Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 270, NWS Norman, OK

May 28, 2021Archer County, Clay County, Texas

NWS Norman, OK issued this severe thunderstorm warning at May 28, 2021, 12:46 AM CDT for Archer County, Clay 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: May 28, 2021, 12:46 AM CDT (05:46 UTC)
Expired: May 28, 2021, 1:30 AM CDT
In force: 44 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 2.75 in
Wind: 70.0 mph

Counties Archer County, TX, Clay County, TX

The radar

The Altus AFB radar (KFDR), 102 km from the middle of the area, began a volume at 05:49 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 nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 5.8 hours before the alert went out and 139 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: 1480 J/kg
Mixed-layer CIN: -150 J/kg
Mixed-layer LCL: 1331 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 203 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.7

Open this sounding in Storm Lab

The text

As transmitted.

272 
WUUS54 KOUN 280546
SVROUN
TXC009-077-280630-
/O.NEW.KOUN.SV.W.0270.210528T0546Z-210528T0630Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
1246 AM CDT Fri May 28 2021

The National Weather Service in Norman has issued a

* Severe Thunderstorm Warning for...
  Southwestern Clay County in northern Texas...
  Central Archer County in northern Texas...

* Until 130 AM CDT.

* At 1246 AM CDT, a severe thunderstorm was located 4 miles west of
  Archer City, moving east at 40 mph.

  This is a very dangerous storm.

  HAZARD...Baseball size hail and 70 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be severely injured. 
           Expect shattered windows, extensive damage to roofs, 
           siding, and vehicles.

* Locations impacted include...
  Archer City, Scotland, Windthorst, Lake Kickapoo, southwestern Lake
  Arrowhead, Joy and Shannon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3350 9883 3367 9882 3367 9819 3347 9818
      3347 9842 3342 9842
TIME...MOT...LOC 0546Z 275DEG 36KT 3357 9869 

HAIL...2.75IN
WIND...70MPH
 
$$

30

2 follow-up statements

325 
WWUS54 KOUN 280603
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
103 AM CDT Fri May 28 2021

TXC009-077-280630-
/O.CON.KOUN.SV.W.0270.000000T0000Z-210528T0630Z/
Clay TX-Archer TX-
103 AM CDT Fri May 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM CDT
FOR SOUTHWESTERN CLAY AND SOUTHEASTERN ARCHER COUNTIES...

At 103 AM CDT, a severe thunderstorm was located near Windthorst,
moving east at 40 mph.

HAZARD...Two inch 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...
Archer City, Scotland, Windthorst, southwestern Lake Arrowhead,
Shannon and Joy.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3346 9861 3367 9862 3367 9819 3347 9818
      3347 9842 3342 9842
TIME...MOT...LOC 0603Z 275DEG 36KT 3355 9848 

HAIL...2.00IN
WIND...70MPH
 
$$

30

647 
WWUS54 KOUN 280620
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
120 AM CDT Fri May 28 2021

TXC009-280629-
/O.CAN.KOUN.SV.W.0270.000000T0000Z-210528T0630Z/
Archer TX-
120 AM CDT Fri May 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ARCHER COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3367 9842 3367 9819 3347 9818 3347 9842
TIME...MOT...LOC 0619Z 277DEG 38KT 3350 9826 

$$

TXC077-280630-
/O.CON.KOUN.SV.W.0270.000000T0000Z-210528T0630Z/
Clay TX-
120 AM CDT Fri May 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM CDT
FOR SOUTHWESTERN CLAY COUNTY...

At 119 AM CDT, a severe thunderstorm was located 11 miles southeast
of Windthorst, moving east at 45 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.

Locations impacted include...
Windthorst, southwestern Lake Arrowhead, Shannon and Joy. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3367 9842 3367 9819 3347 9818 3347 9842
TIME...MOT...LOC 0619Z 277DEG 38KT 3350 9826 

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

30

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 7:51 PM CDT	Severe Thunderstorm Warning	OUN	Hardeman	39 min
May 27, 8:26 PM CDT	Severe Thunderstorm Warning	OUN	Hardeman, Wilbarger	49 min
May 27, 8:34 PM CDT	Special Weather Statement	OUN	Foard	26 min
May 27, 9:06 PM CDT	Severe Thunderstorm Warning	OUN	Wilbarger	39 min
May 27, 9:15 PM CDT	Special Weather Statement	OUN	Wilbarger	30 min
May 27, 9:46 PM CDT	Special Weather Statement	OUN	Wilbarger	29 min
May 27, 10:04 PM CDT	Severe Thunderstorm Warning	OUN	Clay, Wichita	41 min
May 27, 10:12 PM CDT	Special Weather Statement	OUN	Wichita	33 min
May 27, 10:34 PM CDT	Severe Thunderstorm Warning	OUN	Clay	41 min
May 27, 10:36 PM CDT	Severe Thunderstorm Warning	OUN	Foard	39 min
May 27, 11:00 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Knox	45 min
May 27, 11:03 PM CDT	Special Weather Statement	OUN	Foard	27 min
May 27, 11:27 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Foard, Knox	48 min
May 28, 12:09 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor	51 min
May 28, 12:13 AM CDT	Special Weather Statement	OUN	Knox	32 min
May 28, 1:29 AM CDT	Special Weather Statement	OUN	Clay	31 min
May 28, 2:13 AM CDT	Special Weather Statement	OUN	Foard	32 min
May 28, 4:55 AM CDT	Special Weather Statement	OUN	Foard, Hardeman	35 min
May 28, 5:24 AM CDT	Special Weather Statement	OUN	Foard, Hardeman	36 min
May 28, 8:14 AM CDT	Special Weather Statement	OUN	Hardeman	31 min
May 28, 8:14 AM CDT	Special Weather Statement	OUN	Wilbarger	31 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.