⚠️ Severe Thunderstorm Warning – Callaway, MO; Gasconade, MO; Montgomery, MO; Osage, MO – Wednesday, August 12, 2026

Severe Thunderstorm Warning issued August 12 at 4:21PM CDT until August 12 at 5:00PM CDT by NWS St Louis MO

Details

SVRLSX

The National Weather Service in St Louis has issued a

* Severe Thunderstorm Warning for…
East Central Callaway County in central Missouri…
Northeastern Osage County in central Missouri…
Northwestern Gasconade County in east central Missouri…
Southwestern Montgomery County in east central Missouri…

* Until 500 PM CDT.

* At 421 PM CDT, a severe thunderstorm was located 6 miles east of
Chamois, or 13 miles west of Hermann, moving southeast at 20 mph.

HAZARD…60 mph wind gusts and half dollar size hail.

SOURCE…Radar indicated.

IMPACT…Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.

* Locations impacted include…
Chamois, Portland, Morrison, Rhineland, Gasconade, Hermann and Bay.

This includes the following State Parks…
Deutschheim Historic Site.

Instructions

Seek shelter inside a well-built structure and stay away from
windows. This storm is capable of producing damaging winds and large
hail.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.