Alert archive / Iowa / Blizzard Warnings in 2025

Blizzard Warning 5, NWS Des Moines, IA

December 27, 202520 counties in Iowa

NWS Des Moines, IA issued this blizzard warning at Dec 27, 2025, 9:44 PM CST for 20 counties in Iowa. It took effect at Dec 28, 2025, 9:00 AM CST. It was in force for 24 hr. 8 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Dec 27, 2025, 9:44 PM CST (03:44 UTC)
In effect from
Dec 28, 2025, 9:00 AM CST
Expired
Dec 29, 2025, 9:00 AM CST
In force
24 hr
Issued by
NWS Des Moines, IA

Counties Black Hawk County, IA, Bremer County, IA, Butler County, IA, Calhoun County, IA, Cerro Gordo County, IA, Emmet County, IA, Franklin County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Humboldt County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA, Sac County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA

The radar

The Des Moines radar (KDMX), 118 km from the middle of the area, began a volume at 03:46 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Dec 29, 6:00 AM CSTSNOW 1Sac City, IA
Dec 29, 6:00 AM CSTSNOW 1.1Waterloo, IA
Dec 29, 7:00 AM CSTSNOW 0.6Iowa Falls, IA
Dec 29, 7:00 AM CSTSNOW 1.5Hampton, IA
Dec 29, 7:00 AM CSTSNOW 1.5Webster City, IA
Dec 29, 7:00 AM CSTSNOW 3Estherville, IA
Dec 29, 7:00 AM CSTSNOW 4Fort Dodge, IA
Dec 29, 8:00 AM CSTSNOW 1Pocahontas, IA

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 3.7 hours before the alert went out and 229 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2025-12-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2025-12-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
603 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

661 
WWUS43 KDMX 280344
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
944 PM CST Sat Dec 27 2025

IAZ004>007-016-017-281345-
/O.UPG.KDMX.WS.A.0008.251228T1500Z-251229T1200Z/
/O.NEW.KDMX.BZ.W.0005.251228T1500Z-251229T1200Z/
Emmet-Kossuth-Winnebago-Worth-Hancock-Cerro Gordo-
Including the cities of Manly, Lake Mills, Estherville, Kanawha,
Algona, Clear Lake, Garner, Britt, Forest City, Mason City, and
Northwood
944 PM CST Sat Dec 27 2025

...BLIZZARD WARNING IN EFFECT FROM 9 AM SUNDAY TO 6 AM CST MONDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations 
  between 1 and 3 inches and ice accumulations around a light glaze. 
  Winds gusting as high as 50 mph.

* WHERE...Portions of north central and northwest Iowa.

* WHEN...From 9 AM Sunday to 6 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Widespread blowing 
  snow could significantly reduce visibility. Gusty winds could 
  bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must travel, 
have a winter survival kit with you. If you get stranded, stay with 
your vehicle.

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ023-033>039-044-045-281345-
/O.EXA.KDMX.WW.Y.0022.251228T1500Z-251229T1200Z/
Pocahontas-Sac-Calhoun-Webster-Hamilton-Hardin-Grundy-Black Hawk-
Crawford-Carroll-
Including the cities of Rolfe, Pomeroy, Cedar Falls, Early,
Odebolt, Lake View, Wellsburg, Webster City, Laurens, Eldora,
Carroll, Fonda, Wall Lake, Waterloo, Dike, Lake City, Manson,
Reinbeck, Gilmore City, Pocahontas, Conrad, Sac City, Grundy
Center, Ackley, Iowa Falls, Schaller, Fort Dodge, Rockwell City,
and Denison
944 PM CST Sat Dec 27 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM SUNDAY TO 6 AM CST 
MONDAY...

* WHAT...Mixed precipitation expected before transitioning to light 
  snow. Total snow accumulations of 1 to 3 and ice accumulations 
  around a light glaze. Winds gusting over 50 mph.

* WHERE...Portions of central, northeast, northwest, and west 
  central Iowa.

* WHEN...From 9 AM Sunday to 6 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Gusty winds could 
  bring down tree branches.

* ADDITIONAL DETAILS...A short period with significant blowing snow 
  and local whiteout conditions are possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ015-024>028-281345-
/O.CON.KDMX.WW.Y.0022.251228T1500Z-251229T1200Z/
Palo Alto-Humboldt-Wright-Franklin-Butler-Bremer-
Including the cities of Parkersburg, Dumont, Clarion, Aplington,
Waverly, Shell Rock, Emmetsburg, Humboldt, Hampton, Belmond,
Clarksville, Greene, Eagle Grove, and Allison
944 PM CST Sat Dec 27 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 AM SUNDAY TO 6 
AM CST MONDAY...

* WHAT...Mixed precipitation expected before transitioning to light 
  snow. Total snow accumulations of 1 to 3 and ice accumulations 
  around a light glaze. Winds gusting over 50 mph.

* WHERE...Portions of north central, northeast, and northwest Iowa.

* WHEN...From 9 AM Sunday to 6 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing snow 
  could significantly reduce visibility. Gusty winds could bring 
  down tree branches.

