Wind Advisory 16, NWS Des Moines, IA

Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cerro Gordo County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Emmet County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Humboldt County, IA, Jasper County, IA, Kossuth County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Palo Alto County, IA, Pocahontas County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Sac County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA

242 
WWUS73 KDMX 171547
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
947 AM CST Wed Dec 17 2025

IAZ004-005-015-023>025-033>036-044>048-057>060-070>073-081>083-
092>094-180200-
/O.CON.KDMX.WI.Y.0016.251218T1500Z-251219T0000Z/
Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Wright-Sac-Calhoun-
Webster-Hamilton-Crawford-Carroll-Greene-Boone-Story-Audubon-
Guthrie-Dallas-Polk-Cass-Adair-Madison-Warren-Adams-Union-Clarke-
Taylor-Ringgold-Decatur-
Including the cities of Corning, Earlham, Clarion, Fontanelle,
Creston, Audubon, Odebolt, Pomeroy, Bedford, Algona, Jefferson,
Manson, Webster City, Emmetsburg, Des Moines, Exira, Indianola,
Norwalk, Mount Ayr, New Market, Fort Dodge, Wall Lake, Humboldt,
Panora, Ames, Winterset, Gilmore City, Eagle Grove, Osceola,
Bayard, Pocahontas, Carroll, Laurens, Adel, Carlisle,
Estherville, Denison, Atlantic, Stuart, Rolfe, Guthrie Center,
Perry, Sac City, Fonda, Greenfield, Adair, Casey, Belmond,
Waukee, Leon, Boone, Lenox, Lake View, Rockwell City, Lake City,
Early, Lamoni, and Schaller
947 AM CST Wed Dec 17 2025

...WIND ADVISORY REMAINS IN EFFECT FROM 9 AM TO 6 PM CST THURSDAY...

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected.

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

* WHEN...From 9 AM to 6 PM CST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects, 
  including holiday 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.

&&

$$

Hagenhoff

960 
WWUS73 KDMX 171934
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
134 PM CST Wed Dec 17 2025

IAZ007-017-026>028-037>039-049-050-061-062-074-075-084-085-095-096-
180545-
/O.EXB.KDMX.WI.Y.0016.251218T1800Z-251219T0000Z/
Worth-Cerro Gordo-Franklin-Butler-Bremer-Hardin-Grundy-Black Hawk-
Marshall-Tama-Jasper-Poweshiek-Marion-Mahaska-Lucas-Monroe-Wayne-
Appanoose-
Including the cities of Knoxville, Allerton, Dysart, Northwood,
Waverly, Chariton, Dike, Grundy Center, Corydon, Pella, Eldora,
Albia, Tama, Toledo, Grinnell, Manly, Ackley, Greene, Oskaloosa,
Cedar Falls, Wellsburg, Newton, Humeston, Centerville, Gladbrook,
Marshalltown, Shell Rock, Aplington, Seymour, Traer, Dumont,
Allison, Clarksville, Parkersburg, Conrad, Mason City, Iowa
Falls, Clear Lake, Waterloo, Reinbeck, and Hampton
134 PM CST Wed Dec 17 2025

...WIND ADVISORY IN EFFECT FROM NOON TO 6 PM CST THURSDAY...

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected.

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

* WHEN...From noon to 6 PM CST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects, 
  including holiday 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.

&&

$$

IAZ006-016-180545-
/O.EXA.KDMX.WI.Y.0016.251218T1500Z-251219T0000Z/
Winnebago-Hancock-
Including the cities of Lake Mills, Britt, Garner, Forest City,
and Kanawha
134 PM CST Wed Dec 17 2025

...WIND ADVISORY IN EFFECT FROM 9 AM TO 6 PM CST THURSDAY...

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected.

* WHERE...Hancock and Winnebago Counties.

* WHEN...From 9 AM to 6 PM CST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects, 
  including holiday 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.

