Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 95, NWS Norman, OK

April 23, 2021Foard County, Hardeman County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Apr 23, 2021, 4:44 PM CDT for Foard County, Hardeman County, Texas. It was in force for 46 min. 3 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, 4:44 PM CDT (21:44 UTC)
Expired: Apr 23, 2021, 5:30 PM CDT
In force: 46 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.5 in
Wind: 70.0 mph

Counties Foard County, TX, Hardeman County, TX

The radar

The Altus AFB radar (KFDR), 91 km from the middle of the area, began a volume at 21:45 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
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

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, 9.7 hours before the alert went out and 196 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.

874 
WUUS54 KOUN 232144
SVROUN
TXC155-197-232230-
/O.NEW.KOUN.SV.W.0095.210423T2144Z-210423T2230Z/

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

The National Weather Service in Norman has issued a

* Severe Thunderstorm Warning for...
  Northwestern Foard County in northern Texas...
  Southwestern Hardeman County in northern Texas...

* Until 530 PM CDT.

* At 444 PM CDT, a severe thunderstorm was located 6 miles north of
  Swearingen, moving east at 30 mph.

  HAZARD...70 mph wind gusts and ping pong ball size hail.

  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...
  Quanah, Crowell, Goodlett, Copper Breaks State Park and Lazare. 

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 3423 10005 3424 10003 3424 10001 3423 10000
      3435 10000 3437 9968 3396 9968 3408 10005
TIME...MOT...LOC 2144Z 273DEG 27KT 3423 10011 

HAIL...1.50IN
WIND...70MPH
 
$$

Ware

1 follow-up statement

243 
WWUS54 KOUN 232155
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
455 PM CDT Fri Apr 23 2021

TXC155-197-232230-
/O.CON.KOUN.SV.W.0095.000000T0000Z-210423T2230Z/
Foard TX-Hardeman TX-
455 PM CDT Fri Apr 23 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTHWESTERN FOARD AND SOUTHWESTERN HARDEMAN COUNTIES...

At 454 PM CDT, a severe thunderstorm was located 9 miles northeast 
of Swearingen, moving east at 30 mph. Spotters have reported ping-
pong ball sized hail 6 miles north-northeast of Swearingen.

HAZARD...70 mph wind gusts and ping pong ball size hail.

SOURCE...Trained weather spotters.

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...
Quanah, Crowell, Goodlett, Copper Breaks State Park and Lazare. 

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 3423 10005 3424 10003 3424 10001 3423 10000
      3435 10000 3437 9968 3396 9968 3408 10005
TIME...MOT...LOC 2154Z 273DEG 27KT 3423 10002 

HAIL...1.50IN
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, 4:52 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, 5:28 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman	47 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.