Wind Advisory 15, NWS Des Moines, IA

Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Black Hawk County, IA, Bremer County, IA, Butler County, IA, Cass County, IA, Clarke County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Grundy County, IA, Guthrie County, IA, Jasper County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA

477 
WWUS73 KDMX 091615
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
1015 AM CST Tue Dec 9 2025

IAZ057>062-070>075-081>086-092>097-100215-
/O.CON.KDMX.WI.Y.0015.251210T0600Z-251210T1800Z/
Audubon-Guthrie-Dallas-Polk-Jasper-Poweshiek-Cass-Adair-Madison-
Warren-Marion-Mahaska-Adams-Union-Clarke-Lucas-Monroe-Wapello-
Taylor-Ringgold-Decatur-Wayne-Appanoose-Davis-
Including the cities of Panora, Bloomfield, Centerville, Lenox,
Pella, Newton, Chariton, Bayard, Winterset, Norwalk, Allerton,
Osceola, Guthrie Center, Greenfield, Ottumwa, Adair, Fontanelle,
Carlisle, Adel, Bedford, Mount Ayr, Creston, Des Moines, Waukee,
Corning, Earlham, Perry, Lamoni, Corydon, Seymour, Audubon,
Atlantic, Oskaloosa, Exira, Stuart, Knoxville, New Market,
Grinnell, Leon, Indianola, Albia, Casey, and Humeston
1015 AM CST Tue Dec 9 2025

...WIND ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO NOON CST 
WEDNESDAY...

* WHAT...Northwest winds 20 to 30 mph with gusts up to 50-55 mph 
  expected.

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

* WHEN...From midnight tonight to noon CST Wednesday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

* ADDITIONAL DETAILS...The strong winds will cause shallow blowing 
  snow onto roads, which may then freeze and result in slick driving 
  conditions. In addition, crosswinds will make driving difficult 
  for high profile vehicles. Please use caution or consider altering 
  travel plans.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

Secure outdoor objects.

&&

$$

Lee

229 
WWUS73 KDMX 091931
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
131 PM CST Tue Dec 9 2025

IAZ057>060-100545-
/O.UPG.KDMX.WI.Y.0015.251210T0600Z-251210T1800Z/
/O.NEW.KDMX.HW.W.0006.251210T0300Z-251210T1500Z/
Audubon-Guthrie-Dallas-Polk-
Including the cities of Guthrie Center, Des Moines, Perry,
Panora, Adel, Audubon, Casey, Bayard, Exira, and Waukee
131 PM CST Tue Dec 9 2025

...HIGH WIND WARNING IN EFFECT FROM 9 PM THIS EVENING TO 9 AM CST 
WEDNESDAY...

* WHAT...Northwest winds 30 to 40 mph with gusts up to 60 mph 
  expected.

* WHERE...Dallas, Polk, Audubon, and Guthrie Counties.

* WHEN...From 9 PM this evening to 9 AM CST Wednesday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be difficult, 
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain in the lower levels of your home during the windstorm, and 
avoid windows. Watch for falling debris and tree limbs. Use caution 
if you must drive.

&&

$$

IAZ004>007-015>017-023>026-033>037-044>049-100545-
/O.NEW.KDMX.HW.W.0006.251210T0300Z-251210T1500Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Sac-Calhoun-Webster-Hamilton-
Hardin-Crawford-Carroll-Greene-Boone-Story-Marshall-
Including the cities of Carroll, Ackley, Iowa Falls, Northwood,
Estherville, Eldora, Pocahontas, Schaller, Webster City, Pomeroy,
Clear Lake, Lake View, Kanawha, Laurens, Mason City, Belmond,
Rolfe, Denison, Rockwell City, Fonda, Clarion, Lake Mills,
Hampton, Algona, Emmetsburg, Sac City, Gilmore City, Early,
Boone, Marshalltown, Ames, Manson, Garner, Manly, Wall Lake,
Odebolt, Lake City, Eagle Grove, Fort Dodge, Forest City, Britt,
Jefferson, and Humboldt
131 PM CST Tue Dec 9 2025

...HIGH WIND WARNING IN EFFECT FROM 9 PM THIS EVENING TO 9 AM CST 
WEDNESDAY...