&&

$$

IAZ004-005-015-023>025-033>036-044>048-057>060-070>073-081>083-
092>094-180545-
/O.CON.KDMX.WI.Y.0016.251218T1500Z-251219T0000Z/
Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Wright-Sac-Calhoun-
Webster-Hamilton-Crawford-Carroll-Greene-Boone-Story-Audubon-
Guthrie-Dallas-Polk-Cass-Adair-Madison-Warren-Adams-Union-Clarke-
Taylor-Ringgold-Decatur-
Including the cities of Indianola, Carlisle, Lake View, Casey,
Bedford, Rolfe, Pocahontas, Manson, Pomeroy, Earlham, Webster
City, Humboldt, Odebolt, Rockwell City, Wall Lake, Emmetsburg,
Adair, Ames, Jefferson, Winterset, Atlantic, Denison, Norwalk,
Boone, Lenox, Carroll, Corning, Greenfield, Gilmore City, Early,
Clarion, Perry, Eagle Grove, Schaller, Stuart, Laurens, Adel,
Mount Ayr, Fonda, Estherville, Lamoni, Audubon, Fort Dodge,
Exira, Panora, Des Moines, Lake City, Osceola, Waukee, Sac City,
Algona, Creston, Belmond, New Market, Fontanelle, Leon, Bayard,
and Guthrie Center
134 PM CST Wed Dec 17 2025

...WIND ADVISORY REMAINS IN EFFECT FROM 9 AM TO 6 PM CST THURSDAY...

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected.

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

* WHEN...From 9 AM to 6 PM CST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects, 
  including holiday 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.

&&

$$

Bury

652 
WWUS73 KDMX 180244
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
844 PM CST Wed Dec 17 2025

IAZ086-097-181245-
/O.EXB.KDMX.WI.Y.0016.251218T1800Z-251219T0300Z/
Wapello-Davis-
Including the cities of Bloomfield and Ottumwa
844 PM CST Wed Dec 17 2025

...WIND ADVISORY IN EFFECT FROM NOON TO 9 PM CST THURSDAY...

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected.

* WHERE...Davis and Wapello Counties.

* WHEN...From noon to 9 PM CST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects, 
  including holiday 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.

&&

$$

IAZ004>006-015-016-023>025-033>036-044>048-057>060-070>073-081>083-
092>094-181245-
/O.EXT.KDMX.WI.Y.0016.251218T1500Z-251219T0300Z/
Emmet-Kossuth-Winnebago-Palo Alto-Hancock-Pocahontas-Humboldt-
Wright-Sac-Calhoun-Webster-Hamilton-Crawford-Carroll-Greene-Boone-
Story-Audubon-Guthrie-Dallas-Polk-Cass-Adair-Madison-Warren-Adams-
Union-Clarke-Taylor-Ringgold-Decatur-
Including the cities of Panora, Des Moines, Garner, Lenox, Rolfe,
Exira, Adel, Fontanelle, Mount Ayr, Britt, Osceola, Bedford,
Bayard, Fonda, Adair, Lake View, Emmetsburg, Stuart, Ames,
Algona, Schaller, Forest City, Eagle Grove, Clarion, Guthrie
Center, Sac City, Indianola, Lamoni, Greenfield, Estherville,
Gilmore City, Norwalk, Denison, Odebolt, Wall Lake, Winterset,
Jefferson, Early, Webster City, Leon, Lake City, New Market,
Carlisle, Belmond, Waukee, Carroll, Laurens, Boone, Casey,
Earlham, Humboldt, Perry, Pomeroy, Creston, Rockwell City,
Audubon, Pocahontas, Fort Dodge, Manson, Atlantic, Corning,
Kanawha, and Lake Mills
844 PM CST Wed Dec 17 2025

...WIND ADVISORY NOW IN EFFECT FROM 9 AM TO 9 PM CST THURSDAY...

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected.

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

* WHEN...From 9 AM to 9 PM CST Thursday.

* 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.

&&

$$

IAZ007-017-026>028-037>039-049-050-061-062-074-075-084-085-095-096-
181245-
/O.EXT.KDMX.WI.Y.0016.251218T1800Z-251219T0300Z/
Worth-Cerro Gordo-Franklin-Butler-Bremer-Hardin-Grundy-Black Hawk-
Marshall-Tama-Jasper-Poweshiek-Marion-Mahaska-Lucas-Monroe-Wayne-
Appanoose-
Including the cities of Clarksville, Gladbrook, Pella, Toledo,
Allerton, Dike, Waverly, Knoxville, Centerville, Parkersburg,
Corydon, Waterloo, Northwood, Newton, Clear Lake, Tama, Ackley,
Cedar Falls, Iowa Falls, Wellsburg, Marshalltown, Shell Rock,
Dysart, Albia, Traer, Oskaloosa, Seymour, Reinbeck, Hampton,
Grundy Center, Manly, Dumont, Conrad, Humeston, Chariton,
Allison, Eldora, Greene, Aplington, Grinnell, and Mason City
844 PM CST Wed Dec 17 2025

...WIND ADVISORY NOW IN EFFECT FROM NOON TO 9 PM CST THURSDAY...

