Alert archive / Missouri / Tornado Watches in 2006

Tornado Watch 787

September 22, 20067 counties in Arkansas; 30 counties in Missouri; 15 counties in Oklahoma

The Storm Prediction Center issued this tornado watch at Sep 22, 2006, 12:06 PM CDT for 7 counties in Arkansas; 30 counties in Missouri; 15 counties in Oklahoma. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Sep 22, 2006, 12:06 PM CDT (17:06 UTC)
Expired
Sep 22, 2006, 9:00 PM CDT
In force
9 hr
Issued by
the Storm Prediction Center
Particularly dangerous situation
Yes
Largest hail expected
2 in
Strongest gust expected
60 kt
All 52 counties

Benton County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Madison County, AR, Sebastian County, AR, Washington County, AR, Barry County, MO, Camden County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Hickory County, MO, Howell County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, Maries County, MO, McDonald County, MO, Miller County, MO, Morgan County, MO, Newton County, MO, Oregon County, MO, Ozark County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Shannon County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Choctaw County, OK, Craig County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Ottawa County, OK, Pittsburg County, OK, Pushmataha County, OK, Sequoyah County, OK

The radar

The Springfield radar (KSGF), 79 km from the middle of the area, began a volume at 17:07 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
70%
One or more EF2 to EF5 tornadoes
70%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
50%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
20%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Sep 22, 12:34 PM CDTTornado WarningSGFDallas41 min
Sep 22, 12:46 PM CDTTornado WarningSGFLaclede49 min
Sep 22, 12:56 PM CDTTornado WarningSGFCamden41 min
Sep 22, 1:06 PM CDTSevere Thunderstorm WarningSGFTexas69 min
Sep 22, 1:20 PM CDTTornado WarningSGFPulaski35 min
Sep 22, 1:33 PM CDTTornado WarningSGFShannon, Texas50 min
Sep 22, 1:38 PM CDTSevere Thunderstorm WarningSGFDent67 min
Sep 22, 1:42 PM CDTTornado WarningSGFMaries, Phelps50 min
Sep 22, 1:51 PM CDTTornado WarningSGFDent54 min
Sep 22, 2:47 PM CDTSevere Thunderstorm WarningTSACrawford43 min
Sep 22, 3:00 PM CDTSevere Thunderstorm WarningTSAWashington38 min
Sep 22, 3:05 PM CDTSevere Thunderstorm WarningTSAMadison55 min
Sep 22, 3:25 PM CDTSevere Thunderstorm WarningTSACarroll48 min
Sep 22, 3:37 PM CDTTornado WarningTSAMadison38 min
Sep 22, 3:48 PM CDTSevere Thunderstorm WarningSGFDent57 min
Sep 22, 4:02 PM CDTTornado WarningSGFDent34 min
Sep 22, 4:12 PM CDTSevere Thunderstorm WarningSGFDouglas, Taney63 min
Sep 22, 4:35 PM CDTSevere Thunderstorm WarningSGFWright37 min
Sep 22, 4:58 PM CDTTornado WarningSGFDouglas, Ozark30 min
Sep 22, 5:08 PM CDTSevere Thunderstorm WarningTSASequoyah20 min
Sep 22, 5:12 PM CDTSevere Thunderstorm WarningTSAAdair19 min
Sep 22, 5:13 PM CDTSevere Thunderstorm WarningTSACrawford62 min
Sep 22, 5:14 PM CDTSevere Thunderstorm WarningSGFHowell61 min
Sep 22, 5:20 PM CDTSevere Thunderstorm WarningTSAWashington55 min
Sep 22, 5:21 PM CDTTornado WarningSGFHowell37 min
Sep 22, 5:42 PM CDTSevere Thunderstorm WarningTSAMadison63 min
Sep 22, 5:43 PM CDTSevere Thunderstorm WarningTSAFranklin62 min
Sep 22, 5:49 PM CDTSevere Thunderstorm WarningTSABenton45 min
Sep 22, 5:51 PM CDTSevere Thunderstorm WarningSGFPhelps39 min
Sep 22, 5:52 PM CDTTornado WarningSGFShannon23 min
Sep 22, 5:53 PM CDTTornado WarningTSAMadison37 min
Sep 22, 6:10 PM CDTTornado WarningTSAFranklin50 min
Sep 22, 6:32 PM CDTSevere Thunderstorm WarningTSAMadison14 min
Sep 22, 6:35 PM CDTTornado WarningSGFOregon25 min
Sep 22, 7:19 PM CDTSevere Thunderstorm WarningTSAPittsburg, Pushmataha56 min
Sep 22, 7:25 PM CDTSevere Thunderstorm WarningTSALatimer65 min
Sep 22, 7:35 PM CDTSevere Thunderstorm WarningTSABenton35 min
Sep 22, 7:42 PM CDTFlash Flood WarningSGFOregon6 hr
Sep 22, 7:42 PM CDTSevere Thunderstorm WarningTSAAdair, Cherokee63 min
Sep 22, 7:50 PM CDTSevere Thunderstorm WarningTSAHaskell55 min
Sep 22, 7:52 PM CDTSevere Thunderstorm WarningTSACarroll53 min
Sep 22, 8:11 PM CDTTornado WarningTSACarroll49 min
Sep 22, 8:11 PM CDTSevere Thunderstorm WarningTSAChoctaw2 hr
Sep 22, 8:16 PM CDTSevere Thunderstorm WarningTSAPushmataha59 min
Sep 22, 8:19 PM CDTSevere Thunderstorm WarningSGFTaney41 min
Sep 22, 8:24 PM CDTSevere Thunderstorm WarningSGFOzark96 min
Sep 22, 8:38 PM CDTSevere Thunderstorm WarningTSALeFlore82 min
Sep 22, 8:41 PM CDTSevere Thunderstorm WarningTSAAdair34 min
Sep 22, 8:47 PM CDTTornado WarningTSAChoctaw58 min
Sep 22, 8:52 PM CDTSevere Thunderstorm WarningTSACherokee, Muskogee53 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