* WHAT...Northwest winds 30 to 40 mph with gusts up to 60 mph 
  expected.

* WHERE...Portions of western, central, and northern Iowa.

* WHEN...From 9 PM this evening to 9 AM CST Wednesday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be difficult, 
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain in the lower levels of your home during the windstorm, and 
avoid windows. Watch for falling debris and tree limbs. Use caution 
if you must drive.

&&

$$

IAZ061-062-070>075-081>086-092>097-100545-
/O.EXT.KDMX.WI.Y.0015.251210T0600Z-251210T1500Z/
Jasper-Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-
Union-Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
Including the cities of Bloomfield, Centerville, Lenox, Pella,
Newton, Chariton, Norwalk, Winterset, Allerton, Osceola,
Greenfield, Ottumwa, Adair, Fontanelle, Carlisle, Mount Ayr,
Bedford, Creston, Earlham, Lamoni, Corydon, Seymour, Atlantic,
Oskaloosa, New Market, Stuart, Knoxville, Grinnell, Leon,
Indianola, Albia, Corning, and Humeston
131 PM CST Tue Dec 9 2025

...WIND ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CST 
WEDNESDAY...

* WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph 
  expected.

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

* WHEN...From midnight tonight to 9 AM CST Wednesday.

* IMPACTS...Gusty winds will blow around unsecured objects and 
  outdoor decorations. Tree limbs could be blown down and a few 
  power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

Secure outdoor objects.

&&

$$

Lee

296 
WWUS73 KDMX 100214
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
814 PM CST Tue Dec 9 2025

IAZ004>007-015>017-023>026-033>037-044>049-057>060-101215-
/O.CON.KDMX.HW.W.0006.251210T0300Z-251210T1500Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Sac-Calhoun-Webster-Hamilton-
Hardin-Crawford-Carroll-Greene-Boone-Story-Marshall-Audubon-
Guthrie-Dallas-Polk-
Including the cities of Garner, Lake City, Ackley, Belmond,
Estherville, Humboldt, Wall Lake, Iowa Falls, Pocahontas, Lake
View, Denison, Sac City, Pomeroy, Jefferson, Rockwell City,
Rolfe, Manson, Des Moines, Fonda, Waukee, Forest City, Algona,
Northwood, Bayard, Gilmore City, Schaller, Perry, Kanawha,
Audubon, Lake Mills, Clear Lake, Laurens, Webster City, Panora,
Mason City, Marshalltown, Casey, Adel, Exira, Emmetsburg,
Hampton, Manly, Ames, Eldora, Clarion, Guthrie Center, Odebolt,
Britt, Eagle Grove, Fort Dodge, Boone, Carroll, and Early
814 PM CST Tue Dec 9 2025

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 AM CST WEDNESDAY...

* WHAT...Northwest winds 30 to 40 mph with gusts up to 60 mph 
  expected.

* WHERE...Portions of western, central and northern Iowa.

* WHEN...Until 9 AM CST Wednesday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be difficult, 
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain in the lower levels of your home during the windstorm, and 
avoid windows. Watch for falling debris and tree limbs. Use caution 
if you must drive.

&&

$$

IAZ061-062-070>075-081>086-092>097-101215-
/O.CON.KDMX.WI.Y.0015.251210T0600Z-251210T1500Z/
Jasper-Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-
Union-Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
Including the cities of Greenfield, Leon, Seymour, Ottumwa,
Fontanelle, Atlantic, Chariton, Corydon, Creston, Grinnell,
Newton, Humeston, Carlisle, Earlham, Adair, Mount Ayr, Lamoni,
Centerville, Allerton, Osceola, Bedford, Stuart, Indianola,
Albia, Knoxville, Lenox, Corning, Oskaloosa, Winterset, Norwalk,
Bloomfield, New Market, and Pella
814 PM CST Tue Dec 9 2025

...WIND ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM CST 
WEDNESDAY...

* WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph 
  expected.

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

* WHEN...From midnight tonight to 9 AM CST Wednesday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

Secure outdoor objects.