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected.

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

* WHEN...From noon to 9 PM CST Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects, 
  including holiday 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.

&&

$$

Donavon

102 
WWUS73 KDMX 180912
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
312 AM CST Thu Dec 18 2025

IAZ007-017-026>028-037>039-049-050-061-062-074-075-084>086-095>097-
181915-
/O.EXT.KDMX.WI.Y.0016.251218T1800Z-251219T0600Z/
Worth-Cerro Gordo-Franklin-Butler-Bremer-Hardin-Grundy-Black Hawk-
Marshall-Tama-Jasper-Poweshiek-Marion-Mahaska-Lucas-Monroe-
Wapello-Wayne-Appanoose-Davis-
Including the cities of Waverly, Dysart, Shell Rock, Cedar Falls,
Newton, Grinnell, Northwood, Conrad, Pella, Aplington,
Bloomfield, Manly, Hampton, Gladbrook, Mason City, Chariton,
Albia, Humeston, Grundy Center, Dike, Reinbeck, Tama, Eldora,
Ackley, Corydon, Waterloo, Clarksville, Marshalltown, Oskaloosa,
Toledo, Iowa Falls, Parkersburg, Wellsburg, Clear Lake,
Centerville, Dumont, Allison, Knoxville, Ottumwa, Seymour,
Greene, Allerton, and Traer
312 AM CST Thu Dec 18 2025

...WIND ADVISORY NOW IN EFFECT FROM NOON TODAY TO MIDNIGHT CST 
TONIGHT...

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected.

* WHERE...Much of central into eastern Iowa, generally east of 
  Interstate 35.

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

* IMPACTS...Gusty winds will blow around unsecured objects, 
  including holiday 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.

&&

$$

IAZ004>006-015-016-023>025-033>036-044>048-057>060-070>073-081>083-
092>094-181915-
/O.CON.KDMX.WI.Y.0016.251218T1500Z-251219T0300Z/
Emmet-Kossuth-Winnebago-Palo Alto-Hancock-Pocahontas-Humboldt-
Wright-Sac-Calhoun-Webster-Hamilton-Crawford-Carroll-Greene-Boone-
Story-Audubon-Guthrie-Dallas-Polk-Cass-Adair-Madison-Warren-Adams-
Union-Clarke-Taylor-Ringgold-Decatur-
Including the cities of Lake Mills, Webster City, Estherville,
Adel, Laurens, Britt, Fontanelle, Perry, Gilmore City, Mount Ayr,
Lamoni, Emmetsburg, Pocahontas, Clarion, Jefferson, Algona, Sac
City, Fonda, Carroll, Osceola, Rockwell City, Atlantic, Earlham,
Indianola, Belmond, Winterset, Des Moines, Garner, Panora, Eagle
Grove, Wall Lake, Audubon, Lake View, Leon, Ames, Odebolt, Casey,
Bedford, Pomeroy, Norwalk, Boone, Forest City, Kanawha, Rolfe,
Exira, Bayard, Lake City, Denison, Adair, Waukee, Carlisle,
Creston, Guthrie Center, Stuart, Fort Dodge, Schaller,
Greenfield, New Market, Lenox, Humboldt, Manson, Corning, and
Early
312 AM CST Thu Dec 18 2025

...WIND ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 9 PM 
CST THIS EVENING...

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected.

* WHERE...Much of western into central Iowa, generally along and 
  west of Interstate 35.

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

* IMPACTS...Gusty winds will blow around unsecured objects, 
  including holiday 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.

