Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS Jackson, MS

March 16, 2021West Carroll Parish, Louisiana

NWS Jackson, MS issued this special weather statement at Mar 16, 2021, 3:57 PM CDT for West Carroll Parish, Louisiana. It was in force for 48 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: Mar 16, 2021, 3:57 PM CDT (20:57 UTC)
Expired: Mar 16, 2021, 4:45 PM CDT
In force: 48 min
Issued by: NWS Jackson, MS

County West Carroll Parish, LA

The radar

The Jackson/Brandon,MS radar (KDGX), 144 km from the middle of the area, began a volume at 20:57 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, 9.0 hours before the alert went out and 134 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 812 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 660 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

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 Mar 16, 3:48 PM CDT, 9 minutes earlier.

Area forecast discussion, Mar 16, 3:48 PM CDT, 9 minutes before

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Hazardous weather outlook, Mar 16, 3:57 PM CDT, 0 minutes before

Hazardous Weather Outlook
National Weather Service Jackson MS
357 PM CDT Tue Mar 16 2021

ARZ074-075-LAZ007>009-015-016-023>025-MSZ018-019-025>059-063>066-
172100-
Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland-
Madison LA-Franklin LA-Catahoula-Tensas-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-Claiborne-Copiah-Simpson-Smith-Jasper-
Clarke-Jefferson-Lawrence-Jefferson Davis-Covington-Jones-
357 PM CDT Tue Mar 16 2021

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

.DAY ONE...Tonight and Wednesday

SEVERE THUNDERSTORMS
THREAT...Moderate
TIMING...Mainly Wednesday

Severe thunderstorms, capable of damaging wind gusts, hail to golf
ball size, and tornadoes, are possible tonight through early
Wednesday morning. The greatest severe weather potential through
early Wednesday morning will be across portions of northwest
Mississippi, northeast Louisiana, and southeast Arkansas.

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

On Wednesday afternoon and evening, multiple rounds of severe
weather are expected, with the potential for significant severe
weather including strong long track tornadoes, hail up to baseball
size, and damaging wind gusts.

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

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

Severe thunderstorms will continue into Wednesday evening, before
tapering off overnight.

(https://www.weather.gov/images/jan/graphicast/3.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 tonight
through Wednesday night.

LAZ026-MSZ060>062-072>074-172100-
Concordia-Adams-Franklin MS-Lincoln-Marion-Lamar-Forrest-
357 PM CDT Tue Mar 16 2021

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

.DAY ONE...Tonight and Wednesday

SEVERE THUNDERSTORMS
THREAT...Marginal This Afternoon and Enhanced Wednesday
TIMING...Mainly Wednesday

Isolated severe thunderstorms, capable of damaging wind gusts and
hail up to quarter size, are possible through this evening.

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

On Wednesday afternoon and evening, multiple rounds of severe
weather are expected, with the potential for significant severe
weather including strong tornadoes, golfball size hail, and
damaging wind gusts.

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

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

Severe thunderstorms will continue into Wednesday evening, before
tapering off overnight.

(https://www.weather.gov/images/jan/graphicast/3.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 tonight
through Wednesday night.

DL

&&

...HAZARD LEGEND...

*SEVERE THUNDERSTORMS*
High...Significant severe thunderstorms are expected.
Moderate...Severe storms expected with significant
 severe weather possible.
Enhanced...Severe storms expected.
Slight...Severe storms possible.
Marginal...Isolated severe storms 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

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/

In the hours before

Local storm report, Mar 16, 12:40 PM CDT, 3 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1240 PM CDT TUE MAR 16 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1200 PM     FLASH FLOOD      3 SE CARMICHAEL         31.91N 88.55W
03/16/2021                   CLARKE             MS   EMERGENCY MNGR

            WATER ACROSS CR 621 PER EM.

&&

LP

Local storm report, Mar 16, 12:43 PM CDT, 3 hours 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
1243 PM CDT TUE MAR 16 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1215 PM     FLASH FLOOD      TAYLORSVILLE            31.83N 89.43W
03/16/2021                   SMITH              MS   PUBLIC

            AROUND A FOOT OF WATER ACROSS THE ROADWAY AT
            THE INTERSECTION OF PINE AND FRONT STREETS.

&&

LP

Local storm report, Mar 16, 1:13 PM CDT, 2 hours 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSON MS
113 PM CDT TUE MAR 16 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1220 PM     FLASH FLOOD      1 SW TAYLORSVILLE       31.82N 89.45W
03/16/2021                   SMITH              MS   EMERGENCY MNGR

            PART OF CR 21 WAS UNDER WATER.

