Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 13, NWS Norman, OK

March 12, 2021Foard County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Mar 12, 2021, 9:16 PM CST for Foard County, Texas. It was in force for 44 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: Mar 12, 2021, 9:16 PM CST (03:16 UTC)
Expired: Mar 12, 2021, 10:00 PM CST
In force: 44 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Foard County, TX

The radar

The Altus AFB radar (KFDR), 103 km from the middle of the area, began a volume at 03:18 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
Mar 12, 8:38 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 3.3 hours before the alert went out and 207 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 566 m above ground
0-6 km bulk shear: 92 kt
0-1 km storm-relative helicity: 384 m²/s²
0-3 km storm-relative helicity: 512 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

929 
WUUS54 KOUN 130316
SVROUN
TXC155-130400-
/O.NEW.KOUN.SV.W.0013.210313T0316Z-210313T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
916 PM CST Fri Mar 12 2021

The National Weather Service in Norman has issued a

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

* Until 1000 PM CST.

* At 916 PM CST, a severe thunderstorm was located 5 miles northeast
  of Chalk, moving east at 15 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  southwestern Foard County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3409 10005 3410 9992 3384 9991 3384 10004
      3405 10005
TIME...MOT...LOC 0316Z 255DEG 12KT 3392 10015 

HAIL...1.50IN
WIND...60MPH
 
$$

Mahale

2 follow-up statements

653 
WWUS54 KOUN 130333
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
933 PM CST Fri Mar 12 2021

TXC155-130400-
/O.CON.KOUN.SV.W.0013.000000T0000Z-210313T0400Z/
Foard TX-
933 PM CST Fri Mar 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CST
FOR SOUTHWESTERN FOARD COUNTY...

At 933 PM CST, a severe thunderstorm was located 10 miles northeast
of Chalk, moving east at 15 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.

This severe thunderstorm will remain over mainly rural areas of
southwestern Foard County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3409 10005 3410 9992 3384 9991 3384 10004
      3405 10005
TIME...MOT...LOC 0333Z 249DEG 13KT 3395 10008 

HAIL...1.00IN
WIND...60MPH
 
$$

Mahale

965 
WWUS54 KOUN 130359
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
959 PM CST Fri Mar 12 2021

TXC155-130409-
/O.EXP.KOUN.SV.W.0013.000000T0000Z-210313T0400Z/
Foard TX-
959 PM CST Fri Mar 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN FOARD COUNTY WILL
EXPIRE AT 1000 PM CST...
                 
The storm which prompted the warning has weakened below severe
limits, therefore the warning will be allowed to expire.  However
heavy rain is still possible with this thunderstorm.

LAT...LON 3409 10005 3410 9992 3384 9991 3384 10004
      3405 10005
TIME...MOT...LOC 0359Z 255DEG 12KT 3397 9998 

$$

Mahale

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.