Weather Alerts For South Holland, IL

URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Chicago IL 1204 PM CDT Tue Mar 10 2026 Kane-DuPage-La Salle-Kendall-Grundy-Kankakee-Northern Cook- Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will-Lake IN-Porter- Including the cities of Mokena, Ottawa, Lemont, Lombard, Des Plaines, Oak Forest, Bolingbrook, Orland Park, Oswego, Naperville, Merrillville, Portage, Palatine, Bourbonnais, Beecher, Aurora, Joliet, Bradley, Northbrook, Oak Park, Plano, Calumet City, Manhattan, Carol Stream, Downers Grove, Gary, Valparaiso, Peotone, Chicago, Oak Lawn, Crete, La Salle, Chesterton, Coal City, Schaumburg, Wheaton, Kankakee, Plainfield, La Grange, Cicero, Yorkville, Park Forest, Mendota, Streator, Minooka, Morris, Evanston, Hammond, Wilmington, Marseilles, Elgin, and Channahon 1204 PM CDT Tue Mar 10 2026 ...FLOOD WATCH IN EFFECT FROM EARLY THIS AFTERNOON THROUGH LATE TONIGHT... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of Illinois, including the following areas, Central Cook, DuPage, Eastern Will, Grundy, Kane, Kankakee, Kendall, La Salle, Northern Cook, Northern Will, Southern Cook and Southern Will and northwest Indiana, including the following areas, Lake IN and Porter. * WHEN...Through late tonight. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Underpasses may be flooded. Roads and streets may be flooded. * ADDITIONAL DETAILS... - Multiple rounds of showers and thunderstorms with rainfall rates up to 1 to 2 inches per hour will be possible from late this afternoon until late this evening. The highest chance for flooding will be in urban areas and locations that received heavy rainfall over the last several days. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... A Flood Watch for flash flooding means rapid-onset flooding is possible, but not yet certain, based upon the latest forecasts. Flash flooding is a dangerous situation. Persons with interests along area rivers, creeks, and other waterways should monitor the latest forecasts and be prepared to take action should flooding develop. &&

There is a Enhanced 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 MODERATE RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF NORTHERN/CENTRAL ILLINOIS INTO NORTHWEST INDIANA THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF WEST/CENTRAL TX INTO SOUTHWEST OK...AND THE MIDWEST INTO THE SOUTHERN GREAT LAKES SUMMARY Scattered to numerous severe thunderstorms are expected today and tonight from the southern Plains to the southern Great Lakes vicinity. All severe hazards are likely, including the risk for multiple strong to intense tornadoes, damaging winds, and very large hail. Midwest/Southern Great Lakes/Ohio Valley A weak surface low over eastern KS late this morning will translate northeastward along a front towards northern IL through tonight. Low-level warm/moist advection will continue today across the Midwest/OH Valley into the southern Great Lakes, where surface dewpoints of at least low to mid 60s will likely be present by this evening. Large-scale ascent across this region will remain fairly nebulous, as an upper trough ejects eastward over the northern Plains. Still, a strengthening low-level jet across MO into IL/IN from late afternoon into this evening should promote scattered supercell development along/near the front in north-central IL. Moderate to locally strong instability, steep mid-level lapse rates, and strong deep-layer shear will all contribute to a very favorable environment for significant severe potential. Very large hail (2+ inches in diameter) will be possible with initial supercells. Effective SRH and related low-level shear will markedly increase around 11/00Z and later in tandem with the strengthening low-level jet. The supercellular tornado threat is likewise expected to quickly increase through the late afternoon/evening, as enlarged/curved low-level hodographs will easily support intense low-level rotation. A focused corridor along and just south of the front will have the best potential for multiple strong to intense tornadoes (EF2-3+). Accordingly, greater tornado probabilities (15%) and a categorical Moderate Risk have been included across parts of northern/central IL into northwest IN with this update. Convection should eventually grow upscale along/near the front late this evening into the early morning hours on Wednesday. But, the threat for tornadoes and severe/damaging winds will likely continue with eastward extent across the Midwest/OH Valley, as both sufficient instability and strong low-level/deep-layer shear will be present across the warm sector. Texas into Oklahoma A closed mid/upper-level low over northern Mexico will move eastward across the Southwest and southern High Plains by this evening while devolving into an open wave. Enhanced southwesterly flow aloft and pronounced large-scale ascent preceding the upper trough will encourage robust thunderstorm development by mid to late afternoon along the length of a surface dryline extending southward across much of west TX. Steep mid-level lapse rates and strong deep-layer shear will support updraft organization, with an attendant threat for supercells initially. Very large hail (2-3+ inches in diameter) will be possible with this discrete activity, before a transition to more linear structures occurs through the evening. An increase in the severe/damaging wind threat will likely be realized as this mode transition occurs across parts of central TX into southern OK. Some threat for embedded tornadoes will also exist, especially into central TX where greater low-level moisture and shear are forecast. A separate area of severe potential may develop this afternoon/evening across parts of central into northeast TX in the low-level warm advection regime. While weakly forced, there is some chance for at least isolated supercells to develop and pose a risk for large hail and a few tornadoes. This scenario remains uncertain, but 5% tornado probabilities have been expanded eastward to account for this conditional potential. Oklahoma/Kansas into the mid Mississippi Valley A dryline will be in place across western OK today, with a cold front forecast to move slowly southward across KS and parts of MO through tonight. While this area will largely remain between stronger large-scale forcing to both the north and south, it appears probable that additional thunderstorms will eventually develop this evening/tonight along/south of the front. Tornadoes and large hail appear possible with any sustained supercells, while damaging winds should occur with line segments that can develop and spread eastward through early Wednesday morning.