Weather Alerts For Saint Peters, MO

# HEADLINE -------------------- FLOOD ADVISORY IN EFFECT UNTIL 645 PM CDT THIS EVENING # DETAILS -------------------- WHAT Urban area and small stream flooding caused by excessive rainfall is expected. WHERE Central Saint Charles County in east central Missouri... WHEN Until 645 PM CDT. IMPACTS Minor flooding in low-lying and poor drainage areas. Water over roadways. Ponding of water in urban or other areas is occurring or is imminent. ADDITIONAL DETAILS - At 343 PM CDT, Doppler radar indicated heavy rain due to thunderstorms. This is causing urban and small stream flooding. Between 1 and 2 inches of rain have fallen. - SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE St. Charles, St. Peters, Weldon Spring, Cottleville, Harvester and Kampville. ISSUED AT Thursday, June 25, 2026 at 3:43 PM CDT ISSUED BY National Weather Service St Louis MO HEADER Flood Advisory # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. # AREAS AFFECTED -------------------- Saint Charles MO

A Weather Alert has been issued for a nearby area. While your current location is outside of the impacted area, please stay alert and monitor weather conditions. # SUMMARY -------------------- The National Weather Service in St Louis has issued a - Severe Thunderstorm Warning for... Central Saint Charles County in east central Missouri... North Central Saint Louis County in east central Missouri... - Until 430 PM CDT. - At 339 PM CDT, a severe thunderstorm was located over St. Charles, moving east at 10 mph. # DETAILS -------------------- HAZARD 60 mph wind gusts and quarter size hail. SOURCE Radar indicated. IMPACT Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. LOCATIONS IMPACTED INCLUDE St. Peters, St. Charles, Harvester, Maryland Heights, Bridgeton, Champ, Hazelwood, St. Ann, Lambert-St. Louis International Airport, Edmundson and Florissant. THIS INCLUDES THE FOLLOWING STATE PARKS - First Missouri State Capitol Historic Site. - This includes Interstate 70 in Missouri between exits 225 and 231. ISSUED AT Thursday, June 25, 2026 at 3:39 PM CDT ISSUED BY National Weather Service St Louis MO HEADER BULLETIN - IMMEDIATE BROADCAST REQUESTED | Severe Thunderstorm Warning # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail.

# HEADLINE -------------------- FLOOD WATCH NOW IN EFFECT THROUGH FRIDAY EVENING # DETAILS -------------------- WHAT Flash flooding caused by excessive rainfall continues to be possible. WHERE Portions of Illinois, including the following areas, Bond IL, Calhoun IL, Clinton IL, Fayette IL, Greene IL, Jersey IL, Macoupin IL, Madison IL, Marion IL, Monroe IL, Montgomery IL, Pike IL, Randolph IL, Saint Clair IL and Washington IL and Missouri, including the following areas, Audrain MO, Boone MO, Callaway MO, Cole MO, Crawford MO, Franklin MO, Gasconade MO, Iron MO, Jefferson MO, Lincoln MO, Madison MO, Moniteau MO, Montgomery MO, Osage MO, Pike MO, Reynolds MO, Saint Charles MO, Saint Francois MO, Saint Louis City MO, Saint Louis MO, Sainte Genevieve MO, Warren MO and Washington MO. WHEN Through Friday evening. IMPACTS Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. ADDITIONAL DETAILS - Multiple waves of thunderstorms capable of heavy rainfall. - SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE St. Louis, Columbia, O'Fallon, St. Charles, St. Peters, Florissant, Chesterfield, Belleville, Jefferson City, Wildwood, University City, Ballwin, Granite City, Wentzville, Alton, Kirkwood, Maryland Heights, East St. Louis and Hazelwood. ISSUED AT Thursday, June 25, 2026 at 2:55 PM CDT ISSUED BY National Weather Service St Louis MO HEADER URGENT - IMMEDIATE BROADCAST REQUESTED | Flood Watch # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. # AREAS AFFECTED -------------------- Gasconade MO, Madison IL, Marion IL, Moniteau MO, Saint Francois MO, Audrain MO, Bond IL, Boone MO, Calhoun IL, Callaway MO, Clinton IL, Cole MO, Crawford MO, Fayette IL, Franklin MO, Greene IL, Iron MO, Jefferson MO, Jersey IL, Lincoln MO, Macoupin IL, Madison MO, Monroe IL, Montgomery IL, Montgomery MO, Osage MO, Pike IL, Pike MO, Randolph IL, Reynolds MO, Saint Charles MO, Saint Clair IL, Saint Louis City MO, Saint Louis MO, Sainte Genevieve MO, Warren MO, Washington IL, Washington MO Including the cities of Salem, Pittsfield, Sullivan, Columbia, Cahokia, Mexico, Centralia, Jefferson City, Edwardsville, Vandalia, Union, Litchfield, Sparta, Alton, Fulton, Saint Charles, Washington, Belleville, Farmington, Bowling Green, Saint Louis, and Chester

Closest strike: 1.85 miles Stay Alert! Remain in a safe area until there has been no lightning within 10 miles of this location for 30 minutes. Please be aware that lightning activity can remain high even when a storm is moving away from your location. Even if rain has stopped, do not leave your safe area until WeatherBug indicates that lightning is more than 10 miles away from this selected location. IF OUTDOORS Avoid water, high ground, and open spaces. Avoid all metal objects including electric wires, fences, and machinery. Find a safe area in a building or in a fully enclosed vehicle with the windows completely shut. Unsafe places include underneath canopies, small picnic or rain shelters, convertibles, or near trees. IF INDOORS Avoid water and stay away from doors and windows. Avoid using a hard line telephone. Take off headphones. Turn off, unplug, and stay away from appliances, computers, power tools, and TV sets. Lightning may strike exterior electric and phone lines, inducing shocks to inside equipment.

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 AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE SOUTHERN HIGH PLAINS THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE CENTRAL/SOUTHERN PLAINS TO THE OZARKS...WYOMING...AND UPPER OHIO VALLEY SUMMARY Scattered severe thunderstorms are expected through this evening across parts of the southern/central Plains, with large hail and severe winds possible. A more focused corridor of tornado potential may exist this afternoon/evening across northern Oklahoma and southern Kansas, where a strong tornado may occur. 20Z Update The primary change with this update was the addition of an Enhanced risk (driven by CIG1 wind) across parts of western OK, the eastern TX Panhandle, and far south-central KS. Thunderstorms are evolving across the OK Panhandle and vicinity, ahead of a surface low/triple point. Current expectation is for this activity and additional storms to track east-southeastward through a hot/well-mixed air mass -- favorable for strengthening/expanding cold pools with time. Around 40 kt of effective shear should promote a mix of organized clusters and supercells tracking east-southeastward into increasingly rich boundary-layer moisture and a nocturnally strengthening low-level jet. This evolution should favor a swath of severe/damaging wind gusts (some upwards of 75 mph or greater). A focused corridor of relatively greater tornado potential is possible across parts of southwest KS into northwest OK -- along a recovering outflow boundary. There was some consideration for higher tornado probabilities here, though confidence in the exact corridor was too low for the upgrade at this time. Elsewhere, only minor adjustments were made to the severe probabilities based on the latest convective and environmental trends.