Alert archive / Texas / Special Weather Statements in 2023

Special Weather Statement, NWS Shreveport, LA

April 28, 2023Nacogdoches County, Texas

NWS Shreveport, LA issued this special weather statement at Apr 28, 2023, 7:21 PM CDT for Nacogdoches County, Texas. It was in force for 24 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
Apr 28, 2023, 7:21 PM CDT (00:21 UTC)
Expired
Apr 28, 2023, 7:45 PM CDT
In force
24 min
Issued by
NWS Shreveport, LA
Hail
0.50 in
Wind
40

County Nacogdoches County, TX

The radar

The Shreveport radar (KSHV), 138 km from the middle of the area, began a volume at 00:25 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

Fort Worth, TX (KFWD), launched 00:00Z, 0.4 hours before the alert went out and 271 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, Fort Worth, TX at 00:00Z on 2023-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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, Fort Worth, TX at 00:00Z on 2023-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -75 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
762 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
-75 m²/s²
0-3 km storm-relative helicity
255 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

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 Apr 28, 3:02 PM CDT, 4 hours 19 minutes earlier.

Area forecast discussion, Apr 28, 3:02 PM CDT, 4 hours 19 minutes before
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Hazardous weather outlook, Apr 28, 10:55 AM CDT, 8 hours 26 minutes before
Hazardous Weather Outlook
National Weather Service Shreveport LA
1055 AM CDT Fri Apr 28 2023

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-291200-
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-
1055 AM CDT Fri Apr 28 2023

This Hazardous Weather Outlook is for 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 return to portions of Northeast Texas,
Southeast Oklahoma and Southwest Arkansas late this afternoon but
more likely this evening into the overnight hours. The atmosphere
will become unstable enough such that strong to severe thunderstorms,
capable of producing large hail and damaging wind gusts will become
possible across mainly Northeast Texas. Thunderstorms will likely
wait until the late night hours across portions of South Central
Arkansas and Northwest and North Central Louisiana but any severe
thunderstorms this far east would be isolated at best. While an
isolated tornado threat cannot be ruled out across Northeast Texas
late this evening, large hail and damaging wind gusts will be the
primary threat. In addition, rainfall amounts nearing one inch with
isolated higher amounts will be possible across Northeast Texas,
Southeast Oklahoma and adjacent counties in Southwest Arkansas.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Scattered showers and thunderstorms will be possible on Saturday with
the upper level storm system itself before the precipitation comes to
an end Saturday Night. Dry weather will round out Sunday and much of
the new work week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed late this afternoon into
this evening across mainly Northeast Texas.

13

In the hours before

Special weather statement, Apr 28, 6:58 PM CDT, 23 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 28, 7:03 PM CDTSpecial Weather StatementSHVRed River27 min
Apr 28, 7:27 PM CDTSpecial Weather StatementSHVCamp48 min
Apr 28, 7:31 PM CDTSpecial Weather StatementSHVRed River44 min
Apr 28, 8:09 PM CDTSpecial Weather StatementSHVAngelina51 min
Apr 28, 8:43 PM CDTSpecial Weather StatementSHVSan Augustine32 min
Apr 28, 9:25 PM CDTSpecial Weather StatementSHVMarion35 min
Apr 28, 9:33 PM CDTSevere Thunderstorm WarningSHVHarrison, Marion31 min
Apr 28, 10:00 PM CDTSpecial Weather StatementSHVMarion30 min
Apr 28, 10:10 PM CDTSpecial Weather StatementSHVNatchitoches, Red River35 min
Apr 29, 5:47 AM CDTSpecial Weather StatementSHVBossier28 min
Apr 29, 6:09 AM CDTSpecial Weather StatementSHVColumbia36 min
Apr 28, 7:29 PM CDTSpecial Weather StatementSHVMcCurtain46 min

Nearby

Special Weather Statements in Texas, 2023Every special weather statement in 2023

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.