Extreme Cold Warning 2, NWS Des Moines, IA

Adair County, IA, Adams 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, Crawford County, IA, Dallas 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, Madison County, IA, Marshall County, IA, Palo Alto County, IA, Pocahontas County, IA, Polk County, IA, Poweshiek County, IA, Sac County, IA, Story County, IA, Tama County, IA, Union County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA

774 
WWUS73 KDMX 171601
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
1001 AM CST Mon Feb 17 2025

IAZ004>007-015>017-180215-
/O.EXT.KDMX.CW.Y.0006.000000T0000Z-250218T0300Z/
/O.CON.KDMX.EC.W.0002.250218T0300Z-250218T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Including the cities of Lake Mills, Forest City, Clear Lake,
Garner, Emmetsburg, Mason City, Britt, Kanawha, Manly,
Estherville, Algona, and Northwood
1001 AM CST Mon Feb 17 2025

...COLD WEATHER ADVISORY NOW IN EFFECT UNTIL 9 PM CST THIS EVENING...
...EXTREME COLD WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 
NOON CST TUESDAY...

* WHAT...For the Cold Weather Advisory, very cold wind chills of 25 
  below to 35 below. For the Extreme Cold Warning, dangerously cold 
  wind chills as low as 35 below to 45 below.

* WHERE...Cerro Gordo, Hancock, Kossuth, Winnebago, Worth, Emmet, 
  and Palo Alto Counties.

* WHEN...For the first Cold Weather Advisory and second Cold Weather 
  Advisory, until 9 PM CST this evening. For the Extreme Cold 
  Warning, from 9 PM this evening to noon CST Tuesday.

* IMPACTS...The dangerously cold wind chills as low as 45 below zero 
  could cause frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Dress in layers including a hat, face mask, and gloves if you must 
go outside.

Use caution while traveling outside. Wear appropriate clothing, a 
hat, and gloves.

&&

$$

IAZ023>028-035>039-050-180215-
/O.CON.KDMX.EC.W.0002.250218T0300Z-250218T1800Z/
/O.CON.KDMX.CW.Y.0006.000000T0000Z-250217T1800Z/
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Webster-
Hamilton-Hardin-Grundy-Black Hawk-Tama-
Including the cities of Ackley, Toledo, Parkersburg, Shell Rock,
Tama, Traer, Conrad, Eagle Grove, Iowa Falls, Allison, Grundy
Center, Reinbeck, Hampton, Clarion, Humboldt, Greene, Fonda,
Dumont, Waterloo, Gladbrook, Waverly, Clarksville, Fort Dodge,
Laurens, Cedar Falls, Eldora, Aplington, Wellsburg, Dysart,
Gilmore City, Belmond, Webster City, Dike, Pocahontas, and Rolfe
1001 AM CST Mon Feb 17 2025

...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY...
...EXTREME COLD WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 
NOON CST TUESDAY...

* WHAT...For the Cold Weather Advisory, very cold wind chills as low 
  as 20 below to 30 below. For the Extreme Cold Warning, dangerously 
  cold wind chills as low as 30 below to 40 below expected.

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

* WHEN...For the Cold Weather Advisory, until noon CST today. For 
  the Extreme Cold Warning, from 9 PM this evening to noon CST 
  Tuesday.

* IMPACTS...The dangerously cold wind chills as low as 40 below zero 
  could cause frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Dress in layers including a hat, face mask, and gloves if you must 
go outside.

Use caution while traveling outside. Wear appropriate clothing, a 
hat, and gloves.

&&

$$

IAZ033-034-044>049-057>062-180215-
/O.CON.KDMX.EC.W.0002.250218T0300Z-250218T1800Z/
Sac-Calhoun-Crawford-Carroll-Greene-Boone-Story-Marshall-Audubon-
Guthrie-Dallas-Polk-Jasper-Poweshiek-
Including the cities of Ames, Bayard, Casey, Grinnell, Lake City,
Schaller, Wall Lake, Lake View, Boone, Denison, Odebolt, Rockwell
City, Newton, Perry, Adel, Panora, Carroll, Audubon, Early, Des
Moines, Manson, Marshalltown, Exira, Waukee, Sac City, Pomeroy,
Guthrie Center, and Jefferson
1001 AM CST Mon Feb 17 2025

...EXTREME COLD WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 
NOON CST TUESDAY...

* WHAT...Dangerously cold wind chills as low 25 below to 35 below 
  expected.

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

* WHEN...From 9 PM this evening to noon CST Tuesday.