Springfield, MO (KSGF), launched 12:00Z, 5.1 hours before the alert went out and 33 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, Springfield, MO at 12:00Z on 2006-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 409 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, Springfield, MO at 12:00Z on 2006-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 311 square meters per square second.1939587897Sfc1 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
409 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
642 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
311 m²/s²
0-3 km storm-relative helicity
363 m²/s²
Significant tornado parameter
0.8
Supercell composite
8.7

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 21, 7:50 PM CDTMesoscale DiscussionSPCClark, Franklin, Garland, Hot Spring, Howard, Logan and 7 more115 min
Sep 21, 7:58 PM CDTMesoscale DiscussionSPCBenton, Madison, Washington2 hr
Sep 21, 9:30 PM CDTTornado WatchSPCArkansas, Clark, Conway, Crawford, Faulkner, Franklin and 24 more8 hr
Sep 21, 11:25 PM CDTMesoscale DiscussionSPCClark, Conway, Crawford, Franklin, Garland, Hot Spring and 16 more2 hr
Sep 22, 4:08 AM CDTMesoscale DiscussionSPCArkansas, Clay, Cleburne, Conway, Craighead, Crittenden and 23 more67 min
Sep 22, 4:39 AM CDTTornado WatchSPCClay, Cleburne, Craighead, Crittenden, Cross, Fulton and 17 more5 hr
Sep 22, 8:35 AM CDTMesoscale DiscussionSPCArkansas, Bradley, Calhoun, Clark, Cleburne, Cleveland and 53 more85 min
Sep 22, 9:10 AM CDTTornado Watch PDSSPCArkansas, Baxter, Boone, Clark, Clay, Cleburne and 46 more9 hr
Sep 22, 11:10 AM CDTMesoscale DiscussionSPCBenton, Carroll, Crawford, Madison, Sebastian, Washington95 min
Sep 22, 12:15 PM CDTMesoscale DiscussionSPCArkansas, Baxter, Boone, Bradley, Calhoun, Carroll and 64 more90 min
Sep 22, 3:00 PM CDTMesoscale DiscussionSPCArkansas, Baxter, Benton, Boone, Carroll, Clark and 58 more90 min
Sep 22, 5:58 PM CDTMesoscale DiscussionSPCClark, Cleburne, Conway, Craighead, Crawford, Cross and 38 more92 min
Sep 22, 6:29 PM CDTTornado WatchSPCBaxter, Boone, Clay, Cleburne, Craighead, Fulton and 16 more7 hr
Sep 22, 12:49 PM CDTMesoscale DiscussionSPCBollinger, Callaway, Cape Girardeau, Carter, Crawford, Dent and 23 more2 hr
Sep 22, 1:16 PM CDTTornado WatchSPCAudrain, Bollinger, Boone, Butler, Callaway, Cape Girardeau and 31 more8 hr
Sep 22, 5:08 PM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 33 more2 hr

Nearby

Tornado Watches in Missouri, 2006Tornado Watches in Oklahoma, 2006Tornado Watches in Arkansas, 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.