
Severe Weather Takes Aim At High Plains to Ohio Valley
The ongoing outbreak of severe storms continues today, shifting southward into the central Plains and Lower Ohio Valley.
# SUMMARY -------------------- SEVERE THUNDERSTORM WATCH 575 REMAINS VALID UNTIL 5 PM EDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN INDIANA THIS WATCH INCLUDES 10 COUNTIES IN NORTH CENTRAL INDIANA KOSCIUSKO IN NORTHERN INDIANA ADAMS BLACKFORD GRANT HUNTINGTON JAY MIAMI WABASH WELLS WHITLEY THIS INCLUDES THE CITIES OF BERNE, BLUFFTON, COLUMBIA CITY, DECATUR, DUNKIRK, GAS CITY, GRISSOM AFD, HARTFORD CITY, HUNTINGTON, MARION, MEXICO, MONTPELIER, NORTH MANCHESTER, OSSIAN, PERU, PORTLAND, ROANOKE, SOUTH WHITLEY, TRI-LAKES, UPLAND, WABASH, WARSAW, AND WINONA LAKE. # DETAILS -------------------- ISSUED AT Wednesday, August 12, 2026 at 1:26 PM EDT ISSUED BY NATIONAL WEATHER SERVICE NORTHERN INDIANA HEADER WATCH COUNTY NOTIFICATION FOR WATCH 575
# HEADLINE -------------------- FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 3 PM EDT /2 PM CDT/ THIS AFTERNOON FOR GRANT, BLACKFORD, JAY, CASS IN, FULTON IN, SOUTHWESTERN MARSHALL, MIAMI, WABASH, SOUTHWESTERN ADAMS, SOUTHERN HUNTINGTON, SOUTHERN WELLS, SOUTHWESTERN LA PORTE, PULASKI, SOUTHERN STARKE AND NORTHEASTERN WHITE COUNTIES # SUMMARY -------------------- At 121 PM EDT /1221 PM CDT/, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain from Royal Center to near Grissom Air Reserve Base. Between 3 and 4 inches of rain have fallen. Additional rainfall amounts of 0.5 to 1 inch are possible in the warned area. Flash flooding is already occurring. # DETAILS -------------------- HAZARD Flash flooding caused by thunderstorms. SOURCE Radar and automated gauges. IMPACT Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE - Marion, Logansport, Peru, Wabash, Bluffton, Portland, Hartford City, Rochester, Gas City, Upland, Knox, Fairmount, Winamac, Dunkirk, Grissom Afb, Albany, Montpelier, North Judson, Jonesboro and Culver. - The heaviest rainfall will be ending over the warning area through 3 pm EDT, but runoff will continue to pose a threat of flash flooding. ISSUED AT Wednesday, August 12, 2026 at 1:22 PM EDT ISSUED BY National Weather Service Northern Indiana HEADER Flash Flood Statement # 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 -------------------- Wabash IN, Adams IN, Blackford IN, Cass IN IN, Fulton IN IN, Grant IN, Huntington IN, Jay IN, La Porte IN, Marshall IN, Miami IN, Pulaski IN, Starke IN, Wells IN, White IN
# HEADLINE -------------------- FLOOD WATCH REMAINS IN EFFECT UNTIL 11 PM EDT /10 PM CDT/ THIS EVENING # DETAILS -------------------- WHAT Flooding caused by excessive rainfall continues to be possible. WHERE Portions of northern Indiana, including the following areas, Adams, Allen IN, Blackford, Cass IN, Fulton IN, Grant, Huntington, Jay, Marshall, Miami, Northern Kosciusko, Pulaski, Southern Kosciusko, Southern La Porte, Starke, Wabash, Wells and Whitley and northwest Ohio, including the following areas, Allen OH and Van Wert. WHEN Until 11 PM EDT /10 PM CDT/ this evening. IMPACTS Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. ADDITIONAL DETAILS - 2 to 5 inches of rain fell across much of the area yesterday with isolated pockets of over 6 inches. Additional heavy rain is possible later this morning and again during the afternoon. Rainfall rates of 1 to 2 inches per hour are possible in thunderstorms. This may lead to additional flooding, especially in areas that received very heavy rain yesterday. - http://www.weather.gov/safety/flood ISSUED AT Wednesday, August 12, 2026 at 11:19 AM EDT ISSUED BY National Weather Service Northern Indiana HEADER Flood Watch # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. # AREAS AFFECTED -------------------- Wabash, Adams, Allen IN, Allen OH, Blackford, Cass