&&

CE

Special weather statement, Mar 16, 2:22 PM CDT, 1 hour 35 minutes before

Special Weather Statement
National Weather Service Jackson MS
222 PM CDT Tue Mar 16 2021

LAZ023-024-162015-
Catahoula LA-Franklin LA-
222 PM CDT Tue Mar 16 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN CATAHOULA AND
SOUTHWESTERN FRANKLIN PARISHES UNTIL 315 PM CDT...

At 222 PM CDT, Meteorologists were tracking a strong thunderstorm
near Jena, or 23 miles south of Columbia, moving northeast at 45 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Aimwell around 230 PM CDT.
  Rosefield around 235 PM CDT.
  Sherwood around 240 PM CDT.
  Enterprise around 245 PM CDT.

Other locations impacted by this storm include Harrisonburg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3193 9201 3193 9190 3197 9190 3197 9189
      3203 9190 3207 9193 3209 9187 3212 9187
      3214 9190 3217 9187 3188 9162 3166 9201
TIME...MOT...LOC 1922Z 235DEG 39KT 3177 9211

TW

Special weather statement, Mar 16, 3:13 PM CDT, 44 minutes before

Special Weather Statement
National Weather Service Jackson MS
313 PM CDT Tue Mar 16 2021

LAZ023-162100-
Franklin LA-
313 PM CDT Tue Mar 16 2021

...A STRONG THUNDERSTORM WILL AFFECT FRANKLIN PARISH UNTIL 400 PM
CDT...

At 313 PM CDT, Meteorologists were tracking a strong thunderstorm
near Jigger, or 7 miles southwest of Winnsboro, moving northeast at
35 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Winnsboro around 325 PM CDT.
  Crowville around 340 PM CDT.

Other locations impacted by this storm include Gilbert and Baskin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3209 9187 3215 9190 3217 9188 3218 9184
      3224 9177 3233 9176 3234 9170 3237 9170
      3240 9164 3230 9152 3225 9152 3225 9156
      3223 9154 3224 9151 3220 9154 3220 9149
      3210 9151 3208 9149 3194 9179 3208 9193
TIME...MOT...LOC 2013Z 226DEG 31KT 3207 9180

TW

Special weather statement, Mar 16, 3:57 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 15, 7:23 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Scott	38 min
Mar 15, 11:39 PM CDT	Special Weather Statement	JAN	Carroll, Leflore	36 min
Mar 15, 11:53 PM CDT	Severe Thunderstorm Warning	JAN	Grenada, Montgomery, Webster	36 min
Mar 16, 2:54 AM CDT	Flash Flood Warning	JAN	Clarke	6 hr
Mar 16, 6:52 AM CDT	Special Weather Statement	JAN	Jasper	38 min
Mar 16, 10:18 AM CDT	Flash Flood Warning	JAN	Clarke, Jasper	3 hr
Mar 16, 11:08 AM CDT	Flash Flood Warning	JAN	Covington, Jones, Smith	3 hr
Mar 16, 11:49 AM CDT	Flash Flood Watch	JAN	Clarke, Covington, Jasper, Jefferson Davis, Jones, Lauderdale and 4 more	7 hr
Mar 16, 2:40 PM CDT	River Flood Warning	JAN	Jones	5 days
Mar 16, 4:50 PM CDT	Severe Thunderstorm Warning	JAN	Issaquena	40 min
Mar 16, 4:57 PM CDT	Special Weather Statement	JAN	Rankin	33 min
Mar 16, 4:58 PM CDT	Special Weather Statement	JAN	Winston	32 min
Mar 16, 5:17 PM CDT	Severe Thunderstorm Warning	JAN	Washington	43 min
Mar 16, 5:29 PM CDT	Special Weather Statement	JAN	Rankin	31 min
Mar 16, 6:34 PM CDT	Special Weather Statement	JAN	Copiah	26 min
Mar 16, 6:45 PM CDT	Severe Thunderstorm Warning	JAN	Copiah	60 min
Mar 16, 6:59 PM CDT	Special Weather Statement	JAN	Attala	46 min
Mar 16, 2:22 PM CDT	Special Weather Statement	JAN	Catahoula	53 min
Mar 16, 3:13 PM CDT	Special Weather Statement	JAN	Franklin	47 min
Mar 16, 3:27 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Madison	48 min
Mar 16, 4:16 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll, Madison, Richland, West Carroll	59 min

Nearby

Special Weather Statements in Louisiana, 2021 Every 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.