Scattered Severe Storms Across Plains and Midwest — August 15 — SevereWX

Storms are firing across the High Plains this evening, leading to multiple severe thunderstorm watches in effect for parts of Colorado, Kansas, Wyoming, and Nebraska. The Storm Prediction Center's Slight risk outlook covers these regions where thunderstorms could bring damaging winds and large hail right now. Scattered severe potential also exists elsewhere from the Appalachians through the Midwest, but activity centers on the Plains at the moment.

Isolated storms continue to develop in areas under watch, with the latest discussions pointing to organized clusters capable of severe weather through the next few hours.

Timeline

12:42 AM EDT — Severe potential low in northeast Kansas, northern Missouri

SPC issues a mesoscale discussion for portions of northeast Kansas, northern Missouri, southern Iowa, and western Illinois. Severe weather is possible but a watch remains unlikely at 20% probability. Early morning storms may produce gusty winds and hail.

1:02 PM EDT — Isolated severe risk in central, northeast South Carolina

A mesoscale discussion targets central and northeast South Carolina into southeast North Carolina. Severe potential is low with watch probability at just 5%. Afternoon thunderstorms could turn severe with isolated gusts.

1:25 PM EDT — Severe storms possible over Cumberland Plateau, Blue Ridge

SPC highlights severe potential from the Cumberland Plateau into the Blue Ridge, including the Great Smoky Mountains across parts of Tennessee, North Carolina, Virginia, West Virginia, South Carolina, Kentucky, and Georgia. A watch is unlikely but possible at 20% odds. Storms here may bring damaging winds into early afternoon.

2:08 PM EDT — Watch possible for southwest Ohio, northeast Kentucky

Severe potential prompts a mesoscale discussion for southwest Ohio into northeast Kentucky, with a watch possible at 40% probability. Storms are organizing and could produce severe hail and winds soon. Activity may intensify over the next couple hours.

3:28 PM EDT — 60% watch chance in eastern Wyoming, northeast Colorado

SPC notes high severe potential in eastern Wyoming, northeast Colorado, far southwest South Dakota, and the Nebraska Panhandle, with a 60% chance of a watch. Discrete storms capable of very large hail and damaging winds are developing now. This area sees the strongest upscale growth potential.

4:04 PM EDT — Severe t-storm watch for Nebraska Panhandle, southeast Wyoming until 11:00 PM EDT

A severe thunderstorm watch covers Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill, Scotts Bluff, Sioux counties in Nebraska, plus Goshen County in Wyoming until 11:00 PM EDT. Expect storms to produce damaging winds and large hail. Have a severe weather plan ready.

4:05 PM EDT — Severe t-storm watch southeast Colorado until 11:00 PM EDT

Severe thunderstorm watch issued for Baca, Bent, Crowley, El Paso, Kiowa, Las Animas, Otero, Prowers, and Pueblo counties in Colorado until 11:00 PM EDT. Thunderstorms moving through may bring severe gusts and hail. Monitor radar closely.

4:25 PM EDT — 60% watch odds for northeast New Mexico, Oklahoma Panhandle

Mesoscale discussion flags severe potential in far northeast New Mexico, the Oklahoma Panhandle, and southwest Kansas, with 60% watch probability. Storms are growing taller and could yield large hail and strong winds shortly.

4:56 PM EDT — Watch possible in eastern Indiana, western Ohio

SPC discusses severe risk in far eastern Indiana into far western Ohio, watch possible at 40%. Afternoon convection may organize into severe-producing cells with hail and gusts.

5:02 PM EDT — Severe potential in Iowa, Missouri, Illinois; watch possible

A mesoscale discussion covers south-central and southeast Iowa, north-central and northeast Missouri, and west-central Illinois, with 40% watch chance. Storms pose risks of damaging winds and hail as they develop.

7:08 PM EDT — Severe t-storm Watch 584 issued for eastern CO, WY, western KS

SPC issues Severe Thunderstorm Watch 584 for eastern Colorado and Wyoming into western Kansas. Ongoing clusters of storms threaten severe hail and damaging winds through evening. This covers areas seeing the most intense activity now.

