Severe Thunderstorm Watch
WATCH COUNTY NOTIFICATION FOR WATCH 598
NATIONAL WEATHER SERVICE SIOUX FALLS SD
234 AM CDT MON AUG 18 2025
NEC043-051-SDC027-079-083-099-101-125-127-135-180900-
/O.CON.KFSD.SV.A.0598.000000T0000Z-250818T0900Z/
SEVERE THUNDERSTORM WATCH 598 REMAINS VALID UNTIL 4 AM CDT EARLY
THIS MORNING FOR THE FOLLOWING AREAS
IN NEBRASKA THIS WATCH INCLUDES 2 COUNTIES
IN NORTHEAST NEBRASKA
DAKOTA DIXON
IN SOUTH DAKOTA THIS WATCH INCLUDES 8 COUNTIES
IN EAST CENTRAL SOUTH DAKOTA
LAKE MOODY
IN SOUTHEAST SOUTH DAKOTA
CLAY LINCOLN MINNEHAHA
TURNER UNION YANKTON
THIS INCLUDES THE CITIES OF ALCESTER, ALLEN, BERESFORD, CANTON,
CENTERVILLE, CHANCELLOR, ELK POINT, FLANDREAU, HARRISBURG,
HURLEY, IRENE, JEFFERSON, LENNOX, MADISON, MARION,
NORTH SIOUX CITY, ORLAND, PARKER, PONCA, SIOUX FALLS,
SOUTH SIOUX CITY, TEA, VERMILLION, VIBORG, WAKEFIELD,
AND YANKTON.
$$
SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 598
NWS STORM PREDICTION CENTER NORMAN OK
1040 PM CDT SUN AUG 17 2025
SEVERE THUNDERSTORM WATCH 598 IS IN EFFECT UNTIL 400 AM CDT
FOR THE FOLLOWING LOCATIONS
NEC003-015-027-043-051-089-107-139-180900-
/O.NEW.KWNS.SV.A.0598.250818T0340Z-250818T0900Z/
NE
. NEBRASKA COUNTIES INCLUDED ARE
ANTELOPE BOYD CEDAR
DAKOTA DIXON HOLT
KNOX PIERCE
$$
Special Weather Statement
Special Weather Statement
National Weather Service Hastings NE
258 AM CDT Mon Aug 18 2025
NEZ049-064-077-087-180830-
Thayer NE-York NE-Polk NE-Fillmore NE-
258 AM CDT Mon Aug 18 2025
...STRONG THUNDERSTORMS WILL IMPACT YORK...FILLMORE...NORTHEASTERN
THAYER AND SOUTHEASTERN POLK COUNTIES THROUGH 330 AM CDT...
At 258 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Shelby to near Waco to near Geneva to near
Alexandria. Movement was east at 15 mph.
HAZARD...Wind gusts up to 50 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Strong thunderstorms will be near...
Exeter, Waco, Gresham, Alexandria, and Ohiowa around 305 AM CDT.
Milligan around 315 AM CDT.
This includes Interstate 80 between mile markers 349 and 365.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4016 9759 4040 9769 4100 9769 4116 9755
4119 9737 4016 9737
TIME...MOT...LOC 0758Z 269DEG 12KT 4116 9748 4083 9746 4051 9756 4026
9747
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH
$$
Rossi
Hazardous Weather Outlook
Hazardous Weather Outlook...CORRECTED
National Weather Service Hastings NE
940 PM CDT Sun Aug 17 2025
KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-
190245-
Phillips-Smith-Jewell-Rooks-Osborne-Mitchell-Valley-Greeley-Nance-
Sherman-Howard-Merrick-Polk-Dawson-Buffalo-Hall-Hamilton-York-
Gosper-Phelps-Kearney-Adams-Clay-Fillmore-Furnas-Harlan-Franklin-
Webster-Nuckolls-Thayer-
940 PM CDT Sun Aug 17 2025
This Hazardous Weather Outlook is for south central Nebraska and
portions of north central Kansas.
.DAY ONE...Overnight.
Mainly between midnight and sunrise Monday, our entire forecast
area stands at least a slight chance of spotty thunderstorms, but
with the overall-highest chances and potentially most widespread
coverage favoring Nebraska counties along and north of Interstate
80.
Although most storms overnight should be fairly weak, a few could be
strong to marginally severe, with the main threats being 50 to 60
MPH winds, and perhaps hail up to around the size of quarters.
Any wind threat would be enhanced if storms are able to organize
into a larger scale line or complex, but it is unclear whether this
will occur.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
- Monday and Tuesday heat concerns:
On Monday afternoon and early evening, heat index values across
nearly our entire forecast area are forecast to reach at least 100
to 104 degrees, with some counties especially east of Highway 281
perhaps reaching 105 or slightly higher.
Tuesday should be slightly cooler, but still with above-average
heat, with limited areas mainly near and south of the Nebraska-
Kansas border perhaps reaching a 100 degree heat index.
- Monday severe thunderstorm potential:
Mainly Monday evening-overnight, there is a chance for at least
scattered thunderstorm across much of our forecast area. Some of
these storms could be severe, with the main threats being wind
gusts to around 60 MPH and hail up to around the size of quarters.
- Additional thunderstorm chances:
At least low-end chances for spotty storms exist Tuesday into
Tuesday night, with additional, intermittent and potentially more
widespread chances arriving between Thursday night and Saturday.
