Alert archive / Missouri / Flood Watches in 2026
Flood Watch 9, NWS St. Louis, MO
NWS St. Louis, MO issued this flood watch at Jun 24, 2026, 11:53 AM CDT for 23 counties in Missouri; 15 counties in Illinois. It took effect at Jun 25, 2026, 1:00 PM CDT. It was in force for 37 hr.
The area
The counties it named.
The facts
- Issued
- Jun 24, 2026, 11:53 AM CDT (16:53 UTC)
- In effect from
- Jun 25, 2026, 1:00 PM CDT
- Expired
- Jun 27, 2026, 1:58 AM CDT
- In force
- 37 hr
- Issued by
- NWS St. Louis, MO
- Flood severity
- None
All 38 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, Boone County, MO, Callaway County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Franklin County, MO, Gasconade County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Moniteau County, MO, Montgomery County, MO, Osage County, MO, Pike County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Warren County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 12 km from the middle of the area, began a volume at 16:52 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.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 4.9 hours before the alert went out and 246 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
- 1288 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS St. Louis, MO wrote its last area forecast discussion before this flood watch went out at Jun 24, 6:25 AM CDT, 5 hours 28 minutes earlier.
Area forecast discussion, Jun 24, 6:25 AM CDT, 5 hours 28 minutes before
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</html>The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 5:10 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 35 min |
| Jun 24, 5:45 PM CDT | Severe Thunderstorm Warning | LSX | Greene, Jersey, Macoupin | 45 min |
Nearby
Flood Watches in Missouri, 2026Flood Watches in Illinois, 2026Every flood 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.