Alert archive / Missouri / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 132
The Storm Prediction Center issued this severe thunderstorm watch at Apr 30, 2016, 3:59 PM CDT for 19 counties in Arkansas; 16 counties in Illinois; 30 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 30, 2016, 3:59 PM CDT (20:59 UTC)
- Expired
- Apr 30, 2016, 10:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 50 kt
All 65 counties
Baxter County, AR, Boone County, AR, Cleburne County, AR, Conway County, AR, Faulkner County, AR, Fulton County, AR, Izard County, AR, Johnson County, AR, Logan County, AR, Marion County, AR, Newton County, AR, Perry County, AR, Pope County, AR, Scott County, AR, Searcy County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Yell County, AR, Bond County, IL, Brown County, IL, Calhoun County, IL, Clinton County, IL, Fayette County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Pike County, IL, Randolph County, IL, Saint Clair County, IL, Washington County, IL, City of Saint Louis, MO, Crawford County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Gasconade County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Maries County, MO, Montgomery County, MO, Oregon County, MO, Osage County, MO, Ozark County, MO, Phelps County, MO, Pike County, MO, Pulaski County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Shannon County, MO, Taney County, MO, Texas County, MO, Warren County, MO, Washington County, MO, Wright County, MO
The radar
The St Louis radar (KLSX), 147 km from the middle of the area, began a volume at 20:59 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
- 10%
- 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
- 50%
Warnings issued inside it
38 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 4:45 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Marion | 45 min |
| Apr 30, 4:53 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Pike | 52 min |
| Apr 30, 5:08 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 17 min |
| Apr 30, 5:42 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Marion | 48 min |
| Apr 30, 5:49 PM CDT | Severe Thunderstorm Warning | LZK | Pope, Yell | 31 min |
| Apr 30, 5:49 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 41 min |
| Apr 30, 6:01 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Marion | 29 min |
| Apr 30, 6:08 PM CDT | Severe Thunderstorm Warning | SGF | Ozark | 52 min |
| Apr 30, 6:14 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Fulton, Izard | 46 min |
| Apr 30, 6:37 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey, Madison | 38 min |
| Apr 30, 6:41 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 49 min |
| Apr 30, 6:46 PM CDT | Severe Thunderstorm Warning | SGF | Douglas, Howell, Ozark, Texas | 44 min |
| Apr 30, 6:48 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 42 min |
| Apr 30, 6:52 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Pope | 38 min |
| Apr 30, 7:02 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Louis | 43 min |
| Apr 30, 7:05 PM CDT | Tornado Warning | LZK | Conway | 25 min |
| Apr 30, 7:10 PM CDT | Severe Thunderstorm Warning | LZK | Boone, Marion, Newton, Searcy | 28 min |
| Apr 30, 7:17 PM CDT | Severe Thunderstorm Warning | SGF | Dent, Shannon, Texas | 43 min |
| Apr 30, 7:25 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 50 min |
| Apr 30, 7:27 PM CDT | Severe Thunderstorm Warning | LZK | Conway, Faulkner | 33 min |
| Apr 30, 7:28 PM CDT | Severe Thunderstorm Warning | SGF | Douglas, Howell, Texas | 35 min |
| Apr 30, 7:32 PM CDT | Tornado Warning | LZK | Conway, Faulkner | 28 min |
| Apr 30, 7:38 PM CDT | Severe Thunderstorm Warning | LZK | Marion, Searcy | 52 min |
| Apr 30, 7:40 PM CDT | Severe Thunderstorm Warning | LZK | Fulton, Izard | 50 min |
| Apr 30, 7:41 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Iron, Washington | 49 min |
| Apr 30, 7:43 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 47 min |
| Apr 30, 7:52 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Izard, Marion | 23 min |
| Apr 30, 7:56 PM CDT | Tornado Warning | LZK | Conway, Faulkner | 11 min |
| Apr 30, 8:09 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison, Saint Clair | 51 min |
| Apr 30, 8:19 PM CDT | Severe Thunderstorm Warning | SGF | Dent | 11 min |
| Apr 30, 8:25 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 50 min |
| Apr 30, 8:29 PM CDT | Severe Thunderstorm Warning | LZK | Fulton, Izard, Sharp | 46 min |
| Apr 30, 8:31 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Monroe, Saint Clair, Washington | 44 min |
| Apr 30, 8:34 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Iron, Washington | 41 min |
| Apr 30, 8:35 PM CDT | Severe Thunderstorm Warning | LZK | Izard, Stone | 25 min |
| Apr 30, 9:02 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Fulton | 26 min |
| Apr 30, 9:15 PM CDT | Severe Thunderstorm Warning | LZK | Fulton, Sharp | 45 min |
| Apr 30, 9:17 PM CDT | Severe Thunderstorm Warning | LZK | Izard, Sharp | 43 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, 9.0 hours before the alert went out and 216 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
- 194 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 485 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 252 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 8:56 PM CDT | Mesoscale Discussion | SPC | Bradley, Calhoun, Columbia, Hempstead, Lafayette, Little River and 4 more | 94 min |
| Apr 29, 9:58 PM CDT | Severe Thunderstorm Watch | SPC | Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more | 7 hr |
| Apr 29, 11:42 PM CDT | Mesoscale Discussion | SPC | Bradley, Columbia, Lafayette, Little River, Miller, Nevada and 2 more | 93 min |
| Apr 30, 3:23 AM CDT | Mesoscale Discussion | SPC | Calhoun, Union | 97 min |
| Apr 30, 3:02 PM CDT | Mesoscale Discussion | SPC | Baxter, Boone, Conway, Johnson, Logan, Marion and 5 more | 118 min |
Nearby
Severe Thunderstorm Watches in Missouri, 2016Severe Thunderstorm Watches in Arkansas, 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.