.SPOTTER INFORMATION STATEMENT...
Spotters are encouraged to report any hail, wind gusts of 50 MPH
or higher, or localized flooding that might occur overnight.
&&
More information may be obtained at the following web page:
https://www.weather.gov/hastings
$$
Pfannkuch
Hazardous Weather Outlook
National Weather Service Sioux Falls SD
514 PM CDT Sun Aug 17 2025
IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ038>040-050-052>071-182215-
Lyon-Osceola-Dickinson-Sioux-O`Brien-Clay-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Lincoln-Murray-Cottonwood-Nobles-Jackson-
Pipestone-Rock-Dixon-Dakota-Beadle-Kingsbury-Brookings-Gregory-
Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison-Hanson-
McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-Turner-Bon Homme-
Yankton-Union-
514 PM CDT Sun Aug 17 2025
This Hazardous Weather Outlook is for portions of northwest Iowa,
west central Iowa, southwest Minnesota, northeast Nebraska,
central South Dakota, east central South Dakota, south central
South Dakota, and southeast South Dakota.
.DAY ONE...Tonight
Scattered thunderstorms will bring the threat for severe weather
and heavy rain through the night. The main threats will be hail
to the size of half dollars and wind gusts to 65 mph. The best
chances will be from 8 pm to 4 am.
.DAYS TWO THROUGH SEVEN...Monday through Saturday
A few storms are again possible Monday evening. Details remain
uncertain but storms may be capable of producing large hail and
damaging wind gusts. Please continue to monitor for forecast and
thunderstorm risk changes.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will be possible tonight.
$$
Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
331 PM CDT Sun Aug 17 2025
IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-181045-
Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont-
Page-Knox-Cedar-Thurston-Antelope-Pierce-Wayne-Boone-Madison-
Stanton-Cuming-Burt-Platte-Colfax-Dodge-Washington-Butler-
Saunders-Douglas-Sarpy-Seward-Lancaster-Cass-Otoe-Saline-
Jefferson-Gage-Johnson-Nemaha-Pawnee-Richardson-
331 PM CDT Sun Aug 17 2025
This Hazardous Weather Outlook is for portions of southwest
Iowa...west central Iowa...east central Nebraska...northeast
Nebraska and southeast Nebraska.
.DAY ONE...Tonight and Monday
More thunderstorms are expected to redevelop later tonight with
best chances between midnight and 4am. The primary threat will be
damaging wind gusts.
.DAYS TWO THROUGH SEVEN...Monday night through Sunday
Hot conditions will continue on Monday, particularly for southeast
Nebraska and southwest Iowa where high temperatures may reach the
low 90s with heat indices peaking at 100 to 105 degrees. Severe
weather is possible along the SD/NE border in the evening and a
storm complex could push through the area overnight, bringing
another chance for severe weather.
.SPOTTER INFORMATION STATEMENT...
Spotters are encouraged to report rainfall amounts over one inch
to the National Weather Service at Omaha.
$$
Hazardous Weather Outlook
National Weather Service North Platte NE
328 PM CDT Sun Aug 17 2025
NEZ004>010-022>029-035>038-056>059-069>071-094-182030-
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-
328 PM CDT Sun Aug 17 2025 /228 PM MDT Sun Aug 17 2025/
This Hazardous Weather Outlook is for portions of western and north
central Nebraska.
.DAY ONE...Tonight.
There`s a marginal risk (level 1 of 5) of severe thunderstorms this
evening. The main threats will be damaging wind gusts and large hail.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
There`s a marginal risk (level 1 of 5) of severe thunderstorms Monday
afternoon and evening across much of western and north central
Nebraska. The main threats are damaging wind gusts and large hail.
Thunderstorms return Friday and Saturday evenings, but the severe
threat is uncertain at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter activation may be needed.
$$
Hazardous Weather Outlook
National Weather Service Des Moines IA
240 PM CDT Sun Aug 17 2025
IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-181945-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-
Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
240 PM CDT Sun Aug 17 2025
This Hazardous Weather Outlook is for portions of central Iowa.
.DAY ONE...This afternoon and tonight
Thunderstorm chances this evening into the overnight hours,
beginning in northern Iowa then spreading south and east through
the night. A few strong storms are possible, with gusty winds
being the main concern.
.DAYS TWO THROUGH SEVEN...Monday through Saturday
Intermittent storm chances continue through Monday, some of which
may be strong with gusty winds and hail.
Heat continues on Monday with heat indices over 100 degrees
possible in southern Iowa.
.SPOTTER INFORMATION STATEMENT...
Spotter activation may be needed tonight into Monday.
$$
Hagenhoff
Hazardous Weather Outlook
National Weather Service Topeka KS
355 AM CDT Sun Aug 17 2025
KSZ008>012-020>024-026-034>040-054>056-058-059-180900-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris-
Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson-
355 AM CDT Sun Aug 17 2025
This Hazardous Weather Outlook is for central Kansas, east central
Kansas, north central Kansas and northeast Kansas.
.DAY ONE...Today and tonight.
Hot and humid weather will persist today. Heat indices will rise into
the upper 90s to low 100s.
.DAYS TWO THROUGH SEVEN...Monday through Saturday.
The probability for widespread hazardous weather is low.
&&
More detailed information can be found at:
www.weather.gov/media/top/DssPacket.pdf
$$
