Severe Thunderstorm Warnings: FL/ID/LA/MT/ND/NE/SD/UT — August 23 — SevereWX

The Storm Prediction Center maintains a Slight risk of severe thunderstorms across parts of South Dakota and Utah on this Sunday afternoon. Scattered storms in these regions could bring damaging winds, large hail, and isolated tornadoes as daytime heating fuels development.

Mesoscale discussions are active from the East Coast to the Northern Plains and Rockies, where forecasters are watching for updraft potential. Two of the latest discussions indicate a 60% chance of watches in the Dakotas and central Montana areas over the next couple of hours, while eastern threats remain lower confidence.

Timeline

12:03 PM EDT — SPC flags severe potential northern Mid-Atlantic into western New England

SPC has issued a mesoscale discussion highlighting the potential for severe thunderstorms across the northern Mid-Atlantic into western New England. A watch is unlikely at this time, with forecasters assigning only a 20% probability. Any storms that form could produce damaging winds and large hail through late afternoon.

1:48 PM EDT — SPC notes severe risk portions Carolina coast into far eastern Georgia

Forecasters at SPC have outlined severe thunderstorm potential along portions of the Carolina coastline into far eastern Georgia. Watch issuance remains unlikely with a 20% probability pegged. Isolated storms here may bring gusty winds and hail as they move onshore.

2:12 PM EDT — SPC highlights low-end severe potential central Gulf Coast

A mesoscale discussion from SPC addresses portions of the central Gulf Coast, where severe thunderstorms pose a limited threat. The chance of needing a watch sits at just 5%, signaling low confidence. Marine and coastal areas should monitor for wind gusts if cells intensify.

3:19 PM EDT — SPC eyes watch issuance central Montana, adjacent Idaho, northwest Wyoming

SPC has issued a mesoscale discussion for central Montana and adjacent portions of Idaho and northwest Wyoming, where severe storms are gaining traction. A watch is possible, with a 60% probability of issuance in the next hour or so. Storms could quickly organize to produce large hail and damaging winds.

3:24 PM EDT — SPC sees 60% watch chance southeast North Dakota, western South Dakota, Nebraska Panhandle

The latest mesoscale discussion targets southeast North Dakota, western South Dakota, and portions of the Nebraska Panhandle for increasing severe potential. Forecasters note a 60% chance of a watch as storms develop amid favorable conditions. Expect possible hail and wind damage if activity strengthens soon.

3:36 PM EDT — Severe Thunderstorm Warning issued western SD

A Severe Thunderstorm Warning is in effect for Lawrence and Pennington counties until 4:30 PM EDT. These storms could bring damaging winds and large hail. Take shelter if storms approach.

3:51 PM EDT — Severe Thunderstorm Warning: Lawrence & Pennington Counties, SD

A severe thunderstorm warning is now in effect for Lawrence and Pennington counties in South Dakota until 4:30 PM EDT. These storms may produce damaging winds and large hail. Residents should seek shelter away from windows.

3:52 PM EDT — Severe Thunderstorm Warning: Dawes County, NE

A severe thunderstorm warning has been issued for Dawes County, Nebraska, active until 4:30 PM EDT. Expect strong winds capable of damage and large hail from this storm. Move indoors immediately if in the warned area.

3:59 PM EDT — Severe Thunderstorm Watch for north-central Montana

A Severe Thunderstorm Watch is in effect until 9:00 PM EDT for Blaine, Broadwater, Cascade, Chouteau, Fergus, Gallatin, Hill, Judith Basin, and Liberty counties in Montana. Storms could bring large hail and damaging winds. Prepare now if in the area.

4:00 PM EDT — Severe Thunderstorm Watch for south-central Montana

A Severe Thunderstorm Watch is now active until 9:00 PM EDT covering Carbon, Golden Valley, Park, Stillwater, Sweet Grass, and Wheatland counties in Montana. Dangerous storms with hail and strong winds are expected. Stay weather-aware.

