Alert archive / Oklahoma / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 58

April 9, 200433 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at Apr 9, 2004, 2:15 PM CDT for 33 counties in Oklahoma. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Apr 9, 2004, 2:15 PM CDT (19:15 UTC)
Expired
Apr 9, 2004, 8:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 33 counties

Atoka County, OK, Beckham 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, Ellis County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Hughes County, OK, Johnston County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Marshall County, OK, McClain County, OK, Murray County, OK, Okfuskee County, OK, Oklahoma County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Roger Mills County, OK, Seminole County, OK, Stephens County, OK, Washita County, OK

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 9, 2:30 PM CDTSevere Thunderstorm WarningOUNSeminole15 min
Apr 9, 2:34 PM CDTSevere Thunderstorm WarningTSAOkfuskee71 min
Apr 9, 2:53 PM CDTSevere Thunderstorm WarningOUNCleveland, Oklahoma37 min
Apr 9, 3:13 PM CDTSevere Thunderstorm WarningOUNPottawatomie32 min
Apr 9, 3:33 PM CDTSevere Thunderstorm WarningOUNKingfisher27 min
Apr 9, 3:37 PM CDTSevere Thunderstorm WarningOUNPontotoc38 min
Apr 9, 3:58 PM CDTSevere Thunderstorm WarningOUNKingfisher, Logan47 min
Apr 9, 4:13 PM CDTSevere Thunderstorm WarningOUNLincoln, Pottawatomie47 min
Apr 9, 4:37 PM CDTSevere Thunderstorm WarningOUNHughes38 min
Apr 9, 4:40 PM CDTSevere Thunderstorm WarningOUNDewey50 min
Apr 9, 4:53 PM CDTSevere Thunderstorm WarningTSAPittsburg82 min
Apr 9, 5:24 PM CDTTornado WarningTSAPittsburg51 min
Apr 9, 6:19 PM CDTSevere Thunderstorm WarningOUNBryan41 min
Apr 9, 6:19 PM CDTSevere Thunderstorm WarningTSAOkfuskee41 min
Apr 9, 6:57 PM CDTSevere Thunderstorm WarningOUNBryan48 min
Apr 9, 7:00 PM CDTSevere Thunderstorm WarningOUNAtoka30 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 12:00Z, 7.3 hours before the alert went out and 87 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 2004-04-09Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 12:00Z on 2004-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 143 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1639 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
143 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 9, 1:00 PM CDTMesoscale DiscussionSPCAdair, Cherokee, Craig, Creek, Delaware, Garfield and 21 more3 hr
Apr 9, 1:51 PM CDTMesoscale DiscussionSPCAtoka, Beckham, Blaine, Caddo, Canadian, Cleveland and 27 more114 min
Apr 9, 3:32 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Haskell and 15 more88 min
Apr 9, 4:00 PM CDTSevere Thunderstorm WatchSPCHaskell, Latimer, LeFlore, Muskogee, Pushmataha, Sequoyah5 hr
Apr 9, 4:20 PM CDTMesoscale DiscussionSPCCimarron115 min

Nearby

Severe Thunderstorm Watches in Oklahoma, 2004Every severe thunderstorm watch in 2004

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.