Weather Alerts For Bismarck, MO

# HEADLINE -------------------- HEAT ADVISORY IN EFFECT FROM NOON SUNDAY TO MIDNIGHT CDT THURSDAY NIGHT # DETAILS -------------------- WHAT Heat index values over 100 expected. WHERE Portions of south central, southwest, and west central Illinois and central, east central, northeast, and southeast Missouri. WHEN From noon Sunday to midnight CDT Thursday Night. IMPACTS Hot temperatures and high humidity may cause heat illnesses. ISSUED AT Saturday, June 27, 2026 at 1:59 AM CDT ISSUED BY National Weather Service St Louis MO HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. # AREAS AFFECTED -------------------- Calhoun IL, Franklin MO, Marion IL, Adams IL, Audrain MO, Bond IL, Boone MO, Brown IL, Callaway MO, Clinton IL, Cole MO, Crawford MO, Fayette IL, Gasconade MO, Greene IL, Iron MO, Jersey IL, Knox MO, Lewis MO, Lincoln MO, Macoupin IL, Madison MO, Marion MO, Moniteau MO, Monroe MO, Montgomery IL, Montgomery MO, Osage MO, Pike IL, Pike MO, Ralls MO, Randolph IL, Reynolds MO, Saint Francois MO, Sainte Genevieve MO, Shelby MO, Warren MO, Washington IL, Washington MO Including the cities of Farmington, Vandalia, Columbia, Jefferson City, Sparta, Union, Hannibal, Chester, Washington, Fulton, Pittsfield, Mexico, Mount Sterling, Salem, Bowling Green, Litchfield, Centralia, Quincy, and Sullivan

Closest strike: 25.4 miles Monitor Storms You are not at immediate risk, but frequently check WeatherBug to see if storms are moving towards you. Be aware that new storms can also form with little notice.

There is a Marginal Severe Storm Risk for your location. Continue reading for today's outlook from the National Weather Service's Storm Prediction Center. -------------------- National Severe Storm Outlook THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS INTO EARLY TONIGHT FROM THE HIGH PLAINS INTO NORTHERN OKLAHOMA AND SOUTHERN MISSOURI SUMMARY Scattered severe thunderstorms with severe outflow gusts and large hail will persist into early tonight across the High Plains and from northern Oklahoma into southern Missouri. Northern OK to southern MO Multiple strong-severe storms formed late this afternoon along a stalled front from the northeast TX Panhandle eastward into northern OK into southern MO. Seasonably high moisture content in the boundary layer (dewpoints in the low-mid 70s) and lingering warm temperatures are contributing to MLCAPE near 3000 J/kg with only weak convective inhibition, while vertical shear is sufficient for supercells with large hail (1 to 2 inches in diameter). Storms will likely persist into tonight as a result of cell interactions and an increase in warm advection with a strengthening low-level jet, immediately downstream from a subtle midlevel trough now approaching northwest OK. The stronger cells/clusters will be capable of isolated large hail and occasional severe outflow gusts of 60-70 mph as storms spread slowly southeastward across northern/central/northeast OK. A similar environment extends into southern MO along and south of the stalled front, with a few ongoing cells/clusters. There has been some localized tornado threat across south central MO where a discrete storm or two are interacting with a zone of slightly enhanced low-level shear in a moist environment, though the tornado threat will remain localized/marginal. High Plains Widely scattered storm clusters formed this afternoon and continue to develop this evening with interacting outflows from MT across eastern WY/NE Panhandle into eastern CO and the western OK Panhandle on the west edge of the moisture in a largely upslope flow regime. This corridor is downstream from a pronounced midlevel trough over the Great Basin/Pacific Northwest, which will encourage a nocturnal low-level jet to support some persistence of storms into early tonight, despite weakening buoyancy and increasing inhibition with eastward extent. Occasional severe outflow gusts and large hail will be the main threats. Potential for storms to maintain a wind/hail threat a little deeper into the overnight hours will be across southwest KS and vicinity. The storm clusters spreading eastward from CO will encounter somewhat richer low-level moisture (mid-upper 60s dewpoints) on the immediate cool side of a stalled front, coincident with a nocturnal increase in the low-level jet and associated warm advection. KY area A remnant MCV is moving eastward over western KY with the primary storm cluster from far southern IN into central KY on the leading edge of the ascent. These storms have exhibited a primarily linear mode with a trailing cold pool into western KY. Earlier discrete storms have since weakened while moving atop the rain-cooled air, though a few storms may persist into early tonight in the warm advection regime on the southwest flank of the MCV. The primary severe threat appears to be isolated wind damage with the leading line segments across central/northern KY for the next 1-2 hours before boundary-layer stabilization weakens the storms.