4:04 PM EDT — SPC Mesoscale Discussion 2101 for western states

The Storm Prediction Center issued discussion 2101 noting severe storm potential in northeast Nevada, northern Utah, southeast Idaho, and southwest Wyoming. A watch is possible soon. Conditions are favorable for strong storms.

4:05 PM EDT — Severe Thunderstorm Warning for Dawes County, NE

A Severe Thunderstorm Warning is in effect until 4:30 PM EDT for Dawes County, Nebraska. This storm may produce large hail and damaging winds. Seek shelter if it's nearby.

4:14 PM EDT — Severe Thunderstorm Warning for Pennington County, SD

A Severe Thunderstorm Warning now covers Pennington County, South Dakota until 4:30 PM EDT. Expect possible very large hail or wind gusts strong enough to cause damage. Move indoors immediately if threatened.

4:20 PM EDT — Severe Thunderstorm Warning: Pennington Co., SD

A severe thunderstorm warning is in effect for Pennington County in South Dakota until 5:15 PM EDT. These storms can produce large hail and damaging wind gusts. Residents should seek shelter if threatening weather approaches.

4:21 PM EDT — SPC MD 2102: Severe potential in eastern CO, SW KS

The Storm Prediction Center issued Mesoscale Discussion 2102 for eastern Colorado, far southwest Kansas, and parts of the Oklahoma and Texas Panhandles. Storms there have potential to become severe. However, a watch is unlikely at this time.

4:24 PM EDT — Severe Thunderstorm Warning: East Baton Rouge, East Feliciana & St. Helena Parishes, LA

Severe thunderstorm warnings are now active for East Baton Rouge, East Feliciana, and St. Helena Parishes in Louisiana until 5:15 PM EDT. Expect large hail and damaging winds from these powerful storms. Take cover if storms move nearby.

4:27 PM EDT — Severe Thunderstorm Warning: Georgetown Co., SC

A severe thunderstorm warning covers Georgetown County in South Carolina until 5:15 PM EDT. The storm may bring large hail and strong wind gusts. Stay alert and monitor local updates.

4:30 PM EDT — Severe Thunderstorm Warning: Dawes Co., NE

Officials issued a severe thunderstorm warning for Dawes County in Nebraska until 5:15 PM EDT. Dangerous storms capable of large hail and damaging winds are moving through the area. Seek safe shelter immediately.

4:40 PM EDT — Severe Thunderstorm Watch for northwest Nebraska

A Severe Thunderstorm Watch is in effect for Box Butte, Dawes and Morrill counties until 10:00 PM EDT. Storms here could produce large hail and damaging winds. Stay prepared and monitor updates.

4:40 PM EDT — Severe Thunderstorm Watch for northern Nebraska

A Severe Thunderstorm Watch covers Cherry, Garden, Grant and Sheridan counties until 10:00 PM EDT. Large hail and damaging winds are possible with developing storms. Review your safety plans.

4:41 PM EDT — Severe Thunderstorm Warning for Gallatin/Madison MT

Severe Thunderstorm Warning now active for Gallatin and Madison counties until 5:45 PM EDT. Dangerous storms with large hail and strong winds are occurring. Take shelter immediately if threatened.

4:43 PM EDT — Severe Thunderstorm Warning for Hill/Liberty MT

Severe Thunderstorm Warning issued for Hill and Liberty counties until 5:45 PM EDT. Storms capable of large hail and damaging winds are in the area. Seek safe shelter.

4:43 PM EDT — Severe Thunderstorm Warning for Pennington SD

Severe Thunderstorm Warning in effect for Pennington County until 5:15 PM EDT. Radar shows storms producing large hail and strong winds. Move indoors away from windows.

4:44 PM EDT — Severe Thunderstorm Watch for western SD counties

Severe Thunderstorm Watch active for Bennett, Butte, Custer, Fall River, Haakon, Harding, Jackson, Lawrence, Meade and Oglala Lakota counties until 10:00 PM EDT. Severe storms with hail and high winds possible. Prepare now.