&&

$$

Dodson

502 
WWUS73 KDMX 101003
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
403 AM CST Wed Dec 10 2025

IAZ004>007-015>017-023>026-033>037-044>049-057>060-101500-
/O.CON.KDMX.HW.W.0006.000000T0000Z-251210T1500Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Sac-Calhoun-Webster-Hamilton-
Hardin-Crawford-Carroll-Greene-Boone-Story-Marshall-Audubon-
Guthrie-Dallas-Polk-
Including the cities of Fonda, Carroll, Panora, Eagle Grove,
Waukee, Humboldt, Exira, Pocahontas, Lake City, Webster City,
Hampton, Early, Manson, Algona, Jefferson, Adel, Clear Lake,
Gilmore City, Rockwell City, Bayard, Estherville, Eldora,
Marshalltown, Audubon, Guthrie Center, Garner, Casey, Lake View,
Schaller, Mason City, Boone, Ackley, Britt, Denison, Manly,
Emmetsburg, Perry, Des Moines, Laurens, Fort Dodge, Lake Mills,
Odebolt, Forest City, Ames, Kanawha, Clarion, Rolfe, Sac City,
Pomeroy, Northwood, Wall Lake, Iowa Falls, and Belmond
403 AM CST Wed Dec 10 2025

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING...

* WHAT...Northwest winds 30 to 40 mph with gusts up to 60 mph 
  expected.

* WHERE...Portions of western, central, and northern Iowa.

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

* IMPACTS...Damaging winds can blow down trees and power lines. 
  Widespread power outages are possible. Travel will be difficult, 
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain in the lower levels of your home during the windstorm, and 
avoid windows. Watch for falling debris and tree limbs. Use caution 
if you must drive.

&&

$$

IAZ061-062-070>075-081>086-092>097-101500-
/O.CON.KDMX.WI.Y.0015.000000T0000Z-251210T1500Z/
Jasper-Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-
Union-Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
Including the cities of Centerville, Indianola, Atlantic,
Carlisle, Pella, Bloomfield, Earlham, Lamoni, Albia, Corydon,
Winterset, Norwalk, Humeston, Allerton, Knoxville, Ottumwa, Leon,
Greenfield, Newton, Oskaloosa, New Market, Fontanelle, Stuart,
Bedford, Osceola, Creston, Corning, Grinnell, Chariton, Mount
Ayr, Lenox, Seymour, and Adair
403 AM CST Wed Dec 10 2025

...WIND ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING...

* WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph 
  expected.

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

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

* IMPACTS...Gusty winds will blow around unsecured objects and 
  outdoor decorations. Tree limbs could be blown down and a few 
  power outages may result.

* ADDITIONAL DETAILS...The strong winds may cause shallow blowing 
  snow onto roads, which may then freeze and result in slick driving 
  conditions. In addition, crosswinds will make driving difficult 
  for high profile vehicles. Please use caution or consider altering 
  travel plans.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

Secure outdoor objects.

&&

$$

Hagenhoff

980 
WWUS73 KDMX 101149
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
549 AM CST Wed Dec 10 2025

IAZ004>007-015>017-023>026-033>037-044>049-057>060-101500-
/O.CON.KDMX.HW.W.0006.000000T0000Z-251210T1500Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Sac-Calhoun-Webster-Hamilton-
Hardin-Crawford-Carroll-Greene-Boone-Story-Marshall-Audubon-
Guthrie-Dallas-Polk-
Including the cities of Fonda, Carroll, Panora, Eagle Grove,
Waukee, Humboldt, Exira, Pocahontas, Lake City, Webster City,
Hampton, Early, Manson, Algona, Jefferson, Adel, Clear Lake,
Gilmore City, Rockwell City, Bayard, Estherville, Eldora,
Marshalltown, Audubon, Guthrie Center, Garner, Casey, Lake View,
Schaller, Mason City, Boone, Ackley, Britt, Denison, Manly,
Emmetsburg, Perry, Des Moines, Laurens, Fort Dodge, Lake Mills,
Odebolt, Forest City, Ames, Kanawha, Clarion, Rolfe, Sac City,
Pomeroy, Northwood, Wall Lake, Iowa Falls, and Belmond
549 AM CST Wed Dec 10 2025

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING...

