Alert archive / Illinois / Tornado Watches in 2022

Tornado Watch 248

May 19, 20224 states

The Storm Prediction Center issued this tornado watch at May 19, 2022, 4:39 PM CDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: May 19, 2022, 4:39 PM CDT (21:39 UTC)
Expired: May 19, 2022, 11:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 65 kt

All 65 counties

Alexander County, IL, Bond County, IL, Clay County, IL, Clinton County, IL, Crawford County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Johnson County, IL, Lawrence County, IL, Madison County, IL, Marion County, IL, Massac County, IL, Monroe County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Gibson County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY, City of Saint Louis, MO, Mississippi County, MO, Saint Charles County, MO, Saint Louis County, MO

The radar

The Paducah radar (KPAH), 105 km from the middle of the area, began a volume at 21:39 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: 40%
One or more EF2 to EF5 tornadoes: 20%
Ten or more severe wind reports: 70%
One or more gusts of 65 knots or more: 50%
Ten or more severe hail reports: 30%
One or more hailstones of 2 inches or more: 20%
Six or more combined severe hail and wind reports: 90%

Warnings issued inside it

24 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
May 19, 4:55 PM CDT	Tornado Warning	LSX	Saint Charles, Saint Louis	35 min
May 19, 5:06 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Randolph, Saint Clair	39 min
May 19, 5:16 PM CDT	Tornado Warning	LSX	Madison, Saint Clair	29 min
May 19, 5:19 PM CDT	Tornado Warning	LSX	Jersey, Madison	26 min
May 19, 5:27 PM CDT	Severe Thunderstorm Warning	LSX	Clinton, Monroe, Randolph, Saint Clair, Washington	63 min
May 19, 5:43 PM CDT	Severe Thunderstorm Warning	PAH	Perry	32 min
May 19, 5:46 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Macoupin, Madison	44 min
May 19, 6:01 PM CDT	Severe Thunderstorm Warning Considerable damage threat	PAH	Jefferson	44 min
May 19, 6:07 PM CDT	Tornado Warning	LSX	Bond, Clinton	38 min
May 19, 6:12 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Fayette, Marion	53 min
May 19, 6:28 PM CDT	Tornado Warning	LSX	Bond, Fayette, Montgomery	24 min
May 19, 6:32 PM CDT	Tornado Warning	LSX	Marion	31 min
May 19, 6:44 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Cumberland, Effingham, Jasper, Shelby	46 min
May 19, 6:57 PM CDT	Tornado Warning	ILX	Clay, Effingham	33 min
May 19, 8:58 PM CDT	Severe Thunderstorm Warning	PAH	Edwards, Hamilton, Wayne, White	47 min
May 19, 9:09 PM CDT	Severe Thunderstorm Warning	ILX	Crawford, Lawrence	36 min
May 19, 9:23 PM CDT	Severe Thunderstorm Warning	PAH	Wabash	52 min
May 19, 9:32 PM CDT	Tornado Warning	PAH	Wabash	11 min
May 19, 9:37 PM CDT	Tornado Warning	PAH	Wabash	10 min
May 19, 9:39 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence, Richland	37 min
May 19, 9:50 PM CDT	Tornado Warning	ILX	Lawrence	25 min
May 19, 9:57 PM CDT	Severe Thunderstorm Warning	PAH	Gibson, Pike	33 min
May 19, 10:10 PM CDT	Severe Thunderstorm Warning	PAH	Gibson, Pike, Posey, Vanderburgh, Warrick	38 min
May 19, 10:26 PM CDT	Severe Thunderstorm Warning	PAH	Gibson, Pike	34 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, 9.7 hours before the alert went out and 240 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1850 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 19, 10:05 AM CDT	Mesoscale Discussion	SPC	Bond, Calhoun, Clay, Clinton, Edwards, Effingham and 27 more	2 hr
May 19, 12:17 PM CDT	Mesoscale Discussion	SPC	Alexander, Clinton, Franklin, Hamilton, Jackson, Jefferson and 10 more	2 hr
May 19, 2:35 PM CDT	Mesoscale Discussion	SPC	Alexander, Franklin, Jackson, Johnson, Monroe, Perry and 5 more	115 min
May 19, 5:10 PM CDT	Mesoscale Discussion	SPC	Edwards, Wabash, Wayne, White	2 hr
May 19, 1:18 PM CDT	Mesoscale Discussion	SPC	Brown, Clark, Crawford, Daviess, Dubois, Floyd and 20 more	2 hr
May 19, 1:36 PM CDT	Severe Thunderstorm Watch	SPC	Brown, Clark, Crawford, Daviess, Dubois, Floyd and 18 more	5 hr
May 19, 6:21 PM CDT	Mesoscale Discussion	SPC	Crawford, Dubois, Floyd, Harrison, Perry	54 min
May 18, 7:57 PM CDT	Mesoscale Discussion	SPC	Adair, Bell, Casey, Clay, Clinton, Cumberland and 10 more	93 min
May 19, 3:38 PM CDT	Severe Thunderstorm Watch	SPC	Bath, Bell, Breathitt, Clay, Elliott, Estill and 27 more	5 hr
May 19, 12:51 PM CDT	Tornado Watch	SPC	Barry, Bollinger, Butler, Camden, Cape Girardeau, Carter and 39 more	6 hr

Nearby

Tornado Watches in Illinois, 2022 Tornado Watches in Kentucky, 2022 Tornado Watches in Indiana, 2022 Every tornado watch in 2022

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.