Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 430, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Aug 14, 2012, 5:29 PM CDT for Beckham County, Greer County, Harmon County, Oklahoma. It was in force for 46 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
- Aug 14, 2012, 5:29 PM CDT (22:29 UTC)
- Expired
- Aug 14, 2012, 6:15 PM CDT
- In force
- 46 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
Counties Beckham County, OK, Greer County, OK, Harmon County, OK
The radar
The Altus AFB radar (KFDR), 112 km from the middle of the area, began a volume at 22:28 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
Amarillo Airport, TX (KAMA), launched 12:00Z, 10.5 hours before the alert went out and 170 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.
- Mixed-layer CAPE
- 12 J/kg
- Mixed-layer CIN
- -139 J/kg
- Mixed-layer LCL
- 2067 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
038
WUUS54 KOUN 142229
SVROUN
OKC009-055-057-142315-
/O.NEW.KOUN.SV.W.0430.120814T2229Z-120814T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
529 PM CDT TUE AUG 14 2012
THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHWESTERN BECKHAM COUNTY IN WESTERN OKLAHOMA...
NORTHWESTERN GREER COUNTY IN SOUTHWEST OKLAHOMA...
NORTHERN HARMON COUNTY IN SOUTHWEST OKLAHOMA...
* UNTIL 615 PM CDT
* AT 524 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS
WERE TRACKING A SEVERE THUNDERSTORM WITH A HISTORY OF PRODUCING
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM MAY ALSO PRODUCE
QUARTER SIZED HAIL. THIS STORM WAS LOCATED 8 MILES NORTHEAST OF
LUTIE...MOVING EAST AT 35 MPH.
* LOCATIONS IMPACTED INCLUDE...
ERICK...TEXOLA...DELHI...VINSON AND MADGE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE INSIDE A STURDY BUILDING UNTIL THE STORM HAS PASSED.
&&
LAT...LON 3526 10000 3527 9998 3529 9957 3478 9967
3478 9970 3487 9999
TIME...MOT...LOC 2224Z 285DEG 25KT 3510 10011
$$
AUSTIN1 follow-up statement
375
WWUS54 KOUN 142258
SVSOUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
558 PM CDT TUE AUG 14 2012
OKC009-055-057-142315-
/O.CON.KOUN.SV.W.0430.000000T0000Z-120814T2315Z/
HARMON OK-BECKHAM OK-GREER OK-
558 PM CDT TUE AUG 14 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM
CDT FOR NORTHERN HARMON...SOUTHWESTERN BECKHAM AND NORTHWESTERN
GREER COUNTIES...
AT 556 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 9 MILES
NORTH OF VINSON...MOVING SOUTHEAST AT 30 MPH.
LOCATIONS IMPACTED INCLUDE...
VINSON AND MADGE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE INSIDE A STURDY BUILDING UNTIL THE STORM HAS PASSED.
&&
LAT...LON 3511 9961 3478 9967 3478 9970 3486 9999
3506 10000 3511 9999
TIME...MOT...LOC 2256Z 285DEG 25KT 3504 9985
$$
AUSTINThe office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 3:56 PM CDT | Special Weather Statement | OUN | Harmon | 34 min |
| Aug 14, 4:21 PM CDT | Special Weather Statement | OUN | Harmon | 24 min |
| Aug 14, 4:51 PM CDT | Special Weather Statement | OUN | Jackson | 24 min |
| Aug 14, 5:09 PM CDT | Special Weather Statement | OUN | Jackson | 36 min |
| Aug 14, 5:14 PM CDT | Special Weather Statement | OUN | Beckham | 31 min |
| Aug 14, 5:26 PM CDT | Severe Thunderstorm Warning | OUN | Jackson, Tillman | 30 min |
| Aug 14, 5:41 PM CDT | Special Weather Statement | OUN | Carter, Marshall | 49 min |
| Aug 14, 6:15 PM CDT | Special Weather Statement | OUN | Greer, Kiowa | 45 min |
| Aug 14, 6:31 PM CDT | Special Weather Statement | OUN | Bryan | 44 min |
| Aug 14, 6:59 PM CDT | Special Weather Statement | OUN | Jackson | 46 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2012Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.