* ADDITIONAL DETAILS...A short period with significant blowing snow 
  and local whiteout conditions are possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

Donavon
7 follow-up statements
005 
WWUS43 KDMX 280945
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
345 AM CST Sun Dec 28 2025

IAZ015-024>028-281945-
/O.UPG.KDMX.WW.Y.0022.251228T1500Z-251229T1200Z/
/O.EXB.KDMX.BZ.W.0005.251228T1500Z-251229T1500Z/
Palo Alto-Humboldt-Wright-Franklin-Butler-Bremer-
Including the cities of Dumont, Aplington, Clarksville, Allison,
Eagle Grove, Waverly, Parkersburg, Shell Rock, Greene, Humboldt,
Hampton, Clarion, Emmetsburg, and Belmond
345 AM CST Sun Dec 28 2025

...BLIZZARD WARNING IN EFFECT FROM 9 AM THIS MORNING TO 9 AM CST 
MONDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations 
  between 2 and 4 inches and ice accumulations around a light glaze. 
  Winds gusts over 55 mph possible.

* WHERE...Much of northern Iowa.

* WHEN...From 9 AM this morning to 9 AM CST Monday.

* IMPACTS...Travel could be very difficult. Widespread blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  will impact the Monday morning commute. Gusty winds could bring 
  down tree branches.

* ADDITIONAL DETAILS...Travel may become nearly impossible due to 
  whiteout conditions and blowing and drifting of snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must travel, 
have a winter survival kit with you. If you get stranded, stay with 
your vehicle.

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ004>007-016-017-281945-
/O.EXT.KDMX.BZ.W.0005.251228T1500Z-251229T1500Z/
Emmet-Kossuth-Winnebago-Worth-Hancock-Cerro Gordo-
Including the cities of Lake Mills, Garner, Manly, Forest City,
Mason City, Kanawha, Algona, Northwood, Estherville, Clear Lake,
and Britt
345 AM CST Sun Dec 28 2025

...BLIZZARD WARNING NOW IN EFFECT FROM 9 AM THIS MORNING TO 9 AM CST 
MONDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations 
  between 2 and 5 inches and ice accumulations around a light glaze. 
  Winds gusts over 55 mph possible.

* WHERE...Much of northern Iowa.

* WHEN...From 9 AM this morning to 9 AM CST Monday.

* IMPACTS...Travel could be very difficult. Areas of blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  will impact the Monday morning commute. Gusty winds could bring 
  down tree branches.

* ADDITIONAL DETAILS...Travel may become nearly impossible due to 
  whiteout conditions and blowing and drifting of snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must travel, 
have a winter survival kit with you. If you get stranded, stay with 
your vehicle.

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ047>050-281945-
/O.EXB.KDMX.WW.Y.0022.251228T1500Z-251229T1500Z/
Boone-Story-Marshall-Tama-
Including the cities of Toledo, Tama, Ames, Boone, Traer, Dysart,
Gladbrook, and Marshalltown
345 AM CST Sun Dec 28 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 9 AM 
CST MONDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations up 
  to one inch and ice accumulations around a light glaze. Winds 
  gusting as high as 50 mph.

* WHERE...Boone, Marshall, Story, and Tama Counties.

* WHEN...From 9 AM this morning to 9 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  could impact the Monday morning commute. Gusty winds could bring 
  down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ046-281945-
/O.EXA.KDMX.WW.Y.0022.251228T1500Z-251229T1200Z/
Greene-
Including the cities of Jefferson
345 AM CST Sun Dec 28 2025

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 6 AM 
CST MONDAY...

* WHAT...Snow expected. Total snow accumulations up to one inch. 
  Winds gusting as high as 45 mph.

* WHERE...Greene County.

* WHEN...From 9 AM this morning to 6 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Gusty winds could 
  bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ023-035>039-281945-
/O.EXT.KDMX.WW.Y.0022.251228T1500Z-251229T1500Z/
Pocahontas-Webster-Hamilton-Hardin-Grundy-Black Hawk-
Including the cities of Iowa Falls, Grundy Center, Dike, Eldora,
Laurens, Gilmore City, Reinbeck, Waterloo, Wellsburg, Rolfe,
Pocahontas, Conrad, Ackley, Cedar Falls, Fonda, Webster City, and
Fort Dodge
345 AM CST Sun Dec 28 2025

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 9 AM THIS MORNING TO 9 
AM CST MONDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations 
  between 1 and 3 inches and ice accumulations around a light glaze. 
  Winds gusting as high as 50 mph.

* WHERE...Portions of central and northeast Iowa.

* WHEN...From 9 AM this morning to 9 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  could impact the Monday morning commute. Gusty winds could bring 
  down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ033-034-044-045-281945-
/O.CON.KDMX.WW.Y.0022.251228T1500Z-251229T1200Z/
Sac-Calhoun-Crawford-Carroll-
Including the cities of Carroll, Rockwell City, Sac City, Early,
Manson, Odebolt, Pomeroy, Wall Lake, Lake View, Schaller, Lake
City, and Denison
345 AM CST Sun Dec 28 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING 
TO 6 AM CST MONDAY...

* WHAT...Snow expected. Total snow accumulations up to two inches. 
  Winds gusting as high as 45 mph.

* WHERE...Calhoun, Carroll, Crawford, and Sac Counties.

* WHEN...From 9 AM this morning to 6 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing snow 
  could significantly reduce visibility. Gusty winds could bring 
  down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

Jimenez
916 
WWUS43 KDMX 281656
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
1056 AM CST Sun Dec 28 2025

...STRONG WINDS, SNOW, AND FALLING TEMPERATURES LEADING TO 
HAZARDOUS TRAVEL TODAY...