* WHAT...Northwest winds 30 to 40 mph with gusts up to 60 mph 
  expected.

* WHERE...Portions of western, central, and northern Iowa.

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

* IMPACTS...Damaging winds can blow down trees and power lines. 
  Widespread power outages are possible. Travel will be difficult, 
  especially for high profile vehicles.

* ADDITIONAL DETAILS...The strong winds may cause shallow blowing 
  snow onto roads, which may then freeze and result in slick driving 
  conditions. In addition, crosswinds will make driving difficult 
  for high profile vehicles. Please use caution or consider altering 
  travel plans.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain in the lower levels of your home during the windstorm, and 
avoid windows. Watch for falling debris and tree limbs. Use caution 
if you must drive.

&&

$$

IAZ027-028-038-039-050-101500-
/O.EXB.KDMX.WI.Y.0015.251210T1200Z-251210T1500Z/
Butler-Bremer-Grundy-Black Hawk-Tama-
Including the cities of Greene, Traer, Shell Rock, Grundy Center,
Cedar Falls, Clarksville, Tama, Dysart, Aplington, Waterloo,
Dumont, Parkersburg, Dike, Wellsburg, Reinbeck, Toledo, Allison,
Gladbrook, Conrad, and Waverly
549 AM CST Wed Dec 10 2025

...WIND ADVISORY IN EFFECT UNTIL 9 AM CST THIS MORNING...

* WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph 
  expected.

* WHERE...Grundy, Tama, Butler, Black Hawk, and Bremer Counties.

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

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

* ADDITIONAL DETAILS...The strong winds may cause shallow blowing 
  snow onto roads, which may then freeze and result in slick driving 
  conditions. In addition, crosswinds will make driving difficult 
  for high profile vehicles. Please use caution or consider altering 
  travel plans.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

Secure outdoor objects.

&&

$$

IAZ061-062-070>075-081>086-092>097-101500-
/O.CON.KDMX.WI.Y.0015.000000T0000Z-251210T1500Z/
Jasper-Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-
Union-Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
Including the cities of Centerville, Indianola, Atlantic,
Carlisle, Pella, Bloomfield, Earlham, Lamoni, Albia, Corydon,
Winterset, Norwalk, Humeston, Allerton, Knoxville, Ottumwa, Leon,
Greenfield, Newton, Oskaloosa, New Market, Fontanelle, Stuart,
Bedford, Osceola, Creston, Corning, Grinnell, Chariton, Mount
Ayr, Lenox, Seymour, and Adair
549 AM CST Wed Dec 10 2025

...WIND ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING...

* WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mph 
  expected.

* WHERE...Portions of central, south central, southeast, and 
  southwest Iowa.

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

* IMPACTS...Gusty winds will blow around unsecured objects and 
  outdoor decorations. Tree limbs could be blown down and a few 
  power outages may result.

* ADDITIONAL DETAILS...The strong winds may cause shallow blowing 
  snow onto roads, which may then freeze and result in slick driving 
  conditions. In addition, crosswinds will make driving difficult 
  for high profile vehicles. Please use caution or consider altering 
  travel plans.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

Secure outdoor objects.

&&

$$

Hagenhoff

808 
WWUS73 KDMX 101330
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
730 AM CST Wed Dec 10 2025

IAZ004>007-015>017-023>026-033>037-044>046-101430-
/O.CAN.KDMX.HW.W.0006.000000T0000Z-251210T1500Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Sac-Calhoun-Webster-Hamilton-
Hardin-Crawford-Carroll-Greene-
Including the cities of Pocahontas, Manly, Eldora, Emmetsburg,
Lake Mills, Algona, Wall Lake, Webster City, Hampton, Rockwell
City, Garner, Clarion, Estherville, Jefferson, Schaller, Fonda,
Lake View, Pomeroy, Northwood, Manson, Forest City, Denison,
Gilmore City, Kanawha, Early, Britt, Mason City, Lake City,
Ackley, Laurens, Belmond, Fort Dodge, Rolfe, Sac City, Eagle
Grove, Odebolt, Carroll, Iowa Falls, Humboldt, and Clear Lake
730 AM CST Wed Dec 10 2025

...HIGH WIND WARNING IS CANCELLED...

