Alert archive / Texas / Tornado Warnings in 2021
Tornado Warning 11, NWS Norman, OK
NWS Norman, OK issued this tornado warning at Apr 27, 2021, 4:12 PM CDT for 4 counties in Texas. It was in force for 48 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 27, 2021, 4:12 PM CDT (21:12 UTC)
- Expired
- Apr 27, 2021, 5:00 PM CDT
- In force
- 48 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 2.75 in
Counties Baylor County, TX, Foard County, TX, Knox County, TX, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 78 km from the middle of the area, began a volume at 21:16 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 |
|---|---|---|---|
| Apr 27, 1:57 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 9.2 hours before the alert went out and 231 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
- 81 J/kg
- Mixed-layer CIN
- -760 J/kg
- Mixed-layer LCL
- 713 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 221 m²/s²
- 0-3 km storm-relative helicity
- 212 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
508
WFUS54 KOUN 272112
TOROUN
TXC023-155-275-487-272200-
/O.NEW.KOUN.TO.W.0011.210427T2112Z-210427T2200Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Norman OK
412 PM CDT Tue Apr 27 2021
The National Weather Service in Norman has issued a
* Tornado Warning for...
Southeastern Foard County in northern Texas...
Northeastern Knox County in northern Texas...
Southern Wilbarger County in northern Texas...
Northwestern Baylor County in northern Texas...
* Until 500 PM CDT.
* At 412 PM CDT, a severe thunderstorm capable of producing a tornado
was located 5 miles northeast of Gilliland, moving east at 40 mph.
HAZARD...Tornado and baseball size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
Lake Kemp, Mabelle, Grayback and Gilliland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a storm shelter, safe room or an interior
room on the lowest floor of a sturdy building. Avoid windows. If you
are outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.
&&
LAT...LON 3368 9977 3396 9976 3401 9904 3366 9909
TIME...MOT...LOC 2112Z 262DEG 35KT 3380 9964
TORNADO...RADAR INDICATED
HAIL...2.75IN
$$
JT1 follow-up statement
000
WWUS54 KOUN 272136
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
436 PM CDT Tue Apr 27 2021
TXC155-275-272145-
/O.CAN.KOUN.TO.W.0011.000000T0000Z-210427T2200Z/
Foard TX-Knox TX-
436 PM CDT Tue Apr 27 2021
...THE TORNADO WARNING FOR SOUTHEASTERN FOARD AND NORTHEASTERN KNOX
COUNTIES IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of Knox and Foard Counties. Therefore, the warning has been
cancelled for those counties.
LAT...LON 3376 9947 3398 9947 3401 9904 3366 9909
TIME...MOT...LOC 2135Z 256DEG 25KT 3388 9937
$$
TXC023-487-272200-
/O.CON.KOUN.TO.W.0011.000000T0000Z-210427T2200Z/
Wilbarger TX-Baylor TX-
436 PM CDT Tue Apr 27 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR SOUTHERN
WILBARGER AND NORTHWESTERN BAYLOR COUNTIES...
At 435 PM CDT, a severe thunderstorm capable of producing a tornado
was located 11 miles southeast of Thalia, moving east at 30 mph.
Storm spotters have reported three inch hail with this storm.
HAZARD...Tornado and three inch hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Mabelle, Grayback and Lake Kemp.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a storm shelter, safe room, or an interior
room on the lowest floor of a sturdy building. Avoid windows. If you
are outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.
&&
LAT...LON 3376 9947 3398 9947 3401 9904 3366 9909
TIME...MOT...LOC 2135Z 256DEG 25KT 3388 9937
TORNADO...RADAR INDICATED
HAIL...3.00IN
$$
JTThe office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 11:08 AM CDT | Flood Watch | OUN | Archer, Baylor, Clay, Wichita, Wilbarger | 40 hr |
| Apr 27, 3:30 PM CDT | Severe Thunderstorm Warning | OUN | Foard, Knox | 45 min |
| Apr 27, 3:47 PM CDT | Tornado Warning | OUN | Foard, Knox | 28 min |
| Apr 27, 4:55 PM CDT | Tornado Warning | OUN | Wichita, Wilbarger | 39 min |
| Apr 27, 5:30 PM CDT | Severe Thunderstorm Warning | OUN | Wichita, Wilbarger | 45 min |
| Apr 27, 6:01 PM CDT | Severe Thunderstorm Warning | OUN | Wilbarger | 44 min |
| Apr 27, 6:24 PM CDT | Special Weather Statement | OUN | Wilbarger | 36 min |
| Apr 27, 6:32 PM CDT | Severe Thunderstorm Warning | OUN | Baylor, Foard, Knox, Wilbarger | 43 min |
| Apr 27, 6:41 PM CDT | Severe Thunderstorm Warning | OUN | Wichita, Wilbarger | 49 min |
Nearby
Tornado Warnings in Texas, 2021Every tornado warning in 2021Tornadoes 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.