.Strong winds combined with bands of snow moving through central into
northern Iowa are producing sharp drops in visibility. Heaviest snow 
amounts are expected in northern Iowa, as snow will continue the 
longest in these areas, resulting in prolonged periods of blizzard 
conditions. Farther south into north central and central Iowa, rain 
will transition to snow as temperatures drop below freezing, 
resulting in re-freeze potential. Similarly, bursts of snow will 
lead to short durations of visibility under a mile, which combined 
with freezing roads could make travel dangerous. Accumulations will 
be less in the Advisory areas, with visibility drops only present 
with falling snow.

IAZ004>007-015>017-024>028-290300-
/O.CON.KDMX.BZ.W.0005.000000T0000Z-251229T1500Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Humboldt-Wright-Franklin-Butler-Bremer-
Including the cities of Clarksville, Emmetsburg, Allison,
Estherville, Humboldt, Waverly, Algona, Shell Rock, Dumont,
Parkersburg, Britt, Clear Lake, Eagle Grove, Lake Mills,
Aplington, Hampton, Clarion, Forest City, Mason City, Garner,
Greene, Kanawha, Manly, Belmond, and Northwood
1056 AM CST Sun Dec 28 2025

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 9 AM CST MONDAY...

* WHAT...Blizzard conditions. Additional snow accumulations between 
  3 and 5 inches and ice accumulations around a light glaze. Winds 
  gusting as high as 60 mph.

* WHERE...Much of northern Iowa.

* WHEN...Until 9 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Widespread blowing 
  snow could significantly reduce visibility. The hazardous 
  conditions could impact the Monday morning commute. Gusty winds 
  could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must travel, 
have a winter survival kit with you. If you get stranded, stay with 
your vehicle.

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ057>062-070>073-290000-
/O.EXB.KDMX.WW.Y.0022.000000T0000Z-251229T0000Z/
Audubon-Guthrie-Dallas-Polk-Jasper-Poweshiek-Cass-Adair-Madison-
Warren-
Including the cities of Bayard, Guthrie Center, Audubon,
Greenfield, Panora, Exira, Atlantic, Des Moines, Fontanelle,
Carlisle, Newton, Norwalk, Winterset, Earlham, Indianola, Adel,
Casey, Perry, Grinnell, Waukee, Adair, and Stuart
1056 AM CST Sun Dec 28 2025

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM CST THIS EVENING...

* WHAT...Mixed precipitation. Additional snow and sleet 
  accumulations up to one inch and ice accumulations around a light 
  glaze. Winds gusting as high as 50 mph.

* WHERE...Portions of central Iowa.

* WHEN...Until 6 PM CST this evening.

* IMPACTS...Plan on slippery road conditions. Gusty winds could 
  bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ023-035>039-047>050-290300-
/O.CON.KDMX.WW.Y.0022.000000T0000Z-251229T1500Z/
Pocahontas-Webster-Hamilton-Hardin-Grundy-Black Hawk-Boone-Story-
Marshall-Tama-
Including the cities of Marshalltown, Fort Dodge, Grundy Center,
Eldora, Reinbeck, Gladbrook, Waterloo, Rolfe, Laurens, Cedar
Falls, Conrad, Tama, Wellsburg, Boone, Webster City, Traer,
Pocahontas, Fonda, Ames, Iowa Falls, Ackley, Gilmore City,
Dysart, Toledo, and Dike
1056 AM CST Sun Dec 28 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST MONDAY...

* WHAT...Mixed precipitation. Additional snow accumulations of 1 to 
  3 inches and ice accumulations around a light glaze. Winds gusting 
  as high as 55 mph.

* WHERE...Portions of central into north central and northeast Iowa.

* WHEN...Until 9 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the Monday morning commute. Gusty winds 
  could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ033-034-044>046-290300-
/O.CON.KDMX.WW.Y.0022.000000T0000Z-251229T1200Z/
Sac-Calhoun-Crawford-Carroll-Greene-
Including the cities of Early, Lake City, Lake View, Schaller,
Denison, Manson, Pomeroy, Carroll, Sac City, Odebolt, Wall Lake,
Jefferson, and Rockwell City
1056 AM CST Sun Dec 28 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST MONDAY...

* WHAT...Snow. Additional snow accumulations up to one inch. Winds 
  gusting as high as 45 mph.

* WHERE...Calhoun, Carroll, Crawford, Greene, and Sac Counties.

* WHEN...Until 6 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Gusty winds could 
  bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

Dodson
262 
WWUS43 KDMX 281948
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
148 PM CST Sun Dec 28 2025

...STRONG WINDS, SNOW, AND FALLING TEMPERATURES LEADING TO 
HAZARDOUS TRAVEL TODAY...

.Strong northwesterly winds with gusts over 55 mph continue to 
produce dangerous travel conditions in northern and north central 
Iowa today as both falling and freshly fallen snow continues to blow 
around. Visibilities of a quarter mile or less have been common in 
these areas. Additional rounds of snowfall through the afternoon and 
evening will prolong these deteriorated conditions, with strong 
winds expected to continue into Monday morning. Freezing 
temperatures have now switched snow over to rain in central and 
south central Iowa, leading to slushy and slick roadways. Additional 
snowfall tracking from west to east over this area, as well as gusty 
winds, will continue to impact travel, especially on rural and 
untreated roads.

