Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 24, NWS Shreveport, LA

March 23, 20214 counties in Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Mar 23, 2021, 1:00 AM CDT for 4 counties in Texas. It was in force for 28 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 23, 2021, 1:00 AM CDT (06:00 UTC)
Expired
Mar 23, 2021, 1:28 AM CDT
In force
28 min
Issued by
NWS Shreveport, LA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Cherokee County, TX, Panola County, TX, Rusk County, TX, Smith County, TX

The radar

The Shreveport radar (KSHV), 84 km from the middle of the area, began a volume at 06:04 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, 6.0 hours before the alert went out and 94 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 2021-03-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2021-03-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 160 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1424 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
160 m²/s²
0-3 km storm-relative helicity
393 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

108 
WUUS54 KSHV 230600
SVRSHV
TXC073-365-401-423-230645-
/O.NEW.KSHV.SV.W.0024.210323T0600Z-210323T0645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
100 AM CDT Tue Mar 23 2021

The National Weather Service in Shreveport has issued a

* Severe Thunderstorm Warning for...
  Southeastern Smith County in northeastern Texas...
  Western Panola County in northeastern Texas...
  Rusk County in northeastern Texas...
  Northern Cherokee County in northeastern Texas...

* Until 145 AM CDT.

* At 1259 AM CDT, severe thunderstorms were located along a line
  extending from near Arp to near Troup to 6 miles north of Maydelle,
  moving east at 40 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Jacksonville, Henderson, Kilgore, Overton, Troup, Tatum, New
  London, Arp, Beckville, Ponta, Pinehill, New Salem, Joinerville,
  Turnertown, Minden, New Summerfield, Mount Enterprise, Gallatin,
  Reklaw and Fairplay.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3186 9536 3209 9513 3237 9513 3237 9463
      3236 9461 3237 9459 3237 9445 3236 9444
      3237 9440 3237 9439 3234 9438 3234 9436
      3187 9462
TIME...MOT...LOC 0559Z 252DEG 37KT 3229 9511 3210 9511 3189 9531 

HAIL...0.75IN
WIND...60MPH
 
$$

44
1 follow-up statement
252 
WWUS54 KSHV 230628
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
128 AM CDT Tue Mar 23 2021

TXC073-365-401-423-230637-
/O.CAN.KSHV.SV.W.0024.000000T0000Z-210323T0645Z/
Smith TX-Panola TX-Rusk TX-Cherokee TX-
128 AM CDT Tue Mar 23 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SMITH...WESTERN
PANOLA...RUSK AND NORTHERN CHEROKEE COUNTIES IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with these thunderstorms.

LAT...LON 3186 9536 3209 9513 3237 9513 3237 9463
      3236 9461 3237 9459 3237 9445 3236 9444
      3237 9440 3237 9439 3234 9438 3234 9436
      3187 9462
TIME...MOT...LOC 0625Z 252DEG 37KT 3238 9480 3219 9480 3198 9500 

$$

44

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 22, 10:15 PM CDTSpecial Weather StatementSHVFranklin, Red River, Titus30 min
Mar 23, 12:18 AM CDTSevere Thunderstorm WarningSHVCherokee, Rusk, Smith42 min
Mar 23, 12:33 AM CDTSpecial Weather StatementSHVGregg, Upshur42 min
Mar 23, 12:58 AM CDTSevere Thunderstorm WarningSHVCamp, Cass, Gregg, Harrison, Marion, Morris and 5 more30 min
Mar 23, 2:55 AM CDTSpecial Weather StatementSHVAngelina50 min
Mar 23, 3:22 AM CDTSpecial Weather StatementSHVPanola38 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.