Alert archive / Missouri / Flood Watches in 2026
Flood Watch 6, NWS St. Louis, MO
NWS St. Louis, MO issued this flood watch at Jun 10, 2026, 10:44 AM CDT for 4 counties in Missouri; Adams County, Brown County, Pike County, Illinois. It took effect at Jun 10, 2026, 1:00 PM CDT. It was in force for 14 hr.
The area
The counties it named.
The facts
- Issued
- Jun 10, 2026, 10:44 AM CDT (15:44 UTC)
- In effect from
- Jun 10, 2026, 1:00 PM CDT
- Expired
- Jun 11, 2026, 2:53 AM CDT
- In force
- 14 hr
- Issued by
- NWS St. Louis, MO
- Flood severity
- None
Counties Adams County, IL, Brown County, IL, Pike County, IL, Knox County, MO, Lewis County, MO, Marion County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 152 km from the middle of the area, began a volume at 15:47 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, 3.7 hours before the alert went out and 247 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
- 1372 J/kg
- Mixed-layer CIN
- -173 J/kg
- Mixed-layer LCL
- 1070 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- -58 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 10, 6:27 AM CDT, 4 hours 17 minutes earlier.
Area forecast discussion, Jun 10, 6:27 AM CDT, 4 hours 17 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 10, 12:24 PM CDT | Areal Flood Advisory | LSX | Knox, Lewis, Shelby | 53 min |
| Jun 10, 1:17 PM CDT | Flash Flood Warning | LSX | Shelby | 3 hr |
| Jun 10, 3:46 PM CDT | Severe Thunderstorm Warning | LSX | Marion, Monroe, Ralls, Shelby | 44 min |
| Jun 10, 6:42 PM CDT | Tornado Warning | LSX | Knox | 49 min |
| Jun 10, 4:58 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 18 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.