* IMPACTS...The dangerously cold wind chills as low as 35 below zero 
  could cause frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Dress in layers including a hat, face mask, and gloves if you must 
go outside.

&&

$$

IAZ070>075-081>086-092>097-180215-
/O.CON.KDMX.CW.Y.0007.250218T0300Z-250218T1800Z/
Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union-Clarke-Lucas-
Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne-Appanoose-Davis-
Including the cities of Corning, Allerton, Bedford, Greenfield,
Fontanelle, Lamoni, Atlantic, Mount Ayr, Seymour, Knoxville,
Pella, Indianola, New Market, Corydon, Stuart, Carlisle, Lenox,
Albia, Humeston, Ottumwa, Creston, Chariton, Leon, Oskaloosa,
Osceola, Centerville, Winterset, Adair, Norwalk, Earlham, and
Bloomfield
1001 AM CST Mon Feb 17 2025

...COLD WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 
NOON CST TUESDAY...

* WHAT...Very cold wind chills as low as 20 below to 30 below 
  expected.

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

* WHEN...From 9 PM this evening to noon CST Tuesday.

* IMPACTS...The dangerously cold wind chills as low as 30 below zero 
  could cause frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a 
hat, and gloves.

&&

$$

Dodson

330 
WWUS73 KDMX 171954
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
154 PM CST Mon Feb 17 2025

IAZ070>072-081-082-180600-
/O.UPG.KDMX.CW.Y.0007.250218T0300Z-250218T1800Z/
/O.EXA.KDMX.EC.W.0002.250218T0300Z-250218T1800Z/
Cass-Adair-Madison-Adams-Union-
Including the cities of Fontanelle, Stuart, Winterset, Earlham,
Creston, Atlantic, Greenfield, Corning, and Adair
154 PM CST Mon Feb 17 2025

...EXTREME COLD WARNING IN EFFECT FROM 9 PM THIS EVENING TO NOON CST 
TUESDAY...

* WHAT...Dangerously cold wind chills as low as 30 to 33 below 
  expected.

* WHERE...Madison, Union, Adair, Adams, and Cass Counties.

* WHEN...From 9 PM this evening to noon CST Tuesday.

* IMPACTS...The dangerously cold wind chills as low as 30 below zero 
  could cause frostbite on exposed skin in as little as 10 minutes.

* ADDITIONAL DETAILS...Additional cold weather headlines are likely 
  this week beyond Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Dress in layers including a hat, face mask, and gloves if you must 
go outside.

&&

$$

IAZ004>007-015>017-180600-
/O.CON.KDMX.EC.W.0002.250218T0300Z-250218T1800Z/
/O.CON.KDMX.CW.Y.0006.000000T0000Z-250218T0300Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Including the cities of Garner, Algona, Mason City, Estherville,
Manly, Britt, Kanawha, Clear Lake, Emmetsburg, Lake Mills,
Northwood, and Forest City
154 PM CST Mon Feb 17 2025

...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS 
EVENING...
...EXTREME COLD WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 
NOON CST TUESDAY...

* WHAT...For the Cold Weather Advisory, very cold wind chills as low 
  as 31 below. For the Extreme Cold Warning, dangerously cold wind 
  chills as low as 41 below expected.

* WHERE...Cerro Gordo, Hancock, Kossuth, Winnebago, Worth, Emmet, 
  and Palo Alto Counties.

* WHEN...For the Cold Weather Advisory, until 9 PM CST this evening. 
  For the Extreme Cold Warning, from 9 PM this evening to noon CST 
  Tuesday.

* IMPACTS...The dangerously cold wind chills as low as 40 below zero 
  could cause frostbite on exposed skin in as little as 10 minutes.

* ADDITIONAL DETAILS...Additional cold weather headlines are likely 
  this week beyond Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Dress in layers including a hat, face mask, and gloves if you must 
go outside.

Use caution while traveling outside. Wear appropriate clothing, a 
hat, and gloves.

