Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 39, NWS Norman, OK

March 21, 2012Garfield County, Kingfisher County, Logan County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Mar 21, 2012, 6:37 PM CDT for Garfield County, Kingfisher County, Logan County, Oklahoma. It was in force for 38 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 21, 2012, 6:37 PM CDT (23:37 UTC)
Expired
Mar 21, 2012, 7:15 PM CDT
In force
38 min
Issued by
NWS Norman, OK
Area
Storm-based polygon

Counties Garfield County, OK, Kingfisher County, OK, Logan County, OK

The radar

The Vance AFB radar (KVNX), 86 km from the middle of the area, began a volume at 23:38 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

Lamont, OK (KLMN), launched 12:00Z, 11.6 hours before the alert went out and 57 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, Lamont, OK at 12:00Z on 2012-03-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Lamont, OK at 12:00Z on 2012-03-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 square meters per square second.1939587897117136Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1813 m above ground
0-6 km bulk shear
85 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
58 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.

092 
WUUS54 KOUN 212337
SVROUN
OKC047-073-083-220015-
/O.NEW.KOUN.SV.W.0039.120321T2337Z-120322T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
637 PM CDT WED MAR 21 2012

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN GARFIELD COUNTY IN NORTH CENTRAL OKLAHOMA...
  EXTREME NORTHEASTERN KINGFISHER COUNTY IN NORTH CENTRAL OKLAHOMA...
  NORTHWESTERN LOGAN COUNTY IN CENTRAL OKLAHOMA...

* UNTIL 715 PM CDT

* AT 631 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL AND 
  DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR 
  CRESCENT...MOVING NORTHWEST AT 15 MPH. 

* LOCATIONS IMPACTED INCLUDE...
  COVINGTON...MARSHALL...DOUGLAS...LOVELL AND HAYWARD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR 
PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR 
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE 
INTO AREAS WHERE WATER COVERS THE ROAD.

FUNNEL CLOUDS WILL ALSO BE POSSIBLE WITH THIS STORM. IF TORNADOES DO 
DEVELOP...WIND SPEEDS ASSOCIATED WITH THESE TORNADOES WILL BE 
RELATIVELY WEAK. HOWEVER... RESIDENTS SHOULD REMAIN ALERT AND SEEK 
SHELTER IF THREATENING WEATHER IS OBSERVED.


&&

LAT...LON 3601 9743 3596 9761 3622 9785 3637 9750
TIME...MOT...LOC 2331Z 154DEG 15KT 3601 9754 

$$
1 follow-up statement
056 
WWUS54 KOUN 220017
SVSOUN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
717 PM CDT WED MAR 21 2012

OKC047-073-083-220025-
/O.EXP.KOUN.SV.W.0039.000000T0000Z-120322T0015Z/
KINGFISHER OK-GARFIELD OK-LOGAN OK-
717 PM CDT WED MAR 21 2012

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTHEASTERN 
KINGFISHER...SOUTHEASTERN GARFIELD AND NORTHWESTERN LOGAN COUNTIES 
HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE 
LIMITS. THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE. 

LAT...LON 3601 9743 3596 9761 3622 9785 3637 9750
TIME...MOT...LOC 0016Z 154DEG 15KT 3601 9754 

$$

BURKE

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 20, 8:11 PM CDTSpecial Weather StatementOUNCaddo34 min
Mar 20, 10:37 PM CDTSpecial Weather StatementOUNGarvin38 min
Mar 20, 11:22 PM CDTSpecial Weather StatementOUNCleveland23 min
Mar 21, 1:30 PM CDTSpecial Weather StatementOUNWashita30 min
Mar 21, 2:03 PM CDTSpecial Weather StatementOUNWashita27 min
Mar 21, 2:14 PM CDTSevere Thunderstorm WarningOUNJefferson, Stephens33 min
Mar 21, 2:50 PM CDTSpecial Weather StatementOUNCaddo25 min
Mar 21, 3:15 PM CDTSpecial Weather StatementOUNKiowa30 min
Mar 21, 3:16 PM CDTSpecial Weather StatementOUNRoger Mills29 min
Mar 21, 3:46 PM CDTSpecial Weather StatementOUNJackson29 min
Mar 21, 4:29 PM CDTSpecial Weather StatementOUNJackson31 min
Mar 21, 4:32 PM CDTSpecial Weather StatementOUNCanadian, Cleveland, Oklahoma43 min
Mar 21, 5:13 PM CDTSpecial Weather StatementOUNTillman32 min
Mar 21, 5:21 PM CDTSpecial Weather StatementOUNOklahoma24 min
Mar 21, 5:42 PM CDTSevere Thunderstorm WarningOUNLincoln, Oklahoma63 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.