IAZ023-035>039-290600-
/O.UPG.KDMX.WW.Y.0022.000000T0000Z-251229T1500Z/
/O.EXA.KDMX.BZ.W.0005.000000T0000Z-251229T1500Z/
Pocahontas-Webster-Hamilton-Hardin-Grundy-Black Hawk-
Including the cities of Fort Dodge, Rolfe, Laurens, Wellsburg,
Fonda, Cedar Falls, Conrad, Iowa Falls, Ackley, Gilmore City,
Webster City, Grundy Center, Eldora, Reinbeck, Waterloo, Dike,
and Pocahontas
148 PM CST Sun Dec 28 2025

...BLIZZARD WARNING IN EFFECT UNTIL 9 AM CST MONDAY...

* WHAT...Blizzard conditions. Additional snow accumulations of 1 to 
  3 inches. Winds gusting as high as 55 mph.

* WHERE...Portions of northern and north central Iowa.

* WHEN...Until 9 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  could impact the Monday morning commute. Gusty winds could bring 
  down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must travel, 
have a winter survival kit with you. If you get stranded, stay with 
your vehicle.

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ033-034-290600-
/O.UPG.KDMX.WW.Y.0022.000000T0000Z-251229T1200Z/
/O.EXA.KDMX.BZ.W.0005.000000T0000Z-251229T1500Z/
Sac-Calhoun-
Including the cities of Early, Lake City, Lake View, Schaller,
Manson, Pomeroy, Sac City, Odebolt, Wall Lake, and Rockwell City
148 PM CST Sun Dec 28 2025

...BLIZZARD WARNING IN EFFECT UNTIL 9 AM CST MONDAY...

* WHAT...Blizzard conditions. Additional snow accumulations up to 
  one inch. Winds gusting as high as 55 mph.

* WHERE...Calhoun and Sac Counties.

* WHEN...Until 9 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Areas of blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  could impact the Monday morning commute. Gusty winds could bring 
  down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must travel, 
have a winter survival kit with you. If you get stranded, stay with 
your vehicle.

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ004>007-015>017-024>028-290600-
/O.CON.KDMX.BZ.W.0005.000000T0000Z-251229T1500Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Humboldt-Wright-Franklin-Butler-Bremer-
Including the cities of Clarksville, Emmetsburg, Allison,
Estherville, Humboldt, Waverly, Algona, Shell Rock, Dumont,
Parkersburg, Britt, Clear Lake, Eagle Grove, Lake Mills,
Aplington, Hampton, Clarion, Forest City, Mason City, Garner,
Greene, Kanawha, Manly, Belmond, and Northwood
148 PM CST Sun Dec 28 2025

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 9 AM CST MONDAY...

* WHAT...Blizzard conditions. Additional snow accumulations between 
  2 and 4 inches. Winds gusting as high as 60 mph.

* WHERE...Much of northern into north central Iowa.

* WHEN...Until 9 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Widespread blowing 
  snow could significantly reduce visibility. The hazardous 
  conditions could impact the Monday morning commute. Gusty winds 
  could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must travel, 
have a winter survival kit with you. If you get stranded, stay with 
your vehicle.

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ057>062-070>073-290600-
/O.EXT.KDMX.WW.Y.0022.000000T0000Z-251229T1200Z/
Audubon-Guthrie-Dallas-Polk-Jasper-Poweshiek-Cass-Adair-Madison-
Warren-
Including the cities of Bayard, Guthrie Center, Audubon,
Greenfield, Panora, Exira, Atlantic, Des Moines, Fontanelle,
Carlisle, Newton, Norwalk, Winterset, Earlham, Indianola, Adel,
Casey, Perry, Grinnell, Waukee, Adair, and Stuart
148 PM CST Sun Dec 28 2025

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 AM CST MONDAY...

* WHAT...Snow and blowing snow. Additional snow accumulations up to 
  one inch. Winds gusting as high as 55 mph.

* WHERE...Portions of central into south central Iowa.

* WHEN...Until 6 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Gusty winds could 
  bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ044>046-290600-
/O.CON.KDMX.WW.Y.0022.000000T0000Z-251229T1200Z/
Crawford-Carroll-Greene-
Including the cities of Jefferson, Carroll, and Denison
148 PM CST Sun Dec 28 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST MONDAY...

* WHAT...Snow and blowing snow. Additional snow accumulations up to 
  one inch. Winds gusting as high as 55 mph.

* WHERE...Carroll, Crawford, and Greene Counties.

* WHEN...Until 6 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Gusty winds could 
  bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ047>050-290600-
/O.CON.KDMX.WW.Y.0022.000000T0000Z-251229T1500Z/
Boone-Story-Marshall-Tama-
Including the cities of Marshalltown, Ames, Boone, Dysart,
Gladbrook, Toledo, Traer, and Tama
148 PM CST Sun Dec 28 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST MONDAY...

* WHAT...Snow and blowing snow. Additional snow accumulations up to 
  one inch. Winds gusting as high as 55 mph.

* WHERE...Boone, Marshall, Story, and Tama Counties.

* WHEN...Until 9 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the Monday morning commute. Gusty winds 
  could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

Dodson
421 
WWUS43 KDMX 290314
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
914 PM CST Sun Dec 28 2025

...BLIZZARD CONDITIONS WILL CONTINUE OVER NORTHERN IOWA TONIGHT...