&&

$$

IAZ023>028-033>039-044>050-057>062-180600-
/O.CON.KDMX.EC.W.0002.250218T0300Z-250218T1800Z/
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-
Including the cities of Conrad, Gladbrook, Aplington, Sac City,
Reinbeck, Perry, Boone, Fort Dodge, Gilmore City, Cedar Falls,
Guthrie Center, Dumont, Dysart, Hampton, Greene, Casey, Des
Moines, Schaller, Pocahontas, Bayard, Waterloo, Newton, Grinnell,
Jefferson, Humboldt, Parkersburg, Ames, Early, Denison, Audubon,
Eldora, Exira, Adel, Clarksville, Wall Lake, Grundy Center,
Clarion, Eagle Grove, Waverly, Dike, Carroll, Wellsburg, Pomeroy,
Toledo, Waukee, Rolfe, Odebolt, Iowa Falls, Marshalltown, Fonda,
Ackley, Traer, Belmond, Shell Rock, Laurens, Webster City,
Rockwell City, Tama, Lake City, Lake View, Allison, Panora, and
Manson
154 PM CST Mon Feb 17 2025

...EXTREME COLD WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 
NOON CST TUESDAY...

* WHAT...Dangerously cold wind chills as low as 30 to 37 below 
  expected.

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

* WHEN...From 9 PM this evening to noon CST Tuesday.

* IMPACTS...The dangerously cold wind chills as low as 35 below zero 
  could cause frostbite on exposed skin in as little as 10 minutes.

* ADDITIONAL DETAILS...Additional cold weather headlines are likely 
  this week beyond Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Dress in layers including a hat, face mask, and gloves if you must 
go outside.

&&

$$

IAZ073>075-083>086-092>097-180600-
/O.CON.KDMX.CW.Y.0007.250218T0300Z-250218T1800Z/
Warren-Marion-Mahaska-Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-
Decatur-Wayne-Appanoose-Davis-
Including the cities of Bedford, Albia, Lenox, Indianola,
Norwalk, Mount Ayr, Corydon, Centerville, Humeston, Pella,
Oskaloosa, Leon, Bloomfield, Knoxville, Ottumwa, Carlisle,
Chariton, Lamoni, Osceola, New Market, Seymour, and Allerton
154 PM CST Mon Feb 17 2025

...COLD WEATHER ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 
NOON CST TUESDAY...

* WHAT...Very cold wind chills as low as 29 below expected.

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

* WHEN...From 9 PM this evening to noon CST Tuesday.

* IMPACTS...The dangerously cold wind chills as low as 25 below zero 
  could cause frostbite on exposed skin in as little as 30 minutes.

* ADDITIONAL DETAILS...Additional cold weather headlines are likely 
  this week beyond Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a 
hat, and gloves.

&&

$$

Cogil

677 
WWUS73 KDMX 180258
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
858 PM CST Mon Feb 17 2025

IAZ004>007-015>017-181300-
/O.EXP.KDMX.CW.Y.0006.000000T0000Z-250218T0300Z/
/O.CON.KDMX.EC.W.0002.250218T0300Z-250218T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Including the cities of Algona, Lake Mills, Garner, Kanawha,
Northwood, Britt, Mason City, Manly, Clear Lake, Emmetsburg,
Estherville, and Forest City
858 PM CST Mon Feb 17 2025

...EXTREME COLD WARNING REMAINS IN EFFECT UNTIL NOON CST TUESDAY...
...COLD WEATHER ADVISORY WILL EXPIRE AT 9 PM CST THIS EVENING...

* WHAT...Dangerously cold wind chills as low as 41 below zero 
  expected.

* WHERE...Cerro Gordo, Hancock, Kossuth, Winnebago, Worth, Emmet, 
  and Palo Alto Counties.

* WHEN...Until noon CST Tuesday.

* IMPACTS...The dangerously cold wind chills as low as 41 below zero 
  could cause frostbite on exposed skin in as little as 10 minutes.

* ADDITIONAL DETAILS...Additional cold weather headlines are likely 
  this week beyond Tuesday midday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Dress in appropriate layers including a hat, face mask, and gloves 
if you must go outside. Use caution while traveling.

&&

$$

IAZ023>028-033>039-044>050-057>062-070>072-081-082-181300-
/O.CON.KDMX.EC.W.0002.250218T0300Z-250218T1800Z/
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-Adams-Union-
Including the cities of Tama, Winterset, Schaller, Waverly,
Manson, Pomeroy, Jefferson, Clarion, Atlantic, Des Moines,
Marshalltown, Greene, Greenfield, Shell Rock, Casey, Fontanelle,
Parkersburg, Hampton, Rolfe, Wall Lake, Carroll, Adel, Boone,
Denison, Grinnell, Panora, Cedar Falls, Rockwell City, Guthrie
Center, Ames, Pocahontas, Adair, Gladbrook, Perry, Corning, Lake
View, Bayard, Allison, Dike, Humboldt, Lake City, Webster City,
Grundy Center, Iowa Falls, Dumont, Waterloo, Eldora, Traer,
Audubon, Ackley, Creston, Aplington, Early, Laurens, Waukee,
Conrad, Sac City, Dysart, Earlham, Fonda, Exira, Wellsburg,
Stuart, Fort Dodge, Reinbeck, Eagle Grove, Toledo, Odebolt,
Belmond, Newton, Gilmore City, and Clarksville
858 PM CST Mon Feb 17 2025

...EXTREME COLD WARNING REMAINS IN EFFECT UNTIL NOON CST TUESDAY...

