Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 42, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Mar 31, 2021, 1:38 AM CDT for 5 counties in Texas. It was in force for 52 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 31, 2021, 1:38 AM CDT (06:38 UTC)
- Expired
- Mar 31, 2021, 2:30 AM CDT
- In force
- 52 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Bowie County, TX, Cass County, TX, Morris County, TX, Red River County, TX, Titus County, TX
The radar
The Shreveport radar (KSHV), 122 km from the middle of the area, began a volume at 06:39 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, 6.6 hours before the alert went out and 125 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.
- Mixed-layer CAPE
- 1017 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 909 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 7.1
The text
As transmitted.
251
WUUS54 KSHV 310638
SVRSHV
TXC037-067-343-387-449-310730-
/O.NEW.KSHV.SV.W.0042.210331T0638Z-210331T0730Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Shreveport LA
138 AM CDT Wed Mar 31 2021
The National Weather Service in Shreveport has issued a
* Severe Thunderstorm Warning for...
Northern Cass County in northeastern Texas...
Southern Bowie County in northeastern Texas...
Northern Morris County in northeastern Texas...
Northeastern Titus County in northeastern Texas...
Southeastern Red River County in northeastern Texas...
* Until 230 AM CDT.
* At 137 AM CDT, a severe thunderstorm was located near Us 259 And I
30 Intersection, or 9 miles south of Boxelder, moving east at 40
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...
New Boston, Boxelder, Hooks, De Kalb, Naples, Redwater, Maud, Red
Lick, Us 259 And I 30 Intersection, Dalby Springs, Leary,
Douglassville, Spring Hill, Lydia, Red Bank and Bryans Mill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3321 9493 3348 9493 3353 9418 3320 9418
TIME...MOT...LOC 0637Z 268DEG 36KT 3334 9482
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$
441 follow-up statement
027
WWUS54 KSHV 310655
SVSSHV
Severe Weather Statement
National Weather Service Shreveport LA
155 AM CDT Wed Mar 31 2021
TXC343-387-449-310705-
/O.CAN.KSHV.SV.W.0042.000000T0000Z-210331T0730Z/
Morris TX-Titus TX-Red River TX-
155 AM CDT Wed Mar 31 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN MORRIS...NORTHEASTERN
TITUS AND SOUTHEASTERN RED RIVER COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3353 9418 3320 9418 3321 9465 3328 9466
3330 9469 3331 9469 3331 9473 3333 9475
3349 9475
TIME...MOT...LOC 0655Z 268DEG 36KT 3335 9460
$$
TXC037-067-310730-
/O.CON.KSHV.SV.W.0042.000000T0000Z-210331T0730Z/
Cass TX-Bowie TX-
155 AM CDT Wed Mar 31 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM CDT
FOR NORTHERN CASS AND SOUTHERN BOWIE COUNTIES...
At 155 AM CDT, a severe thunderstorm was located near Dalby Springs,
or 13 miles southwest of New Boston, moving east at 40 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...
New Boston, Hooks, De Kalb, Redwater, Maud, Red Lick, Dalby Springs,
Leary, Douglassville, Spring Hill, Red Bank and Bryans Mill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3353 9418 3320 9418 3321 9465 3328 9466
3330 9469 3331 9469 3331 9473 3333 9475
3349 9475
TIME...MOT...LOC 0655Z 268DEG 36KT 3335 9460
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$
44The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 1:18 AM CDT | Special Weather Statement | SHV | Titus | 42 min |
| Mar 31, 2:47 AM CDT | Severe Thunderstorm Warning | SHV | Bowie, Cass | 43 min |
| Mar 31, 3:27 AM CDT | Lake Wind Advisory | SHV | Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more | 16 hr |
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.