Alert archive / Missouri / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 106
The Storm Prediction Center issued this severe thunderstorm watch at Apr 26, 2016, 11:52 AM CDT for 24 counties in Illinois; 41 counties in Missouri. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 26, 2016, 11:52 AM CDT (16:52 UTC)
- Expired
- Apr 26, 2016, 7:01 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 65 counties
Bond County, IL, Calhoun County, IL, Christian County, IL, Clay County, IL, Clinton County, IL, Effingham County, IL, Fayette County, IL, Greene County, IL, Jackson County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Perry County, IL, Pike County, IL, Randolph County, IL, Saint Clair County, IL, Sangamon County, IL, Scott County, IL, Shelby County, IL, Washington County, IL, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, City of Saint Louis, MO, Crawford County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Gasconade County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Laclede County, MO, Lincoln County, MO, Madison County, MO, Maries County, MO, Monroe County, MO, Montgomery County, MO, Oregon County, MO, Perry County, MO, Phelps County, MO, Pike County, MO, Polk County, MO, Pulaski County, MO, Ralls County, MO, Reynolds County, MO, Ripley County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Shannon County, MO, Stoddard County, MO, Texas County, MO, Warren County, MO, Washington County, MO, Wayne County, MO, Webster County, MO, Wright County, MO
The radar
The St Louis radar (KLSX), 31 km from the middle of the area, began a volume at 16:55 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
- 2%
- Ten or more severe wind reports
- 70%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 12:17 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Callaway, Franklin, Gasconade, Lincoln, Montgomery and 2 more | 58 min |
| Apr 26, 1:01 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade, Montgomery, Saint Charles, Warren and 1 more | 45 min |
| Apr 26, 1:29 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Saint Charles, Saint Louis | 50 min |
| Apr 26, 1:38 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Louis | 27 min |
| Apr 26, 2:00 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 45 min |
| Apr 26, 2:27 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 48 min |
| Apr 26, 3:01 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Madison, Saint Clair, Washington | 31 min |
| Apr 26, 3:40 PM CDT | Severe Thunderstorm Warning | PAH | Jefferson, Perry | 50 min |
| Apr 26, 4:02 PM CDT | Severe Thunderstorm Warning | PAH | Franklin, Jackson, Perry | 43 min |
| Apr 26, 4:04 PM CDT | Severe Thunderstorm Warning | SGF | Greene, Webster | 41 min |
| Apr 26, 4:44 PM CDT | Severe Thunderstorm Warning | SGF | Webster, Wright | 46 min |
| Apr 26, 4:48 PM CDT | Severe Thunderstorm Warning | PAH | Cape Girardeau | 27 min |
| Apr 26, 5:39 PM CDT | Severe Thunderstorm Warning | PAH | Stoddard | 10 min |
| Apr 26, 6:30 PM CDT | Severe Thunderstorm Warning | SGF | Douglas, Howell, Texas, Wright | 45 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
Lincoln, IL (KILX), launched 12:00Z, 4.9 hours before the alert went out and 272 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
- 449 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 792 m above ground
- 0-6 km bulk shear
- 0 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 10:03 AM CDT | Mesoscale Discussion | SPC | Calhoun, Greene, Jersey, Monroe, Randolph, Saint Clair | 117 min |
| Apr 26, 12:58 PM CDT | Mesoscale Discussion | SPC | Crawford, Lawrence | 3 hr |
| Apr 26, 2:42 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Clay, Clinton, Edwards, Fayette and 23 more | 2 hr |
| Apr 26, 3:03 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Clark, Coles, Crawford, Cumberland, Edgar and 19 more | 6 hr |
| Apr 26, 2:18 AM CDT | Mesoscale Discussion | SPC | Andrew, Buchanan, Caldwell, Carroll, Cass, Clay and 12 more | 117 min |
| Apr 26, 4:37 AM CDT | Mesoscale Discussion | SPC | Buchanan, Cass, Clay, Clinton, Jackson, Johnson and 4 more | 83 min |
| Apr 26, 6:23 AM CDT | Severe Thunderstorm Watch | SPC | Andrew, Audrain, Bates, Benton, Boone, Buchanan and 30 more | 7 hr |
| Apr 26, 7:18 AM CDT | Mesoscale Discussion | SPC | Andrew, Boone, Buchanan, Caldwell, Carroll, Chariton and 16 more | 87 min |
| Apr 26, 6:14 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, Clay, Clinton, DeKalb and 3 more | 61 min |
Nearby
Severe Thunderstorm Watches in Missouri, 2016Severe Thunderstorm Watches in Illinois, 2016Every severe thunderstorm watch in 2016
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.