* WHAT...Dangerously cold wind chills as low as 36 below zero 
  expected.

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

* WHEN...Until noon CST Tuesday.

* IMPACTS...The dangerously cold wind chills as low as 36 below zero 
  could cause frostbite on exposed skin in as little as 10 minutes.

* ADDITIONAL DETAILS...Additional cold weather headlines are likely 
  this week beyond Tuesday midday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Dress in appropriate layers including a hat, face mask, and gloves 
if you must go outside. Use caution while traveling.

&&

$$

IAZ073>075-083>086-092>097-181300-
/O.CON.KDMX.CW.Y.0007.250218T0300Z-250218T1800Z/
Warren-Marion-Mahaska-Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-
Decatur-Wayne-Appanoose-Davis-
Including the cities of Corydon, Albia, Humeston, Pella, Mount
Ayr, Chariton, Centerville, Allerton, New Market, Oskaloosa,
Lenox, Knoxville, Leon, Indianola, Norwalk, Carlisle, Ottumwa,
Lamoni, Osceola, Bloomfield, Seymour, and Bedford
858 PM CST Mon Feb 17 2025

...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST TUESDAY...

* WHAT...Very cold wind chills as low as 30 below zero expected.

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

* WHEN...Until noon CST Tuesday.

* IMPACTS...The dangerously cold wind chills as low as 30 below zero 
  could cause frostbite on exposed skin in as little as 30 minutes.

* ADDITIONAL DETAILS...Additional cold weather headlines are likely 
  this week beyond Tuesday midday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a 
hat, and gloves.

&&

$$

588 
WWUS73 KDMX 180924
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
324 AM CST Tue Feb 18 2025

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>072-081-082-
181930-
/O.NEW.KDMX.CW.Y.0008.250219T0000Z-250219T1800Z/
/O.CON.KDMX.EC.W.0002.000000T0000Z-250218T1800Z/
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-Adams-Union-
Including the cities of Webster City, Denison, Newton, Wellsburg,
Shell Rock, Manson, Parkersburg, Bayard, Forest City, Algona,
Rockwell City, Clarion, Manly, Pomeroy, Greenfield, Ackley,
Conrad, Waverly, Kanawha, Waterloo, Britt, Boone, Jefferson,
Dysart, Clear Lake, Fonda, Fontanelle, Pocahontas, Guthrie
Center, Humboldt, Laurens, Panora, Cedar Falls, Stuart, Eldora,
Earlham, Dumont, Ames, Carroll, Tama, Lake City, Aplington,
Greene, Marshalltown, Schaller, Corning, Rolfe, Des Moines,
Grundy Center, Reinbeck, Adair, Clarksville, Belmond, Atlantic,
Fort Dodge, Emmetsburg, Mason City, Iowa Falls, Casey, Hampton,
Odebolt, Gladbrook, Exira, Grinnell, Traer, Gilmore City,
Audubon, Waukee, Lake View, Dike, Creston, Sac City, Wall Lake,
Early, Lake Mills, Winterset, Estherville, Toledo, Northwood,
Perry, Allison, Garner, Adel, and Eagle Grove
324 AM CST Tue Feb 18 2025

...EXTREME COLD WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...
...COLD WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO NOON 
CST WEDNESDAY...

* WHAT...For the Extreme Cold Warning, dangerously cold wind chills 
  30 to 40 below zero. For the Cold Weather Advisory, very cold wind 
  chills as low as 32 below expected.

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

* WHEN...For the Extreme Cold Warning, until noon CST today. For the 
  Cold Weather Advisory, from 6 PM this evening to noon CST 
  Wednesday.

* IMPACTS...The dangerously cold wind chills as low as 40 below zero 
  could cause frostbite on exposed skin in as little as 10 minutes. 
  Frostbite and hypothermia will occur if unprotected skin is 
  exposed to these temperatures.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Dress in layers including a hat, face mask, and gloves if you must 
go outside. Keep pets indoors as much as possible. Make sure outdoor 
animals have a warm, dry shelter, food, and unfrozen water. Make 
frequent checks on older family, friends, and neighbors. Ensure 
portable heaters are used correctly. Do not use generators or grills 
inside.