8:09 PM EDT — Severe t-storm watch southwest Kansas until 2:00 AM EDT

Severe thunderstorm watch now active for Finney, Grant, Gray, Hamilton, Haskell, Kearny, Lane, Meade, Morton, Scott, and Seward counties in Kansas until 2:00 AM EDT. Supercell-like storms may produce very large hail and wind gusts. Nighttime travel disrupted possible.

8:49 PM EDT — Severe t-storm watch northeast Colorado until 11:00 PM EDT

Latest severe thunderstorm watch for Lincoln, Logan, and Washington counties in Colorado until 11:00 PM EDT. Robust storms continue to pulse severe weather threats. Stay alert for sudden changes.

9:53 PM EDT — Severe thunderstorm watch issued for southeast Colorado

The National Weather Service issued a severe thunderstorm watch for Baca, Bent, Crowley, Kiowa, Otero and Prowers counties. It remains in effect until 11:00 PM EDT. Storms in these areas may produce large hail and damaging wind gusts.

9:54 PM EDT — Severe thunderstorm watch issued for northeast Colorado

A severe thunderstorm watch is now active for Lincoln, Logan and Washington counties. This watch expires at 11:00 PM EDT. Residents should prepare for potential severe storms with hail and strong winds.

10:38 PM EDT — Severe thunderstorm watch for Nebraska panhandle, northeast Wyoming

The National Weather Service issued a severe thunderstorm watch for Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill, Scotts Bluff, and Sioux counties in Nebraska plus Goshen County in Wyoming. It runs until 11:45 PM EDT. Expect possible large hail and damaging winds—stay alert and have a plan ready.

10:43 PM EDT — Tornado warning issued for Franklin, OH

A tornado warning is now in effect until 11:15 PM EDT for Franklin County in Ohio—it could be extended or cancelled by the NWS. Take cover immediately in a sturdy interior room on the lowest floor. Conditions are favorable for a tornado in this area.

10:50 PM EDT — Severe Thunderstorm Warning: northwest IL, southeast IA

A severe thunderstorm warning is in effect for Bureau, Henry, Mercer, Rock Island and Whiteside counties in Illinois plus Scott County in Iowa until 11:45 PM EDT. It could be extended or dropped by the National Weather Service. These storms may produce large hail and damaging winds.

10:53 PM EDT — Tornado Warning: Franklin County, OH

A tornado warning is in effect until 11:15 PM EDT for Franklin County, Ohio — it could be extended or cancelled by NWS. Radar indicates possible rotation. Take cover in a sturdy interior room on the lowest floor right away.

10:58 PM EDT — Severe Thunderstorm Warning: central & eastern ID

A severe thunderstorm warning now covers Bingham, Blaine, Bonneville, Butte and Power counties in Idaho until 11:45 PM EDT. It could be extended or dropped by the National Weather Service. Expect large hail and strong wind gusts from these storms.

11:04 PM EDT — Tornado Warning for central Ohio

A Tornado Warning is in effect for Fairfield and Franklin counties in Ohio until 11:30 PM EDT — could be extended or cancelled by NWS.

Residents in the area should move to a sturdy shelter away from windows right away.

Seek updated information from local National Weather Service offices.

11:13 PM EDT — Severe Thunderstorm Warning for northwest IL, eastern IA

A Severe Thunderstorm Warning has been issued for Bureau, Henry, Rock Island, and Whiteside counties in Illinois plus Scott County in Iowa.

The warning is active until 11:45 PM EDT.

Damaging winds and large hail are the main threats with these storms.

11:24 PM EDT — Severe Thunderstorm Warning: Bureau, Henry Counties, IL

A severe thunderstorm warning is in effect for Bureau and Henry counties in Illinois until 11:45 PM EDT. This warning could be extended or canceled by the National Weather Service. Damaging winds and large hail are possible in these areas.

11:28 PM EDT — Severe Thunderstorm Warning: Bingham, Blaine, Bonneville, Butte, Power Counties, ID

A severe thunderstorm warning now covers Bingham, Blaine, Bonneville, Butte, and Power counties in Idaho until 11:45 PM EDT. It could be extended or canceled by forecasters. Expect strong winds and hail with these storms.

How It Ended

Severe Thunderstorm Watch 584 expired without tornadoes as storms weakened after sunset. Lingering threats in the Plains and Midwest fizzled with storms losing organization. All warnings lapsed overnight, closing the severe weather window for August 15.