Alert archive / Missouri / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 397
The Storm Prediction Center issued this severe thunderstorm watch at Jul 19, 2016, 2:18 PM CDT for 8 counties in Illinois; 8 counties in Iowa; 30 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 19, 2016, 2:18 PM CDT (19:18 UTC)
- Expired
- Jul 19, 2016, 8:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 46 counties
Appanoose County, IA, Davis County, IA, Decatur County, IA, Lucas County, IA, Monroe County, IA, Van Buren County, IA, Wapello County, IA, Wayne County, IA, Adams County, IL, Brown County, IL, Calhoun County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Pike County, IL, Adair County, MO, Audrain County, MO, Boone County, MO, Callaway County, MO, Chariton County, MO, City of Saint Louis, MO, Clark County, MO, Grundy County, MO, Harrison County, MO, Howard County, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Linn County, MO, Macon County, MO, Marion County, MO, Mercer County, MO, Monroe County, MO, Montgomery County, MO, Pike County, MO, Putnam County, MO, Ralls County, MO, Randolph County, MO, Saint Charles County, MO, Saint Louis County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO, Warren County, MO
The radar
The Pleasant Hill radar (KEAX), 209 km from the middle of the area, began a volume at 19:20 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
- 20%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 50%
- 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
- 30%
- Six or more combined severe hail and wind reports
- 70%
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 |
|---|---|---|---|---|
| Jul 19, 2:49 PM CDT | Severe Thunderstorm Warning | EAX | Putnam, Schuyler, Sullivan | 71 min |
| Jul 19, 2:57 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Lucas, Monroe, Wayne | 33 min |
| Jul 19, 2:59 PM CDT | Flash Flood Warning | DMX | Appanoose, Decatur, Lucas, Monroe, Wayne | 6 hr |
| Jul 19, 3:11 PM CDT | Tornado Warning | DMX | Monroe | 34 min |
| Jul 19, 3:21 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe, Wapello | 39 min |
| Jul 19, 3:24 PM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 57 min |
| Jul 19, 5:01 PM CDT | Severe Thunderstorm Warning | LSX | Ralls | 44 min |
| Jul 19, 5:27 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 48 min |
| Jul 19, 5:38 PM CDT | Severe Thunderstorm Warning | LSX | Brown | 37 min |
| Jul 19, 6:01 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 44 min |
| Jul 19, 6:11 PM CDT | Flash Flood Warning | LSX | Brown, Pike | 3 hr |
| Jul 19, 6:13 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 47 min |
| Jul 19, 6:46 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Pike | 44 min |
| Jul 19, 7:47 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun, Jersey | 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
Davenport, (KDVN), launched 12:00Z, 7.3 hours before the alert went out and 238 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
- 368 J/kg
- Mixed-layer CIN
- -136 J/kg
- Mixed-layer LCL
- 1025 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 5:47 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Greene, Jersey and 6 more | 58 min |
| Jul 19, 12:28 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Cass, Clarke and 26 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 2016Severe Thunderstorm Watches in Illinois, 2016Severe Thunderstorm Watches in Iowa, 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.