.A new area of snow is developing over southern Minnesota and 
northern Iowa this evening. This band of snow will settle south 
tonight and will bring additional accumulations up to 2 inches. This 
new snow combined with strong northwest winds with gusts over 50 mph 
at times, will produce blizzard conditions at times for parts of 
northern Iowa. This area of snow will settle to near the Interstate 
corridor before dissipating. Hazardous travel will continue as well 
within the advisory areas.

IAZ057-058-070>073-290415-
/O.CAN.KDMX.WW.Y.0022.000000T0000Z-251229T1200Z/
Audubon-Guthrie-Cass-Adair-Madison-Warren-
Including the cities of Norwalk, Winterset, Casey, Indianola,
Fontanelle, Stuart, Audubon, Adair, Exira, Atlantic, Bayard,
Carlisle, Guthrie Center, Earlham, Greenfield, and Panora
914 PM CST Sun Dec 28 2025

...WINTER WEATHER ADVISORY IS CANCELLED...

Accumulating snow is ending across the area.

$$

IAZ004>007-015>017-023>028-033>039-291315-
/O.CON.KDMX.BZ.W.0005.000000T0000Z-251229T1500Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-
Including the cities of Kanawha, Pocahontas, Aplington,
Clarksville, Laurens, Northwood, Estherville, Eagle Grove,
Gilmore City, Britt, Wall Lake, Clear Lake, Mason City, Rockwell
City, Schaller, Odebolt, Early, Webster City, Clarion,
Emmetsburg, Rolfe, Conrad, Waterloo, Grundy Center, Reinbeck,
Humboldt, Pomeroy, Eldora, Lake View, Sac City, Manly, Fonda,
Greene, Algona, Parkersburg, Shell Rock, Cedar Falls, Lake City,
Dumont, Waverly, Manson, Belmond, Lake Mills, Forest City, Fort
Dodge, Ackley, Allison, Iowa Falls, Dike, Garner, Wellsburg, and
Hampton
914 PM CST Sun Dec 28 2025

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 9 AM CST MONDAY...

* WHAT...Blizzard conditions. Additional snow accumulations up to 
  two inches. Winds gusting over 50 mph.

* WHERE...Portions of central, north central, northeast, northwest, 
  and west central Iowa.

* WHEN...Until 9 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Widespread blowing 
  snow could significantly reduce visibility and whiteout 
  conditions. The hazardous conditions could impact the Monday 
  morning commute. Gusty winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must travel, 
have a winter survival kit with you. If you get stranded, stay with 
your vehicle.

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ044>046-291200-
/O.CON.KDMX.WW.Y.0022.000000T0000Z-251229T1200Z/
Crawford-Carroll-Greene-
Including the cities of Denison, Carroll, and Jefferson
914 PM CST Sun Dec 28 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST MONDAY...

* WHAT...Snow. Additional snow accumulations up to one inch. Winds 
  gusting over 50 mph.

* WHERE...Carroll, Crawford, and Greene Counties.

* WHEN...Until 6 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Gusty winds could 
  bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ047>050-291315-
/O.CON.KDMX.WW.Y.0022.000000T0000Z-251229T1500Z/
Boone-Story-Marshall-Tama-
Including the cities of Marshalltown, Dysart, Toledo, Tama,
Gladbrook, Ames, Traer, and Boone
914 PM CST Sun Dec 28 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST MONDAY...

* WHAT...Snow. Additional snow accumulations up to one inch. Winds 
  gusting over 50 mph.

* WHERE...Boone, Marshall, Story, and Tama Counties.

* WHEN...Until 9 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the Monday morning commute. Gusty winds 
  could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ059>062-291200-
/O.CON.KDMX.WW.Y.0022.000000T0000Z-251229T1200Z/
Dallas-Polk-Jasper-Poweshiek-
Including the cities of Newton, Des Moines, Waukee, Grinnell,
Perry, and Adel
914 PM CST Sun Dec 28 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST MONDAY...

* WHAT...Snow. Additional snow accumulations up to one inch. Winds 
  gusting over 50 mph.

* WHERE...Dallas, Jasper, Polk, and Poweshiek Counties.

* WHEN...Until 6 AM CST Monday.

* IMPACTS...Plan on slippery road conditions. Gusty winds could 
  bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

Donavon
608 
WWUS43 KDMX 291005
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
405 AM CST Mon Dec 29 2025

IAZ004>007-015>017-023>028-033>039-291500-
/O.CON.KDMX.BZ.W.0005.000000T0000Z-251229T1500Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-
Including the cities of Lake City, Humboldt, Manly, Eagle Grove,
Shell Rock, Estherville, Rockwell City, Laurens, Algona, Mason
City, Sac City, Conrad, Clear Lake, Fort Dodge, Waverly, Ackley,
Belmond, Britt, Hampton, Eldora, Parkersburg, Greene, Lake Mills,
Manson, Clarion, Cedar Falls, Aplington, Wall Lake, Kanawha,
Odebolt, Clarksville, Schaller, Lake View, Grundy Center, Dike,
Iowa Falls, Dumont, Allison, Reinbeck, Pocahontas, Rolfe, Fonda,
Early, Pomeroy, Webster City, Northwood, Wellsburg, Emmetsburg,
Garner, Gilmore City, Waterloo, and Forest City
405 AM CST Mon Dec 29 2025

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING...

* WHAT...Blizzard conditions. Additional snow accumulations up to 
  two inches. Winds gusting over 50 mph.

