Frost Advisory
URGENT - WEATHER MESSAGE
National Weather Service Aberdeen SD
126 PM CDT Mon May 18 2026
SDZ003>005-009-010-015-016-033>035-045-190430-
/O.NEW.KABR.FR.Y.0003.260519T0900Z-260519T1400Z/
Corson-Campbell-McPherson-Walworth-Edmunds-Dewey-Potter-Stanley-
Sully-Hughes-Jones-
Including the cities of Pierre, McIntosh, Isabel, Herreid,
Ipswich, Gettysburg, Fort Pierre, Mobridge, Eureka, Murdo, and
Onida
126 PM CDT Mon May 18 2026 /1226 PM MDT Mon May 18 2026/
...FROST ADVISORY IN EFFECT FROM 4 AM CDT /3 AM MDT/ TO 9 AM CDT /8
AM MDT/ TUESDAY...
* WHAT...Temperatures from 33 to 36 degrees may result in frost
formation.
* WHERE...Portions of central and north central South Dakota.
* WHEN...From 4 AM CDT /3 AM MDT/ to 9 AM CDT /8 AM MDT/ Tuesday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take steps now to protect tender plants from the cold.
&&
$$
TMT
URGENT - WEATHER MESSAGE
National Weather Service North Platte NE
107 PM CDT Mon May 18 2026
NEZ005-006-008-025-026-037-058-059-069-070-191400-
/O.NEW.KLBF.FR.Y.0001.260519T0600Z-260519T1400Z/
Eastern Cherry-Keya Paha-Brown-Thomas-Blaine-Logan-Perkins-
Lincoln-Chase-Hayes-
Including the cities of Grant, Thedford, Valentine, Halsey,
Purdum, Enders, Wauneta, Imperial, Hayes Center, North Platte,
Springview, Stapleton, Champion, Dunning, Brewster, and Ainsworth
107 PM CDT Mon May 18 2026 /1207 PM MDT Mon May 18 2026/
...FROST ADVISORY IN EFFECT FROM 1 AM CDT /MIDNIGHT MDT/ TO 9 AM CDT
/8 AM MDT/ TUESDAY...
* WHAT...Temperatures as low as 34 will result in frost formation.
* WHERE...Portions of north central, southwest, and west central
Nebraska.
* WHEN...From 1 AM CDT /midnight MDT/ to 9 AM CDT /8 AM MDT/ Tuesday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take steps now to protect tender plants from the cold.
&&
$$
For more information from the National Weather Service, visit
www.weather.gov/lbf.
Buttler
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
1256 PM CDT Mon May 18 2026
IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-191800-
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-
1256 PM CDT Mon May 18 2026
This Hazardous Weather Outlook is for southwest Iowa, west central
Iowa, east central Nebraska, northeast Nebraska and southeast
Nebraska.
.DAY ONE...This afternoon and tonight.
Additional strong to severe storms are forecast this afternoon, with
an increased threat for large hail (2-4+ inches) and strong
tornadoes. Additional chances for heavy rainfall on top of what has
already fallen since Friday night will result in a potential for
flash flooding, particularly for portions of southeastern Nebraska.
Chances to see severe storm activity is maximized over southeast
Nebraska.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
The probability for widespread hazardous weather is low.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will likely be needed this afternoon and evening.
$$
Hazardous Weather Outlook
National Weather Service Des Moines IA
548 AM CDT Mon May 18 2026
IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-191100-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-
Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
548 AM CDT Mon May 18 2026
This Hazardous Weather Outlook is for portions of central Iowa.
.DAY ONE...Today and tonight
There is an Enhanced Risk (level 3 of 5) for severe storms today.
Storms are expected to move into the area after 6PM this evening,
continuing to move across Iowa tonight into Tuesday morning.
Damaging winds, large hail and tornadoes are all possible.
Heavy rainfall is expected to occur at times with Monday`s severe
storms. Flash flooding concerns are limited mainly to cities and
towns.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
No hazardous weather is expected.
.SPOTTER INFORMATION STATEMENT...
Spotter activation may be needed Monday.
$$
Hazardous Weather Outlook
National Weather Service North Platte NE
338 AM CDT Mon May 18 2026
NEZ004>010-022>029-035>038-056>059-069>071-094-190845-
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-
338 AM CDT Mon May 18 2026 /238 AM MDT Mon May 18 2026/
This Hazardous Weather Outlook is for portions of western and north
central Nebraska.
.DAY ONE...Today and tonight.
Scattered showers with a few embedded thunderstorms are possible
across north central Nebraska Monday afternoon. No severe weather is
expected.
Low temperatures falling into the upper 20s to lower 30s will promote
areas of frost Monday night, mainly for areas west of Highway 83.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Scattered showers and thunderstorms are possible for portions of
western Nebraska each day Wednesday through Saturday. At this time,
the threat for severe weather is uncertain.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Sioux Falls SD
331 AM CDT Mon May 18 2026
IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ038>040-050-052>071-190845-
Lyon-Osceola-Dickinson-Sioux-O`Brien-Clay-Plymouth-Cherokee-
Buena Vista-Woodbury-Ida-Lincoln-Murray-Cottonwood-Nobles-Jackson-
Pipestone-Rock-Dixon-Dakota-Beadle-Kingsbury-Brookings-Gregory-
Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison-Hanson-McCook-
Minnehaha-Charles Mix-Douglas-Hutchinson-Turner-Bon Homme-Yankton-
Union-
331 AM CDT Mon May 18 2026
This Hazardous Weather Outlook is for northwest Iowa, west central
Iowa, southwest Minnesota, northeast Nebraska, central South
Dakota, east central South Dakota, south central South Dakota and
southeast South Dakota.
.DAY ONE...Today and tonight.
Scattered showers and isolated thunderstorms return to the area this
afternoon through tonight. A few strong to severe storms are possible
along and southeast of a line from Wayne to Sheldon to Windom. If
strong storms develop, ping pong ball sized hail and 60 mph wind
gusts are the main threats. However, locally heavy rainfall and a
tornado are possible.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
Chances for showers and thunderstorms return Thursday through
Friday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
245 AM CDT Mon May 18 2026
MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
190745-
Douglas-Todd-Morrison-Mille Lacs-Kanabec-Stevens-Pope-Stearns-
Benton-Sherburne-Isanti-Chisago-Lac Qui Parle-Swift-Chippewa-
Kandiyohi-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-
Yellow Medicine-Renville-McLeod-Sibley-Carver-Scott-Dakota-
Redwood-Brown-Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-
Waseca-Steele-Martin-Faribault-Freeborn-Polk-Barron-Rusk-
St. Croix-Pierce-Dunn-Pepin-Eau Claire-
245 AM CDT Mon May 18 2026
This Hazardous Weather Outlook is for portions of central and
southern Minnesota, and west central Wisconsin.
.DAY ONE...Today and Tonight.
Thunderstorms are expected again tonight, especially from southern
Minnesota into western Wisconsin. The strongest storms across
southeast Minnesota could contain damaging wind gusts.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
No hazardous weather is expected at this time.
.SPOTTER INFORMATION STATEMENT...
SKYWARN spotter activation may be needed tonight.
$$