Use caution while traveling outside. Wear appropriate clothing, a 
hat, and gloves.

&&

$$

IAZ073>075-083>086-092>097-181930-
/O.NEW.KDMX.CW.Y.0008.250219T0000Z-250219T1800Z/
/O.CON.KDMX.CW.Y.0007.000000T0000Z-250218T1800Z/
Warren-Marion-Mahaska-Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-
Decatur-Wayne-Appanoose-Davis-
Including the cities of Bloomfield, Norwalk, Mount Ayr, Allerton,
Bedford, Knoxville, Pella, Carlisle, Lamoni, Corydon, Albia,
Leon, Indianola, Chariton, Lenox, Osceola, Ottumwa, Humeston, New
Market, Oskaloosa, Seymour, and Centerville
324 AM CST Tue Feb 18 2025

...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY...
...COLD WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO NOON 
CST WEDNESDAY...

* WHAT...For the first Cold Weather Advisory, very cold wind chills 
  as low as 31 below. For the second Cold Weather Advisory, very 
  cold wind chills as low as 24 below expected.

* WHERE...Portions of southern Iowa.

* WHEN...For the first Cold Weather Advisory, until noon CST today. 
  For the second Cold Weather Advisory, from 6 PM this evening to 
  noon CST Wednesday.

* IMPACTS...The dangerously cold wind chills as low as 30 below zero 
  could cause frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a 
hat, and gloves.

&&

$$

Small

523 
WWUS73 KDMX 181329
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
729 AM CST Tue Feb 18 2025

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>072-081-082-
182330-
/O.CON.KDMX.EC.W.0002.000000T0000Z-250218T1800Z/
/O.CON.KDMX.CW.Y.0008.250219T0000Z-250219T1800Z/
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-Adams-Union-
Including the cities of Iowa Falls, Newton, Grundy Center,
Greene, Perry, Adair, Gladbrook, Carroll, Des Moines, Allison,
Corning, Bayard, Wellsburg, Mason City, Fonda, Waverly, Manly,
Panora, Schaller, Belmond, Gilmore City, Lake Mills, Eagle Grove,
Conrad, Laurens, Ames, Stuart, Audubon, Dumont, Pomeroy, Wall
Lake, Winterset, Dike, Marshalltown, Atlantic, Hampton, Dysart,
Fontanelle, Waukee, Clarksville, Casey, Clarion, Greenfield,
Humboldt, Rolfe, Reinbeck, Early, Odebolt, Fort Dodge,
Parkersburg, Northwood, Traer, Clear Lake, Kanawha, Toledo,
Waterloo, Webster City, Adel, Denison, Sac City, Tama, Eldora,
Boone, Algona, Grinnell, Pocahontas, Estherville, Lake View,
Forest City, Cedar Falls, Jefferson, Britt, Garner, Emmetsburg,
Earlham, Creston, Guthrie Center, Shell Rock, Rockwell City,
Aplington, Exira, Ackley, Manson, and Lake City
729 AM CST Tue Feb 18 2025

...EXTREME COLD WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...
...COLD WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 
NOON CST WEDNESDAY...

* WHAT...For the Extreme Cold Warning, dangerously cold wind chills 
  30 to 40 below zero. For the Cold Weather Advisory, very cold wind 
  chills as low as 30 below expected.

* WHERE...For the Extreme Cold Warning this morning, much of 
  western, central, and northern Iowa. For the cold Weather Advisory 
  tonight, all of Iowa.

* WHEN...For the Extreme Cold Warning, until noon CST today. For the 
  Cold Weather Advisory, from 6 PM this evening to noon CST 
  Wednesday.

* IMPACTS...The dangerously cold wind chills as low as 40 below zero 
  could cause frostbite on exposed skin in as little as 10 minutes. 
  Frostbite and hypothermia will occur if unprotected skin is 
  exposed to these temperatures.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Dress in layers including a hat, face mask, and gloves if you must 
go outside.

Keep pets indoors as much as possible.

Make sure outdoor animals have a warm, dry shelter, food, and 
unfrozen water.

Make frequent checks on older family, friends, and neighbors. Ensure 
portable heaters are used correctly. Do not use generators or grills 
inside.

Use caution while traveling outside. Wear appropriate clothing, a 
hat, and gloves.