&&

$$

Dodson

041 
WWUS73 KDMX 181700
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
1100 AM CST Thu Dec 18 2025

IAZ004>006-015-016-023>025-033>036-044>048-057>060-070>073-081>083-
092>094-190300-
/O.CON.KDMX.WI.Y.0016.000000T0000Z-251219T0300Z/
Emmet-Kossuth-Winnebago-Palo Alto-Hancock-Pocahontas-Humboldt-
Wright-Sac-Calhoun-Webster-Hamilton-Crawford-Carroll-Greene-Boone-
Story-Audubon-Guthrie-Dallas-Polk-Cass-Adair-Madison-Warren-Adams-
Union-Clarke-Taylor-Ringgold-Decatur-
Including the cities of Belmond, Bayard, Bedford, Humboldt,
Perry, Kanawha, Gilmore City, Manson, Pomeroy, Fort Dodge,
Denison, Atlantic, Britt, Pocahontas, Stuart, Early, New Market,
Carlisle, Des Moines, Audubon, Wall Lake, Fonda, Adair, Earlham,
Clarion, Lake View, Sac City, Estherville, Eagle Grove, Rockwell
City, Jefferson, Lamoni, Forest City, Waukee, Corning, Adel,
Laurens, Odebolt, Lake City, Osceola, Exira, Panora, Guthrie
Center, Ames, Mount Ayr, Greenfield, Algona, Garner, Webster
City, Winterset, Schaller, Carroll, Lake Mills, Rolfe, Boone,
Indianola, Norwalk, Leon, Casey, Creston, Emmetsburg, Lenox, and
Fontanelle
1100 AM CST Thu Dec 18 2025

...WIND ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS EVENING...

* WHAT...Northwest winds 25 to 30 mph with gusts up to 50 mph.

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

* WHEN...Until 9 PM CST this evening.

* 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.

&&

$$

IAZ007-017-026>028-037>039-049-050-061-062-074-075-084>086-095>097-
190300-
/O.CON.KDMX.WI.Y.0016.251218T1800Z-251219T0600Z/
Worth-Cerro Gordo-Franklin-Butler-Bremer-Hardin-Grundy-Black Hawk-
Marshall-Tama-Jasper-Poweshiek-Marion-Mahaska-Lucas-Monroe-
Wapello-Wayne-Appanoose-Davis-
Including the cities of Seymour, Oskaloosa, Conrad, Waterloo,
Humeston, Dumont, Grinnell, Mason City, Waverly, Knoxville, Shell
Rock, Reinbeck, Clear Lake, Dike, Marshalltown, Eldora,
Aplington, Allerton, Clarksville, Newton, Corydon, Cedar Falls,
Centerville, Ottumwa, Bloomfield, Pella, Hampton, Parkersburg,
Dysart, Gladbrook, Greene, Grundy Center, Wellsburg, Tama, Albia,
Northwood, Ackley, Toledo, Traer, Manly, Allison, Iowa Falls, and
Chariton
1100 AM CST Thu Dec 18 2025

...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT...

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

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

* WHEN...Until midnight CST tonight.

* 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.

&&

$$

Hahn

332 
WWUS73 KDMX 182024
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
224 PM CST Thu Dec 18 2025

IAZ004>006-015-016-023>025-033>036-044>048-057>060-070>073-081>083-
092>094-190300-
/O.CON.KDMX.WI.Y.0016.000000T0000Z-251219T0300Z/
Emmet-Kossuth-Winnebago-Palo Alto-Hancock-Pocahontas-Humboldt-
Wright-Sac-Calhoun-Webster-Hamilton-Crawford-Carroll-Greene-Boone-
Story-Audubon-Guthrie-Dallas-Polk-Cass-Adair-Madison-Warren-Adams-
Union-Clarke-Taylor-Ringgold-Decatur-
Including the cities of Early, Greenfield, Mount Ayr, Humboldt,
Kanawha, Bedford, Fonda, Des Moines, Laurens, Rockwell City,
Schaller, Pomeroy, Adel, Lake Mills, Carlisle, Forest City,
Corning, Audubon, Webster City, Creston, Jefferson, Atlantic,
Guthrie Center, Britt, Winterset, Belmond, Emmetsburg, Lenox,
Lake City, Panora, Stuart, Norwalk, Lake View, Wall Lake, Perry,
Ames, Clarion, Carroll, Denison, Lamoni, Fontanelle, Sac City,
Leon, Estherville, Bayard, Odebolt, Garner, Manson, Adair,
Pocahontas, Boone, New Market, Waukee, Gilmore City, Eagle Grove,
Earlham, Indianola, Fort Dodge, Rolfe, Osceola, Casey, Algona,
and Exira
224 PM CST Thu Dec 18 2025

...WIND ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS EVENING...

