Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 52, NWS Norman, OK

May 30, 2012Baylor County, Knox County, Texas

NWS Norman, OK issued this tornado warning at May 30, 2012, 7:29 PM CDT for Baylor County, Knox County, Texas. It was in force for 31 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 30, 2012, 7:29 PM CDT (00:29 UTC)
Expired
May 30, 2012, 8:00 PM CDT
In force
31 min
Issued by
NWS Norman, OK
Area
Storm-based polygon

Counties Baylor County, TX, Knox County, TX

The radar

The Altus AFB radar (KFDR), 98 km from the middle of the area, began a volume at 00:30 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.

IssuedProductOfficeLasted
May 30, 3:38 PM CDTTornado WatchSPC5 hr
May 30, 6:13 PM CDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.5 hours before the alert went out and 243 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-pSkew-T log-p diagram, Fort Worth, TX at 00:00Z on 2012-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 451 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 00:00Z on 2012-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -119 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
451 J/kg
Mixed-layer CIN
-374 J/kg
Mixed-layer LCL
2223 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
-119 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

446 
WFUS54 KOUN 310029
TOROUN
TXC023-275-310100-
/O.NEW.KOUN.TO.W.0052.120531T0029Z-120531T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
729 PM CDT WED MAY 30 2012

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME WEST CENTRAL BAYLOR COUNTY IN NORTH TEXAS...
  KNOX COUNTY IN NORTH TEXAS...

* UNTIL 800 PM CDT

* AT 725 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED 
  A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS 
  DANGEROUS STORM WAS LOCATED NEAR GILLILAND...MOVING SOUTHEAST AT 
  20 MPH. IN ADDITION TO A TORNADO... THIS STORM IS CAPABLE OF 
  PRODUCING HAIL LARGER THAN BASEBALLS AND WIND GUSTS TO 70 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MUNDAY...GILLILAND...RHINELAND...VERA AND RED SPRINGS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GET IN...GET DOWN AND COVER UP. TAKE COVER NOW IN A STORM SHELTER 
OR AN INTERIOR ROOM OF A STURDY BUILDING. STAY AWAY FROM DOORS AND 
WINDOWS.

&&

LAT...LON 3368 9986 3381 9971 3380 9970 3382 9969
      3382 9966 3361 9938 3342 9964
TIME...MOT...LOC 0025Z 315DEG 17KT 3370 9973 

$$

..SPEG.

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 7:55 PM CDTSevere Thunderstorm WarningOUNBaylor, Knox65 min
May 30, 8:11 PM CDTSpecial Weather StatementOUNWilbarger34 min
May 30, 8:29 PM CDTSevere Thunderstorm WarningOUNKnox31 min
May 30, 8:55 PM CDTSevere Thunderstorm WarningOUNKnox22 min
May 30, 8:59 PM CDTSevere Thunderstorm WarningOUNArcher, Baylor61 min
May 30, 10:44 PM CDTSpecial Weather StatementOUNArcher, Clay, Wichita61 min
May 31, 12:44 AM CDTSpecial Weather StatementOUNClay, Foard, Hardeman, Wichita, Wilbarger46 min

Nearby

Tornado Warnings in Texas, 2012Every tornado warning in 2012Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.