Alert archive / Arkansas / Special Weather Statements in 2021

Special Weather Statement, NWS Shreveport, LA

May 9, 2021Howard County, Arkansas

NWS Shreveport, LA issued this special weather statement at May 9, 2021, 2:55 PM CDT for Howard County, Arkansas. It was in force for 50 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
May 9, 2021, 2:55 PM CDT (19:55 UTC)
Expired
May 9, 2021, 3:45 PM CDT
In force
50 min
Issued by
NWS Shreveport, LA

County Howard County, AR

The radar

The Western Arkansas radar (KSRX), 136 km from the middle of the area, began a volume at 19:56 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

Shreveport, LA (KSHV), launched 12:00Z, 7.9 hours before the alert went out and 184 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, Shreveport, LA at 12:00Z on 2021-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 853 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, Shreveport, LA at 12:00Z on 2021-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 288 square meters per square second.1939587897Sfc1 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
853 J/kg
Mixed-layer CIN
-220 J/kg
Mixed-layer LCL
639 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
288 m²/s²
0-3 km storm-relative helicity
490 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

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 Shreveport, LA wrote its last area forecast discussion before this special weather statement went out at May 9, 1:28 PM CDT, 1 hour 27 minutes earlier.

Area forecast discussion, May 9, 1:28 PM CDT, 1 hour 27 minutes before
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Hazardous weather outlook, May 9, 12:02 PM CDT, 2 hours 53 minutes before
Hazardous Weather Outlook
National Weather Service Shreveport LA
1202 PM CDT Sun May 9 2021

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-
TXZ096-097-108>112-124>126-136>138-149>153-165>167-101100-
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-
1202 PM CDT Sun May 9 2021

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...

Showers and thunderstorms will increase this afternoon across the
region, near and ahead of a cold front that will enter Northeast
Texas and Southwest Arkansas. The threat for severe weather will
increase as well for much of the region, with damaging winds,
large hail, and an isolated tornado or two possible. Locally heavy
rainfall will also be possible in the stronger storms, which may
lead to localized flash flooding. These storms should gradually
diminish across East Texas and North Louisiana late this evening
and overnight.

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

As the cold front continues to shift south into Lower East Texas
and North Louisiana south of the Interstate 20 corridor late
tonight, it should stall Monday over portions of Deep East Texas
and Central Louisiana, with overrunning atop the shallow front
contributing to additional periods of showers and a few
thunderstorms across the region through Wednesday. Periods of
moderate to heavy rainfall will be possible, especially Tuesday
and Tuesday night, which may lead to localized flooding. Isolated
strong storms also can not be ruled out, with hail and locally
gusty winds possible.

.SPOTTER INFORMATION STATEMENT...

Activation of emergency management personnel...amateur radio
operators...and storm spotters will be needed this afternoon and
evening.

15

In the hours before

Special weather statement, May 9, 12:30 PM CDT, 2 hours 25 minutes before
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Local storm report, May 9, 1:23 PM CDT, 1 hour 32 minutes before
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Special weather statement, May 9, 1:24 PM CDT, 1 hour 31 minutes before
Special Weather Statement
National Weather Service Shreveport LA
124 PM CDT Sun May 9 2021

ARZ072-073-LAZ003-004-091915-
Union AR-Columbia AR-Claiborne LA-Webster LA-
124 PM CDT Sun May 9 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN UNION AND
SOUTHEASTERN COLUMBIA COUNTIES...NORTHWESTERN WEBSTER AND
NORTHWESTERN CLAIBORNE PARISHES UNTIL 215 PM CDT...

At 124 PM CDT, Doppler radar was tracking a strong thunderstorm near
Sarepta, or 7 miles southeast of Springhill, moving east at 40 mph.

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

Locations impacted include...
Springhill, Homer, Haynesville, Cullen, Cotton Valley, Sarepta,
Shongaloo, Atlanta, Evergreen, Lisbon, Hew Hope, Leton and Antioch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
south central and southwestern Arkansas...and northwestern Louisiana.

LAT...LON 3276 9288 3281 9346 3283 9346 3285 9347
      3286 9345 3287 9345 3287 9346 3289 9348
      3291 9348 3290 9347 3292 9347 3293 9348
      3299 9349 3311 9289
TIME...MOT...LOC 1824Z 266DEG 37KT 3291 9339

33
Local storm report, May 9, 1:50 PM CDT, 1 hour 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
150 PM CDT SUN MAY 9 2021

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

1258 PM     HAIL             QUITMAN                 32.35N 92.72W
05/09/2021  M1.00 INCH       JACKSON            LA   BROADCAST MEDIA

&&

25
Special weather statement, May 9, 2:55 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Shreveport LA
255 PM CDT Sun May 9 2021

ARZ050-051-060-092045-
Howard AR-Hempstead AR-Sevier AR-
255 PM CDT Sun May 9 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL HEMPSTEAD...
NORTHEASTERN SEVIER AND NORTHEASTERN HOWARD COUNTIES UNTIL 345 PM
CDT...