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected.

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

* WHEN...Until 9 PM CST this evening.

* IMPACTS...Gusty winds will blow around unsecured objects, 
  including holiday 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.

&&

$$

IAZ007-017-026>028-037>039-049-050-061-062-074-075-084>086-095>097-
190600-
/O.CON.KDMX.WI.Y.0016.000000T0000Z-251219T0600Z/
Worth-Cerro Gordo-Franklin-Butler-Bremer-Hardin-Grundy-Black Hawk-
Marshall-Tama-Jasper-Poweshiek-Marion-Mahaska-Lucas-Monroe-
Wapello-Wayne-Appanoose-Davis-
Including the cities of Humeston, Dysart, Waterloo, Conrad,
Parkersburg, Corydon, Eldora, Clarksville, Centerville, Chariton,
Bloomfield, Reinbeck, Traer, Marshalltown, Aplington, Ackley,
Knoxville, Albia, Allerton, Waverly, Dumont, Clear Lake, Manly,
Pella, Oskaloosa, Hampton, Shell Rock, Seymour, Northwood, Cedar
Falls, Ottumwa, Grundy Center, Greene, Mason City, Dike,
Grinnell, Wellsburg, Tama, Toledo, Allison, Newton, Iowa Falls,
and Gladbrook
224 PM CST Thu Dec 18 2025

...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT...

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected.

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

* WHEN...Until midnight CST tonight.

* IMPACTS...Gusty winds will blow around unsecured objects, 
  including holiday 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.

&&

$$

Hagenhoff

804 
WWUS73 KDMX 190250
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
850 PM CST Thu Dec 18 2025

IAZ004>006-015-016-023>025-033>036-044>048-057>060-070>073-081>083-
092>094-190400-
/O.EXP.KDMX.WI.Y.0016.000000T0000Z-251219T0300Z/
Emmet-Kossuth-Winnebago-Palo Alto-Hancock-Pocahontas-Humboldt-
Wright-Sac-Calhoun-Webster-Hamilton-Crawford-Carroll-Greene-Boone-
Story-Audubon-Guthrie-Dallas-Polk-Cass-Adair-Madison-Warren-Adams-
Union-Clarke-Taylor-Ringgold-Decatur-
Including the cities of Sac City, Eagle Grove, Belmond, Audubon,
Osceola, Carlisle, Indianola, Lamoni, Rolfe, Humboldt, Lake
Mills, Bayard, Adair, Laurens, Rockwell City, Early, Fort Dodge,
Lenox, Pomeroy, Pocahontas, Greenfield, Exira, Des Moines,
Atlantic, Denison, Gilmore City, Webster City, Jefferson, Ames,
Panora, Earlham, Carroll, Corning, Guthrie Center, Creston, Mount
Ayr, Perry, Stuart, Adel, Clarion, Fonda, Manson, Casey, Lake
View, Garner, Algona, Bedford, Britt, Boone, Fontanelle, Forest
City, Odebolt, Wall Lake, New Market, Leon, Estherville,
Schaller, Waukee, Norwalk, Kanawha, Emmetsburg, Lake City, and
Winterset
850 PM CST Thu Dec 18 2025

...WIND ADVISORY WILL EXPIRE AT 9 PM CST THIS EVENING...