Wind continue to ease this morning, so the High Wind Warning has 
been canceled. Wind gusts up to 40mph possible through 9am.

$$

IAZ047>049-057>060-101500-
/O.CON.KDMX.HW.W.0006.000000T0000Z-251210T1500Z/
Boone-Story-Marshall-Audubon-Guthrie-Dallas-Polk-
Including the cities of Waukee, Audubon, Adel, Des Moines, Boone,
Marshalltown, Ames, Exira, Panora, Casey, Perry, Bayard, and
Guthrie Center
730 AM CST Wed Dec 10 2025

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING...

* WHAT...Northwest winds 25 to 30 mph with gusts up to 45 mph.

* WHERE...Boone, Dallas, Marshall, Polk, Story, Audubon, and Guthrie 
  Counties.

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

* IMPACTS...Damaging winds can blow down trees and power lines. 
  Widespread power outages are possible. Travel will be difficult, 
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain in the lower levels of your home during the windstorm, and 
avoid windows. Watch for falling debris and tree limbs. Use caution 
if you must drive.

&&

$$

IAZ027-028-038-039-050-061-062-070>075-081>086-092>097-101500-
/O.CON.KDMX.WI.Y.0015.000000T0000Z-251210T1500Z/
Butler-Bremer-Grundy-Black Hawk-Tama-Jasper-Poweshiek-Cass-Adair-
Madison-Warren-Marion-Mahaska-Adams-Union-Clarke-Lucas-Monroe-
Wapello-Taylor-Ringgold-Decatur-Wayne-Appanoose-Davis-
Including the cities of Bedford, Waverly, Oskaloosa, Conrad,
Allison, Gladbrook, Grundy Center, Dike, Humeston, Adair,
Osceola, Lenox, Pella, Wellsburg, Creston, Newton, Mount Ayr,
Winterset, Indianola, Parkersburg, Tama, Stuart, Cedar Falls,
Ottumwa, Knoxville, Centerville, Greenfield, Traer, Clarksville,
Atlantic, Aplington, Bloomfield, Shell Rock, Earlham, Chariton,
Lamoni, Corydon, Waterloo, Seymour, Grinnell, Carlisle, Allerton,
Reinbeck, Norwalk, New Market, Dysart, Corning, Dumont,
Fontanelle, Leon, Toledo, Greene, and Albia
730 AM CST Wed Dec 10 2025

...WIND ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING...

* WHAT...Northwest winds 25 to 30 mph with gusts up to 45 mph.

* WHERE...Portions of central, north central, northeast, south 
  central, southeast, and southwest Iowa.

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

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

Secure outdoor objects.

&&

$$

Jimenez

976 
WWUS73 KDMX 101450
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
850 AM CST Wed Dec 10 2025

IAZ047>049-057>060-101600-
/O.EXP.KDMX.HW.W.0006.000000T0000Z-251210T1500Z/
Boone-Story-Marshall-Audubon-Guthrie-Dallas-Polk-
Including the cities of Exira, Casey, Perry, Bayard, Guthrie
Center, Panora, Waukee, Ames, Adel, Boone, Audubon, Marshalltown,
and Des Moines
850 AM CST Wed Dec 10 2025

...HIGH WIND WARNING WILL EXPIRE AT 9 AM CST THIS MORNING...

The strongest winds and wind gusts have mainly ended and the warning 
will be allowed to expire. The wind will continue to be gusty from 
the northwest sustained at 15 to near 30 mph with gusts up to around 
40 mph for a few more hours as winds continue to decrease this 
morning.