* WHERE...Portions of central, north central, northeast, northwest, 
  and west central Iowa.

* WHEN...Until 9 AM CST this morning.

* IMPACTS...Plan on slippery road conditions. Widespread blowing 
  snow could significantly reduce visibility and whiteout 
  conditions. The hazardous conditions will impact the Monday 
  morning commute. Gusty winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must travel, 
have a winter survival kit with you. If you get stranded, stay with 
your vehicle.

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ044>046-291200-
/O.CON.KDMX.WW.Y.0022.000000T0000Z-251229T1200Z/
Crawford-Carroll-Greene-
Including the cities of Jefferson, Denison, and Carroll
405 AM CST Mon Dec 29 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST EARLY 
THIS MORNING...

* WHAT...Blowing snow. Winds gusting over 50 mph.

* WHERE...Carroll, Crawford, and Greene Counties.

* WHEN...Until 6 AM CST early this morning.

* IMPACTS...Plan on slippery road conditions. Gusty winds could 
  bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ047>050-291500-
/O.CON.KDMX.WW.Y.0022.000000T0000Z-251229T1500Z/
Boone-Story-Marshall-Tama-
Including the cities of Toledo, Traer, Marshalltown, Dysart,
Gladbrook, Ames, Boone, and Tama
405 AM CST Mon Dec 29 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS 
MORNING...

* WHAT...Blowing snow. Winds gusting over 50 mph.

* WHERE...Boone, Marshall, Story, and Tama Counties.

* WHEN...Until 9 AM CST this morning.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the Monday morning commute. Gusty winds 
  could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ059>062-291200-
/O.CON.KDMX.WW.Y.0022.000000T0000Z-251229T1200Z/
Dallas-Polk-Jasper-Poweshiek-
Including the cities of Waukee, Grinnell, Des Moines, Newton,
Adel, and Perry
405 AM CST Mon Dec 29 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST EARLY 
THIS MORNING...

* WHAT...Blowing snow. Winds gusting over 50 mph.

* WHERE...Dallas, Jasper, Polk, and Poweshiek Counties.

* WHEN...Until 6 AM CST early this morning.

* IMPACTS...Plan on slippery road conditions. Gusty winds could 
  bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

Jimenez
547 
WWUS43 KDMX 291203
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
603 AM CST Mon Dec 29 2025

IAZ044>046-059>062-291315-
/O.EXP.KDMX.WW.Y.0022.000000T0000Z-251229T1200Z/
Crawford-Carroll-Greene-Dallas-Polk-Jasper-Poweshiek-
Including the cities of Waukee, Jefferson, Grinnell, Denison, Des
Moines, Newton, Carroll, Adel, and Perry
603 AM CST Mon Dec 29 2025

...WINTER WEATHER ADVISORY HAS EXPIRED...

Snow showers will be possible through the morning leading to minor 
visibility reductions in rural areas, but effects will be short 
lived. Therefore the Advisory will be allowed to expire.

$$

IAZ004>007-015>017-023>028-033>039-291500-
/O.CON.KDMX.BZ.W.0005.000000T0000Z-251229T1500Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-
Including the cities of Lake City, Humboldt, Manly, Eagle Grove,
Shell Rock, Estherville, Rockwell City, Laurens, Algona, Mason
City, Sac City, Conrad, Clear Lake, Fort Dodge, Waverly, Ackley,
Belmond, Britt, Hampton, Eldora, Parkersburg, Greene, Lake Mills,
Manson, Clarion, Cedar Falls, Aplington, Wall Lake, Kanawha,
Odebolt, Clarksville, Schaller, Lake View, Grundy Center, Dike,
Iowa Falls, Dumont, Allison, Reinbeck, Pocahontas, Rolfe, Fonda,
Early, Pomeroy, Webster City, Northwood, Wellsburg, Emmetsburg,
Garner, Gilmore City, Waterloo, and Forest City
603 AM CST Mon Dec 29 2025

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING...

* WHAT...Blizzard conditions. Winds gusting as high as 45 mph.

* WHERE...Portions of central, north central, northeast, northwest, 
  and west central Iowa.

* WHEN...Until 9 AM CST this morning.

* IMPACTS...The hazardous conditions could impact the Monday morning 
  commute. Gusty winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must travel, 
have a winter survival kit with you. If you get stranded, stay with 
your vehicle.

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ047>050-291500-
/O.CON.KDMX.WW.Y.0022.000000T0000Z-251229T1500Z/
Boone-Story-Marshall-Tama-
Including the cities of Toledo, Traer, Marshalltown, Dysart,
Gladbrook, Ames, Boone, and Tama
603 AM CST Mon Dec 29 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS 
MORNING...

* WHAT...Blowing snow. Winds gusting over 50 mph.

* WHERE...Boone, Marshall, Story, and Tama Counties.

* WHEN...Until 9 AM CST this morning.

