Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 49, NWS Norman, OK

April 2, 20125 counties in Texas

NWS Norman, OK issued this severe thunderstorm warning at Apr 2, 2012, 8:23 PM CDT for 5 counties in Texas. It was in force for 52 min. 1 report 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 2, 2012, 8:23 PM CDT (01:23 UTC)
Expired: Apr 2, 2012, 9:15 PM CDT
In force: 52 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Baylor County, TX, Foard County, TX, Hardeman County, TX, Knox County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 70 km from the middle of the area, began a volume at 01:24 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 2, 8:35 PM CDT	HAIL 1	Goodlett, 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 2, 3:37 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 1.4 hours before the alert went out and 233 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: 4474 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 99 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

974 
WUUS54 KOUN 030123
SVROUN
TXC023-155-197-275-487-030215-
/O.NEW.KOUN.SV.W.0049.120403T0123Z-120403T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
823 PM CDT MON APR 2 2012

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BAYLOR COUNTY IN NORTH CENTRAL TEXAS...
  FOARD COUNTY IN NORTH CENTRAL TEXAS...
  HARDEMAN COUNTY IN NORTH CENTRAL TEXAS...
  KNOX COUNTY IN NORTH CENTRAL TEXAS...
  WILBARGER COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 915 PM CDT

* AT 820 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING LARGE DAMAGING 
  HAIL UP TO TWO INCHES IN DIAMETER AND DESTRUCTIVE WINDS IN EXCESS 
  OF 70 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 
  37 MILES SOUTH OF LAZARE TO 18 MILES SOUTH OF TRUSCOTT TO 9 MILES 
  NORTHWEST OF KNOX CITY...MOVING NORTHEAST AT 35 MPH. 

* LOCATIONS IMPACTED INCLUDE...
  VERNON...QUANAH...SEYMOUR...CROWELL...CHILLICOTHE...
  MEDICINE MOUND...GOREE...BENJAMIN...GOODLETT...FARGO...GRAYBACK...
  LOCKETT...ODELL...MARGARET...THALIA...GILLILAND...RHINELAND...
  TRUSCOTT...
  VERA AND BOMARTON. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE INSIDE A STURDY BUILDING UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3342 9998 3374 9982 3439 9998 3438 9963
      3437 9962 3438 9961 3437 9931 3419 9921
      3351 9904
TIME...MOT...LOC 0120Z 224DEG 32KT 3422 9994 3377 9980 3351 9993 

$$

WR

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 2, 7:28 PM CDT	Special Weather Statement	OUN	Baylor	32 min
Apr 2, 8:13 PM CDT	Special Weather Statement	OUN	Foard, Hardeman, Knox	17 min
Apr 2, 9:15 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Foard, Hardeman, Knox, Wichita and 1 more	75 min
Apr 2, 10:27 PM CDT	Severe Thunderstorm Warning	OUN	Wichita, Wilbarger	63 min
Apr 2, 10:29 PM CDT	Special Weather Statement	OUN	Archer	46 min
Apr 2, 11:15 PM CDT	Special Weather Statement	OUN	Archer	60 min
Apr 2, 11:47 PM CDT	Special Weather Statement	OUN	Wilbarger	28 min
Apr 2, 11:52 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman, Wilbarger	38 min
Apr 3, 12:34 AM CDT	Special Weather Statement	OUN	Wilbarger	41 min
Apr 3, 12:49 AM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman, Wilbarger	56 min
Apr 3, 1:39 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	66 min
Apr 3, 2:59 AM CDT	Special Weather Statement	OUN	Archer, Wichita	46 min
Apr 3, 8:45 AM CDT	Severe Thunderstorm Warning	OUN	Clay	60 min
Apr 3, 9:48 AM CDT	Special Weather Statement	OUN	Clay	27 min
Apr 3, 4:59 PM CDT	Special Weather Statement	OUN	Hardeman	31 min
Apr 3, 5:35 PM CDT	Special Weather Statement	OUN	Hardeman	25 min

Nearby

Severe Thunderstorm Warnings in Texas, 2012 Every severe thunderstorm warning in 2012

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.