4:44 PM EDT — Severe Thunderstorm Warning for St. Helena LA

Severe Thunderstorm Warning for St. Helena Parish until 5:15 PM EDT. Storms bringing large hail and damaging winds are underway. Protect yourself and property.

4:48 PM EDT — SPC Mesoscale Discussion for southern Arizona

The Storm Prediction Center issued Discussion 2103 for southern Arizona. Storms there may produce severe weather this evening. A watch is unlikely at this time.

4:48 PM EDT — Severe thunderstorm warning for Dawes County, NE

A severe thunderstorm warning is in effect for Dawes County in Nebraska until 5:15 PM EDT. The storm could bring large hail and damaging winds. Seek shelter if threatened.

4:48 PM EDT — Severe thunderstorm warning for Box Elder County, UT

A severe thunderstorm warning now covers Box Elder County in Utah until 5:30 PM EDT. Expect possible large hail and strong wind gusts. Take cover indoors.

4:51 PM EDT — Severe thunderstorm warning for Fergus County, MT

Severe thunderstorm warning issued for Fergus County in Montana until 5:45 PM EDT. Storms capable of producing hail and damaging winds are occurring. Move to safety.

4:57 PM EDT — Severe thunderstorm warning for Hill/Liberty counties, MT

A severe thunderstorm warning is active for Hill and Liberty counties in Montana until 5:45 PM EDT. Large hail and strong winds are possible with these storms. Shelter immediately if in the area.

5:01 PM EDT — Severe Thunderstorm Warning for Box Butte/Dawes NE

A severe thunderstorm warning is in effect until 6:00 PM EDT for Box Butte and Dawes counties in Nebraska. These storms could bring large hail and wind gusts over 60 mph. Seek shelter away from windows if in the area.

5:04 PM EDT — Severe Thunderstorm Warning for Box Elder UT

Severe thunderstorm warning active until 5:30 PM EDT in Box Elder County, Utah. Expect potential for damaging winds and hail. Stay indoors and avoid travel through affected areas.

5:04 PM EDT — Severe Thunderstorm Warning for Elko NV

Warning issued until 5:30 PM EDT for Elko County, Nevada. Storms may produce hail large enough to damage vehicles and strong winds that down trees. Take cover immediately.

5:06 PM EDT — Severe Thunderstorm Warning for Fergus MT

Severe thunderstorm warning until 5:45 PM EDT in Fergus County, Montana. Heavy rain, large hail, and gusty winds are possible. Monitor radar and have a safety plan.

5:06 PM EDT — Severe Thunderstorm Warning for Custer/Pennington SD

Warning in effect until 6:00 PM EDT for Custer and Pennington counties in South Dakota. These powerful storms threaten property with hail and high winds. Move to a sturdy building.

5:09 PM EDT — Severe Thunderstorm Warning for Bannock/Power ID

Severe warning active until 6:00 PM EDT across Bannock and Power counties, Idaho. Damaging wind gusts and large hail are the primary concerns. Secure outdoor items now.

5:12 PM EDT — Severe Thunderstorm Warning for Hill MT

Warning until 5:45 PM EDT for Hill County, Montana. Storms capable of producing destructive hail and winds. Residents should seek safe shelter.

5:12 PM EDT — Severe Thunderstorm Warning for Gallatin/Madison MT

Severe thunderstorm warning in effect until 5:45 PM EDT for Gallatin and Madison counties in Montana. Brace for possible large hail and strong wind damage. Stay weather aware.

5:13 PM EDT — Severe Thunderstorm Warning for Fremont/Pueblo CO

Warning active until 5:45 PM EDT in Fremont and Pueblo counties, Colorado. These storms pack large hail and damaging winds. Protect yourself and property.

5:18 PM EDT — Severe warnings for western Nebraska

Powerful thunderstorms capable of large hail and damaging winds have prompted a severe thunderstorm warning for Box Butte and Dawes counties in Nebraska. The warning expires at 6:00 PM EDT. Seek shelter immediately if storms approach your location.

