTSpecial Weather StatementJANYazoo59 min
Jul 19, 4:15 AM CDTFlash Flood WarningJANWashington3 hr
Jul 19, 4:44 AM CDTSpecial Weather StatementJANLauderdale61 min
Jul 19, 5:07 AM CDTFlash Flood WarningJANKemper, Lauderdale, Neshoba, Newton3 hr
Jul 19, 9:00 AM CDTFlash Flood WarningJANScott2 hr
Jul 19, 9:30 AM CDTRiver Flood WarningJANLeake4 days
Jul 19, 9:53 AM CDTRiver Flood WarningJANClarke4 days
Jul 19, 2:49 PM CDTSpecial Weather StatementJANLincoln26 min
Jul 19, 12:15 PM CDTSpecial Weather StatementJANTensas45 min

Nearby

Special Weather Statements in Mississippi, 2021Every special weather statement in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.