Lyon County Iowa Sheriff's Office

Lyon County Iowa Sheriff's Office The Lyon County Sheriff’s Office is composed of three entities: Law Enforcement, Dispatch/Communications, and Jail/Detention.

06/01/2026

Lyon County Alert:

Severe Thunderstorm Watch
Severe Thunderstorm Watch issued May 31 at 9:38PM CDT until June 1 at 1:00AM CDT by NWS Sioux Falls SD
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
257 IN EFFECT UNTIL 1 AM CDT MONDAY FOR THE FOLLOWING AREAS

IN IOWA THIS WATCH INCLUDES 8 COUNTIES

IN NORTHWEST IOWA

CHEROKEE LYON O'BRIEN
OSCEOLA PLYMOUTH SIOUX

IN WEST CENTRAL IOWA

IDA WOODBURY

IN MINNESOTA THIS WATCH INCLUDES 2 COUNTIES

IN SOUTHWEST MINNESOTA

NOBLES ROCK

IN NEBRASKA THIS WATCH INCLUDES 2 COUNTIES

IN NORTHEAST NEBRASKA

DAKOTA DIXON

IN SOUTH DAKOTA THIS WATCH INCLUDES 6 COUNTIES

IN SOUTHEAST SOUTH DAKOTA

CLAY LINCOLN MINNEHAHA
TURNER UNION YANKTON

THIS INCLUDES THE CITIES OF ALCESTER, ALLEN, BATTLE CREEK,
BERESFORD, CANTON, CENTERVILLE, CHANCELLOR, CHEROKEE, ELK POINT,
GEORGE, HARRISBURG, HARTLEY, HAWARDEN, HOLSTEIN, HULL, HURLEY,
IDA GROVE, INWOOD, IRENE, JEFFERSON, LARCHWOOD, LE MARS, LENNOX,
LUVERNE, MARION, NORTH SIOUX CITY, ORANGE CITY, PARKER, PONCA,
ROCK RAPIDS, ROCK VALLEY, SANBORN, SHELDON, SIBLEY, SIOUX CENTER,
SIOUX CITY, SIOUX FALLS, SOUTH SIOUX CITY, TEA, VERMILLION,
VIBORG, WAKEFIELD, WORTHINGTON, AND YANKTON.
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http://www.weather.gov

REMEMBER AND HONORThis Memorial Day the team at the Lyon County Iowa Sheriff's Office remembers and honors those (and th...
05/25/2026

REMEMBER AND HONOR

This Memorial Day the team at the Lyon County Iowa Sheriff's Office remembers and honors those (and their families) who gave their lives for the cause of freedom and our great country.

05/25/2026

Lyon County Alert:

Severe Thunderstorm Warning
Severe Thunderstorm Warning issued May 25 at 1:12AM CDT until May 25 at 2:00AM CDT by NWS Sioux Falls SD
SVRFSD

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
Southeastern Lyon County in northwestern Iowa...
Southwestern Osceola County in northwestern Iowa...
Northeastern Sioux County in northwestern Iowa...
Northern O'Brien County in northwestern Iowa...

* Until 200 AM CDT.

* At 111 AM CDT, a severe thunderstorm was located over Matlock, or 7
miles north of Sheldon, moving southeast at 30 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.

* This severe thunderstorm will be near...
Sheldon and Ashton around 115 AM CDT.
Sanborn around 120 AM CDT.
Archer around 125 AM CDT.
Melvin around 130 AM CDT.

Other locations in the path of this severe thunderstorm include
Primghar and Hartley.
For your protection move to an interior room on the lowest floor of a
building.

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Sioux Falls.
http://www.weather.gov

05/25/2026

Lyon County Alert:

Severe Thunderstorm Warning
Severe Thunderstorm Warning issued May 24 at 11:29PM CDT until May 25 at 12:15AM CDT by NWS Sioux Falls SD
SVRFSD

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
Northwestern Lyon County in northwestern Iowa...
Southwestern Rock County in southwestern Minnesota...
Southeastern Minnehaha County in southeastern South Dakota...
Northwestern Lincoln County in southeastern South Dakota...

* Until 1215 AM CDT.

* At 1129 PM CDT, a severe thunderstorm was located over Sioux Falls,
moving east at 30 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.

* This severe thunderstorm will be near...
Sioux Falls, Brandon, Harrisburg, Lake Alvin State Recreation
Area, Corson, and Rowena around 1135 PM CDT.
Valley Springs around 1140 PM CDT.
Larchwood around 1145 PM CDT.

Other locations in the path of this severe thunderstorm include Hills
and Beaver Creek.
For your protection move to an interior room on the lowest floor of a
building.

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Sioux Falls.
http://www.weather.gov

05/25/2026

Lyon County Alert:

Severe Thunderstorm Warning
Severe Thunderstorm Warning issued May 24 at 10:42PM CDT until May 24 at 11:30PM CDT by NWS Sioux Falls SD
SVRFSD

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
Northwestern Lyon County in northwestern Iowa...
Northeastern Lincoln County in southeastern South Dakota...

* Until 1130 PM CDT.

* At 1041 PM CDT, a severe thunderstorm was located over Lake Alvin
State Recreation Area, or 7 miles north of Canton, moving east at
30 mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.

* This severe thunderstorm will be near...
Larchwood around 1045 PM CDT.
Lester around 1050 PM CDT.
Alvord around 1100 PM CDT.
For your protection move to an interior room on the lowest floor of a
building.