IN, Fulton IN, Grant, Huntington, Jay, Marshall, Miami, Northern Kosciusko, Pulaski, Southern Kosciusko, Southern La Porte, Starke, Van Wert, Wells, Whitley
Closest strike: 0.84 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 Slight 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 FROM ILLINOIS TO KENTUCKY AND FROM THE NORTHERN HIGH PLAINS TO THE MID MISSOURI VALLEY SUMMARY Scattered severe thunderstorms with occasional wind damage are possible this afternoon/evening from Illinois/Indiana into Kentucky. Initial supercells with very large hail will be possible this afternoon/evening across the central/northern High Plains. The storms are expected to evolve into a cluster or two overnight while spreading eastward across Nebraska/South Dakota with the potential for severe outflow gusts. OH Valley area through this evening An MCS is ongoing across northern IL with the primary cold pool surge and bowing segment progressing from northeast IL into northwest IN. Elevated convection is ongoing in the zone of warm advection atop the cold pool in IN. This elevated convection will pose a threat for isolated large hail into this afternoon, while a feed of steeper midlevel lapse rates and low-level moisture from the west will help maintain the IL/IN MCS into this afternoon with a continued threat for occasional wind damage with gusts of 60-75 mph. The eastern extent of the severe threat into OH is uncertain given the ongoing/elevated convection and limited recovery time. Thus, the eastward extent of any wind threat associated with the ongoing IL/IN MCS is likewise uncertain. Additional thunderstorm development is possible this afternoon along the trailing outflow from central IL into southern IN and KY, where occasional wind damage will be possible into this evening. Northern Plains this afternoon through tonight A subtle midlevel speed max over southwest WY will progress eastward around the northwest periphery of the southern Plains ridge. Weak ascent preceding this wave, in combination with surface heating in cloud breaks and low-level upslope flow with boundary-layer dewpoints in the 60s, will support scattered afternoon/evening thunderstorm development from northeast CO into western SD. Lingering steep midlevel lapse rates on the fringe of the monsoonal moisture plume in WY and effective bulk shear near or above 40 kt (with long hodographs aloft) will favor supercells initially with the potential for very large hail (2-3 inches in diameter). There will likely be some upscale growth into a cluster or two this evening into tonight on the nose of a 30-40 kt low-level jet across NE/SD, with a transition to severe outflow gusts of 65-80 mph as the main threat. The storm cluster(s) will likely reach western IA early Thursday morning. Lower MI into western NY/PA through late evening Subtle speed maxima will move east-southeastward from Lower MI to NY/PA through this evening. Midlevel lapse rates of 6-7 C/km and boundary-layer dewpoints in the mid 60s will support MLCAPE near or above 1000 J/kg, in an environment with sufficient deep-layer shear/hodograph length for storms with supercell structures. Isolated large hail and wind damage will be the main threats, though a more discrete mode would be less favorable for wind damage, and storm coverage could remain somewhat isolated. Thus, will maintain a MRGL risk, though there was some consideration for an upgrade to SLGT across western NY and vicinity. South GA/north FL this afternoon Scattered thunderstorm development appears probable from south GA into north FL this afternoon along a subtle confluence zone with large buoyancy immediately southwest of a remnant MCV over southeast GA. A few multicell clusters will be capable of producing isolated strong outflow gusts/wind damage with downbursts.