&&

$$

IAZ073>075-083>086-092>097-182330-
/O.CON.KDMX.CW.Y.0007.000000T0000Z-250218T1800Z/
/O.CON.KDMX.CW.Y.0008.250219T0000Z-250219T1800Z/
Warren-Marion-Mahaska-Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-
Decatur-Wayne-Appanoose-Davis-
Including the cities of Chariton, Norwalk, Humeston, Allerton,
Lenox, Bedford, Lamoni, Carlisle, Seymour, Corydon, Osceola,
Knoxville, Ottumwa, New Market, Leon, Pella, Bloomfield,
Centerville, Albia, Indianola, Oskaloosa, and Mount Ayr
729 AM CST Tue Feb 18 2025

...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY...
...COLD WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 
NOON CST WEDNESDAY...

* WHAT...Very cold wind chills as low as 30 below zero expected.

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

* WHEN...For the first Cold Weather Advisory, until noon CST today. 
  For the second Cold Weather Advisory, from 6 PM this evening to 
  noon CST Wednesday.

* IMPACTS...The dangerously cold wind chills as low as 30 below zero 
  could cause frostbite on exposed skin in less than 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a 
hat, and gloves.

&&

$$

Lee

880 
WWUS73 KDMX 181745
NPWDMX

URGENT - WEATHER MESSAGE
National Weather Service Des Moines IA
1145 AM CST Tue Feb 18 2025

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>072-081-082-
190345-
/O.EXP.KDMX.EC.W.0002.000000T0000Z-250218T1800Z/
/O.CON.KDMX.CW.Y.0008.250219T0000Z-250219T1800Z/
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-Adams-Union-
Including the cities of Humboldt, Stuart, Waukee, Greenfield, Des
Moines, Garner, Conrad, Aplington, Creston, Manson, Denison,
Manly, Perry, Wall Lake, Early, Grundy Center, Tama, Iowa Falls,
Dysart, Waverly, Guthrie Center, Jefferson, Fontanelle, Casey,
Marshalltown, Greene, Carroll, Lake City, Parkersburg, Odebolt,
Bayard, Clear Lake, Pomeroy, Schaller, Corning, Atlantic,
Waterloo, Eagle Grove, Newton, Laurens, Fonda, Clarksville,
Hampton, Dike, Forest City, Emmetsburg, Panora, Earlham,
Grinnell, Fort Dodge, Gilmore City, Kanawha, Ames, Sac City,
Shell Rock, Audubon, Gladbrook, Pocahontas, Ackley, Exira, Boone,
Rolfe, Britt, Lake Mills, Algona, Rockwell City, Wellsburg, Mason
City, Dumont, Winterset, Adair, Toledo, Traer, Cedar Falls,
Belmond, Allison, Webster City, Reinbeck, Eldora, Adel,
Northwood, Clarion, Lake View, and Estherville
1145 AM CST Tue Feb 18 2025

...EXTREME COLD WARNING WILL EXPIRE AT NOON CST TODAY...
...COLD WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 
NOON CST WEDNESDAY...

* WHAT...Very cold wind chills as low as 20 to 30 below zero 
  expected again this evening through noon Wednesday.

* WHERE...Across all of Iowa.

* WHEN...From 6 PM this evening to noon CST Wednesday.

* IMPACTS...The dangerously cold wind chills as low as 30 below zero 
  could cause frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a 
hat, and gloves.

&&

$$

IAZ073>075-083>086-092>097-190345-
/O.EXP.KDMX.CW.Y.0007.000000T0000Z-250218T1800Z/
/O.CON.KDMX.CW.Y.0008.250219T0000Z-250219T1800Z/
Warren-Marion-Mahaska-Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-
Decatur-Wayne-Appanoose-Davis-
Including the cities of Pella, Carlisle, Mount Ayr, Lamoni,
Albia, Osceola, Indianola, Leon, Bloomfield, Oskaloosa, Norwalk,
Ottumwa, Humeston, Knoxville, Corydon, Bedford, Lenox, Seymour,
Centerville, Chariton, Allerton, and New Market
1145 AM CST Tue Feb 18 2025

...CURRENT COLD WEATHER ADVISORY WILL EXPIRE AT NOON CST TODAY...
...NEXT COLD WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS 
EVENING TO NOON CST WEDNESDAY...


* WHAT...Very cold wind chills as low as 20 to 30 below zero 
  expected.

* WHERE...Across all of Iowa.

* WHEN...From 6 PM this evening to noon CST Wednesday.

