Alert archive / Oklahoma / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 203

April 25, 200525 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at Apr 25, 2005, 7:00 PM CDT for 25 counties in Oklahoma. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 25, 2005, 7:00 PM CDT (00:00 UTC)
Expired
Apr 26, 2005, 12:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 25 counties

Adair County, OK, Atoka County, OK, Bryan County, OK, Cherokee County, OK, Choctaw County, OK, Coal County, OK, Creek County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Marshall County, OK, McCurtain County, OK, McIntosh County, OK, Muskogee County, OK, Okfuskee County, OK, Okmulgee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Seminole County, OK, Sequoyah County, OK, Tulsa County, OK, Wagoner County, OK

The radar

The Norman radar (KTLX), 140 km from the middle of the area, began a volume at 00:03 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

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

IssuedProductOfficeCountiesLasted
Apr 25, 7:28 PM CDTSevere Thunderstorm WarningTSATulsa26 min
Apr 25, 7:37 PM CDTSevere Thunderstorm WarningOUNJohnston, Murray38 min
Apr 25, 8:58 PM CDTSevere Thunderstorm WarningOUNJohnston17 min
Apr 25, 9:11 PM CDTSevere Thunderstorm WarningTSAPittsburg68 min
Apr 25, 9:25 PM CDTSevere Thunderstorm WarningOUNSeminole35 min
Apr 25, 10:00 PM CDTSevere Thunderstorm WarningTSAHaskell60 min
Apr 25, 10:05 PM CDTSevere Thunderstorm WarningTSAChoctaw55 min
Apr 25, 10:21 PM CDTSevere Thunderstorm WarningTSALeFlore54 min
Apr 25, 10:50 PM CDTSevere Thunderstorm WarningTSAChoctaw56 min
Apr 25, 11:46 PM CDTSevere Thunderstorm WarningSHVMcCurtain74 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, 0.0 hours before the alert went out and 147 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 2005-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 239 joules per kilogram.LCLEL10008507005003002001001 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 2005-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 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
239 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1786 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
110 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 25, 8:49 PM CDTMesoscale DiscussionSPCAdair, Atoka, Cherokee, Choctaw, Coal, Creek and 19 more86 min
Apr 25, 10:49 PM CDTMesoscale DiscussionSPCBryan, Choctaw, McCurtain86 min
Apr 25, 11:20 PM CDTSevere Thunderstorm WatchSPCAtoka, Bryan, Choctaw, Coal, McCurtain, Pushmataha7 hr

Nearby

Severe Thunderstorm Watches in Oklahoma, 2005Every severe thunderstorm watch in 2005

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.