Winds are gradually diminishing. Gusts over 40 mph are possible over 
the next several hours.

$$

IAZ007-017-026>028-037>039-049-050-061-062-074-075-084>086-095>097-
190600-
/O.CON.KDMX.WI.Y.0016.000000T0000Z-251219T0600Z/
Worth-Cerro Gordo-Franklin-Butler-Bremer-Hardin-Grundy-Black Hawk-
Marshall-Tama-Jasper-Poweshiek-Marion-Mahaska-Lucas-Monroe-
Wapello-Wayne-Appanoose-Davis-
Including the cities of Ackley, Chariton, Newton, Clear Lake,
Dumont, Bloomfield, Corydon, Allerton, Humeston, Clarksville,
Shell Rock, Marshalltown, Grundy Center, Traer, Hampton,
Waterloo, Seymour, Aplington, Waverly, Manly, Eldora, Ottumwa,
Toledo, Conrad, Gladbrook, Dysart, Reinbeck, Oskaloosa,
Parkersburg, Iowa Falls, Tama, Grinnell, Centerville, Albia,
Knoxville, Mason City, Northwood, Pella, Cedar Falls, Dike,
Greene, Wellsburg, and Allison
850 PM CST Thu Dec 18 2025

...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST TONIGHT...

* WHAT...West winds 25 to 35 mph with gusts up to 50 mph expected.

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

* WHEN...Until midnight CST tonight.

* IMPACTS...Gusty winds will blow around unsecured objects, 
  including holiday 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.

&&

$$

Donavon

505 
WWUS73 KDMX 190556
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
1156 PM CST Thu Dec 18 2025

IAZ007-017-026>028-037>039-049-050-061-062-074-075-084>086-095>097-
190700-
/O.EXP.KDMX.WI.Y.0016.000000T0000Z-251219T0600Z/
Worth-Cerro Gordo-Franklin-Butler-Bremer-Hardin-Grundy-Black Hawk-
Marshall-Tama-Jasper-Poweshiek-Marion-Mahaska-Lucas-Monroe-
Wapello-Wayne-Appanoose-Davis-
Including the cities of Waverly, Parkersburg, Mason City, Conrad,
Clear Lake, Centerville, Gladbrook, Tama, Dike, Clarksville,
Dysart, Greene, Marshalltown, Allerton, Toledo, Iowa Falls,
Ackley, Corydon, Grinnell, Grundy Center, Cedar Falls, Humeston,
Allison, Reinbeck, Oskaloosa, Manly, Knoxville, Aplington,
Northwood, Ottumwa, Wellsburg, Waterloo, Pella, Seymour,
Bloomfield, Newton, Hampton, Dumont, Shell Rock, Albia, Chariton,
Eldora, and Traer
1156 PM CST Thu Dec 18 2025

...WIND ADVISORY WILL EXPIRE AT MIDNIGHT CST TONIGHT...

Wind speeds are diminishing and the advisory will be allowed to 
expire. Wind gusts to around 40 mph will be possible over the next 
few hours.

$$

Ansorge

Area Forecast Discussion
National Weather Service Des Moines IA
1033 PM CST Tue Dec 16 2025

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

.KEY MESSAGES...

- Snow melt continues with mild temperatures once again
  Wednesday, especially in the southwestern half of Iowa. Fog
  will be possible early Wednesday morning.

- Light rain will move through late Wednesday night/early
  Thursday morning, followed by a brief dry period later
  Thursday morning.

- Around Thursday afternoon a sharp cold front will push
  through, bringing strong and gusty winds, falling
  temperatures, and scattered snow showers. Travel impacts will
  be possible.

&&

.DISCUSSION...
Issued at 221 PM CST Tue Dec 16 2025

Modest southwesterly surface flow has helped temperatures rise
significantly today, remaining in the mid-30s in our
northeastern counties but soaring well into the 40s in central
and southwestern Iowa as the edge of the snow pack is steadily
eroded away. This renews the possibility of fog development
later tonight into Wednesday morning. However, fog was more
limited than anticipated last night/this morning, and tonight
there will initially be thicker cirrus clouds this evening,
after which winds will become northwesterly and promote
advection of lower dewpoints over the snow cover. Around and
after sunrise Wednesday a weak surface ridge will ooze across
Iowa and winds may go calm for a few hours so there is a brief
window of opportunity for some fog then, and have added patchy
wording to the forecast. Also worth noting is that after sunset
tonight, temperatures will once again fall well below freezing
in areas where snow is melting today, so there could be some
localized re-freezing especially on bridges and elevated
surfaces.