* IMPACTS...The hazardous conditions could impact the Monday morning 
  commute. Gusty winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

Jimenez
129 
WWUS43 KDMX 291442
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
842 AM CST Mon Dec 29 2025

IAZ004>007-015>017-024>028-035>039-291800-
/O.EXP.KDMX.BZ.W.0005.000000T0000Z-251229T1500Z/
/O.NEW.KDMX.WW.Y.0023.251229T1500Z-251229T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Humboldt-Wright-Franklin-Butler-Bremer-Webster-Hamilton-Hardin-
Grundy-Black Hawk-
Including the cities of Clear Lake, Belmond, Estherville,
Humboldt, Mason City, Forest City, Shell Rock, Ackley, Dumont,
Dike, Clarion, Conrad, Aplington, Iowa Falls, Grundy Center,
Kanawha, Reinbeck, Cedar Falls, Northwood, Garner, Hampton,
Emmetsburg, Britt, Waverly, Greene, Algona, Webster City, Eldora,
Waterloo, Clarksville, Manly, Wellsburg, Lake Mills, Fort Dodge,
Allison, Parkersburg, and Eagle Grove
842 AM CST Mon Dec 29 2025

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON CST TODAY...
...BLIZZARD WARNING WILL EXPIRE AT 9 AM CST THIS MORNING...

* WHAT...Blowing snow continues. Winds gusting as high as 45 mph 
  with visibilities under a mile possible.

* WHERE...Portions of north central into northwestern Iowa.

* WHEN...Until noon CST today.

* IMPACTS...The hazardous conditions could impact the Monday morning 
  commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

For the latest travel conditions, check the Iowa 511 app, 
www.511ia.org, or dial 511.

&&

$$

IAZ023-033-034-291545-
/O.EXP.KDMX.BZ.W.0005.000000T0000Z-251229T1500Z/
Pocahontas-Sac-Calhoun-
Including the cities of Rockwell City, Lake View, Early, Wall
Lake, Schaller, Manson, Lake City, Pomeroy, Sac City, Odebolt,
Fonda, Gilmore City, Laurens, Pocahontas, and Rolfe
842 AM CST Mon Dec 29 2025

...BLIZZARD WARNING WILL EXPIRE AT 9 AM CST THIS MORNING...

The blizzard conditions are improving as winds slowly subside this 
morning. Therefore, the blizzard warning will be allowed to expire. 
However, a winter weather advisory will continue for portions of the 
area as gusty winds produce isolated blowing and drifting snow 
through mid-day, especially in open and rural areas.

$$

IAZ047>050-291545-
/O.EXP.KDMX.WW.Y.0022.000000T0000Z-251229T1500Z/
Boone-Story-Marshall-Tama-
Including the cities of Ames, Traer, Marshalltown, Dysart, Tama,
Toledo, Gladbrook, and Boone
842 AM CST Mon Dec 29 2025

...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 AM CST THIS MORNING...

Impacts due to blowing snow have started to subside. Therefore, the 
winter weather advisory for Boone, Story, Marshall and Tama counties 
will be allowed to expire.

$$

Dodson

What forecasters said that day

The local office's own words before this blizzard warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Des Moines, IA wrote its last area forecast discussion before this blizzard warning went out at Dec 27, 5:55 PM CST, 3 hours 49 minutes earlier. Its key messages:

  • Widespread dense fog continues tonight into Sunday morning over much of the area. Visibilities of a quarter mile or less are possible.
  • Rain and a few rumbles of thunder possible tonight into early Sunday morning, mainly south.
  • Falling snow, strong winds and cold temperatures will make travel hazardous on Sunday, especially in northern Iowa. Wind gusts of over 50 mph and blizzard-like conditions are possible near the Iowa/Minnesota border.
Area forecast discussion, Dec 27, 5:55 PM CST, 3 hours 49 minutes before
Area Forecast Discussion
National Weather Service Des Moines IA
555 PM CST Sat Dec 27 2025

 ...Updated for the 00z Aviation Discussion...

.KEY MESSAGES...

- Widespread dense fog continues tonight into Sunday morning
  over much of the area. Visibilities of a quarter mile or less
  are possible.

- Rain and a few rumbles of thunder possible tonight into early
  Sunday morning, mainly south.

- Falling snow, strong winds and cold temperatures will make
  travel hazardous on Sunday, especially in northern Iowa. Wind
  gusts of over 50 mph and blizzard-like conditions are possible
  near the Iowa/Minnesota border.

&&

.DISCUSSION...
Issued at 319 PM CST Sat Dec 27 2025

Fog continues to impact much of the forecast area today, with patchy
fog in southern and central Iowa, then more widespread dense fog
over northern and north central Iowa. These areas of fog will likely
persist through the rest of today, with an expansion of the dense
fog expected again tonight. The Dense Fog Advisory remains in effect
for much of northern and northeastern Iowa and will be in effect
again for western, central and southern Iowa again tonight into
Sunday morning. Fog will continue into the morning, but will
eventually be pushed out by the cold front passing through on mid-
day Sunday.

The cold front passage tomorrow will come as a broad 500 mb trough
digs in over the central US, pulling cold air down from Canada and
generating a deepening surface low across the lower plains region.
Ahead of this system will first come a push of warm, moist air,
bringing the potential for rain and even a rumble of thunder up into
southern Iowa starting early Sunday morning into mid-day. Cold air
will also begin to fill in over northwest Iowa on the cold side of
the low Sunday morning. This, combined with southwest to northeast
oriented bands of strong frontogenetical forcing around 750 to 650
mb will produce bands of snowfall on the cold side of the low.
Locally higher snow rates are expected in these bands, but they
should be fairly progressive as they move eastward, limiting
residence time under the heavier rates. This should help to mitigate
significant snow accumulations, although localized amounts around 1
to 2 inches are certainly possible as far south as I-80. The area of
greater concern will be farther north, where a broad area of snow
will develop in the deformation zone of the deepening low. This will
increase the amount of time snow is falling, as well as the eventual
amounts.
These heavier amounts have been leaking farther and farther south
over the last few forecast cycles, increasing confidence in heavier
snow amounts in this area. Current forecast has a range of roughly 1
to 4 inches north of highway 20, although recent short range
guidance indicates even higher amounts possible along the
Iowa/Minnesota border.

