Alert archive / Missouri / Tornado Watches in 2024

Tornado Watch 204

May 8, 202418 counties in Illinois; 17 counties in Kentucky; 21 counties in Missouri

The Storm Prediction Center issued this tornado watch at May 8, 2024, 10:29 AM CDT for 18 counties in Illinois; 17 counties in Kentucky; 21 counties in Missouri. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued: May 8, 2024, 10:29 AM CDT (15:29 UTC)
Expired: May 8, 2024, 6:52 PM CDT
In force: 8 hr
Issued by: the Storm Prediction Center
Largest hail expected: 3 in
Strongest gust expected: 70 kt

All 56 counties

Alexander County, IL, Franklin County, IL, Gallatin County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Massac County, IL, Monroe County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Saint Clair County, IL, Saline County, IL, Union County, IL, Washington County, IL, Williamson County, IL, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, Muhlenberg County, KY, Todd County, KY, Trigg County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Crawford County, MO, Franklin County, MO, Gasconade County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Washington County, MO, Wayne County, MO

The radar

The St Louis radar (KLSX), 107 km from the middle of the area, began a volume at 15:32 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: 70%
One or more EF2 to EF5 tornadoes: 40%
Ten or more severe wind reports: 80%
One or more gusts of 65 knots or more: 70%
Ten or more severe hail reports: 80%
One or more hailstones of 2 inches or more: 80%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
May 8, 10:58 AM CDT	Tornado Warning	LSX	Crawford, Franklin, Gasconade	47 min
May 8, 11:10 AM CDT	Severe Thunderstorm Warning	PAH	Union	35 min
May 8, 11:27 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Franklin, Jefferson	48 min
May 8, 11:35 AM CDT	Flash Flood Warning	LSX	Crawford, Franklin, Gasconade	3 hr
May 8, 11:35 AM CDT	Tornado Warning	LSX	Crawford, Franklin, Washington	40 min
May 8, 11:57 AM CDT	Severe Thunderstorm Warning	PAH	Christian	48 min
May 8, 12:11 PM CDT	Tornado Warning	LSX	Franklin, Jefferson, Washington	49 min
May 8, 12:28 PM CDT	Severe Thunderstorm Warning	PAH	Christian, Muhlenberg, Todd	47 min
May 8, 12:34 PM CDT	Severe Thunderstorm Warning	PAH	Franklin, Jackson	29 min
May 8, 12:46 PM CDT	Tornado Warning	PAH	Todd	29 min
May 8, 12:48 PM CDT	Flash Flood Warning	LSX	Franklin, Jefferson, Saint Louis, Washington	3 hr
May 8, 12:56 PM CDT	Tornado Warning	LSX	Monroe, Randolph	49 min
May 8, 1:10 PM CDT	Severe Thunderstorm Warning	PAH	Graves, Livingston, Lyon, McCracken, Marshall	34 min
May 8, 1:11 PM CDT	Severe Thunderstorm Warning	PAH	Caldwell, Lyon, Trigg	49 min
May 8, 1:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Monroe, Randolph	47 min
May 8, 1:18 PM CDT	Tornado Warning	PAH	Graves, Livingston, McCracken, Marshall	16 min
May 8, 1:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Saint Francois, Washington	61 min
May 8, 1:36 PM CDT	Tornado Warning	LSX	Sainte Genevieve, Saint Francois, Washington	39 min
May 8, 1:42 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Randolph, Saint Clair	35 min
May 8, 1:42 PM CDT	Severe Thunderstorm Warning	PAH	Caldwell, Christian, Hopkins, Muhlenberg	48 min
May 8, 1:47 PM CDT	Severe Thunderstorm Warning	PAH	Caldwell, Crittenden, Union, Webster	43 min
May 8, 1:55 PM CDT	Tornado Warning	LSX	Randolph	50 min
May 8, 2:00 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	60 min
May 8, 2:10 PM CDT	Severe Thunderstorm Warning Considerable damage threat	PAH	Hopkins, McLean, Muhlenberg	50 min
May 8, 2:14 PM CDT	Severe Thunderstorm Warning Considerable damage threat	PAH	Jackson, Perry	61 min
