Weather Alerts For Centreville, IL

# HEADLINE -------------------- FLOOD WATCH REMAINS IN EFFECT FROM 1 PM CDT THIS AFTERNOON THROUGH FRIDAY MORNING # 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, Saint Clair IL and Washington IL and Missouri, including the following areas, Boone MO, Callaway MO, Cole MO, Crawford MO, Franklin MO, Gasconade MO, Jefferson MO, Lincoln MO, Moniteau MO, Montgomery MO, Osage MO, Saint Charles MO, Saint Louis City MO, Saint Louis MO, Warren MO and Washington MO. WHEN From 1 PM CDT this afternoon through Friday morning. 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 1:16 AM 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 -------------------- Crawford MO, Marion IL, Bond IL, Boone MO, Calhoun IL, Callaway MO, Clinton IL, Cole MO, Fayette IL, Franklin MO, Gasconade MO, Greene IL, Jefferson MO, Jersey IL, Lincoln MO, Macoupin IL, Madison IL, Moniteau MO, Monroe IL, Montgomery IL, Montgomery MO, Osage MO, Saint Charles MO, Saint Clair IL, Saint Louis City MO, Saint Louis MO, Warren MO, Washington IL, Washington MO Including the cities of Salem, Edwardsville, Cahokia, Saint Charles, Belleville, Vandalia, Alton, Jefferson City, Union, Centralia, Sullivan, Columbia, Washington, Saint Louis, Fulton, and Litchfield

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 THIS AFTERNOON INTO TONIGHT ACROSS PARTS OF THE SOUTHERN AND CENTRAL GREAT PLAINS SUMMARY One or two organizing clusters of storms, with potential to produce strong to severe wind gusts, are possible across parts of the Texas South Plains through central Great Plains late this afternoon into tonight. Isolated strong storm development preceding this activity across parts of north central Oklahoma into south central Kansas may pose a risk for a couple of tornadoes by early this evening. Discussion The westerlies are undergoing amplification across the mid-latitude Pacific. Later today into tonight, models indicate that this will include digging large-scale mid-level troughing on its leading edge, across and inland of the Pacific Northwest coast. Downstream, it appears that generally zonal flow will prevail across the northern and central tier of the U.S., to the north of ridging in the subtropical latitudes. Within this regime, mid-level troughing, accompanied by an area of modest height falls within otherwise rising heights, is forecast to turn eastward across the lower Great Lakes vicinity. Upstream, initially stronger mid-level height falls accompanying a short wave perturbation, and perhaps a notable embedded mesoscale convective vortex, may be in the process of overspreading the central Great Plains at the outset of the period, before continuing toward the lower Missouri Valley, amidst weak to modest larger-scale height rises late this afternoon through tonight. In lower levels, a broad weak surface low is forecast to migrate across the lower Great Lakes, with a an ill-defined trailing influx of cooler/drier air advancing a bit farther southward through the central Great Plains, and southeast of the Upper Midwest through the Great Lakes and adjacent portions of the Ohio Valley. It appears that surface troughing will deepen through the day to the lee of the southern Rockies, as strong heating occurs beneath a remnant plume of very warm elevated mixed-layer air across the southern Great Plains. Near the northern/northeastern periphery of this air mass, a zone of strong differential heating may develop by late afternoon, northeast of the Raton ridge into northern Oklahoma. This boundary might be augmented by outflow from a cluster of storms now evolving across northeastern Colorado into western Kansas. It appears that this boundary may retreat northward into portions of southern Kansas and Missouri tonight. Parts of southern/central Great Plains The potential convective evolution for today remains unclear, and severe weather potential will considerably be impacted by sub-synoptic developments, which remain unclear. This includes the subsequent evolution of the cluster of storms now propagating into northwestern Kansas, and another forming across the Texas Panhandle vicinity. However, guidance generally suggests that low-level convergence and destabilization within the lee surface trough across the Panhandle vicinity into Texas South Plains may provide support for widespread thunderstorm development by early this evening. And the boundary across the central Great Plans, reinforced by early day outflow and subsequent differential heating, may eventually become a focus for increasing thunderstorm development this evening into the overnight hours. A deeply mixed boundary layer across the Panhandle/South Plains vicinity may become unstable enough to support the risk for large hail, in addition to damaging wind gusts late this afternoon into evening. Low-level convergence/warm advection along the zone of differential surface heating might promote at least isolated supercell development somewhere across north central Oklahoma into south central Kansas, where a convectively augmented belt of westerly mid-level flow may contribute to strong shear. If this occurs, this may be accompanied by a period of increasing potential for a tornado or two by early evening, near the nose of a strengthening southerly 850 mb jet, before evolving into an upscale growing cluster with strong surface gusts becoming the primary potential hazard overnight. Lower Great Lakes Convection allowing model output is still not providing a clear signal for more than rather isolated pre-frontal strong to severe thunderstorm development. However, strengthening westerly flow in the 700-500 mb layer could become sufficient to support organized convective development, including supercells, with sufficient destabilization. Depending on model trends, it is still possible that probabilities could be increased in later outlooks for this period. Parts of central and southern Wyoming Latest convection allowing guidance suggests that thermodynamic profiles by this afternoon could become conducive to the evolution of an organizing cluster of storms with potential to produce strong to severe surface gusts, aided by forcing for ascent associated with a short wave perturbation emerging from the northern intermountain region.