Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 252, NWS Norman, OK

May 30, 2007Garvin County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 30, 2007, 5:15 AM CDT for Garvin County, Oklahoma. It was in force for 45 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, 2007, 5:15 AM CDT (10:15 UTC)
Expired
May 30, 2007, 6:00 AM CDT
In force
45 min
Issued by
NWS Norman, OK
Area
Counties, with a storm outline in the text

County Garvin County, OK

The radar

The Norman radar (KTLX), 70 km from the middle of the area, began a volume at 10:15 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, 4:50 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 10.3 hours before the alert went out and 56 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 00:00Z on 2007-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1314 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 00:00Z on 2007-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 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
1314 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
664 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOUN 301015
SVROUN
OKC049-301100-
/O.NEW.KOUN.SV.W.0252.070530T1015Z-070530T1100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
515 AM CDT WED MAY 30 2007

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GARVIN COUNTY IN SOUTHERN OKLAHOMA...

* UNTIL 600 AM CDT

* AT 515 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES SOUTHWEST OF FOSTER...MOVING NORTHEAST
  AT 20 MPH. HAIL UP TO THE SIZE OF NICKELS AND WINDS OF 65 MPH
  ARE LIKELY.

* LOCATIONS IN THE WARNING INCLUDE ELMORE CITY...FOSTER...
  MAYSVILLE...PAOLI...PAULS VALLEY...PERNELL...WHITEBEAD AND
  WYNNEWOOD.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 65 AND 79.

TAKE SHELTER FROM THE STORM IN A STURDY BUILDING AND MOVE AWAY FROM
WINDOWS.

LAT...LON 3477 9763 3454 9754 3465 9709 3484 9723

$$
WR

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 12:20 AM CDTSevere Thunderstorm WarningOUNHarper40 min
May 30, 12:35 AM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills40 min
May 30, 1:35 AM CDTSevere Thunderstorm WarningOUNWoods, Woodward40 min
May 30, 2:17 AM CDTSevere Thunderstorm WarningOUNDewey28 min
May 30, 3:29 AM CDTSevere Thunderstorm WarningOUNBeckham, Custer, Roger Mills, Washita46 min
May 30, 3:51 AM CDTSevere Thunderstorm WarningOUNJefferson, Love39 min
May 30, 4:07 AM CDTSevere Thunderstorm WarningOUNBeckham, Caddo, Greer, Kiowa, Washita53 min
May 30, 4:19 AM CDTSevere Thunderstorm WarningOUNLove41 min
May 30, 4:36 AM CDTSevere Thunderstorm WarningOUNCarter, Love39 min
May 30, 4:59 AM CDTSevere Thunderstorm WarningOUNCaddo, Canadian, Cleveland, Grady, McClain, Oklahoma46 min
May 30, 5:06 AM CDTSevere Thunderstorm WarningOUNCarter, Love, Marshall39 min
May 30, 5:08 AM CDTSevere Thunderstorm WarningOUNComanche, Jackson, Kiowa, Tillman52 min
May 30, 5:23 AM CDTSevere Thunderstorm WarningOUNLogan52 min
May 30, 5:37 AM CDTSevere Thunderstorm WarningOUNJohnston, Marshall38 min
May 30, 5:41 AM CDTSevere Thunderstorm WarningOUNCleveland, Garvin, Grady, McClain, Stephens49 min
May 30, 5:44 AM CDTSevere Thunderstorm WarningOUNLincoln, Oklahoma31 min
May 30, 5:59 AM CDTSevere Thunderstorm WarningOUNPottawatomie46 min
May 30, 6:11 AM CDTSevere Thunderstorm WarningOUNCarter, Love49 min
May 30, 6:16 AM CDTSevere Thunderstorm WarningOUNLincoln, Payne59 min
May 30, 6:20 AM CDTSevere Thunderstorm WarningOUNGarvin, Johnston, Murray, Pontotoc, Seminole70 min
May 30, 6:53 AM CDTSevere Thunderstorm WarningOUNCoal, Hughes52 min
May 30, 6:56 AM CDTSevere Thunderstorm WarningOUNCarter, Jefferson, Love49 min
May 30, 7:30 AM CDTSevere Thunderstorm WarningOUNAtoka, Bryan, Coal, Johnston, Marshall60 min
May 30, 7:49 AM CDTFlash Flood WarningOUNAtoka, Bryan3 hr
May 30, 7:49 AM CDTFlash Flood WarningOUNAtoka, Beckham, Blaine, Bryan, Caddo, Canadian and 37 more111 days

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2007Every severe thunderstorm warning in 2007

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.