Weather Alerts For Oregon, IL

# HEADLINE -------------------- FLOOD WATCH IN EFFECT THROUGH THIS EVENING # DETAILS -------------------- WHAT Flash flooding caused by excessive rainfall is possible. WHERE Portions of Illinois, including the following areas, Boone, Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane, Kankakee, Kendall, La Salle, Lake IL, Lee, Livingston, McHenry, Northern Cook, Northern Will, Ogle, Southern Cook, Southern Will and Winnebago and northwest Indiana, including the following areas, Lake IN and Porter. WHEN Through this evening. 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 heavy showers and thunderstorms are possible this afternoon and evening, with rain rates up to 1 to 3 inches per hour possible. The most likely areas for flooding include urban areas and locations and received heavy rainfall over the last few days. - http://www.weather.gov/safety/flood ISSUED AT Thursday, June 11, 2026 at 10:05 AM CDT ISSUED BY National Weather Service Chicago IL HEADER URGENT - IMMEDIATE BROADCAST REQUESTED | Flood Watch # 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. # AREAS AFFECTED -------------------- Boone, Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane, Kankakee, Kendall, La Salle, Lake IL, Lake IN, Lee, Livingston, McHenry, Northern Cook, Northern Will, Ogle, Porter, Southern Cook, Southern Will, Winnebago Including the cities of Coal City, Oak Lawn, Gary, Evanston, Calumet City, Crystal Lake, Wheaton, Streator, Mokena, Orland Park, Beecher, Belvidere, Pontiac, Crete, Park Forest, Yorkville, Oregon, Elgin, Schaumburg, Waukegan, Joliet, Bradley, Aurora, Morris, McHenry, Minooka, Plano, Buffalo Grove, Dwight, Cicero, Wilmington, Oak Park, Chesterton, La Grange, Rochelle, Portage, Ottawa, Dixon, Marseilles, Lombard, Des Plaines, La Salle, Palatine, Hammond, Naperville, Algonquin, Mendota, Bourbonnais, Merrillville, Lemont, Chicago, Valparaiso, Rockford, Oswego, Kankakee, DeKalb, Channahon, Fairbury, Bolingbrook, Gurnee, Woodstock, Plainfield, Manhattan, Mundelein, Carol Stream, Byron, Sycamore, Downers Grove, Peotone, Northbrook, and Oak Forest

Closest strike: 3.29 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 Moderate 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 ILLINOIS...FAR EASTERN IOWA...AND FAR SOUTHERN WISCONSIN THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE MID-ATLANTIC AND CENTRAL APPALACHIANS SUMMARY Widespread severe thunderstorms are expected this afternoon and evening across parts of the Midwest and Great Lakes region, including far eastern Iowa, northern Missouri, northern/central Illinois, southern Wisconsin, Lower Michigan, and northern Indiana. This includes the potential for widespread/intense damaging winds (some 75+ mph), large hail, and several tornadoes, some of which may be strong to intense. Midwest/Great Lakes An active and impactful severe weather event is still expected across parts of the Midwest Great Lakes later this afternoon and evening. Ongoing bowing cluster across southeast IA/northwest IL/southwest WI and vicinity may continue to pose at least some severe wind and embedded QLCS tornado threat as it continues east-northeastward across parts of the Midwest this afternoon. There is still airmass recovery underway ahead of this activity, especially into central/northern IL, northern IN, and parts of southern Lower MI where strong heating is occurring. Enhanced mid-level west-southwesterly winds associated with a potent shortwave trough over the northern Plains/Upper Midwest will overspread the developing warm sector this afternoon, and support organized severe potential, including the possibility of multiple tornadic supercells and widespread severe/damaging winds. Even so, greater than usual uncertainty exists regarding redevelopment later today on the southern/western flank of ongoing convection across northern IL into northeast MO and vicinity. A gradual increase in both low-level and deep-layer shear is anticipated across this area as a 30-40+ kt southerly low-level jet develops eastward in tandem with the eastward-ejecting shortwave trough and mid-level jet. A mix of supercells and bowing segments appears probable as renewed thunderstorms develop along/ahead of the surface cold front this afternoon in a strongly unstable and rather favorably sheared environment. If at least semi-discrete supercell structures can be maintained, then potential exists for several tornadoes, and multiple strong to intense tornadoes (EF-2/3+) given the enhanced low-level shear. Isolated large to very large hail may also occur with any sustained supercells. Otherwise, numerous to potentially widespread severe/damaging winds also appear likely through the period across parts of northern/central IL into southern Lower MI and northern IN. Both the ongoing cluster and eventual upscale growth of convection that develops this afternoon will likely produce severe/damaging winds, some of which could be significant (75+ mph). The northern extent of the severe risk into WI and northern Lower MI remains uncertain, but at least some wind and/or tornado threat will likely continue with eastward extent into the southern Great Lakes and northern IN this evening. Eastern Kansas/Southern Missouri into the Southern Plains Additional thunderstorms will likely develop this afternoon and evening along the trailing cold front into portions of eastern KS/southern MO into the southern Plains. Stronger deep-layer shear is forecast to lag behind/to the north of the cold front. Still, around 20-30 kt of effective bulk shear and moderate to strong instability will support marginal supercell structures and loosely organized multicells capable of producing both large hail and damaging winds. A large component of boundary-parallel shear will likely lead to clustering and messy convective modes through the evening before thunderstorms gradually weaken with the loss of daytime heating. Mid-Atlantic/Central Appalachians Recent visible satellite imagery across much of the Mid-Atlantic and central Appalachians shows mostly sunny to partly cloudy conditions, with ample low-level moisture present per latest surface observations and area 12Z observed soundings. Large-scale ascent associated with multiple low-amplitude mid-level shortwave troughs will likely support the development of widely scattered thunderstorms by afternoon across parts of the Mid-Atlantic into the central Appalachians. Though deep-layer shear is forecast to remain modest, moderate to strong instability will exist with continued diurnal heating this afternoon. This will support stronger updrafts capable of scattered severe/damaging winds and perhaps isolated hail. Multiple clusters should eventually emerge, with potential for organizing along outflow/cold pools, and more focused corridors of damaging winds possible across parts of the I-95 corridor from northern VA to eastern PA and NJ.