5:23 PM EDT — Severe warnings for western South Dakota

Storms producing large hail and strong wind gusts are under a severe thunderstorm warning for Custer and Pennington counties in South Dakota. This warning is in effect until 6:00 PM EDT. Stay indoors and away from windows.

5:24 PM EDT — Severe warning for southeast Idaho

A severe thunderstorm warning covers Bannock and Power counties in Idaho due to storms bringing possible large hail and damaging winds. It expires at 6:00 PM EDT. Monitor local radar for storm movement.

5:26 PM EDT — Severe warning for central Montana

Severe thunderstorms with large hail and high winds have led to a warning for Fergus County in Montana until 5:45 PM EDT. Take cover if threatening weather is nearby. Have a plan ready.

5:27 PM EDT — Severe Thunderstorm Watch for northern Utah

A severe thunderstorm watch is in effect until 12:00 AM EDT for Box Elder, Cache, Davis, Morgan, Rich, Salt Lake, Summit, Tooele, Utah, and Wasatch counties in Utah. Conditions favor storms that could produce damaging winds and large hail. Prepare for possible warnings.

5:28 PM EDT — Severe Thunderstorm Watch for southeast Idaho

The NWS has issued a severe thunderstorm watch until 12:00 AM EDT covering Bannock, Bear Lake, Bingham, Bonneville, Caribou, Cassia, Franklin, Oneida, and Power counties in Idaho. Severe storms with hail and winds are possible. Stay alert.

5:28 PM EDT — Severe warning expands in southeast Idaho

Severe thunderstorm warning now active until 6:00 PM EDT for Bannock, Bingham, Bonneville, and Caribou counties in Idaho. These storms carry risks of large hail and damaging winds. Seek safe shelter.

5:29 PM EDT — Severe warning for north-central Montana

A severe thunderstorm warning is in place for Hill County in Montana until 5:45 PM EDT due to storms with large hail and strong winds. Avoid outdoor activities and monitor updates.

5:31 PM EDT — Severe warning for Sheridan, NE

A severe thunderstorm warning is in effect until 6:15 PM EDT for Sheridan County in Nebraska. Storms could bring damaging winds and large hail. Take shelter if you're in the area.

5:33 PM EDT — Severe warning for Blaine/Chouteau/Hill, MT

A severe thunderstorm warning is in effect until 6:30 PM EDT for Blaine, Chouteau, and Hill Counties in Montana. Expect possible damaging wind gusts and large hail. Move indoors away from windows.

5:35 PM EDT — Severe warning for Palm Beach, FL

A severe thunderstorm warning is in effect until 6:00 PM EDT for Palm Beach County in Florida. These storms may produce large hail and strong winds. Seek safe shelter immediately.

5:38 PM EDT — Severe warning for Bannock/Power, ID

A severe thunderstorm warning is in effect until 6:00 PM EDT for Bannock and Power Counties in Idaho. Damaging winds and hail are the main threats. Stay alert and protected.

5:40 PM EDT — Severe warning for Fergus, MT

A severe thunderstorm warning is in effect until 6:45 PM EDT for Fergus County in Montana. Storms capable of large hail and gusty winds are impacting the area. Take cover now.

5:43 PM EDT — Severe warning for Tangipahoa, LA

A severe thunderstorm warning is in effect until 6:30 PM EDT for Tangipahoa Parish in Louisiana. Possible damaging winds and large hail ahead. Head to safety indoors.

5:43 PM EDT — Severe warning for Bannock/Oneida/Power, ID

A severe thunderstorm warning is in effect until 6:30 PM EDT for Bannock, Oneida, and Power Counties in Idaho. Strong winds and hail possible. Shelter in place if affected.

5:44 PM EDT — Severe warning for Blaine/Hill, MT

A severe thunderstorm warning is in effect until 7:15 PM EDT for Blaine and Hill Counties in Montana. These thunderstorms may pack large hail and damaging winds. Seek shelter promptly.