May 8, 2:21 PM CDT	Severe Thunderstorm Warning	PAH	Perry	39 min
May 8, 2:23 PM CDT	Severe Thunderstorm Warning	PAH	Christian, Muhlenberg	37 min
May 8, 2:27 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve, Saint Francois	33 min
May 8, 2:28 PM CDT	Severe Thunderstorm Warning	PAH	Calloway, Trigg	47 min
May 8, 2:35 PM CDT	Severe Thunderstorm Warning	PAH	Gallatin, Hardin	40 min
May 8, 2:36 PM CDT	Severe Thunderstorm Warning	PAH	Fulton, Graves, Hickman	39 min
May 8, 2:39 PM CDT	Severe Thunderstorm Warning	PAH	Massac, Pope	51 min
May 8, 2:44 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Randolph	18 min
May 8, 2:57 PM CDT	Severe Thunderstorm Warning	PAH	Hopkins, McLean, Webster	48 min
May 8, 3:00 PM CDT	Severe Thunderstorm Warning	PAH	Jackson, Perry	45 min
May 8, 3:02 PM CDT	Tornado Warning	PAH	Jackson	28 min
May 8, 3:09 PM CDT	Flash Flood Warning	PAH	Jackson, Perry	3 hr
May 8, 3:10 PM CDT	Severe Thunderstorm Warning	PAH	Christian, Trigg	50 min
May 8, 3:11 PM CDT	Tornado Warning	PAH	Williamson	34 min
May 8, 3:13 PM CDT	Severe Thunderstorm Warning	PAH	Calloway, Graves	62 min
May 8, 3:15 PM CDT	Severe Thunderstorm Warning	PAH	Johnson, Massac, Pope	30 min
May 8, 3:19 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	PAH	Williamson	29 min
May 8, 3:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	PAH	Franklin, Jackson, Jefferson, Perry, Williamson	51 min
May 8, 3:35 PM CDT	Tornado Warning	PAH	Christian, Trigg	40 min
May 8, 3:39 PM CDT	Tornado Warning	PAH	Pope	19 min
May 8, 3:44 PM CDT	Severe Thunderstorm Warning Considerable damage threat	PAH	Franklin, Hamilton, Saline, Williamson	46 min
May 8, 3:48 PM CDT	Flash Flood Warning	PAH	Christian, Todd, Trigg	14 hr
May 8, 3:56 PM CDT	Tornado Warning	PAH	Johnson, Union	18 min
May 8, 3:56 PM CDT	Tornado Warning	PAH	Trigg	14 min
May 8, 3:57 PM CDT	Flash Flood Warning	PAH	Franklin, Williamson	4 hr
May 8, 4:05 PM CDT	Severe Thunderstorm Warning Considerable damage threat	PAH	Christian, Todd	40 min
May 8, 4:08 PM CDT	Severe Thunderstorm Warning	PAH	Christian, Trigg	52 min
May 8, 4:09 PM CDT	Severe Thunderstorm Warning	PAH	Caldwell, Christian, Hopkins	51 min
May 8, 4:13 PM CDT	Tornado Warning	PAH	Gallatin, Saline	32 min
May 8, 4:17 PM CDT	Tornado Warning Tornado observed	PAH	Johnson, Pope, Saline, Williamson	28 min
May 8, 4:18 PM CDT	Tornado Warning	PAH	Hardin	27 min
May 8, 4:23 PM CDT	Tornado Warning	PAH	Caldwell, Christian	37 min
May 8, 4:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Crawford	55 min
May 8, 4:35 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Washington	40 min
May 8, 4:44 PM CDT	Tornado Warning	PAH	Hardin	46 min
May 8, 4:48 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	42 min
May 8, 4:52 PM CDT	Severe Thunderstorm Warning	PAH	Caldwell, Christian, Hopkins, Muhlenberg	38 min
May 8, 4:53 PM CDT	Flash Flood Warning	PAH	Gallatin, Saline	4 hr
May 8, 4:54 PM CDT	Severe Thunderstorm Warning	LSX	Washington	51 min
May 8, 5:00 PM CDT	Severe Thunderstorm Warning	LSX	Monroe	29 min
May 8, 5:10 PM CDT	Severe Thunderstorm Warning	PAH	Hopkins, Union, Webster	50 min
May 8, 5:11 PM CDT	Flash Flood Warning Considerable damage threat	PAH	Hardin	4 hr
May 8, 5:12 PM CDT	Tornado Warning	PAH	Christian	19 min
May 8, 5:13 PM CDT	Flash Flood Warning	LSX	Jefferson	4 hr
May 8, 5:22 PM CDT	Severe Thunderstorm Warning	PAH	Hardin, Pope	53 min
May 8, 5:28 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Madison, Montgomery, Saint Clair	47 min
May 8, 5:30 PM CDT	Severe Thunderstorm Warning	LSX	Saint Francois, Washington	45 min
May 8, 5:34 PM CDT	Tornado Warning	PAH	Livingston	14 min
May 8, 5:34 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	41 min
May 8, 5:46 PM CDT	Severe Thunderstorm Warning	PAH	Hopkins, McLean, Muhlenberg, Webster	59 min
