Alert archive / Missouri / Tornado Watches in 2010

Tornado Watch 765

December 31, 20105 counties in Arkansas; 30 counties in Missouri; 18 counties in Oklahoma

The Storm Prediction Center issued this tornado watch at Dec 31, 2010, 1:03 AM CST for 5 counties in Arkansas; 30 counties in Missouri; 18 counties in Oklahoma. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Dec 31, 2010, 1:03 AM CST (07:03 UTC)
Expired: Dec 31, 2010, 8:00 AM CST
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1 in
Strongest gust expected: 60 kt

All 53 counties

Benton County, AR, Carroll County, AR, Crawford County, AR, Madison County, AR, Washington County, AR, Barry County, MO, Barton County, MO, Benton 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, Jasper County, MO, Laclede County, MO, Lawrence County, MO, Maries County, MO, McDonald County, MO, Miller County, MO, Morgan County, MO, Newton County, MO, Ozark County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Springfield radar (KSGF), 60 km from the middle of the area, began a volume at 07:06 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: 30%
One or more EF2 to EF5 tornadoes: 20%
Ten or more severe wind reports: 20%
One or more gusts of 65 knots or more: 5%
Ten or more severe hail reports: 10%
One or more hailstones of 2 inches or more: 5%
Six or more combined severe hail and wind reports: 40%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Dec 31, 1:19 AM CST	Severe Thunderstorm Warning	SGF	Camden, Laclede, Pulaski	41 min
Dec 31, 1:43 AM CST	Severe Thunderstorm Warning	SGF	Laclede, Wright	32 min
Dec 31, 1:48 AM CST	Flash Flood Warning	SGF	Camden, Laclede, Pulaski, Wright	5 hr
Dec 31, 1:55 AM CST	Severe Thunderstorm Warning	SGF	Maries, Miller, Phelps, Pulaski	35 min
Dec 31, 2:02 AM CST	Severe Thunderstorm Warning	SGF	Camden, Laclede, Pulaski	43 min
Dec 31, 2:09 AM CST	Severe Thunderstorm Warning	SGF	Maries, Phelps	36 min
Dec 31, 2:26 AM CST	Severe Thunderstorm Warning	SGF	Maries, Miller, Phelps, Pulaski	34 min
Dec 31, 2:37 AM CST	Severe Thunderstorm Warning	TSA	Osage, Pawnee	38 min
Dec 31, 2:46 AM CST	Severe Thunderstorm Warning	SGF	Maries, Phelps	29 min
Dec 31, 3:30 AM CST	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	45 min
Dec 31, 4:06 AM CST	Severe Thunderstorm Warning	TSA	Creek, Okfuskee, Okmulgee	39 min
Dec 31, 4:15 AM CST	Severe Thunderstorm Warning	TSA	McIntosh, Okfuskee, Pittsburg	45 min
Dec 31, 4:31 AM CST	Tornado Warning	TSA	McIntosh, Pittsburg	29 min
Dec 31, 4:57 AM CST	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee	48 min
Dec 31, 5:21 AM CST	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Muskogee	39 min
Dec 31, 5:54 AM CST	Severe Thunderstorm Warning	TSA	Benton, Washington	51 min
Dec 31, 5:55 AM CST	Severe Thunderstorm Warning	TSA	Crawford, Washington	50 min
Dec 31, 6:00 AM CST	Tornado Warning	TSA	Benton, Washington	30 min
Dec 31, 6:12 AM CST	Tornado Warning	TSA	Crawford, Washington	33 min
Dec 31, 6:22 AM CST	Tornado Warning	TSA	Benton, Washington	23 min
Dec 31, 6:32 AM CST	Severe Thunderstorm Warning	SGF	Barton, Cedar, Dade, Jasper	43 min
Dec 31, 6:35 AM CST	Tornado Warning	TSA	Madison, Washington	25 min
Dec 31, 6:50 AM CST	Tornado Warning	TSA	Benton, Madison, Washington	25 min
