Alert archive / Illinois / Tornado Watches in 2019
Tornado Watch 696
The Storm Prediction Center issued this tornado watch at Nov 26, 2019, 10:22 PM CST for 33 counties in Illinois; Perry County, Missouri. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 26, 2019, 10:22 PM CST (04:22 UTC)
- Expired
- Nov 27, 2019, 2:31 AM CST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 34 counties
Adams County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Cass County, IL, Christian County, IL, Clay County, IL, Clinton County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Greene County, IL, Hamilton County, IL, Jackson County, IL, Jefferson County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Menard 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, Schuyler County, IL, Scott County, IL, Shelby County, IL, Washington County, IL, Wayne County, IL, Perry County, MO
The radar
The St Louis radar (KLSX), 75 km from the middle of the area, began a volume at 04:25 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
- 30%
- One or more EF2 to EF5 tornadoes
- 20%
- 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
- 10%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 26, 10:37 PM CST | Tornado Warning | LSX | Clinton, Madison, Saint Clair | 38 min |
| Nov 26, 10:50 PM CST | Severe Thunderstorm Warning | ILX | Fulton, Schuyler | 40 min |
| Nov 26, 10:55 PM CST | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 35 min |
| Nov 26, 11:01 PM CST | Severe Thunderstorm Warning | LSX | Randolph | 29 min |
| Nov 26, 11:27 PM CST | Severe Thunderstorm Warning | ILX | Fulton, Schuyler | 30 min |
| Nov 26, 11:38 PM CST | Severe Thunderstorm Warning | ILX | Logan, Menard, Sangamon | 26 min |
| Nov 27, 12:02 AM CST | Severe Thunderstorm Warning | LSX | Marion | 28 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 00:00Z, 4.4 hours before the alert went out and 189 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
- 596 m above ground
- 0-6 km bulk shear
- 78 kt
- 0-1 km storm-relative helicity
- 417 m²/s²
- 0-3 km storm-relative helicity
- 467 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 |
|---|---|---|---|---|
| Nov 26, 9:32 PM CST | Mesoscale Discussion | SPC | Pike | 118 min |
| Nov 26, 11:32 PM CST | Mesoscale Discussion | SPC | Champaign, Clark, Coles, Cumberland, DeWitt, Douglas and 14 more | 118 min |
| Nov 26, 6:03 PM CST | Mesoscale Discussion | SPC | Audrain, Boone, Callaway, Camden, Christian, Cole and 27 more | 57 min |
| Nov 26, 6:20 PM CST | Tornado Watch | SPC | Audrain, Barry, Benton, Boone, Callaway, Camden and 49 more | 6 hr |
| Nov 26, 7:31 PM CST | Mesoscale Discussion | SPC | Butler, Carter, Howell, Oregon, Ripley | 119 min |
Nearby
Tornado Watches in Illinois, 2019Tornado Watches in Missouri, 2019Every tornado watch in 2019
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.