Alert archive / Missouri / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 481
The Storm Prediction Center issued this severe thunderstorm watch at Aug 7, 2013, 2:12 AM CDT for 22 counties in Kansas; 32 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 7, 2013, 2:12 AM CDT (07:12 UTC)
- Expired
- Aug 7, 2013, 7:53 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 54 counties
Anderson County, KS, Bourbon County, KS, Cherokee County, KS, Coffey County, KS, Crawford County, KS, Douglas County, KS, Franklin County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Miami County, KS, Morris County, KS, Osage County, KS, Pottawatomie County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee County, KS, Wyandotte County, KS, Barton County, MO, Bates County, MO, Benton County, MO, Camden County, MO, Cass County, MO, Cedar County, MO, Clay County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Laclede County, MO, Lawrence County, MO, Maries County, MO, Miller County, MO, Morgan County, MO, Pettis County, MO, Phelps County, MO, Platte County, MO, Polk County, MO, Pulaski County, MO, Shannon County, MO, St. Clair County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO
The radar
The Pleasant Hill radar (KEAX), 95 km from the middle of the area, began a volume at 07:15 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
- 5%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 20%
- 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
- 50%
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 2:30 AM CDT | Severe Thunderstorm Warning | SGF | Bourbon, Cherokee, Crawford | 60 min |
| Aug 7, 2:45 AM CDT | Flash Flood Warning | SGF | Dent, Shannon | 5 hr |
| Aug 7, 2:57 AM CDT | Severe Thunderstorm Warning | TOP | Geary, Morris, Pottawatomie, Riley, Wabaunsee | 33 min |
| Aug 7, 2:59 AM CDT | Flash Flood Warning | SGF | Benton, Morgan | 5 hr |
| Aug 7, 3:07 AM CDT | Flash Flood Warning | SGF | Bourbon | 5 hr |
| Aug 7, 3:38 AM CDT | Severe Thunderstorm Warning | SGF | Maries, Miller, Pulaski | 52 min |
| Aug 7, 4:19 AM CDT | Flash Flood Warning | SGF | Camden | 4 hr |
| Aug 7, 4:20 AM CDT | Flash Flood Warning | EAX | Pettis | 5 hr |
| Aug 7, 4:34 AM CDT | Flash Flood Warning | SGF | Phelps, Pulaski, Texas | 7 hr |
| Aug 7, 5:38 AM CDT | Flash Flood Warning | SGF | Laclede, Wright | 4 hr |
| Aug 7, 5:49 AM CDT | Severe Thunderstorm Warning | SGF | Laclede, Texas, Wright | 56 min |
| Aug 7, 6:21 AM CDT | Severe Thunderstorm Warning | SGF | Douglas, Howell, Shannon, Texas | 39 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
Topeka, KS (KFOE), launched 00:00Z, 7.2 hours before the alert went out and 80 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.
- Mixed-layer CAPE
- 3444 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 980 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 10.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 9:36 PM CDT | Mesoscale Discussion | SPC | Allen, Butler, Chautauqua, Cowley, Elk, Greenwood and 9 more | 54 min |
| Aug 6, 9:53 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Butler, Chase, Chautauqua, Cowley, Elk and 17 more | 5 hr |
| Aug 7, 1:51 AM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Bourbon, Brown, Clay and 22 more | 54 min |
| Aug 7, 3:45 PM CDT | Mesoscale Discussion | SPC | Morton, Seward, Stanton, Stevens | 105 min |
| Aug 7, 5:32 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Finney, Ford, Grant, Gray, Greeley and 9 more | 7 hr |
| Aug 6, 9:37 PM CDT | Mesoscale Discussion | SPC | Adair, Andrew, Atchison, Clark, Daviess, Gentry and 12 more | 113 min |
| Aug 7, 2:41 AM CDT | Mesoscale Discussion | SPC | Adair, Clark, Grundy, Harrison, Knox, Mercer and 4 more | 2 hr |
| Aug 7, 5:32 AM CDT | Mesoscale Discussion | SPC | Adair, Clark, Grundy, Harrison, Knox, Mercer and 4 more | 103 min |
| Aug 7, 6:36 AM CDT | Mesoscale Discussion | SPC | Bollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 20 more | 114 min |
Nearby
Severe Thunderstorm Watches in Missouri, 2013Severe Thunderstorm Watches in Kansas, 2013Every severe thunderstorm watch in 2013
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.