Dec 31, 7:03 AM CST	Severe Thunderstorm Warning	SGF	Cedar, Dade, Polk	42 min
Dec 31, 7:06 AM CST	Tornado Warning	TSA	Benton, Carroll, Madison, Washington	39 min
Dec 31, 7:15 AM CST	Severe Thunderstorm Warning	TSA	Crawford	30 min
Dec 31, 7:20 AM CST	Severe Thunderstorm Warning	SGF	Barry, Christian, Stone	25 min
Dec 31, 7:25 AM CST	Severe Thunderstorm Warning	SGF	Benton, Hickory, St. Clair	45 min
Dec 31, 7:33 AM CST	Tornado Warning	SGF	Barry, Christian, Stone	27 min
Dec 31, 7:34 AM CST	Tornado Warning	SGF	Barry, Stone, Taney	41 min
Dec 31, 7:36 AM CST	Tornado Warning	SGF	Hickory, Polk	39 min
Dec 31, 7:39 AM CST	Severe Thunderstorm Warning	TSA	Crawford, Madison, Washington	36 min
Dec 31, 7:41 AM CST	Tornado Warning	TSA	Carroll	19 min
Dec 31, 7:52 AM CST	Severe Thunderstorm Warning	TSA	Crawford, Sebastian	38 min
Dec 31, 7:56 AM CST	Severe Thunderstorm Warning	SGF	Christian, Greene, Webster	34 min
Dec 31, 7:57 AM CST	Tornado Warning	SGF	Benton, Hickory	12 min
Dec 31, 7:59 AM CST	Tornado Warning	TSA	Crawford, Madison, Washington	31 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 00:00Z, 7.1 hours before the alert went out and 25 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 783 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 315 m²/s²
0-3 km storm-relative helicity: 285 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 30, 8:52 PM CST	Mesoscale Discussion	SPC	Crawford, Franklin, Hempstead, Howard, Little River, Logan and 8 more	113 min
Dec 31, 12:44 AM CST	Mesoscale Discussion	SPC	Benton, Boone, Carroll, Madison, Marion, Washington	61 min
Dec 31, 3:27 AM CST	Mesoscale Discussion	SPC	Benton, Carroll	2 hr
Dec 31, 4:56 AM CST	Mesoscale Discussion	SPC	Arkansas, Clay, Cleburne, Cleveland, Craighead, Cross and 25 more	2 hr
Dec 31, 5:45 AM CST	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Conway and 25 more	2 hr
Dec 31, 7:29 AM CST	Tornado Watch	SPC	Baxter, Benton, Boone, Carroll, Clark, Cleburne and 31 more	8 hr
Dec 31, 10:36 AM CST	Mesoscale Discussion	SPC	Columbia, Hempstead, Lafayette, Miller, Nevada	114 min
Dec 31, 11:04 AM CST	Mesoscale Discussion	SPC	Clay, Craighead, Greene	56 min
Dec 31, 11:42 AM CST	Tornado Watch	SPC	Clay, Craighead, Greene, Lawrence, Mississippi, Poinsett and 1 more	7 hr
Dec 31, 1:34 PM CST	Tornado Watch	SPC	Ashley, Chicot	6 hr
Dec 31, 3:58 PM CST	Tornado Watch	SPC	Ashley, Chicot, Crittenden, Cross, Lee, Phillips and 1 more	7 hr
Dec 31, 5:35 PM CST	Mesoscale Discussion	SPC	Arkansas, Crittenden, Desha, Lee, Mississippi, Phillips and 1 more	115 min
Dec 31, 2:25 AM CST	Severe Thunderstorm Watch	SPC	Crawford, Franklin, Gasconade, Jefferson, Osage, Saint Charles and 4 more	2 hr
Dec 31, 3:56 AM CST	Mesoscale Discussion	SPC	Andrew, Buchanan, Caldwell, Clay, Clinton, Daviess and 3 more	3 hr
Dec 31, 4:05 AM CST	Mesoscale Discussion	SPC	Franklin, Jefferson, Saint Charles, Saint Louis, City of Saint Louis	115 min
Dec 31, 2:12 PM CST	Mesoscale Discussion	SPC	Cape Girardeau, Mississippi, New Madrid, Pemiscot, Scott, Stoddard	93 min

Nearby

Tornado Watches in Missouri, 2010 Tornado Watches in Oklahoma, 2010 Tornado Watches in Arkansas, 2010 Every tornado watch in 2010

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.