* IMPACTS...The dangerously cold wind chills as low as 30 below zero 
  could cause frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use caution while traveling outside. Wear appropriate clothing, a 
hat, and gloves.

&&

$$

Fowle

Area Forecast Discussion
National Weather Service Des Moines IA
1127 PM CST Sun Feb 16 2025

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

.KEY MESSAGES...

- Accumulating snowfall southwest and south late tonight through
  Monday. Amounts of 2-3" likely in our southwestern counties
  around Bedford and Mount Ayr. Light snow may linger at times
  across the area Tuesday into Wednesday, but with little to no
  additional accumulation.

- Period of very cold weather for much of this week, with
  temperatures falling below zero each of the next five nights,
  and wind chills bottoming out around 20 below zero (southeast)
  to near 40 below zero (northwest) Tuesday morning.

- Warmer weather appears likely for next weekend into early the
  following week, providing a light at the end of the tunnel.

&&

.DISCUSSION...
Issued at 204 PM CST Sun Feb 16 2025

A period of notably colder weather that began last night will
persist into much of the coming week, with the coldest period
coming generally from Monday night through Wednesday night.
Before that, however, accumulating snowfall is anticipated in
southwestern Iowa on Monday.

A large ridge of surface high pressure is spilling from southern
Canada down across the Dakotas and Iowa this afternoon, bringing
gusty northwest breezes and cold temperatures only in the single
digits to lower teens across most of our area at this time.
Winds will diminish after this evening as the core of the ridge
builds closer and decoupling takes place, which would normally
favor rapid radiational cooling especially with fresh snow on
the ground across much of the area. However, this will be
complicated by increasing clouds from the west/southwest as a
zone of modest frontogenetical forcing approaches in the brisk
zonal steering flow aloft. Hourly temperature trends tonight
will thus be very tricky to forecast as nighttime cooling may
initially be slowed a bit by the organized winds, accelerate as
the winds diminish, but then temperatures may stabilize or even
rise as mid/high level clouds spread in late. Given these
competing factors opted to stay very close to previous forecast
which is a little below the 50th percentile of the guidance
envelope, but any changes in the wind or sky cover forecast
could result in significant temperature variations across our
service area overnight.

As the aforementioned frontogenetical forcing builds in and
slides across Nebraska, southern Iowa, and northern Missouri it
will generate snowfall in these areas beginning late tonight and
continuing through Monday. Again, there are competing factors
supporting relatively higher or lower snowfall amounts in our
southwestern counties. Forecast soundings indicate a deep
saturated layer almost entirely within the DGZ (Dendritic Growth
Zone) on Monday morning, supporting high SLRs (Snow to Liquid
Ratios) and higher snowfall amounts. However, the forcing is
modest and forecast QPF light, only around 0.10 inch in our
southwest corner, plus near-surface dry air filtering out of the
high pressure ridge may undercut the snow a bit and result in
some fragmenting/sublimation effects which would lower the SLRs.
Once again maintained essentially a persistence forecast, with
maximum accumulations down around Ringgold and Taylor counties
of around 2-3 inches. That is actually above much of the
guidance, respecting the deep DGZ depicted in forecast
soundings. Did make two adjustments to the ongoing Winter
Weather Advisory in the southwest, adding Adams and Decatur
counties where forecast snow amounts approach 2.5" or so, and
delaying the start time of the advisory to 11Z/5AM Monday as the
precipitation onset time has delayed a bit. Also tightened up
the POP gradient on the northern edge of the snow, as dry air
entrainment from the north should result in a pretty sharp
cutoff with little to no accumulation expected north of a line
roughly from Atlantic to Bloomfield.

Aside from the snow in the south/southwest on Monday, the big
story will be the intense cold coming for several days this
week. The primary generator of this cold snap will be the
aforementioned surface high pressure ridge building down from
Canada, which will dominate the Midwest and Iowa until at least
Friday. The snow pack in place across much of the area will act
as a positive reinforcement as well, however, cloud cover will
provide some mitigating effects at times. In particular, from
Monday night through Wednesday a 500 MB trough will rotate
slowly into and over the Upper Midwest, resulting in mid/high
level clouds at times which may dampen daytime "warming" a bit
and could limit nighttime cooling somewhat significantly. In any
event it will be very cold, but the combined and sometimes
competing effects of snow cover, wind variations, and
intermittent clouds will influence cold weather watch, warning,
and advisory decisions over the next several days. At this time
have not made any changes to the ongoing Cold Weather Advisory
for tonight through Monday morning, or the Extreme Cold Watch
for Monday night through Tuesday morning. It still appears
likely warning criteria will be met across at least parts of the
area, if not most of it, even if mid/high clouds to persist
through Monday night. However, that would impact which parts of
the area meet warning criteria and which do not, so have
deferred this decision in favor of maintaining the watch at this
time. On Tuesday night and Wednesday night low temperatures
actually fall to even lower levels, however winds are lighter so
wind chill values are slightly less cold. Even so, it is
anticipated that either advisories or warnings will be needed
for these periods at some point as well.