5:44 PM EDT — Severe warning for Custer, SD

A severe thunderstorm warning is in effect until 6:00 PM EDT for Custer County in South Dakota. Expect large hail and strong wind gusts. Move to a sturdy structure.

5:45 PM EDT — Severe Warning: Petroleum/Phillips Counties, MT

Powerful thunderstorms bringing large hail and damaging wind gusts are impacting Petroleum and Phillips counties in Montana. The warning lasts until 6:45 PM EDT. Seek sturdy shelter if storms near.

5:48 PM EDT — Severe Watch: Eastern MT Counties

A severe thunderstorm watch covers Daniels, Dawson, Garfield, McCone, Petroleum, Phillips, Prairie, Richland and Roosevelt counties in eastern Montana until midnight EDT. Conditions favor storms with large hail and strong winds. Have a safety plan ready.

5:50 PM EDT — Severe Watch: SE MT Counties

Severe thunderstorm watch issued for Big Horn, Carter, Custer, Fallon, Musselshell, Powder River, Rosebud, Treasure and Yellowstone counties in southeast Montana until midnight. Expect potential for intense storms producing hail and gusty winds. Stay informed.

5:50 PM EDT — Severe Watch: SC MT Counties

The NWS has a severe watch for Carbon, Golden Valley, Park, Stillwater, Sweet Grass and Wheatland counties in south-central Montana until 9:00 PM EDT. Storms may bring large hail and damaging winds. Monitor radar closely.

5:51 PM EDT — Severe Warning: Blaine/Chouteau/Hill Counties, MT

Thunderstorms with large hail and strong winds are moving through Blaine, Chouteau and Hill counties in Montana. Warning in effect until 6:30 PM EDT. Move indoors away from windows.

5:53 PM EDT — Severe Warning: Sheridan County, NE

Severe thunderstorms capable of large hail and damaging gusts are affecting Sheridan County in Nebraska until 6:15 PM EDT. Take cover if thunder rumbles nearby. Avoid open areas.

5:54 PM EDT — Severe Warning: Cassia/Power Counties, ID

Storms packing large hail and high winds are hitting Cassia and Power counties in Idaho. This warning expires at 6:45 PM EDT. Secure outdoor items and shelter safely.

5:55 PM EDT — Severe Warning: Fergus County, MT

Powerful storms with hail and wind are over Fergus County, Montana until 6:45 PM EDT. The threat includes dangerous conditions for travel. Find shelter immediately.

5:57 PM EDT — Severe Warning: Billings/Golden Valley/Stark Counties, ND

Thunderstorms bringing large hail and gusty winds are impacting Billings, Golden Valley and Stark counties in North Dakota until 7:00 PM EDT. Stay inside during the storm. Warnings may extend.

5:57 PM EDT — Severe Warning: Caribou County, ID

Severe weather with large hail and strong winds is occurring in Caribou County, Idaho until 6:45 PM EDT. Protect yourself from flying debris. Monitor local alerts.

5:58 PM EDT — Severe Warning: SE LA Parishes

Storms with damaging winds and hail are affecting Jefferson, St. Charles, St. John the Baptist and Tangipahoa parishes in Louisiana until 6:45 PM EDT. Seek shelter now. Conditions could worsen.

5:59 PM EDT — Severe Watch: Western ND Counties

Severe thunderstorm watch for Adams, Billings, Bowman, Dunn, Golden Valley, Grant, Hettinger, McKenzie, Mercer and other counties in western North Dakota until 11:00 PM EDT. Storms with hail and winds possible. Prepare accordingly.

What's Next

Ongoing storms under Slight risk will track east across Montana and North Dakota into the evening, with watches extending overnight. Additional severe thunderstorm warnings are likely in the northern Plains and Intermountain West. Louisiana activity may pulse with isolated threats. Stay tuned to NWS updates.

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