Alert archive / Missouri / Tornado Watches in 2008

Tornado Watch 312

May 13, 20084 states

The Storm Prediction Center issued this tornado watch at May 13, 2008, 5:09 PM CDT for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 13, 2008, 5:09 PM CDT (22:09 UTC)
Expired
May 13, 2008, 10:30 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
60 kt
All 39 counties

Benton County, AR, Washington County, AR, Allen County, KS, Anderson County, KS, Bourbon County, KS, Chautauqua County, KS, Cherokee County, KS, Crawford County, KS, Labette County, KS, Linn County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Woodson County, KS, Barry County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Cedar County, MO, Dade County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Polk County, MO, St. Clair County, MO, Vernon County, MO, Craig County, OK, Delaware County, OK, Mayes County, OK, Nowata County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Rogers County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 108 km from the middle of the area, began a volume at 22:09 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
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
50%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 13, 5:22 PM CDTSevere Thunderstorm WarningTSACreek, Osage, Tulsa38 min
May 13, 5:30 PM CDTSevere Thunderstorm WarningICTLabette, Montgomery, Neosho, Wilson34 min
May 13, 6:21 PM CDTSevere Thunderstorm WarningICTAllen, Neosho30 min
May 13, 6:33 PM CDTSevere Thunderstorm WarningICTAllen32 min
May 13, 6:36 PM CDTSevere Thunderstorm WarningSGFBourbon32 min
May 13, 6:57 PM CDTSevere Thunderstorm WarningEAXLinn15 min
May 13, 7:21 PM CDTSevere Thunderstorm WarningEAXBates39 min
May 13, 7:36 PM CDTSevere Thunderstorm WarningSGFBourbon54 min
May 13, 7:38 PM CDTTornado WarningSGFCherokee, Crawford52 min
May 13, 8:24 PM CDTTornado WarningSGFBarton, Cedar, Dade51 min
May 13, 8:52 PM CDTSevere Thunderstorm WarningTSARogers, Tulsa, Wagoner26 min
May 13, 8:55 PM CDTSevere Thunderstorm WarningSGFBenton50 min
May 13, 9:10 PM CDTTornado WarningSGFBarton, Cedar, Dade35 min
May 13, 9:43 PM CDTSevere Thunderstorm WarningSGFBenton, Morgan47 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, 10.2 hours before the alert went out and 131 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 2008-05-13Temperature 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, Springfield, MO at 12:00Z on 2008-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 601 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1608 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
601 m²/s²
0-3 km storm-relative helicity
642 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 13, 6:07 AM CDTMesoscale DiscussionSPCClay, Craighead, Greene, Lawrence, Mississippi, Randolph83 min
May 13, 6:26 AM CDTMesoscale DiscussionSPCBenton, Crawford, Franklin, Polk, Scott, Sebastian and 1 more94 min
May 13, 9:37 AM CDTMesoscale DiscussionSPCCalhoun, Clark, Columbia, Hempstead, Lafayette, Little River and 5 more53 min
May 13, 4:51 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Chautauqua, Cherokee, Coffey and 14 more84 min
May 13, 1:25 PM CDTMesoscale DiscussionSPCCarter, Cleveland, Cotton, Garvin, Jefferson, Love and 3 more3 hr
May 13, 2:03 PM CDTTornado WatchSPCAdair, Atoka, Bryan, Carter, Cherokee, Choctaw and 28 more9 hr
May 13, 5:50 PM CDTMesoscale DiscussionSPCAdair, Atoka, Bryan, Carter, Cherokee, Choctaw and 26 more115 min

Nearby

Tornado Watches in Missouri, 2008Tornado Watches in Kansas, 2008Tornado Watches in Oklahoma, 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.