Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 92, NWS Shreveport, LA

April 10, 20214 counties in Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 10, 2021, 3:04 AM CDT for 4 counties in Texas. It was in force for 56 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 10, 2021, 3:04 AM CDT (08:04 UTC)
Expired
Apr 10, 2021, 4:00 AM CDT
In force
56 min
Issued by
NWS Shreveport, LA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Angelina County, TX, Nacogdoches County, TX, Sabine County, TX, San Augustine County, TX

The radar

The Ft Polk radar (KPOE), 86 km from the middle of the area, began a volume at 08:08 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 10, 12:52 AM CDTSevere Thunderstorm WatchSPC3 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 8.1 hours before the alert went out and 138 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 2021-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 148 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 2021-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 329 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
148 J/kg
Mixed-layer CIN
-321 J/kg
Mixed-layer LCL
2441 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
329 m²/s²
0-3 km storm-relative helicity
421 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

617 
WUUS54 KSHV 100804
SVRSHV
TXC005-347-403-405-100900-
/O.NEW.KSHV.SV.W.0092.210410T0804Z-210410T0900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
304 AM CDT Sat Apr 10 2021

The National Weather Service in Shreveport has issued a

* Severe Thunderstorm Warning for...
  Eastern Nacogdoches County in eastern Texas...
  Southeastern Angelina County in eastern Texas...
  San Augustine County in eastern Texas...
  Sabine County in eastern Texas...

* Until 400 AM CDT.

* At 303 AM CDT, a severe thunderstorm was located near Macune, or 24
  miles north of Ebenezer, moving southeast at 45 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Milam, Hemphill, Pineland, Macune, Rosevine, Broaddus, Bronson,
  McElroy, Denning, Fairmount, Yellowpine and Chinaquapin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Shreveport.

&&

LAT...LON 3134 9440 3153 9425 3134 9367 3131 9369
      3128 9365 3127 9364 3127 9362 3124 9362
      3123 9360 3121 9361 3118 9360 3116 9391
      3114 9404 3112 9404 3111 9406 3110 9414
TIME...MOT...LOC 0803Z 302DEG 37KT 3138 9421 

HAIL...1.00IN
WIND...60MPH
 
$$

13
1 follow-up statement
422 
WWUS54 KSHV 100826
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
326 AM CDT Sat Apr 10 2021

TXC347-100835-
/O.CAN.KSHV.SV.W.0092.000000T0000Z-210410T0900Z/
Nacogdoches TX-
326 AM CDT Sat Apr 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN NACOGDOCHES COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
northwestern Louisiana...and eastern Texas.

LAT...LON 3126 9422 3145 9412 3134 9367 3131 9369
      3128 9365 3127 9364 3127 9362 3124 9362
      3123 9360 3121 9361 3118 9360 3116 9391
      3114 9404 3112 9404 3111 9406 3110 9414
TIME...MOT...LOC 0825Z 309DEG 29KT 3127 9407 

$$

TXC005-403-405-100900-
/O.CON.KSHV.SV.W.0092.000000T0000Z-210410T0900Z/
Angelina TX-San Augustine TX-Sabine TX-
326 AM CDT Sat Apr 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 AM CDT
FOR SOUTHEASTERN ANGELINA...SOUTHEASTERN SAN AUGUSTINE AND SABINE
COUNTIES...

At 325 AM CDT, a severe thunderstorm was located near Pineland, or 16
miles north of Ebenezer, moving southeast at 35 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Hemphill, Pineland, Rosevine, Bronson, McElroy, Fairmount, Yellowpine
and Chinaquapin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Shreveport.

&&

LAT...LON 3126 9422 3145 9412 3134 9367 3131 9369
      3128 9365 3127 9364 3127 9362 3124 9362
      3123 9360 3121 9361 3118 9360 3116 9391
      3114 9404 3112 9404 3111 9406 3110 9414
TIME...MOT...LOC 0825Z 309DEG 29KT 3127 9407 

HAIL...1.50IN
WIND...60MPH
 
$$

13

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 7:05 PM CDTSpecial Weather StatementSHVNacogdoches40 min
Apr 9, 7:07 PM CDTSpecial Weather StatementSHVGregg53 min
Apr 9, 7:11 PM CDTSevere Thunderstorm WarningSHVGregg, Harrison, Rusk27 min
Apr 9, 7:35 PM CDTSpecial Weather StatementSHVShelby40 min
Apr 9, 8:08 PM CDTSevere Thunderstorm WarningSHVAngelina, Nacogdoches, San Augustine42 min
Apr 9, 8:36 PM CDTSpecial Weather StatementSHVPanola, Shelby54 min
Apr 9, 10:02 PM CDTSevere Thunderstorm WarningSHVCherokee, Nacogdoches, Rusk58 min
Apr 9, 10:48 PM CDTSevere Thunderstorm WarningSHVBowie, Red River42 min
Apr 9, 10:50 PM CDTSevere Thunderstorm WarningSHVNacogdoches, Rusk, San Augustine, Shelby55 min
Apr 9, 11:12 PM CDTSpecial Weather StatementSHVCamp, Cass, Franklin, Morris, Titus48 min
Apr 9, 11:18 PM CDTSevere Thunderstorm WarningSHVBowie42 min
Apr 9, 11:42 PM CDTSevere Thunderstorm WarningSHVCamp, Cass, Franklin, Gregg, Harrison, Marion and 3 more63 min
Apr 9, 11:47 PM CDTSevere Thunderstorm WarningSHVCamp, Franklin, Gregg, Smith, Upshur, Wood43 min
Apr 10, 1:05 AM CDTSpecial Weather StatementSHVHarrison40 min
Apr 10, 1:28 AM CDTSpecial Weather StatementSHVCherokee47 min
Apr 10, 1:54 AM CDTSpecial Weather StatementSHVNacogdoches51 min
Apr 10, 1:55 AM CDTSpecial Weather StatementSHVShelby50 min
Apr 10, 2:07 AM CDTSpecial Weather StatementSHVAngelina38 min
Apr 10, 2:38 AM CDTSpecial Weather StatementSHVSan Augustine52 min
Apr 10, 2:50 AM CDTSpecial Weather StatementSHVSan Augustine40 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021Every severe thunderstorm warning 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.