Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 98, NWS Norman, OK

April 23, 2021Foard County, Hardeman County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Apr 23, 2021, 5:28 PM CDT for Foard County, Hardeman County, Texas. It was in force for 47 min. 7 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 23, 2021, 5:28 PM CDT (22:28 UTC)
Expired: Apr 23, 2021, 6:15 PM CDT
In force: 47 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Tornado: Possible
Hail: 1.75 in
Wind: 70.0 mph

Counties Foard County, TX, Hardeman County, TX

The radar

The Altus AFB radar (KFDR), 78 km from the middle of the area, began a volume at 22:28 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.

What was reported inside it

Time	Report	Where	Remark
Apr 23, 5:29 PM CDT	HAIL 1.75	4 Ssw Quanah, TX
Apr 23, 5:32 PM CDT	HAIL 1	6 S Quanah, TX
Apr 23, 5:35 PM CDT	HAIL 1.5	5 S Quanah, TX
Apr 23, 5:41 PM CDT	HAIL 0.25	4 Wnw Medicine Mound, TX
Apr 23, 5:43 PM CDT	TORNADO	11 S Quanah, TX	ONGOING AS OF 2247UTC, PER PHONE REPORT
Apr 23, 5:54 PM CDT	TORNADO	5 Nne Margaret, TX
Apr 23, 6:05 PM CDT	HAIL 3.37	10 S Quanah, TX	1/4 MI N HURST WILLIAMS RD HWY 6

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 23, 3:14 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 10.5 hours before the alert went out and 214 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1968 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 245 m²/s²
0-3 km storm-relative helicity: 248 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

728 
WUUS54 KOUN 232228
SVROUN
TXC155-197-232315-
/O.NEW.KOUN.SV.W.0098.210423T2228Z-210423T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
528 PM CDT Fri Apr 23 2021

The National Weather Service in Norman has issued a

* Severe Thunderstorm Warning for...
  Central Foard County in northern Texas...
  Southern Hardeman County in northern Texas...

* Until 615 PM CDT.

* At 528 PM CDT, a severe thunderstorm was located 11 miles southwest
  of Quanah, moving southeast at 25 mph.

  HAZARD...Golf ball size hail and 70 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           considerable tree damage. Wind damage is also likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Crowell, Chillicothe, Margaret, Medicine Mound and Copper Breaks
  State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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

&&

LAT...LON 3409 9996 3425 9987 3426 9950 3394 9961
TIME...MOT...LOC 2228Z 296DEG 22KT 3414 9984 

TORNADO...POSSIBLE
HAIL...1.75IN
WIND...70MPH
 
$$

Ware

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 23, 1:58 PM CDT	Special Weather Statement	OUN	Clay	47 min
Apr 23, 4:44 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman	46 min
Apr 23, 4:52 PM CDT	Special Weather Statement	OUN	Foard	38 min
Apr 23, 5:17 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Knox	43 min
Apr 23, 5:23 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Knox	52 min
Apr 23, 5:40 PM CDT	Tornado Warning	OUN	Foard, Hardeman	39 min
Apr 23, 5:52 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Foard, Wilbarger	38 min
Apr 23, 5:59 PM CDT	Tornado Warning Tornado observed	OUN	Foard, Hardeman, Wilbarger	46 min
Apr 23, 6:08 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita	52 min
Apr 23, 6:18 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	OUN	Foard, Hardeman, Wilbarger	42 min
Apr 23, 6:43 PM CDT	Tornado Warning Tornado observed	OUN	Wilbarger	32 min
Apr 23, 6:57 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Wichita	19 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.