Watches, Warnings & Advisories



2 products issued by NWS for: Sioux City IA

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Sioux Falls SD
922 PM CDT Tue May 19 2026

IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ038>040-050-052>071-210230-
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-
922 PM CDT Tue May 19 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...Tonight.

Temperatures near to just above 32 degrees with lead to frost and
freeze conditions tonight especially across the Highway-14 corridor.
Make sure to protect any sensitive vegetation!

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Additional chances for showers and thunderstorms return Thursday
afternoon through Friday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$




Frost Advisory

URGENT - WEATHER MESSAGE
National Weather Service Sioux Falls SD
817 PM CDT Tue May 19 2026

IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097-
098-NEZ013-014-SDZ050-054>071-201200-
/O.CON.KFSD.FR.Y.0006.260520T0600Z-260520T1300Z/
Lyon-Osceola-Dickinson-Sioux-O`Brien-Clay-Plymouth-Cherokee-Buena
Vista-Woodbury-Ida-Lincoln-Lyon-Murray-Cottonwood-Nobles-Jackson-
Pipestone-Rock-Dixon-Dakota-Gregory-Miner-Lake-Moody-Brule-Aurora-
Davison-Hanson-McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-
Turner-Lincoln-Bon Homme-Yankton-Clay-Union-
Including the cities of Freeman, Arnolds Park, Mountain Lake,
Luverne, Jackson, Chamberlain, Bridgewater, Ida Grove, Delmont,
Salem, Menno, Yankton, White Lake, Lake Benton, Flandreau,
Cherokee, Tea, Storm Lake, Sioux Falls, Sheldon, Lakefield,
Jefferson, Marty, Sioux City, Irene, Tripp, Hartley, Lake Andes,
Stickney, Canistota, Lennox, Spirit Lake, Larchwood, Hurley,
Canton, Centerville, Hull, Mitchell, Sioux Center, Howard,
Hawarden, Slayton, North Sioux City, Orland, Sibley, Plankinton,
Ponca, Emery, Hendricks, Harrisburg, Springfield, Wagner,
Marshall, Orange City, Alcester, Marion, Beresford, Pipestone,
Parkston, Platte, Vermillion, Alexandria, Parker, Battle Creek,
Viborg, Montrose, Kimball, Spencer, Holstein, Armour, Sanborn,
Clayton, Chancellor, Tyler, George, Wakefield, Scotland, Ivanhoe,
Elk Point, Gregory, Tyndall, Rock Rapids, Madison, Allen, Tabor,
Worthington, Milford, Corsica, Inwood, Avon, Windom, South Sioux
City, Burke, Le Mars, Rock Valley, and Fulda
817 PM CDT Tue May 19 2026

...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 8 AM CDT
WEDNESDAY...

* WHAT...Temperatures as low as 34 will result in frost formation.

* WHERE...Portions of northwest and west central Iowa, southwest
  Minnesota, northeast Nebraska, and east central, south central,
  and southeast South Dakota.

* WHEN...From 1 AM to 8 AM CDT Wednesday.

* 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.

&&

$$

IG