Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 21, NWS Norman, OK

March 29, 20134 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Mar 29, 2013, 11:50 AM CDT for 4 counties in Oklahoma. It was in force for 25 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 29, 2013, 11:50 AM CDT (16:50 UTC)
Expired
Mar 29, 2013, 12:15 PM CDT
In force
25 min
Issued by
NWS Norman, OK
Area
Storm-based polygon

Counties Coal County, OK, Johnston County, OK, Murray County, OK, Pontotoc County, OK

The radar

The Norman radar (KTLX), 114 km from the middle of the area, began a volume at 16:53 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

Norman, OK (KOUN), launched 12:00Z, 4.8 hours before the alert went out and 110 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, Norman, OK at 12:00Z on 2013-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 523 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 12:00Z on 2013-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 313 square meters per square second.19395878Sfc1 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
523 J/kg
Mixed-layer CIN
-200 J/kg
Mixed-layer LCL
559 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
313 m²/s²
0-3 km storm-relative helicity
336 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.3

Open this sounding in Storm Lab

The text

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

816 
WUUS54 KOUN 291650
SVROUN
OKC029-069-099-123-291715-
/O.NEW.KOUN.SV.W.0021.130329T1650Z-130329T1715Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
1150 AM CDT FRI MAR 29 2013

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN COAL COUNTY IN SOUTHEAST OKLAHOMA...
  NORTHEASTERN JOHNSTON COUNTY IN SOUTHEAST OKLAHOMA...
  EXTREME NORTHEASTERN MURRAY COUNTY IN SOUTHERN OKLAHOMA...
  SOUTHWESTERN PONTOTOC COUNTY IN EAST CENTRAL OKLAHOMA...

* UNTIL 1215 PM CDT

* AT 1148 AM 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 4 MILES 
  EAST OF HICKORY...MOVING SOUTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ROFF...BROMIDE...HICKORY...CONNERVILLE...FITTSTOWN...PONTOTOC...
  SCULLIN AND JESSE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE INSIDE A STURDY BUILDING UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3428 9648 3452 9688 3467 9683 3457 9642
TIME...MOT...LOC 1648Z 296DEG 29KT 3456 9679 

$$

KURTZ

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 8:51 AM CDTSpecial Weather StatementOUNCaddo24 min
Mar 29, 9:45 AM CDTSpecial Weather StatementOUNOklahoma30 min
Mar 29, 9:48 AM CDTSevere Thunderstorm WarningOUNCanadian, Cleveland, Grady, McClain, Oklahoma42 min
Mar 29, 9:58 AM CDTSpecial Weather StatementOUNGrady, McClain47 min
Mar 29, 10:25 AM CDTSpecial Weather StatementOUNCleveland20 min
Mar 29, 10:52 AM CDTSpecial Weather StatementOUNPottawatomie38 min
Mar 29, 11:01 AM CDTSpecial Weather StatementOUNMcClain44 min
Mar 29, 11:39 AM CDTSpecial Weather StatementOUNMurray36 min
Mar 29, 12:03 PM CDTSpecial Weather StatementOUNGarvin27 min
Mar 29, 12:10 PM CDTSevere Thunderstorm WarningOUNCoal, Johnston, Pontotoc35 min
Mar 29, 12:23 PM CDTSpecial Weather StatementOUNGarvin37 min
Mar 29, 12:25 PM CDTSevere Thunderstorm WarningOUNAtoka, Coal50 min
Mar 29, 12:35 PM CDTSevere Thunderstorm WarningOUNAtoka, Coal, Johnston40 min
Mar 29, 12:46 PM CDTSpecial Weather StatementOUNPontotoc29 min
Mar 29, 12:54 PM CDTSpecial Weather StatementOUNPontotoc36 min
Mar 29, 1:02 PM CDTSpecial Weather StatementOUNAtoka28 min
Mar 29, 1:10 PM CDTSpecial Weather StatementOUNCoal35 min
Mar 29, 1:18 PM CDTSpecial Weather StatementOUNPontotoc27 min
Mar 29, 1:30 PM CDTSevere Thunderstorm WarningOUNCoal30 min
Mar 29, 1:41 PM CDTSevere Thunderstorm WarningOUNPontotoc34 min
Mar 29, 1:57 PM CDTSevere Thunderstorm WarningOUNAtoka, Coal33 min
Mar 29, 2:13 PM CDTSpecial Weather StatementOUNCoal17 min
Mar 29, 2:39 PM CDTSpecial Weather StatementOUNAtoka36 min
Mar 29, 5:38 PM CDTSpecial Weather StatementOUNCanadian22 min
Mar 29, 5:55 PM CDTSevere Thunderstorm WarningOUNCanadian, Kingfisher50 min
Mar 29, 5:55 PM CDTSevere Thunderstorm WarningOUNTillman50 min
Mar 29, 6:40 PM CDTSevere Thunderstorm WarningOUNCotton50 min
Mar 29, 6:42 PM CDTSevere Thunderstorm WarningOUNComanche, Kiowa, Tillman48 min
Mar 29, 6:46 PM CDTSevere Thunderstorm WarningOUNCanadian, Oklahoma44 min
Mar 29, 6:47 PM CDTSevere Thunderstorm WarningOUNKingfisher, Logan43 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2013Every severe thunderstorm warning in 2013

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.