Alert archive / Oklahoma / Tornado Watches in 2008

Tornado Watch 295

May 10, 200822 counties in Oklahoma; 22 counties in Texas

The Storm Prediction Center issued this tornado watch at May 10, 2008, 1:38 PM CDT for 22 counties in Oklahoma; 22 counties in Texas. It was in force for 10 hr.

The area

The outline as issued.

The facts

Issued
May 10, 2008, 1:38 PM CDT (18:38 UTC)
Expired
May 11, 2008, 12:00 AM CDT
In force
10 hr
Issued by
the Storm Prediction Center
Largest hail expected
3 in
Strongest gust expected
60 kt
All 44 counties

Atoka County, OK, Bryan County, OK, Carter County, OK, Choctaw County, OK, Coal County, OK, Garvin County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Love County, OK, Marshall County, OK, McCurtain County, OK, McIntosh County, OK, Murray County, OK, Okfuskee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Seminole County, OK, Bowie County, TX, Camp County, TX, Cass County, TX, Collin County, TX, Delta County, TX, Fannin County, TX, Franklin County, TX, Grayson County, TX, Gregg County, TX, Harrison County, TX, Hopkins County, TX, Hunt County, TX, Lamar County, TX, Marion County, TX, Morris County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Wood County, TX

The radar

The Norman radar (KTLX), 155 km from the middle of the area, began a volume at 18:41 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
50%
One or more EF2 to EF5 tornadoes
50%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
50%
Ten or more severe hail reports
60%
One or more hailstones of 2 inches or more
50%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 10, 1:46 PM CDTSevere Thunderstorm WarningTSAAdair, Cherokee, Haskell, Muskogee, Sequoyah59 min
May 10, 2:14 PM CDTSevere Thunderstorm WarningTSAHaskell, LeFlore, Pittsburg, Sequoyah46 min
May 10, 2:33 PM CDTSevere Thunderstorm WarningTSAHaskell, Latimer, LeFlore57 min
May 10, 2:40 PM CDTSevere Thunderstorm WarningTSAAdair, LeFlore, Sequoyah65 min
May 10, 3:03 PM CDTSevere Thunderstorm WarningTSALeFlore57 min
May 10, 4:59 PM CDTSevere Thunderstorm WarningTSAHaskell, McIntosh, Muskogee, Pittsburg61 min
May 10, 5:01 PM CDTSevere Thunderstorm WarningTSACherokee, McIntosh, Muskogee, Sequoyah, Wagoner59 min
May 10, 5:12 PM CDTSevere Thunderstorm WarningTSAHaskell, Latimer, Pittsburg63 min
May 10, 5:14 PM CDTTornado WarningTSAHaskell, Latimer, Pittsburg61 min
May 10, 5:16 PM CDTTornado WarningTSAHaskell, Latimer, McIntosh, Muskogee, Pittsburg59 min
May 10, 5:19 PM CDTTornado WarningTSAMcIntosh26 min
May 10, 5:29 PM CDTTornado WarningTSALatimer, Pittsburg, Pushmataha31 min
May 10, 5:44 PM CDTTornado WarningTSAHaskell, Latimer, LeFlore, Pittsburg46 min
May 10, 5:49 PM CDTTornado WarningTSAPittsburg, Pushmataha41 min
May 10, 5:52 PM CDTTornado WarningOUNAtoka23 min
May 10, 5:56 PM CDTTornado WarningTSALatimer, LeFlore, Pittsburg, Pushmataha49 min
May 10, 6:16 PM CDTTornado WarningTSALatimer, LeFlore44 min
May 10, 6:18 PM CDTTornado WarningTSALatimer, LeFlore, Pushmataha42 min
May 10, 6:24 PM CDTTornado WarningTSAPushmataha49 min
May 10, 6:41 PM CDTTornado WarningTSALeFlore38 min
May 10, 6:46 PM CDTTornado WarningSHVMcCurtain59 min
May 10, 6:55 PM CDTTornado WarningSHVMcCurtain65 min
May 10, 7:00 PM CDTTornado WarningTSALeFlore19 min
May 10, 7:07 PM CDTSevere Thunderstorm WarningFWDFannin53 min
May 10, 7:27 PM CDTSevere Thunderstorm WarningFWDLamar78 min
May 10, 7:39 PM CDTSevere Thunderstorm WarningFWDFannin39 min
May 10, 7:57 PM CDTSevere Thunderstorm WarningFWDDelta, Hunt63 min
May 10, 8:23 PM CDTSevere Thunderstorm WarningSHVMcCurtain67 min
May 10, 8:30 PM CDTSevere Thunderstorm WarningSHVBowie, Franklin, Morris, Red River, Titus60 min
May 10, 8:41 PM CDTSevere Thunderstorm WarningFWDHopkins27 min
May 10, 9:19 PM CDTSevere Thunderstorm WarningSHVCamp, Cass, Franklin, Harrison, Marion, Morris and 3 more56 min
May 10, 9:25 PM CDTSevere Thunderstorm WarningSHVBowie46 min
May 10, 9:52 PM CDTSevere Thunderstorm WarningSHVBowie, Cass53 min
May 10, 10:32 PM CDTSevere Thunderstorm WarningSHVHarrison, Panola43 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, 6.6 hours before the alert went out and 156 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 2008-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 146 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 12:00Z on 2008-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 544 square meters per square second.1939587897117136Sfc1 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
146 J/kg
Mixed-layer CIN
-598 J/kg
Mixed-layer LCL
1471 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
544 m²/s²
0-3 km storm-relative helicity
682 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 10, 4:05 AM CDTMesoscale DiscussionSPCAdair, LeFlore, McCurtain, Sequoyah115 min
May 10, 7:36 AM CDTMesoscale DiscussionSPCAdair, Atoka, Bryan, Canadian, Carter, Cherokee and 45 more2 hr
May 10, 10:55 AM CDTMesoscale DiscussionSPCAdair, Cherokee, Craig, Delaware, Haskell, Latimer and 5 more2 hr
May 10, 11:29 AM CDTTornado WatchSPCAdair, Cherokee, Craig, Creek, Delaware, Mayes and 11 more9 hr
May 10, 12:47 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Carter, Choctaw, Cleveland, Coal and 24 more88 min
May 10, 5:13 PM CDTMesoscale DiscussionSPCAdair, Cherokee, Craig, Delaware, Mayes, Muskogee and 9 more2 hr
May 9, 8:14 PM CDTMesoscale DiscussionSPCBell, Burnet, Coryell, Falls, Lampasas, Limestone and 5 more61 min
May 10, 3:59 PM CDTMesoscale DiscussionSPCBandera, Bell, Blanco, Bosque, Burnet, Coryell and 13 more2 hr
May 10, 4:16 PM CDTTornado WatchSPCAnderson, Bell, Bosque, Collin, Coryell, Dallas and 20 more5 hr

Nearby

Tornado Watches in Oklahoma, 2008Tornado Watches in Texas, 2008Every tornado watch in 2008

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.