Alert archive / Oklahoma / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 520

June 11, 200334 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at Jun 11, 2003, 7:25 PM CDT for 34 counties in Oklahoma. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 11, 2003, 7:25 PM CDT (00:25 UTC)
Expired
Jun 12, 2003, 1:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 34 counties

Alfalfa County, OK, Blaine County, OK, Bryan County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Harper County, OK, Jefferson County, OK, Johnston County, OK, Kingfisher County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, Major County, OK, Marshall County, OK, McClain County, OK, Murray County, OK, Noble County, OK, Oklahoma County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Woods County, OK, Woodward County, OK

Warnings issued inside it

18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 11, 8:16 PM CDTSevere Thunderstorm WarningOUNComanche59 min
Jun 11, 8:30 PM CDTSevere Thunderstorm WarningOUNCaddo, Canadian45 min
Jun 11, 8:36 PM CDTSevere Thunderstorm WarningOUNBlaine39 min
Jun 11, 9:02 PM CDTSevere Thunderstorm WarningOUNGrady58 min
Jun 11, 9:10 PM CDTSevere Thunderstorm WarningOUNStephens65 min
Jun 11, 9:15 PM CDTSevere Thunderstorm WarningOUNBlaine, Canadian, Kingfisher45 min
Jun 11, 9:16 PM CDTSevere Thunderstorm WarningOUNComanche44 min
Jun 11, 9:17 PM CDTSevere Thunderstorm WarningOUNCaddo43 min
Jun 11, 9:29 PM CDTSevere Thunderstorm WarningOUNCleveland, McClain, Oklahoma61 min
Jun 11, 9:30 PM CDTSevere Thunderstorm WarningOUNCleveland, McClain, Oklahoma60 min
Jun 11, 9:42 PM CDTSevere Thunderstorm WarningOUNCarter, Garvin, Murray63 min
Jun 11, 10:00 PM CDTSevere Thunderstorm WarningOUNGrady30 min
Jun 11, 10:03 PM CDTSevere Thunderstorm WarningOUNLogan42 min
Jun 11, 10:15 PM CDTSevere Thunderstorm WarningOUNLincoln, Pottawatomie60 min
Jun 11, 10:36 PM CDTSevere Thunderstorm WarningOUNGarvin, Murray, Pontotoc39 min
Jun 11, 10:51 PM CDTSevere Thunderstorm WarningOUNSeminole39 min
Jun 11, 11:13 PM CDTSevere Thunderstorm WarningOUNAtoka, Bryan, Coal, Hughes, Pontotoc62 min
Jun 11, 11:15 PM CDTSevere Thunderstorm WarningOUNLincoln45 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 0.4 hours before the alert went out and 61 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 2003-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4834 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 2003-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.1939Sfc1 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
4834 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1070 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
42 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.5

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 11, 10:15 PM CDTMesoscale DiscussionSPCAlfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 31 more60 min
Jun 11, 10:25 PM CDTSevere Thunderstorm WatchSPCAdair, Atoka, Cherokee, Choctaw, Craig, Creek and 23 more5 hr
Jun 12, 12:14 AM CDTMesoscale DiscussionSPCLatimer, LeFlore, McCurtain, Pushmataha2 hr
Jun 12, 1:30 AM CDTMesoscale DiscussionSPCJefferson, Love, Tillman2 hr
Jun 12, 3:30 PM CDTSevere Thunderstorm WatchSPCComanche, Cotton, Harmon, Jackson, Tillman6 hr
Jun 12, 5:59 PM CDTMesoscale DiscussionSPCCimarron91 min

Nearby

Severe Thunderstorm Watches in Oklahoma, 2003Every severe thunderstorm watch in 2003

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.