Alert archive / Oklahoma / Tornado Watches in 2006

Tornado Watch 247

April 24, 200639 counties in Oklahoma

The Storm Prediction Center issued this tornado watch at Apr 24, 2006, 8:43 PM CDT for 39 counties in Oklahoma. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 24, 2006, 8:43 PM CDT (01:43 UTC)
Expired
Apr 25, 2006, 1:35 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 39 counties

Adair County, OK, Atoka County, OK, Carter County, OK, Cherokee County, OK, Cleveland County, OK, Coal County, OK, Cotton County, OK, Creek County, OK, Delaware County, OK, Garvin County, OK, Grady County, OK, Haskell County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, Marshall County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Stephens County, OK, Tulsa County, OK, Wagoner County, OK

The radar

The Norman radar (KTLX), 80 km from the middle of the area, began a volume at 01:45 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

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

IssuedProductOfficeCountiesLasted
Apr 24, 8:43 PM CDTSevere Thunderstorm WarningTSATulsa62 min
Apr 24, 8:59 PM CDTSevere Thunderstorm WarningOUNCotton, Jefferson61 min
Apr 24, 9:14 PM CDTSevere Thunderstorm WarningTSAMayes, Rogers, Wagoner61 min
Apr 24, 9:22 PM CDTSevere Thunderstorm WarningTSAOkfuskee38 min
Apr 24, 9:25 PM CDTSevere Thunderstorm WarningTSACreek43 min
Apr 24, 9:41 PM CDTSevere Thunderstorm WarningOUNGarvin49 min
Apr 24, 10:16 PM CDTSevere Thunderstorm WarningTSADelaware, Mayes59 min
Apr 24, 10:20 PM CDTSevere Thunderstorm WarningOUNGrady40 min
Apr 24, 10:25 PM CDTSevere Thunderstorm WarningOUNPontotoc65 min
Apr 24, 10:57 PM CDTSevere Thunderstorm WarningTSACherokee, Sequoyah63 min
Apr 24, 11:10 PM CDTSevere Thunderstorm WarningTSAAdair50 min
Apr 24, 11:47 PM CDTSevere Thunderstorm WarningOUNCoal, Pontotoc43 min
Apr 24, 11:53 PM CDTSevere Thunderstorm WarningTSAOkfuskee52 min
Apr 25, 12:00 AM CDTSevere Thunderstorm WarningTSASequoyah30 min
Apr 25, 12:25 AM CDTSevere Thunderstorm WarningOUNCoal35 min
Apr 25, 12:57 AM CDTSevere Thunderstorm WarningOUNAtoka, Coal33 min
Apr 25, 12:58 AM CDTSevere Thunderstorm WarningTSAMcIntosh47 min
Apr 25, 1:26 AM CDTSevere Thunderstorm WarningOUNAtoka34 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, 1.7 hours before the alert went out and 95 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 2006-04-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2326 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 2006-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 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
2326 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
1122 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.8
Supercell composite
4.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 25, 1:03 AM CDTMesoscale DiscussionSPCBaxter, Cleburne, Conway, Faulkner, Independence, Izard and 15 more117 min
Apr 25, 1:11 AM CDTMesoscale DiscussionSPCPolk, Scott, Sebastian, Sevier64 min
Apr 25, 4:57 AM CDTMesoscale DiscussionSPCClark, Cleveland, Dallas, Garland, Grant, Hempstead and 12 more2 hr
Apr 25, 3:11 PM CDTMesoscale DiscussionSPCClay, Craighead, Fulton, Greene, Izard, Lawrence and 2 more64 min
Apr 25, 4:44 PM CDTSevere Thunderstorm WatchSPCBaxter, Clay, Cleburne, Craighead, Crittenden, Cross and 15 more6 hr
Apr 24, 8:27 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Caddo, Canadian, Carter, Cleveland and 21 more33 min
Apr 24, 10:30 PM CDTMesoscale DiscussionSPCAdair, Atoka, Carter, Cherokee, Cleveland, Coal and 27 more90 min
Apr 25, 1:35 AM CDTSevere Thunderstorm WatchSPCAtoka, Bryan, Carter, Choctaw, Coal, Haskell and 13 more5 hr

Nearby

Tornado Watches in Oklahoma, 2006Every tornado watch in 2006

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.