$$

IAZ027-028-038-039-050-061-062-070>075-081>086-092>097-101600-
/O.EXP.KDMX.WI.Y.0015.000000T0000Z-251210T1500Z/
Butler-Bremer-Grundy-Black Hawk-Tama-Jasper-Poweshiek-Cass-Adair-
Madison-Warren-Marion-Mahaska-Adams-Union-Clarke-Lucas-Monroe-
Wapello-Taylor-Ringgold-Decatur-Wayne-Appanoose-Davis-
Including the cities of Lamoni, Conrad, Grundy Center, Aplington,
Tama, Corydon, Humeston, Oskaloosa, Adair, Bloomfield, Newton,
Mount Ayr, Cedar Falls, Norwalk, Dumont, New Market, Centerville,
Reinbeck, Chariton, Fontanelle, Winterset, Traer, Waterloo, Shell
Rock, Ottumwa, Dike, Osceola, Allerton, Greenfield, Grinnell,
Wellsburg, Knoxville, Earlham, Atlantic, Indianola, Carlisle,
Clarksville, Corning, Creston, Albia, Bedford, Lenox, Toledo,
Waverly, Pella, Parkersburg, Gladbrook, Seymour, Leon, Allison,
Stuart, Dysart, and Greene
850 AM CST Wed Dec 10 2025

...WIND ADVISORY WILL EXPIRE AT 9 AM CST THIS MORNING...

Wind speeds are diminishing and thus the advisory will be allowed to 
expire. The wind will continue to be gusty from the northwest 
sustained at 15 to near 30 mph with gusts up to around 40 mph for a 
few more hours as winds continue to decrease this morning.

$$

Ansorge

Area Forecast Discussion
National Weather Service Des Moines IA
1104 PM CST Mon Dec 8 2025

 ...Updated for the 06z Aviation Discussion...

.KEY MESSAGES...

- Possible blizzard conditions developing Tuesday night into
  Wednesday morning as strong, gusty winds of 40 to 55+ mph
  unlock existing snow pack. Narrow snow bands are also possible
  after midnight Wednesday into Wednesday morning.

- Before Tuesday night, there is an area of fog moving through
  northern Iowa into tonight. Conditions will be milder on
  Tuesday as well with light wintry precipitation far northern
  and northeastern Iowa with any accumulations minimal.

- Active pattern continues through the rest of the week with
  additional snow chances and colder air returning.

&&

.DISCUSSION...
Issued at 253 PM CST Mon Dec 8 2025

An active weather pattern continues into this second week of
December as northwesterly flow aloft prevails and allows for a
series of shortwave troughs (aka clippers) to track through the
region. Before we get to the clippers and their associated weather,
GOES-East Day Cloud Phase Distinction RGB shows plenty of clouds
over northern and western Iowa with a few peeks at the snow pack
over southeastern Iowa. In addition, an area of fog has been
lingering over northwest Iowa with the Iowa DOT webcam at
Estherville showing a foggy scene. This fog will slowly move
eastward this afternoon into tonight largely north of Highway 30.
Will have to monitor trends into this evening if visibility declines
below a quarter mile, but so far much of today has been a 1/2 mile
at worst in Estherville, but generally above a mile.

As we move into Tuesday, one clipper will be passing into the
western Great Lakes with the next robust clipper moving into North
Dakota Tuesday morning. Between these, strong low level warm air
advection will set up and bring milder air into Iowa. However, cloud
cover will be stout, especially over northern into central Iowa, and
with the snow cover over the state, the initial National Blend of
Models (NBM) is overdone with its degree of mixing and thus warming.
So, have shrunk the diurnal temperature range and am now closer to
the dewpoint temperature, which cuts highs by 3 to 4 degrees. As the
robust clipper approaches from the northwest, its strong forcing
will move over northern and eastern Iowa in the afternoon and
evening. While low level temperatures will be warm enough for rain,
near surface temperatures could be close to or just below freezing.
This may result in a short period of freezing rain over the far
northern and northeastern counties, which transitions to rain as the
warmer air and diabatic processes win out. Any icing looks to be
minimal and relegated to elevated surfaces. With the clipper racing
off to the east, the rain may switch briefly to and end as a bit of
light snow with accumulations similarly minimal.