May 8, 5:50 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Randolph	40 min
May 8, 6:08 PM CDT	Tornado Warning	LSX	Monroe, Randolph	52 min
May 8, 6:09 PM CDT	Severe Thunderstorm Warning	PAH	Caldwell, Crittenden, Hopkins, Livingston, Lyon, Union and 1 more	51 min
May 8, 6:12 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Sainte Genevieve, Saint Francois, Washington	63 min
May 8, 6:27 PM CDT	Severe Thunderstorm Warning Considerable damage threat	PAH	Perry	63 min
May 8, 6:29 PM CDT	Severe Thunderstorm Warning	LSX	Clinton, Saint Clair, Washington	46 min
May 8, 6:39 PM CDT	Tornado Warning	PAH	Perry	51 min
May 8, 6:45 PM CDT	Severe Thunderstorm Warning	PAH	Caldwell, Christian, Hopkins, Muhlenberg	45 min
May 8, 6:50 PM CDT	Severe Thunderstorm Warning	PAH	Jefferson	55 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, 3.5 hours before the alert went out and 300 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: 1972 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: -112 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 7, 9:20 PM CDT	Mesoscale Discussion	SPC	Crawford, Edwards, Lawrence, Wabash	55 min
May 7, 11:16 PM CDT	Mesoscale Discussion	SPC	Gallatin, Hamilton, Hardin, Pope, Saline, Wabash and 1 more	119 min
May 8, 1:26 AM CDT	Mesoscale Discussion	SPC	Alexander, Gallatin, Hardin, Johnson, Massac, Pope and 2 more	2 hr
May 8, 1:57 AM CDT	Tornado Watch	SPC	Alexander, Massac, Pope, Pulaski	4 hr
May 8, 11:28 AM CDT	Mesoscale Discussion	SPC	Alexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 9 more	92 min
May 8, 11:35 AM CDT	Mesoscale Discussion	SPC	Alexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 9 more	85 min
May 8, 12:58 PM CDT	Mesoscale Discussion	SPC	Edwards, Franklin, Gallatin, Hamilton, Hardin, Jefferson and 10 more	62 min
May 8, 1:13 PM CDT	Tornado Watch	SPC	Hamilton, White	10 hr
May 8, 1:50 PM CDT	Mesoscale Discussion	SPC	Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 12 more	55 min
May 8, 3:41 PM CDT	Mesoscale Discussion	SPC	Alexander, Gallatin, Hardin, Jackson, Johnson, Massac and 5 more	94 min
May 8, 4:42 PM CDT	Tornado Watch	SPC	Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 15 more	9 hr
May 7, 8:17 PM CDT	Tornado Watch	SPC	Boyd, Carter, Greenup	7 hr
May 8, 7:50 AM CDT	Mesoscale Discussion	SPC	Calloway, Graves, McCreary, Trigg, Whitley	2 hr
May 8, 5:51 PM CDT	Mesoscale Discussion	SPC	Adair, Allen, Barren, Boyle, Butler, Casey and 18 more	114 min
May 8, 6:29 PM CDT	Mesoscale Discussion	SPC	Butler, Caldwell, Christian, Daviess, Hopkins, Lyon and 4 more	91 min
May 8, 12:56 AM CDT	Tornado Watch	SPC	Dunklin, Pemiscot	5 hr
May 8, 6:14 AM CDT	Mesoscale Discussion	SPC	Bates, Benton, Camden, Cass, Cole, Cooper and 11 more	2 hr
May 8, 6:50 AM CDT	Severe Thunderstorm Watch	SPC	Andrew, Barton, Bates, Benton, Boone, Buchanan and 39 more	10 hr
May 8, 8:58 AM CDT	Mesoscale Discussion	SPC	Benton, Bollinger, Butler, Camden, Cape Girardeau, Carter and 44 more	92 min
May 8, 11:01 AM CDT	Mesoscale Discussion	SPC	Barry, Barton, Cedar, Christian, Dade, Dallas and 17 more	89 min
May 8, 11:59 AM CDT	Tornado Watch	SPC	Barry, Barton, Camden, Cedar, Christian, Dade and 24 more	7 hr
May 8, 1:16 PM CDT	Mesoscale Discussion	SPC	Barry, McDonald, Newton, Stone	2 hr
May 8, 3:50 PM CDT	Mesoscale Discussion	SPC	Barry, Camden, Christian, Dade, Dallas, Douglas and 15 more	115 min
May 8, 5:59 PM CDT	Mesoscale Discussion	SPC	Barry, Christian, Douglas, Howell, McDonald, Stone and 4 more	91 min

Nearby

Tornado Watches in Missouri, 2024 Tornado Watches in Illinois, 2024 Tornado Watches in Kentucky, 2024 Every tornado watch in 2024

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.