In the extended forecast period, around next weekend into early
the following week, it appears we will see weaker and more
benign west northwesterly 500 MB flow, resulting in alternating
periods of modest thermal ridging as well as a return of
generally southwesterly surface flow. This should support
notably warmer weather and currently the forecast high
temperatures for next Saturday and Sunday are in the 20s and
30s, so that will provide something to look forward to during
the cold days ahead.

&&

.AVIATION /06Z TAFS THROUGH 06Z TUESDAY/...
Issued at 1127 PM CST Sun Feb 16 2025

A small area of MVFR cloud cover is passing across northern
Iowa and will impact KFOD/KMCW over the next couple hours. THis
has been addressed with a TEMPO group due to the patchy and
transient nature of the feature. Monday morning cloud cover will
expand across all sites with light snow expected in southwest
Iowa. Impacts to visibility due to falling snow are less
certain with better chances for higher rates and accumulation
further to the southwest, so have included -SN and used PROB30
groups for the lower chances for visibility impacts. Will
continue to adjust as the system approaches.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
Cold Weather Advisory until noon CST Monday for IAZ004>007-
015>017-023>028-035>039-050.
Extreme Cold Watch from late Monday night through Tuesday
morning for IAZ004>007-015>017-023>028-033>039-044>050-057>062-
070>075-081>086-092>097.
Winter Weather Advisory from 5 AM to 6 PM CST Monday for
IAZ081-092>094.

&&

DISCUSSION...Lee
AVIATION...Hagenhoff

Hazardous Weather Outlook
National Weather Service Des Moines IA
256 PM CST Sun Feb 16 2025

IAZ033-034-044>049-057>062-070>075-082>086-095>097-171400-
Sac-Calhoun-Crawford-Carroll-Greene-Boone-Story-Marshall-Audubon-
Guthrie-Dallas-Polk-Jasper-Poweshiek-Cass-Adair-Madison-Warren-
Marion-Mahaska-Union-Clarke-Lucas-Monroe-Wapello-Wayne-Appanoose-
Davis-
256 PM CST Sun Feb 16 2025

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...This afternoon and tonight

Very cold winds chills of 10 below to 20 below zero are expected
tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

An Extreme Cold Watch is in effect for the area for Monday night
and Tuesday morning. Please refer to the National Weather Service
website at weather.gov/desmoines for further details.

Very cold wind chills are expected much of this week. Overnight
and morning wind chill values of 15 below to 30 below zero will
be common through Friday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

IAZ081-092>094-171400-
Adams-Taylor-Ringgold-Decatur-
256 PM CST Sun Feb 16 2025

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...This afternoon and tonight

Very cold winds chills of 10 below to 20 below zero are expected
tonight.

A Winter Weather Advisory is in effect for the area beginning late
tonight, at 5 AM Monday. Please refer to the National Weather
Service website at weather.gov/desmoines for further details.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

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

An Extreme Cold Watch is in effect for the area for Monday night
and Tuesday morning. Please refer to the National Weather Service
website at weather.gov/desmoines for further details.

Very cold wind chills are expected much of this week. Overnight
and morning values of 15 below to 30 below zero will be common
through Friday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

IAZ004>007-015>017-023>028-035>039-050-171400-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Webster-
Hamilton-Hardin-Grundy-Black Hawk-Tama-
256 PM CST Sun Feb 16 2025

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...This afternoon and tonight

A Cold Weather Advisory is in effect for the area tonight and
Monday morning. Please refer to the National Weather Service
website at weather.gov/desmoines for further details.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

A Cold Weather Advisory is in effect for the area tonight and
Monday morning. An Extreme Cold Watch is in effect for the area
for Monday night and Tuesday morning. Please refer to the
National Weather Service website at weather.gov/desmoines for
further details.

Very cold wind chills are expected much of this week beginning
Monday night. Overnight and morning values of 20 below to 35
below zero will be common through Friday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.