Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 39, NWS Norman, OK
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.
- 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
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 8:11 PM CDT | Special Weather Statement | OUN | Caddo | 34 min |
| Mar 20, 10:37 PM CDT | Special Weather Statement | OUN | Garvin | 38 min |
| Mar 20, 11:22 PM CDT | Special Weather Statement | OUN | Cleveland | 23 min |
| Mar 21, 1:30 PM CDT | Special Weather Statement | OUN | Washita | 30 min |
| Mar 21, 2:03 PM CDT | Special Weather Statement | OUN | Washita | 27 min |
| Mar 21, 2:14 PM CDT | Severe Thunderstorm Warning | OUN | Jefferson, Stephens | 33 min |
| Mar 21, 2:50 PM CDT | Special Weather Statement | OUN | Caddo | 25 min |
| Mar 21, 3:15 PM CDT | Special Weather Statement | OUN | Kiowa | 30 min |
| Mar 21, 3:16 PM CDT | Special Weather Statement | OUN | Roger Mills | 29 min |
| Mar 21, 3:46 PM CDT | Special Weather Statement | OUN | Jackson | 29 min |
| Mar 21, 4:29 PM CDT | Special Weather Statement | OUN | Jackson | 31 min |
| Mar 21, 4:32 PM CDT | Special Weather Statement | OUN | Canadian, Cleveland, Oklahoma | 43 min |
| Mar 21, 5:13 PM CDT | Special Weather Statement | OUN | Tillman | 32 min |
| Mar 21, 5:21 PM CDT | Special Weather Statement | OUN | Oklahoma | 24 min |
| Mar 21, 5:42 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Oklahoma | 63 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.