Alert archive / Missouri / Heat Advisories in 2026
Heat Advisory 7, NWS St. Louis, MO
NWS St. Louis, MO issued this heat advisory at Aug 9, 2026, 1:05 AM CDT for 16 counties in Missouri; 11 counties in Illinois. It took effect at Aug 9, 2026, 12:00 PM CDT. It was in force for 7 days.
The area
The counties it named.
The facts
- Issued
- Aug 9, 2026, 1:05 AM CDT (06:05 UTC)
- In effect from
- Aug 9, 2026, 12:00 PM CDT
- Expired
- Aug 16, 2026, 9:00 PM CDT
- In force
- 7 days
- Issued by
- NWS St. Louis, MO
All 27 counties
Adams County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Fayette County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Marion County, IL, Montgomery County, IL, Pike County, IL, Audrain County, MO, Crawford County, MO, Iron County, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Madison County, MO, Marion County, MO, Monroe County, MO, Pike County, MO, Ralls County, MO, Reynolds County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Shelby County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 33 km from the middle of the area, began a volume at 06:10 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 office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 1:05 AM CDT | Extreme Heat Warning | LSX | Boone, Callaway, Cole, Crawford, Franklin, Gasconade and 14 more | 8 days |
Nearby
Heat Advisories in Missouri, 2026Heat Advisories in Illinois, 2026Every heat advisory 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; radar from the NEXRAD Level II archive.