Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 210, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at May 17, 2021, 6:39 PM CDT for Tillman County, Oklahoma; Foard County, Hardeman County, Wilbarger County, Texas. It was in force for 12 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
- May 17, 2021, 6:39 PM CDT (23:39 UTC)
- Expired
- May 17, 2021, 6:51 PM CDT
- In force
- 12 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Tillman County, OK, Foard County, TX, Hardeman County, TX, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 48 km from the middle of the area, began a volume at 23:43 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 17, 4:44 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 11.7 hours before the alert went out and 242 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
- 2 J/kg
- Mixed-layer CIN
- -203 J/kg
- Mixed-layer LCL
- 1295 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
060
WUUS54 KOUN 172339
SVROUN
OKC141-TXC155-197-487-180030-
/O.NEW.KOUN.SV.W.0210.210517T2339Z-210518T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
639 PM CDT Mon May 17 2021
The National Weather Service in Norman has issued a
* Severe Thunderstorm Warning for...
Southwestern Tillman County in southwestern Oklahoma...
East central Foard County in northern Texas...
Wilbarger County in northern Texas...
Southeastern Hardeman County in northern Texas...
* Until 730 PM CDT.
* At 639 PM CDT, a severe thunderstorm was located near Thalia,
moving northeast at 30 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...
Vernon, Thalia, Oklaunion, Lockett, Fargo and Rayland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3412 9957 3434 9923 3434 9921 3413 9903
3391 9944 3389 9953 3403 9965
TIME...MOT...LOC 2339Z 233DEG 25KT 3401 9952
HAIL...1.00IN
WIND...60MPH
$$
JT2 follow-up statements
540
WWUS54 KOUN 172346
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
646 PM CDT Mon May 17 2021
OKC141-TXC155-197-487-180030-
/O.CON.KOUN.SV.W.0210.000000T0000Z-210518T0030Z/
Tillman OK-Foard TX-Wilbarger TX-Hardeman TX-
646 PM CDT Mon May 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR SOUTHWESTERN TILLMAN...EAST CENTRAL FOARD...WILBARGER AND
SOUTHEASTERN HARDEMAN COUNTIES...
At 646 PM CDT, a severe thunderstorm was located 5 miles northeast of
Thalia, moving northeast at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Vernon, Thalia, Oklaunion, Lockett, Fargo and Rayland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A tornado watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3412 9957 3434 9923 3434 9921 3413 9903
3393 9945 3393 9951 3403 9962
TIME...MOT...LOC 2346Z 233DEG 25KT 3404 9947
HAIL...1.00IN
WIND...60MPH
$$
JT191
WWUS54 KOUN 172351
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
651 PM CDT Mon May 17 2021
OKC141-TXC155-197-487-180000-
/O.CAN.KOUN.SV.W.0210.000000T0000Z-210518T0030Z/
Tillman OK-Foard TX-Wilbarger TX-Hardeman TX-
651 PM CDT Mon May 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN TILLMAN...EAST
CENTRAL FOARD...WILBARGER AND SOUTHEASTERN HARDEMAN COUNTIES IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, therefore the warning has been cancelled.
LAT...LON 3412 9957 3434 9923 3434 9921 3413 9903
3393 9945 3393 9951 3403 9962
TIME...MOT...LOC 2349Z 233DEG 25KT 3406 9944
$$
JTThe office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 7:09 PM CDT | Special Weather Statement | OUN | Marshall | 36 min |
| May 16, 7:46 PM CDT | Special Weather Statement | OUN | Marshall | 29 min |
| May 16, 8:06 PM CDT | River Flood Advisory | OUN | Pottawatomie, Seminole | 16 hr |
| May 16, 8:06 PM CDT | River Flood Advisory | OUN | Atoka | 24 hr |
| May 16, 8:21 PM CDT | Areal Flood Warning | OUN | Jefferson, Stephens | 4 hr |
| May 16, 9:56 PM CDT | Areal Flood Warning | OUN | Jefferson | 3 hr |
| May 16, 9:59 PM CDT | Severe Thunderstorm Warning | OUN | Harmon, Jackson | 76 min |
| May 16, 11:44 PM CDT | Special Weather Statement | OUN | Tillman | 31 min |
| May 17, 12:14 AM CDT | Severe Thunderstorm Warning | OUN | Tillman | 38 min |
| May 17, 12:15 AM CDT | Special Weather Statement | OUN | Tillman | 30 min |
| May 17, 12:29 AM CDT | Severe Thunderstorm Warning | OUN | Comanche, Kiowa, Tillman | 22 min |
| May 17, 12:55 AM CDT | Special Weather Statement | OUN | Comanche, Cotton, Tillman | 35 min |
| May 17, 1:28 AM CDT | Special Weather Statement | OUN | Cotton, Grady, Jefferson, Stephens | 32 min |
| May 17, 2:01 AM CDT | Special Weather Statement | OUN | Jefferson, Stephens | 29 min |
| May 17, 12:39 PM CDT | River Flood Advisory | OUN | Comanche, Cotton | 20 hr |
| May 17, 2:27 PM CDT | River Flood Advisory | OUN | Cotton | 18 hr |
| May 16, 7:23 PM CDT | Severe Thunderstorm Warning | OUN | Clay | 52 min |
| May 16, 7:42 PM CDT | Special Weather Statement | OUN | Foard | 33 min |
| May 16, 7:56 PM CDT | Severe Thunderstorm Warning | OUN | Foard | 16 min |
| May 16, 8:10 PM CDT | Severe Thunderstorm Warning | OUN | Clay | 65 min |
| May 16, 8:52 PM CDT | Areal Flood Advisory | OUN | Clay | 3 hr |
| May 16, 9:04 PM CDT | Severe Thunderstorm Warning | OUN | Clay | 56 min |
| May 16, 9:22 PM CDT | Special Weather Statement | OUN | Archer | 23 min |
| May 16, 9:29 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Clay | 61 min |
| May 16, 10:31 PM CDT | Severe Thunderstorm Warning | OUN | Knox | 44 min |
| May 16, 11:06 PM CDT | Severe Thunderstorm Warning | OUN | Baylor, Knox | 39 min |
| May 16, 11:13 PM CDT | Special Weather Statement | OUN | Foard, Knox | 32 min |
| May 16, 11:32 PM CDT | Severe Thunderstorm Warning | OUN | Baylor, Foard, Knox, Wilbarger | 58 min |
| May 16, 11:38 PM CDT | Severe Thunderstorm Warning | OUN | Baylor | 52 min |
| May 17, 12:25 AM CDT | Areal Flood Advisory | OUN | Baylor, Foard, Knox, Wilbarger | 3 hr |
| May 17, 2:25 PM CDT | River Flood Advisory | OUN | Wichita, Wilbarger | 18 hr |
| May 17, 5:13 PM CDT | Special Weather Statement | OUN | Knox | 32 min |
| May 17, 5:45 PM CDT | Special Weather Statement | OUN | Knox | 30 min |
| May 17, 6:05 PM CDT | Special Weather Statement | OUN | Foard | 40 min |
| May 17, 6:18 PM CDT | Special Weather Statement | OUN | Foard | 42 min |
| May 17, 6:23 PM CDT | Severe Thunderstorm Warning | OUN | Knox | 67 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2021Severe Thunderstorm Warnings in Oklahoma, 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.