Alert archive / Missouri / Severe Thunderstorm Watches in 2014
Severe Thunderstorm Watch 487
The Storm Prediction Center issued this severe thunderstorm watch at Sep 1, 2014, 5:57 PM CDT for 7 counties in Illinois; 5 counties in Kansas; 55 counties in Missouri. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 1, 2014, 5:57 PM CDT (22:57 UTC)
- Expired
- Sep 2, 2014, 1:53 AM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 65 kt
All 67 counties
Calhoun County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Monroe County, IL, Saint Clair County, IL, Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Linn County, KS, Miami County, KS, Audrain County, MO, Barry County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Boone County, MO, Callaway County, MO, Camden County, MO, Cass County, MO, Cedar County, MO, Christian County, MO, City of Saint Louis, MO, Cole County, MO, Cooper County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Franklin County, MO, Gasconade County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Iron County, MO, Jasper County, MO, Jefferson County, MO, Johnson County, MO, Laclede County, MO, Lawrence County, MO, Lincoln County, MO, Maries County, MO, McDonald County, MO, Miller County, MO, Moniteau County, MO, Montgomery County, MO, Morgan County, MO, Newton County, MO, Osage County, MO, Pettis County, MO, Phelps County, MO, Pike County, MO, Polk County, MO, Pulaski County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, St. Clair County, MO, Stone County, MO, Texas County, MO, Vernon County, MO, Warren County, MO, Washington County, MO, Webster County, MO, Wright County, MO
The radar
The Springfield radar (KSGF), 106 km from the middle of the area, began a volume at 22:58 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
- 10%
- One or more EF2 to EF5 tornadoes
- 5%
- 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
- 70%
Warnings issued inside it
26 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 6:37 PM CDT | Severe Thunderstorm Warning | SGF | Cedar, St. Clair, Vernon | 53 min |
| Sep 1, 6:47 PM CDT | Severe Thunderstorm Warning | SGF | Cherokee | 45 min |
| Sep 1, 7:10 PM CDT | Tornado Warning | SGF | Cedar, Polk | 37 min |
| Sep 1, 7:42 PM CDT | Severe Thunderstorm Warning | SGF | Bourbon, Crawford | 32 min |
| Sep 1, 7:46 PM CDT | Severe Thunderstorm Warning | SGF | Dallas, Hickory, Polk | 59 min |
| Sep 1, 8:12 PM CDT | Severe Thunderstorm Warning | SGF | Cherokee | 23 min |
| Sep 1, 8:44 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 46 min |
| Sep 1, 8:53 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Warren | 52 min |
| Sep 1, 8:53 PM CDT | Severe Thunderstorm Warning | SGF | Hickory, Polk, St. Clair | 20 min |
| Sep 1, 9:04 PM CDT | Severe Thunderstorm Warning | EAX | Johnson, Miami | 41 min |
| Sep 1, 9:07 PM CDT | Flash Flood Warning | LSX | Boone, Callaway, Moniteau | 4 hr |
| Sep 1, 9:26 PM CDT | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Madison | 49 min |
| Sep 1, 10:21 PM CDT | Severe Thunderstorm Warning | SGF | Cherokee | 39 min |
| Sep 1, 10:26 PM CDT | Flash Flood Warning | EAX | Cooper, Howard, Pettis | 3 hr |
| Sep 1, 10:33 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Louis | 42 min |
| Sep 1, 10:35 PM CDT | Severe Thunderstorm Warning | EAX | Henry, Johnson | 40 min |
| Sep 1, 10:43 PM CDT | Tornado Warning | LSX | Jefferson, Saint Louis | 32 min |
| Sep 1, 10:49 PM CDT | Severe Thunderstorm Warning | SGF | Benton | 41 min |
| Sep 1, 10:54 PM CDT | Severe Thunderstorm Warning | SGF | Cherokee | 51 min |
| Sep 1, 11:07 PM CDT | Tornado Warning | LSX | Monroe, Saint Clair | 23 min |
| Sep 1, 11:14 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 25 min |
| Sep 1, 11:22 PM CDT | Severe Thunderstorm Warning | SGF | Barry, Jasper, Lawrence, McDonald, Newton | 38 min |
| Sep 1, 11:53 PM CDT | Severe Thunderstorm Warning | SGF | Barry, Lawrence | 37 min |
| Sep 2, 12:06 AM CDT | Severe Thunderstorm Warning | SGF | Christian, Greene, Lawrence | 26 min |
| Sep 2, 12:08 AM CDT | Flash Flood Warning | LSX | Boone, Callaway, Moniteau, Montgomery | 8 hr |
| Sep 2, 12:47 AM CDT | Flash Flood Warning | SGF | Cherokee, Crawford | 6 hr |
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, 11.0 hours before the alert went out and 152 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 959 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- -344 m²/s²
- 0-3 km storm-relative helicity
- -142 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 8:14 PM CDT | Severe Thunderstorm Watch | SPC | Atchison, Doniphan, Johnson, Leavenworth, Linn, Miami and 1 more | 8 hr |
| Aug 31, 9:39 PM CDT | Mesoscale Discussion | SPC | Anderson, Atchison, Barton, Chase, Coffey, Dickinson and 32 more | 96 min |
| Sep 1, 12:02 AM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Barton, Butler, Chase, Coffey and 22 more | 88 min |
| Sep 1, 2:16 PM CDT | Mesoscale Discussion | SPC | Barber, Chautauqua, Cherokee, Cowley, Elk, Harper and 6 more | 2 hr |
| Sep 1, 3:33 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Butler, Chautauqua, Cowley, Elk, Greenwood and 8 more | 7 hr |
| Sep 1, 6:46 PM CDT | Mesoscale Discussion | SPC | Chautauqua, Cherokee, Cowley, Crawford, Elk, Harper and 6 more | 89 min |
| Aug 31, 7:12 PM CDT | Tornado Watch | SPC | Andrew, Atchison, Gentry, Harrison, Holt, Mercer and 2 more | 6 hr |
| Aug 31, 9:09 PM CDT | Mesoscale Discussion | SPC | Adair, Caldwell, Daviess, DeKalb, Gentry, Grundy and 8 more | 96 min |
| Sep 1, 3:51 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Benton, Camden, Cedar, Christian and 34 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 2014Severe Thunderstorm Watches in Illinois, 2014Severe Thunderstorm Watches in Kansas, 2014Every severe thunderstorm watch in 2014
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.