Snow accumulations of 1 to 4 inches are enough to cause problems on
roadways on their own, but with the strong cold air advection will
also come very strong winds behind the cold front tomorrow.
Northwesterly winds of 30 to 40 mph are expected, with gusts in
excess of 50 mph possible tomorrow afternoon. While the bare ground
would theoretically help to negate blowing snow, winds of this
strength will still be able to loft freshly fallen snow into the
air. This will add an extra layer of impacts to the falling snow, as
the gusty winds lead to low visibilities and blizzard like
conditions. These impacts will be present both while snow is falling
and potentially for a time after, at least until snow is collected
into ditches and other storage areas through the evening and
overnight. There is also a hint that horizontal convective rolls may
develop Sunday evening as low level lapse rates steepen and the
entire mixed layer saturates within the dendritic growth zone. These
HCRs with the strong winds would produce sudden and drastic changes
to visibility for travelers Sunday afternoon and evening. Finally,
with the strong winds and colder air mass will come much colder
temperatures, especially into Sunday night. Temperatures drop into
the single digits and teens, with wind chills in the teens to near
twenty below zero overnight, adding yet another layer to the
impactful travel conditions, especially for those who become
stranded or are working through recovery efforts. Hazardous to
potentially dangerous travel is possible in northern Iowa mid-day
Sunday through the evening, and actions should be taken to try and
avoid travel at these times if at all possible.

&&

.AVIATION /00Z TAFS THROUGH 00Z MONDAY/...
Issued at 551 PM CST Sat Dec 27 2025

Poor aviation conditions are expected for a large portion of the
period. Widespread dense fog will be in place tonight along with
LIFR cigs. A cold front arrives late tonight and into tomorrow
morning and will bring gusty northwest winds and will diminish
the fog. However, rain changing to snow will occur. Strong wind
gusts will develop as well leading to reduced visibilities in
snow and blowing snow at most sites. Blizzard conditions remain
possible over northern Iowa including KMCW during the afternoon.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
Dense Fog Advisory until 9 AM CST Sunday for IAZ004>007-
015>017-024>028-036>039-048>050-061-062.
Winter Storm Watch from Sunday morning through late Sunday
night for IAZ004>007-016-017.
Winter Weather Advisory from 9 AM Sunday to 6 AM CST Monday
for IAZ015-024>028.
Dense Fog Advisory until 6 AM CST Sunday for IAZ023-033>035-
044>047-057>060-070>075-081>086-092>097.
Wind Advisory from 9 AM Sunday to 6 AM CST Monday for IAZ023-
033>039-044>050-057>062-070>075-081>086-092>097.

&&

DISCUSSION...Dodson
AVIATION...Donavon
Hazardous weather outlook, Dec 27, 3:39 AM CST, 18 hours 5 minutes before
Hazardous Weather Outlook
National Weather Service Des Moines IA
339 AM CST Sat Dec 27 2025

IAZ015-023>028-033>039-044>050-057>062-070>075-081>086-092>097-
280945-
Palo Alto-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-
339 AM CST Sat Dec 27 2025

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

A Dense Fog Advisory is in effect for the area. Please refer to
the National Weather Service website at weather.gov/desmoines for
further details.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Strong winds from the northwest will gust over 35 mph on Sunday,
bringing colder air and the potential for snow showers. Impacts to
travel are possible with slick spots and reduced visibility in
blowing snow.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

IAZ004>007-016-017-280945-
Emmet-Kossuth-Winnebago-Worth-Hancock-Cerro Gordo-
339 AM CST Sat Dec 27 2025

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

A Dense Fog Advisory is in effect for the area. Please refer to
the National Weather Service website at weather.gov/desmoines for
further details.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

A Winter Storm Watch is in effect for the area. Please refer to
the National Weather Service website at weather.gov/desmoines for
further details.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 28, 11:18 AM CSTSnow Squall Warning Significant damage threatDMXBoone, Dallas, Greene, Guthrie, Hamilton, Hardin and 2 more27 min
Dec 28, 11:30 AM CSTSnow Squall Warning Significant damage threatDMXBoone, Dallas, Madison, Polk, Story, Warren30 min
Dec 28, 11:47 AM CSTSnow Squall WarningDMXGrundy, Hamilton, Hardin, Marshall, Story28 min
Dec 28, 11:54 AM CSTSnow Squall Warning Significant damage threatDMXJasper, Marion, Marshall, Polk, Story, Warren36 min
Dec 28, 12:14 PM CSTSnow Squall WarningDMXGrundy, Hardin, Marshall, Story, Tama31 min
Dec 28, 12:19 PM CSTSnow Squall Warning Significant damage threatDMXJasper, Marion, Marshall, Polk, Warren26 min
Dec 28, 12:45 PM CSTSnow Squall Warning Significant damage threatDMXBlack Hawk, Grundy, Jasper, Marshall, Poweshiek, Tama30 min

Nearby

Blizzard Warnings in Iowa, 2025Every blizzard warning in 2025

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.