At 254 PM CDT, Doppler radar was tracking a strong thunderstorm near
Dierks, moving east at 25 mph.

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

Locations impacted include...
Nashville, Dierks, Corinth, Center Point, Muddy Fork, Lebanon and
Burg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
southwestern Arkansas.

LAT...LON 3424 9392 3419 9392 3418 9382 3401 9382
      3401 9377 3392 9375 3410 9414 3426 9410
TIME...MOT...LOC 1954Z 285DEG 21KT 3416 9405

33
Special weather statement, May 9, 2:55 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Shreveport LA
255 PM CDT Sun May 9 2021

ARZ061-092045-
Nevada AR-
255 PM CDT Sun May 9 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL NEVADA COUNTY UNTIL 345
PM CDT...

At 255 PM CDT, Doppler radar was tracking a strong thunderstorm near
Prescott, moving east at 25 mph.

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

Locations impacted include...
Prescott, Bluff City, White Oak Lake State Park, Morris, Laneburg,
Boughton and Reader.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
southwestern Arkansas.

LAT...LON 3384 9329 3384 9326 3383 9326 3383 9323
      3382 9322 3382 9320 3380 9318 3382 9314
      3379 9313 3378 9310 3366 9311 3367 9341
      3385 9342 3387 9330
TIME...MOT...LOC 1955Z 265DEG 21KT 3377 9333

33

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 9, 3:30 PM CDTSpecial Weather StatementSHVNacogdoches45 min
May 9, 3:56 PM CDTSevere Thunderstorm WarningSHVCherokee, Nacogdoches64 min
May 9, 3:59 PM CDTSevere Thunderstorm WarningSHVCherokee42 min
May 9, 4:26 PM CDTSevere Thunderstorm WarningSHVNacogdoches, San Augustine64 min
May 9, 4:50 PM CDTFlash Flood WarningSHVAngelina, Cherokee, Nacogdoches, San Augustine, Shelby12 hr
May 9, 5:09 PM CDTSpecial Weather StatementSHVWood66 min
May 9, 5:18 PM CDTSpecial Weather StatementSHVAngelina57 min
May 9, 5:28 PM CDTSevere Thunderstorm WarningSHVAngelina, Cherokee, Nacogdoches, Sabine, San Augustine62 min
May 9, 6:23 PM CDTSevere Thunderstorm WarningSHVAngelina, Sabine, San Augustine67 min
May 9, 6:58 PM CDTFlash Flood WarningSHVAngelina, Nacogdoches, Sabine, San Augustine, Shelby10 hr
May 9, 12:30 PM CDTSpecial Weather StatementSHVBienville, Jackson45 min
May 9, 12:56 PM CDTSevere Thunderstorm WarningSHVJackson, Lincoln, Ouachita49 min
May 9, 1:24 PM CDTSpecial Weather StatementSHVClaiborne51 min
May 9, 6:02 PM CDTSpecial Weather StatementSHVJackson58 min
May 9, 6:31 PM CDTSpecial Weather StatementSHVOuachita44 min
May 9, 2:55 PM CDTSpecial Weather StatementSHVNevada50 min
May 9, 3:23 PM CDTSevere Thunderstorm WarningSHVHoward37 min
May 9, 3:56 PM CDTSpecial Weather StatementSHVLittle River49 min
May 9, 4:07 PM CDTSevere Thunderstorm WarningSHVHempstead, Howard, Little River, Sevier38 min
May 9, 4:26 PM CDTSpecial Weather StatementSHVNevada49 min
May 9, 4:44 PM CDTSpecial Weather StatementSHVHempstead46 min
May 9, 4:49 PM CDTSpecial Weather StatementSHVColumbia, Lafayette41 min
May 9, 4:59 PM CDTSevere Thunderstorm WarningSHVHempstead, Nevada46 min
May 9, 5:05 PM CDTSevere Thunderstorm WarningSHVNevada55 min
May 9, 5:59 PM CDTSpecial Weather StatementSHVNevada46 min
May 9, 6:47 PM CDTSpecial Weather StatementSHVColumbia, Lafayette58 min
May 9, 4:07 AM CDTSpecial Weather StatementSHVMcCurtain38 min

Nearby

Special Weather Statements in Arkansas, 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.