Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Shreveport, LA

May 4, 2021Rusk County, Texas

NWS Shreveport, LA issued this special weather statement at May 4, 2021, 5:13 AM CDT for Rusk County, Texas. It was in force for 32 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 4, 2021, 5:13 AM CDT (10:13 UTC)
Expired
May 4, 2021, 5:45 AM CDT
In force
32 min
Issued by
NWS Shreveport, LA

County Rusk County, TX

The radar

The Shreveport radar (KSHV), 83 km from the middle of the area, began a volume at 10:15 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

Shreveport, LA (KSHV), launched 00:00Z, 10.2 hours before the alert went out and 92 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 00:00Z on 2021-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2938 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 00:00Z on 2021-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.19395878Sfc1 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
2938 J/kg
Mixed-layer CIN
-99 J/kg
Mixed-layer LCL
1253 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.5

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 4, 4:14 AM CDT, 59 minutes earlier.

Area forecast discussion, May 4, 4:14 AM CDT, 59 minutes before
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Hazardous weather outlook, May 4, 4:48 AM CDT, 25 minutes before
Hazardous Weather Outlook
National Weather Service Shreveport LA
448 AM CDT Tue May 4 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>167-051000-
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-
448 AM CDT Tue May 4 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...Today and Tonight...

Showers and thunderstorms will redevelop along a boundary
situated from deep east Texas to southwest Arkansas and progress
southeast through the day Tuesday. Storm activity is expected to
remain south of the I-30 corridor. The primary threats associated
with these storms are expected to be damaging winds, large hail,
and locally heavy rainfall. An isolated tornado or two cannot be
ruled out.

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

No hazardous weather is expected through the remainder of the work
week, until thunderstorms chances return this weekend.

.SPOTTER INFORMATION STATEMENT...

Activation of emergency management personnel...amateur radio
operators...and storm spotters may be needed for today. Please
relay any information about observed severe weather to the NWS
while following all local, state, and CDC guidelines.

In the hours before

Local storm report, May 4, 3:19 AM CDT, 1 hour 54 minutes before
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Local storm report, May 4, 3:26 AM CDT, 1 hour 47 minutes before
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Local storm report, May 4, 3:38 AM CDT, 1 hour 35 minutes before
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Local storm report, May 4, 3:46 AM CDT, 1 hour 27 minutes before
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Special weather statement, May 4, 4:54 AM CDT, 19 minutes before
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Special weather statement, May 4, 5:13 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 3, 10:55 PM CDTSevere Thunderstorm WarningSHVCamp, Franklin, Red River, Smith, Titus, Upshur and 1 more65 min
May 3, 11:44 PM CDTSevere Thunderstorm WarningSHVBowie, Camp, Cass, Marion, Morris, Red River and 2 more61 min
May 4, 12:34 AM CDTSevere Thunderstorm WarningSHVBowie41 min
May 4, 1:10 AM CDTSevere Thunderstorm WarningSHVGregg, Smith, Upshur, Wood50 min
May 4, 4:54 AM CDTSpecial Weather StatementSHVGregg, Harrison51 min
May 4, 10:15 AM CDTSpecial Weather StatementSHVAngelina, Nacogdoches45 min
May 4, 10:15 AM CDTSpecial Weather StatementSHVHarrison30 min
May 4, 10:40 AM CDTSpecial Weather StatementSHVNacogdoches, San Augustine, Shelby50 min
May 4, 11:07 AM CDTSevere Thunderstorm WarningSHVPanola, Shelby38 min
May 4, 10:44 AM CDTSpecial Weather StatementSHVBossier, Caddo46 min
May 4, 10:54 AM CDTSpecial Weather StatementSHVCaddo66 min
May 4, 11:10 AM CDTSevere Thunderstorm WarningSHVBienville, Bossier, Caddo, De Soto, Webster50 min
May 4, 11:14 AM CDTSevere Thunderstorm WarningSHVBossier, Caddo, De Soto31 min
May 4, 11:24 AM CDTSevere Thunderstorm WarningSHVBienville, Claiborne, Jackson, Lincoln51 min
May 4, 11:45 AM CDTSpecial Weather StatementSHVNatchitoches45 min
May 4, 11:48 AM CDTSpecial Weather StatementSHVOuachita42 min
May 4, 12:05 PM CDTSevere Thunderstorm WarningSHVBienville, De Soto, Natchitoches, Red River, Sabine40 min
May 4, 12:17 PM CDTSevere Thunderstorm WarningSHVNatchitoches, Sabine43 min
May 4, 12:25 PM CDTSevere Thunderstorm WarningSHVBienville, Jackson, Lincoln, Ouachita, Union65 min
May 4, 12:28 PM CDTSevere Thunderstorm WarningSHVCaldwell, Jackson, Ouachita, Union, Winn47 min
May 4, 12:41 PM CDTSevere Thunderstorm WarningSHVBienville, Jackson, Natchitoches, Winn64 min
May 4, 12:48 PM CDTSevere Thunderstorm WarningSHVGrant, LaSalle, Winn57 min
May 4, 12:53 PM CDTSevere Thunderstorm WarningSHVCaldwell, Jackson, LaSalle52 min
May 3, 11:59 PM CDTSpecial Weather StatementSHVSevier61 min
May 4, 12:25 AM CDTSevere Thunderstorm WarningSHVHoward, Little River, Sevier34 min
May 4, 1:19 AM CDTSpecial Weather StatementSHVHempstead, Nevada41 min
May 3, 9:27 PM CDTSpecial Weather StatementSHVMcCurtain48 min
May 3, 10:09 PM CDTSevere Thunderstorm WarningSHVMcCurtain36 min

Nearby

Special Weather Statements in Texas, 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.