On Wednesday the aforementioned surface ridge will move away
and south southeasterly flow will quickly return and strengthen
by the afternoon. This will promote mild temperatures once
again, with highs similar to today, with additional melting of
the snow pack. It is likely that in areas of currently shallower
snow cover it will entirely melt by the end of the day
Wednesday, while in areas of deeper cover some of it will remain
in place at that time. However, as south breezes persist
Wednesday evening/early Wednesday night they will continue to
pump higher dewpoints into the area and prevent temperatures
from falling below freezing, so the snow melt will continue even
after dark and despite the gusty winds, some light fog may
develop as a result. Meanwhile, a 500 MB trough/low near the
eastern Montana/Canada border Wednesday evening will deepen and
move quickly southeastward Wednesday night, centering somewhere
near western/southwestern Minnesota by sunrise Thursday. As
this system approaches Iowa, two surface troughs will develop
around its southern periphery. The first will move through our
forecast area late Wednesday night, mainly between midnight and
sunrise Thursday, and will be accompanied by a swath of light
precipitation resulting from a combination of warm air/moisture
advection, low-level convergence, and broad lift associated with
the leading flank of the mid/upper level low. Forecast soundings
support light rain as the dominant precipitation type during
this time, and this will further aid in the ongoing snow melt.
All in all Wednesday night into early Thursday morning will be
damp and dreary.

The primary potential for hazardous weather in the next seven days
is focused on Thursday. Behind the leading trough and swath of light
rain, a dry slot will cross our area around mid/late morning
Thursday. During the afternoon and evening, the core of the 500
MB low will then sink into northern Iowa and push through a
stronger surface cold front. Currently, the expectation is that
this front will enter our northwestern counties around
Estherville and Emmetsburg a little before noon Thursday, and
reach our southeastern counties around Oskaloosa and Ottumwa by
the late afternoon. Strong low-level cold air advection will
surge in behind this front, with forecast soundings showing the
rapid development of steep low-level lapse rates and meager
instability, along with turbulent mixing and resultant gusty
winds. Although deep-layer forcing for ascent is weaker by this
time, the low-level frontogenetical forcing and weak instability
will support the development of snow showers. A relatively deep
saturated layer within the dendritic zone indicates the
potential for brief periods of intensely falling snow, even if
the resulting accumulation is very light. Nearly all model
output indicates light QPF/radar returns, and several including
the NAM are depicting 25-50 J/KG of surface-based CAPE during
this time. Combined with the expectation of strong and gusty
winds, concerns are gradually increasing for travel impacts
around Thursday afternoon/evening due to a combination of
reduced visibility in falling/blowing snow, strengthening
crosswinds, and potentially a flash freeze on some roads as
temperatures fall rapidly. It remains to be seen whether the
ingredients will come together sufficiently for such hazards to
manifest themselves, but the potential is certainly there.

Thursday night into Friday morning will be cooler once again
behind the front, however this will be short-lived. By Friday
afternoon weak ridging will move overhead and surface winds will
come around to south southwest again. Thereafter, a relatively
dry and quiet synoptic pattern will set in with very low
precipitation chances and alternating days of mild to near
normal temperatures.

&&

.AVIATION /06Z TAFS THROUGH 06Z THURSDAY/...
Issued at 1033 PM CST Tue Dec 16 2025

Trend this cycle has been to focus fog at FOD with IFR
restrictions and remove the fog at the other terminals where VFR
conditions are forecast to now prevail. It's possible the FOD
restrictions may need to be dropped into LIFR, but with most of
it occurring after 12z will allow a final look at that issuance
time. Otherwise, focus will be on Wednesday evening as winds
increase ahead of a front. Precipitation will arrive close to or
more likely after 6z so did not mention any this cycle.
Finally, a period of low level wind shear may develop toward and
after sunset, but with it being around 30 knots/marginal over
the north and less than 30 knots over the south have opted to
not include at in the last quarter of the period.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
None.

&&

DISCUSSION...Lee
AVIATION...Ansorge

Hazardous Weather Outlook
National Weather Service Des Moines IA
231 PM CST Tue Dec 16 2025

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-171500-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper-
Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-
Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-
Appanoose-Davis-
231 PM CST Tue Dec 16 2025

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...This afternoon and tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Patchy fog may develop early Wednesday morning.

Strong and gusty winds are expected Thursday afternoon and
evening, along with falling temperatures. Scattered light snow
showers are also forecast. There may be some travel impacts due to
slick roads.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.