The big story will be the strong winds that crank up as a cold front
slams through the state Tuesday night with the potential for ground
blizzard conditions developing. There look to be two waves of cold
air advection with the first arriving in the evening. BUFKIT
soundings from the NAM and RAP show impressive winds at 850mb
topping 55 knots for 6 or more hours dropping over much of the
state. As the profile cools, deep, mechanical mixing will begin to
tap into these stronger winds so wind speeds were adjusted upward
with a blend of WRF-ARW and NBM 90th percentile. This pushes gusts
up to around 50 knots/58 mph and high wind warning criteria over
northern Iowa to as far south as Highway 30. However, it is December
and there is a snow pack on the ground, which raises the question of
blowing snow and ground blizzard. The Waterloo snow observer and
here at our office in Johnston both have a blowable snow pack on the
ground at this hour. Temperatures into Tuesday are likely to rise
above freezing, creating a crust on the snow. However, the crust is
likely to be thin and breakable given the prolonged strong wind
speeds forecast Tuesday night. We've seen past events where this has
occurred, including the February 7, 2016 blizzard that had higher
temperatures and a deeper crust than this event will have. So, as
temperatures cool and the winds blow, this snow pack will be
released resulting in significant blowing and drifting snow and
visibility reductions. This has resulted in the issuance of a Winter
Storm Watch for (ground) blizzard conditions. As another round of
cold air advection coupled with a trailing strong pressure rise
drops in towards sunrise Wednesday with an elevated front, this
should keep the blowing snow going into the daytime hours waning
towards Wednesday afternoon. As if this all was not enough, the
second push of cold air also steepens low level lapse rates
resulting in low level instability with saturation reaching into the
dendritic growth zone (DGZ). Snow squall parameter, especially based
off of the 1km layer version, are pinging with this boundary from
around a little after midnight over northern Iowa to early to mid-
morning over southern Iowa. Any falling snow will add to the blowing
snow and visibility reductions. Bottom line is that blowing
snow is likely to have an large impact late Tuesday night into
Wednesday morning, especially over northern Iowa, and impacts to
travel in the form of slick roads and reduced visibility are
increasing.

The active pattern continues through the end of the week with
additional clippers and snow chances with temperatures colder
Wednesday and Thursday lower compared to Tuesday. Even colder air
may arrive by late this week into this weekend.

&&

.AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/...
Issued at 1104 PM CST Mon Dec 8 2025

IFR cigs are currently in place across north central IA and the
bank continues to lift northeast. It is clearing FOD now and
will clear MCW by 09Z. Rain and the potential for MVFR cigs
will overspread northern IA late Tuesday afternoon. Winds will
shift from south to west Tuesday, then northwest Tuesday night
and increase markedly with gusts possibly to 50 kts just after
the current period.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
Winter Storm Watch from late Tuesday night through Wednesday
morning for IAZ004>007-015>017-023>028-033>039-044>050.

&&

DISCUSSION...Ansorge
AVIATION...Borghoff

Hazardous Weather Outlook
National Weather Service Des Moines IA
251 PM CST Mon Dec 8 2025

IAZ004>007-015>017-023>028-033>039-044>050-092100-
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-
251 PM CST Mon Dec 8 2025

This Hazardous Weather Outlook is for portions of central and
north central Iowa.

.DAY ONE...This afternoon and tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

A Winter Storm Watch for potential blizzard conditions is in
effect for the area Tuesday night and Wednesday morning. Please
refer to the National Weather Service website at
weather.gov/desmoines for further details.

Additional accumulating snowfall is expected Thursday and Thursday
night. Wind chill values of 20 below zero or colder are possible
Friday night and Saturday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation for upcoming winter weather conditions is
possible beginning Tuesday night.

IAZ057>062-070>075-081>086-092>097-092100-
Audubon-Guthrie-Dallas-Polk-Jasper-Poweshiek-Cass-Adair-Madison-
Warren-Marion-Mahaska-Adams-Union-Clarke-Lucas-Monroe-Wapello-
Taylor-Ringgold-Decatur-Wayne-Appanoose-Davis-
251 PM CST Mon Dec 8 2025

This Hazardous Weather Outlook is for portions of central and
south central Iowa.

.DAY ONE...This afternoon and tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Significant blowing and drifting of snow is possible Tuesday night
and Wednesday morning as wind gusts of 50 mph or greater arrive.

Additional accumulating snowfall is expected Thursday and Thursday
night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation for upcoming winter weather conditions is
possible beginning Tuesday night.