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Sioux Falls.
http://www.weather.gov

A view of the beautiful light show. Stay alert tonight and be safe.
05/25/2026

A view of the beautiful light show. Stay alert tonight and be safe.

05/24/2026

Lyon County Alert:

Severe Thunderstorm Watch
Severe Thunderstorm Watch issued May 24 at 4:54PM CDT until May 24 at 11:00PM CDT by NWS Sioux Falls SD
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
243 IN EFFECT UNTIL 11 PM CDT THIS EVENING FOR THE FOLLOWING
AREAS

IN IOWA THIS WATCH INCLUDES 5 COUNTIES

IN NORTHWEST IOWA

LYON O'BRIEN OSCEOLA
PLYMOUTH SIOUX

IN MINNESOTA THIS WATCH INCLUDES 8 COUNTIES

IN SOUTHWEST MINNESOTA

COTTONWOOD JACKSON LINCOLN
LYON MURRAY NOBLES
PIPESTONE ROCK

IN NEBRASKA THIS WATCH INCLUDES 2 COUNTIES

IN NORTHEAST NEBRASKA

DAKOTA DIXON

IN SOUTH DAKOTA THIS WATCH INCLUDES 17 COUNTIES

IN EAST CENTRAL SOUTH DAKOTA

BROOKINGS LAKE MINER
MOODY

IN SOUTH CENTRAL SOUTH DAKOTA

CHARLES MIX DOUGLAS GREGORY

IN SOUTHEAST SOUTH DAKOTA

BON HOMME CLAY HANSON
HUTCHINSON LINCOLN MCCOOK
MINNEHAHA TURNER UNION
YANKTON

THIS INCLUDES THE CITIES OF ALCESTER, ALEXANDRIA, ALLEN, ARMOUR,
AVON, BERESFORD, BRIDGEWATER, BROOKINGS, BURKE, CANISTOTA,
CANTON, CENTERVILLE, CHANCELLOR, CLAYTON, CORSICA, DELMONT,
ELK POINT, EMERY, FLANDREAU, FREEMAN, FULDA, GEORGE, GREGORY,
HARRISBURG, HARTLEY, HAWARDEN, HENDRICKS, HOWARD, HULL, HURLEY,
INWOOD, IRENE, IVANHOE, JACKSON, JEFFERSON, LAKE ANDES,
LAKE BENTON, LAKEFIELD, LARCHWOOD, LE MARS, LENNOX, LUVERNE,
MADISON, MARION, MARSHALL, MARTY, MENNO, MONTROSE, MOUNTAIN LAKE,
NORTH SIOUX CITY, ORANGE CITY, ORLAND, PARKER, PARKSTON,
PIPESTONE, PLATTE, PONCA, ROCK RAPIDS, ROCK VALLEY, SALEM,
SANBORN, SCOTLAND, SHELDON, SIBLEY, SIOUX CENTER, SIOUX FALLS,
SLAYTON, SOUTH SIOUX CITY, SPRINGFIELD, TABOR, TEA, TRIPP, TYLER,
TYNDALL, VERMILLION, VIBORG, WAGNER, WAKEFIELD, WINDOM,
WORTHINGTON, AND YANKTON.
null
http://www.weather.gov

05/17/2026

Lyon County Alert:

Severe Thunderstorm Warning
Severe Thunderstorm Warning issued May 17 at 5:56PM CDT until May 17 at 7:00PM CDT by NWS Sioux Falls SD
SVRFSD

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
Southeastern Lyon County in northwestern Iowa...
Southwestern Osceola County in northwestern Iowa...
Northern Sioux County in northwestern Iowa...
Northwestern O'Brien County in northwestern Iowa...

* Until 700 PM CDT.

* At 556 PM CDT, a severe thunderstorm was located over Doon, or 12
miles north of Sioux Center, moving east at 40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.

* This severe thunderstorm will be near...
Hull and Doon around 600 PM CDT.
George and Boyden around 605 PM CDT.
Matlock around 610 PM CDT.

Other locations in the path of this severe thunderstorm include
Ashton and Melvin.
For your protection move to an interior room on the lowest floor of a
building.

A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...and southeastern South Dakota.
http://www.weather.gov

05/17/2026

Lyon County Alert:

Severe Thunderstorm Warning
Severe Thunderstorm Warning issued May 17 at 5:43PM CDT until May 17 at 6:45PM CDT by NWS Sioux Falls SD
SVRFSD

The National Weather Service in Sioux Falls has issued a

* Severe Thunderstorm Warning for...
Eastern Lyon County in northwestern Iowa...
Central Osceola County in northwestern Iowa...
Eastern Rock County in southwestern Minnesota...
Nobles County in southwestern Minnesota...
Southeastern Murray County in southwestern Minnesota...

* Until 645 PM CDT.

* At 542 PM CDT, severe thunderstorms were located along a line
extending from near Lismore to near Adrian to near Ellsworth,
moving northeast at 35 mph.

HAZARD...70 mph wind gusts and ping pong ball size hail.

SOURCE...Radar indicated. At 536 PM CDT, half dollar size hail was
reported 3 miles southwest of Magnolia.

IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.

* Severe thunderstorms will be near...
Adrian, Ellsworth, Leota, and Lismore around 545 PM CDT.
Little Rock, Rushmore, and Wilmont around 550 PM CDT.

Other locations in the path of these severe thunderstorms include
Worthington, Fulda and Brewster.
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

A Tornado Watch remains in effect until 1000 PM CDT for northwestern
Iowa...and southwestern Minnesota.
http://www.weather.gov

Address

Rock Rapids, IA

Telephone

+17124728300

Website

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