Severe Thunderstorm Watch
SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 618
NWS STORM PREDICTION CENTER NORMAN OK
240 PM MDT SUN AUG 23 2026
SEVERE THUNDERSTORM WATCH 618 IS IN EFFECT UNTIL 800 PM MDT
FOR THE FOLLOWING LOCATIONS
NEC013-031-045-069-075-123-161-240200-
/O.NEW.KWNS.SV.A.0618.260823T2040Z-260824T0200Z/
NE
. NEBRASKA COUNTIES INCLUDED ARE
BOX BUTTE CHERRY DAWES
GARDEN GRANT MORRILL
SHERIDAN
$$
SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 618
NWS STORM PREDICTION CENTER NORMAN OK
240 PM MDT SUN AUG 23 2026
SEVERE THUNDERSTORM WATCH 618 IS IN EFFECT UNTIL 800 PM MDT
FOR THE FOLLOWING LOCATIONS
SDC007-019-033-047-055-063-071-081-093-102-103-105-240200-
/O.NEW.KWNS.SV.A.0618.260823T2040Z-260824T0200Z/
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
BENNETT BUTTE CUSTER
FALL RIVER HAAKON HARDING
JACKSON LAWRENCE MEADE
OGLALA LAKOTA PENNINGTON PERKINS
$$
ATTN...WFO...CYS...UNR...LBF...
Special Weather Statement
Special Weather Statement
National Weather Service Riverton WY
606 PM MDT Sun Aug 23 2026
WYZ017-018-240030-
Wind River Basin-Lander Foothills-
606 PM MDT Sun Aug 23 2026
...STRONG THUNDERSTORMS WILL IMPACT SOUTHEASTERN FREMONT COUNTY
THROUGH 630 PM MDT...
At 605 PM MDT, Doppler radar was tracking an outflow boundary along
a line extending from 9 miles north of Riverton to near Hudson.
Movement was southeast at 40 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could blow around unsecured objects.
Strong thunderstorms will be near...
Riverton, Arapahoe, and Hudson around 610 PM MDT.
Boysen State Park around 615 PM MDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4280 10808 4281 10812 4285 10813 4283 10819
4275 10815 4272 10820 4269 10820 4268 10821
4267 10825 4266 10827 4261 10830 4262 10836
4264 10841 4291 10877 4326 10843 4303 10786
TIME...MOT...LOC 0005Z 306DEG 33KT 4316 10842 4293 10864
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
$$
TL
Special Weather Statement
National Weather Service Rapid City SD
540 PM MDT Sun Aug 23 2026
SDZ044-076-240045-
Bennett SD-Southern Oglala Lakota SD-
540 PM MDT Sun Aug 23 2026
...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN BENNETT AND
SOUTHEASTERN OGLALA LAKOTA COUNTIES UNTIL 645 PM MDT...
At 540 PM MDT, Doppler radar was tracking a strong thunderstorm over
Porcupine, or 17 miles northeast of Pine Ridge, moving southeast at
25 mph.
HAZARD...Wind gusts up to 40 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Porcupine, Wounded Knee, Batesland, Wakpamni, Swett, Porcupine
Butte Housing and southern Pine Ridge Reservation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the weather situation closely and be alert for threatening
weather conditions.
&&
LAT...LON 4312 10256 4334 10227 4300 10156 4300 10233
TIME...MOT...LOC 2340Z 307DEG 23KT 4322 10235
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH
$$
Helgeson
Hazardous Weather Outlook
Hazardous Weather Outlook...UPDATED
National Weather Service North Platte NE
549 PM CDT Sun Aug 23 2026
NEZ004>010-022>029-035>038-056>059-069>071-094-242300-
Sheridan-Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Garden-Grant-
Hooker-Thomas-Blaine-Loup-Garfield-Wheeler-Arthur-McPherson-Logan-
Custer-Deuel-Keith-Perkins-Lincoln-Chase-Hayes-Frontier-
Western Cherry-
549 PM CDT Sun Aug 23 2026 /449 PM MDT Sun Aug 23 2026/
This Hazardous Weather Outlook is for portions of western and north
central Nebraska.
.DAY ONE...Tonight.
Isolated thunderstorms are possible across the western Sandhills
this evening. There is a threat for an isolated severe thunderstorm.
Large hail and damaging winds are the main threats. At this time,
locations west of Highway 61 will be the main area of concern.
Showers and a few thunderstorms are possible east of Highway
183 after midnight.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
Isolated strong to severe thunderstorms are possible during the late
afternoon and evening hours Monday. Some storms may reach severe
limits with large hail and damaging wind gusts, mainly west of
Highway 83.
Another round of thunderstorms is possible Tuesday afternoon and
evening across the area. Severe storms are possible with damaging
winds and large hail The main area of concern for severe storms is
south of a line from Lisco to Sargent.
There will be a daily threat for thunderstorms Wednesday through
Saturday across western and north central Nebraska. At this time,
the severe threat is uncertain.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
