Alert archive / Texas / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 721, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Sep 8, 2020, 5:30 PM CDT for Baylor County, Wilbarger County, Texas. It was in force for 45 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
- Sep 8, 2020, 5:30 PM CDT (22:30 UTC)
- Expired
- Sep 8, 2020, 6:15 PM CDT
- In force
- 45 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Baylor County, TX, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 65 km from the middle of the area, began a volume at 22:29 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 12:00Z, 10.5 hours before the alert went out and 208 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
- 407 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 1258 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -46 m²/s²
- 0-3 km storm-relative helicity
- -11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
976
WUUS54 KOUN 082230
SVROUN
TXC023-487-082315-
/O.NEW.KOUN.SV.W.0721.200908T2230Z-200908T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
530 PM CDT Tue Sep 8 2020
The National Weather Service in Norman has issued a
* Severe Thunderstorm Warning for...
Southeastern Wilbarger County in northern Texas...
Northern Baylor County in northern Texas...
* Until 615 PM CDT.
* At 530 PM CDT, severe thunderstorms were located along a line
extending from 12 miles southwest of Grayback to 3 miles west of
Lake Kemp to 3 miles northwest of Seymour, moving northeast at 25
mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Lake Kemp, Harrold, Grayback and Lake Diversion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3359 9935 3370 9936 3385 9942 3411 9905
3403 9895 3378 9895
TIME...MOT...LOC 2230Z 223DEG 23KT 3385 9933 3376 9929 3363 9931
HAIL...<.75IN
WIND...60MPH
$$
Mahale2 follow-up statements
819
WWUS54 KOUN 082250
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
550 PM CDT Tue Sep 8 2020
TXC023-487-082315-
/O.CON.KOUN.SV.W.0721.000000T0000Z-200908T2315Z/
Wilbarger TX-Baylor TX-
550 PM CDT Tue Sep 8 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR SOUTHEASTERN WILBARGER AND NORTHEASTERN BAYLOR COUNTIES...
At 550 PM CDT, severe thunderstorms were located along a line
extending from 5 miles southwest of Grayback to 7 miles northeast of
Lake Kemp to 4 miles north of Seymour, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Lake Kemp, Harrold, Grayback and Lake Diversion.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3359 9935 3378 9935 3391 9934 3411 9905
3403 9895 3378 9895
TIME...MOT...LOC 2250Z 267DEG 24KT 3394 9925 3386 9917 3365 9929
HAIL...<.75IN
WIND...60MPH
$$
Mahale294
WWUS54 KOUN 082312
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
612 PM CDT Tue Sep 8 2020
TXC023-487-082322-
/O.EXP.KOUN.SV.W.0721.000000T0000Z-200908T2315Z/
Wilbarger TX-Baylor TX-
612 PM CDT Tue Sep 8 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WILBARGER AND
NORTHEASTERN BAYLOR COUNTIES WILL EXPIRE AT 615 PM CDT...
The storms which prompted the warning have weakened below severe
limits, therefore the warning will be allowed to expire. However
gusty winds are still possible with these thunderstorms.
LAT...LON 3359 9935 3378 9935 3391 9934 3411 9905
3403 9895 3378 9895
TIME...MOT...LOC 2312Z 223DEG 23KT 3403 9914 3395 9906 3374 9919
$$
MahaleThe office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 3:21 PM CDT | Special Weather Statement | OUN | Foard | 24 min |
| Sep 8, 4:11 PM CDT | Special Weather Statement | OUN | Foard | 34 min |
| Sep 8, 4:20 PM CDT | Areal Flood Advisory | OUN | Foard, Knox | 3 hr |
| Sep 8, 4:33 PM CDT | Special Weather Statement | OUN | Foard | 27 min |
| Sep 8, 4:37 PM CDT | Severe Thunderstorm Warning | OUN | Foard | 23 min |
| Sep 8, 5:01 PM CDT | Areal Flood Advisory | OUN | Foard, Hardeman, Wilbarger | 3 hr |
| Sep 8, 5:19 PM CDT | Special Weather Statement | OUN | Wilbarger | 26 min |
| Sep 8, 6:18 PM CDT | Special Weather Statement | OUN | Wichita, Wilbarger | 42 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2020Every severe thunderstorm warning in 2020
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.