Alert archive / Missouri / Tornado Watches in 2026
Tornado Watch 52
The Storm Prediction Center issued this tornado watch at Mar 15, 2026, 1:33 PM CDT for 15 counties in Illinois; 40 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 15, 2026, 1:33 PM CDT (18:33 UTC)
- Expired
- Mar 15, 2026, 7:34 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 65 kt
All 55 counties
Bond 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, Audrain County, MO, Callaway County, MO, Camden County, MO, Christian County, MO, City of Saint Louis, MO, Cole County, 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, Laclede County, MO, Lincoln County, MO, Madison County, MO, Maries County, MO, Miller County, MO, Montgomery County, MO, Oregon County, MO, Osage County, MO, Ozark County, MO, Phelps County, MO, Pike County, MO, Pulaski County, MO, Ralls County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Shannon County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Warren County, MO, Washington County, MO, Webster County, MO, Wright County, MO
The radar
The St Louis radar (KLSX), 53 km from the middle of the area, began a volume at 18:35 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
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 30%
- 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
- 70%
Warnings issued inside it
34 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 15, 1:55 PM CDT | Severe Thunderstorm Warning | SGF | Camden, Maries, Miller | 23 min |
| Mar 15, 2:10 PM CDT | Severe Thunderstorm Warning | SGF | Christian, Stone, Taney | 32 min |
| Mar 15, 2:57 PM CDT | Severe Thunderstorm Warning | SGF | Dent, Douglas, Howell, Oregon, Phelps, Pulaski and 3 more | 48 min |
| Mar 15, 3:02 PM CDT | Severe Thunderstorm Warning | SGF | Douglas, Howell, Oregon, Ozark, Taney | 43 min |
| Mar 15, 3:11 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Warren | 49 min |
| Mar 15, 3:39 PM CDT | Severe Thunderstorm Warning | SGF | Douglas, Howell, Ozark, Texas, Wright | 51 min |
| Mar 15, 3:40 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 35 min |
| Mar 15, 3:42 PM CDT | Tornado Warning | SGF | Douglas, Howell, Texas | 33 min |
| Mar 15, 3:44 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 46 min |
| Mar 15, 3:48 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Gasconade, Washington | 42 min |
| Mar 15, 3:56 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey | 58 min |
| Mar 15, 3:57 PM CDT | Tornado Warning | SGF | Shannon, Texas | 33 min |
| Mar 15, 3:59 PM CDT | Tornado Warning | LSX | Calhoun, Jersey | 33 min |
| Mar 15, 4:05 PM CDT | Tornado Warning | SGF | Shannon, Texas | 25 min |
| Mar 15, 4:10 PM CDT | Tornado Warning | SGF | Dent, Shannon | 32 min |
| Mar 15, 4:23 PM CDT | Severe Thunderstorm Warning | SGF | Howell, Oregon, Shannon | 52 min |
| Mar 15, 4:24 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Iron, Reynolds, Washington | 57 min |
| Mar 15, 4:28 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis, City of Saint Louis | 47 min |
| Mar 15, 4:47 PM CDT | Tornado Warning | LSX | Saint Louis, City of Saint Louis | 23 min |
| Mar 15, 4:52 PM CDT | Tornado Warning | SGF | Oregon, Shannon | 28 min |
| Mar 15, 5:01 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Monroe, Saint Clair | 44 min |
| Mar 15, 5:05 PM CDT | Tornado Warning | LSX | Madison, Saint Clair | 34 min |
| Mar 15, 5:07 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve, Saint Francois | 38 min |
| Mar 15, 5:09 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 36 min |
| Mar 15, 5:13 PM CDT | Tornado Warning | LSX | Sainte Genevieve, Saint Francois | 32 min |
| Mar 15, 5:19 PM CDT | Tornado Warning | LSX | Monroe, Saint Clair | 47 min |
| Mar 15, 5:27 PM CDT | Severe Thunderstorm Warning | LSX | Reynolds | 15 min |
| Mar 15, 5:28 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Randolph, Saint Clair | 47 min |
| Mar 15, 5:31 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Montgomery | 44 min |
| Mar 15, 5:34 PM CDT | Tornado Warning | LSX | Monroe, Randolph, Saint Clair | 34 min |
| Mar 15, 5:51 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Washington | 54 min |
| Mar 15, 5:54 PM CDT | Tornado Warning | LSX | Clinton, Washington | 37 min |
| Mar 15, 6:03 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 13 min |
| Mar 15, 6:23 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 58 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, 6.6 hours before the alert went out and 290 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
- 1382 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 389 m²/s²
- 0-3 km storm-relative helicity
- 410 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 |
|---|---|---|---|---|
| Mar 15, 12:23 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Clinton, Greene, Jackson, Jersey and 13 more | 2 hr |
| Mar 15, 3:27 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 8 more | 93 min |
| Mar 15, 3:43 PM CDT | Tornado Watch | SPC | Cass, Champaign, Christian, Clark, Clay, Coles and 23 more | 5 hr |
| Mar 15, 3:57 PM CDT | Tornado Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 7 hr |
| Mar 15, 5:16 PM CDT | Mesoscale Discussion | SPC | Iroquois, Kankakee | 59 min |
| Mar 15, 5:42 PM CDT | Severe Thunderstorm Watch | SPC | Ford, Iroquois, Kankakee, Livingston | 6 hr |
| Mar 15, 5:47 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Clark, Clay, Clinton, Coles and 22 more | 88 min |
| Mar 15, 6:43 PM CDT | Mesoscale Discussion | SPC | Alexander, Massac, Pulaski, Union | 2 hr |
Nearby
Tornado Watches in Missouri, 2026Tornado Watches in Illinois, 2026Every tornado watch in 2026
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.