Alert archive / Oklahoma / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 133

April 30, 200410 counties in Arkansas; 4 counties in Missouri; 29 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at Apr 30, 2004, 4:40 PM CDT for 10 counties in Arkansas; 4 counties in Missouri; 29 counties in Oklahoma. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 30, 2004, 4:40 PM CDT (21:40 UTC)
Expired
Apr 30, 2004, 10:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 43 counties

Benton County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Newton County, AR, Sebastian County, AR, Washington County, AR, Barry County, MO, Christian County, MO, McDonald County, MO, Stone County, MO, Adair County, OK, Atoka County, OK, Carter County, OK, Cherokee County, OK, Cleveland County, OK, Coal County, OK, Creek County, OK, Delaware County, OK, Garvin County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Lincoln County, OK, Love County, OK, Marshall County, OK, Mayes County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Okfuskee County, OK, Okmulgee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Sequoyah County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 83 km from the middle of the area, began a volume at 21:40 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 30, 4:59 PM CDTSevere Thunderstorm WarningOUNLove46 min
Apr 30, 5:24 PM CDTSevere Thunderstorm WarningOUNMarshall51 min
Apr 30, 6:20 PM CDTSevere Thunderstorm WarningOUNMarshall25 min
Apr 30, 6:48 PM CDTSevere Thunderstorm WarningTSAMuskogee57 min
Apr 30, 7:22 PM CDTSevere Thunderstorm WarningTSAMayes53 min
Apr 30, 7:50 PM CDTSevere Thunderstorm WarningTSACherokee55 min
Apr 30, 7:53 PM CDTSevere Thunderstorm WarningTSADelaware67 min
Apr 30, 9:07 PM CDTSevere Thunderstorm WarningTSABenton53 min
Apr 30, 9:09 PM CDTSevere Thunderstorm WarningOUNLove36 min
Apr 30, 9:19 PM CDTSevere Thunderstorm WarningOUNLincoln41 min
Apr 30, 9:32 PM CDTTornado WarningTSABenton43 min
Apr 30, 9:50 PM CDTFlash Flood WarningTSABenton4 hr

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, 9.7 hours before the alert went out and 158 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 2004-04-30Temperature 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 2004-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 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
1442 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
141 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 30, 10:59 AM CDTMesoscale DiscussionSPCClay, Cleburne, Craighead, Greene, Independence, Jackson and 6 more2 hr
Apr 30, 4:10 PM CDTMesoscale DiscussionSPCCrawford, Franklin, Logan, Scott, Sebastian2 hr
Apr 30, 1:52 PM CDTMesoscale DiscussionSPCBollinger, Cape Girardeau, Iron, Madison, Perry, Sainte Genevieve and 3 more113 min
Apr 29, 8:56 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Custer, Grant, Jackson, Kiowa and 2 more64 min
Apr 29, 9:28 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Coal, Garvin and 17 more62 min
Apr 29, 10:27 PM CDTMesoscale DiscussionSPCCaddo, Comanche, Cotton, Greer, Harmon, Jackson and 4 more63 min
Apr 29, 11:05 PM CDTSevere Thunderstorm WatchSPCBeckham, Caddo, Carter, Comanche, Cotton, Custer and 15 more4 hr
Apr 30, 2:16 AM CDTMesoscale DiscussionSPCBeckham, Caddo, Carter, Comanche, Cotton, Custer and 17 more59 min
Apr 30, 12:45 PM CDTTornado WatchSPCBryan, Carter, Cotton, Jefferson, Love, Marshall8 hr
Apr 30, 3:09 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Caddo, Canadian, Comanche, Custer and 9 more2 hr
Apr 30, 5:53 PM CDTMesoscale DiscussionSPCBryan, Carter, Cotton, Jefferson, Love, Marshall97 min

Nearby

Severe Thunderstorm Watches in Oklahoma, 2004Severe Thunderstorm Watches in Arkansas, 2004Severe Thunderstorm Watches in Missouri, 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; radar from the NEXRAD Level II archive.