Alert archive / Iowa / Winter Storm Warnings in 2021

Winter Storm Warning 3, NWS Des Moines, IA

January 29, 20217 counties in Iowa

NWS Des Moines, IA issued this winter storm warning at Jan 29, 2021, 2:56 PM CST for 7 counties in Iowa. It took effect at Jan 30, 2021, 9:00 AM CST. It was in force for 17 hr. 1 report came from inside the area while it was in force.

The area

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

The facts

Issued
Jan 29, 2021, 2:56 PM CST (20:56 UTC)
In effect from
Jan 30, 2021, 9:00 AM CST
Expired
Jan 31, 2021, 1:31 AM CST
In force
17 hr
Issued by
NWS Des Moines, IA

Counties Black Hawk County, IA, Bremer County, IA, Butler County, IA, Grundy County, IA, Hardin County, IA, Marshall County, IA, Tama County, IA

The radar

The Des Moines radar (KDMX), 113 km from the middle of the area, began a volume at 20:58 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

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

What was reported inside it

TimeReportWhereRemark
Jan 30, 4:04 PM CSTFREEZING RAIN 0.01Cedar Falls, IAICE FROM FREEZING DRIZZLE COVERING MOST SURFACES IN CEDAR FALLS - MAINLY SIDE STREETS AND PARKING LOTS. VIA SOCIAL MEDIA.

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

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 8.9 hours before the alert went out and 203 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Davenport, at 12:00Z on 2021-01-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2021-01-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 211 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1322 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
211 m²/s²
0-3 km storm-relative helicity
331 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

924 
WWUS43 KDMX 292056
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
256 PM CST Fri Jan 29 2021

...Icy Conditions Saturday...

.Expect areas of freezing drizzle or freezing rain to develop
Saturday morning over central to northern Iowa. The freezing
precipitation is likely to persist and even increase in intensity
during the afternoon hours. There will be a period of a wintry mix
of freezing rain and snow in the late afternoon into early evening
hours before switching over to all snow. There is the potential
for a tenth to a quarter of an inch of ice accrual over the
northeast part of the state. This ice will not only cause
hazardous travel conditions, but with the strong east winds, this
may lead to tree limbs and power outages. 

IAZ027-028-038-039-050-300500-
/O.UPG.KDMX.WS.A.0004.210130T2100Z-210131T1800Z/
/O.NEW.KDMX.WS.W.0003.210130T1500Z-210131T1500Z/
Butler-Bremer-Grundy-Black Hawk-Tama-
Including the cities of Parkersburg, Clarksville, Shell Rock, 
Greene, Aplington, Allison, Dumont, Waverly, Grundy Center, 
Reinbeck, Conrad, Dike, Wellsburg, Waterloo, Cedar Falls, Tama, 
Toledo, Traer, Dysart, and Gladbrook
256 PM CST Fri Jan 29 2021

...WINTER STORM WARNING IN EFFECT FROM 9 AM SATURDAY TO 9 AM CST
SUNDAY...

* WHAT...Heavy mixed precipitation expected. Total snow
  accumulations of 2 to 5 inches and ice accumulations of one 
  tenth to two tenths of an inch.

* WHERE...Northeast Iowa.

* WHEN...From 9 AM Saturday to 9 AM CST Sunday.

* IMPACTS...Plan on ice and snow covered roads. There is the
  potential for tree limb damage and power outages with the
  freezing rain potential and the strong winds. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ037-049-300500-
/O.NEW.KDMX.WS.W.0003.210130T1500Z-210131T1500Z/
Hardin-Marshall-
Including the cities of Iowa Falls, Eldora, Ackley, 
and Marshalltown
256 PM CST Fri Jan 29 2021

...WINTER STORM WARNING IN EFFECT FROM 9 AM SATURDAY TO 9 AM CST
SUNDAY...

* WHAT...Heavy mixed precipitation expected. Total snow
  accumulations of 2 to 5 inches and ice accumulations of one 
  tenth to two tenths of an inch.

* WHERE...East central Iowa.

* WHEN...From 9 AM Saturday to 9 AM CST Sunday.

* IMPACTS...Plan on ice and snow covered roads. There is the
  potential for tree limb damage and power outages with the
  freezing rain potential and the strong winds. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ004-005-015-023-024-033>035-045-046-058-071-300500-
/O.NEW.KDMX.WW.Y.0007.210130T1500Z-210131T1200Z/
Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Sac-Calhoun-Webster-
Carroll-Greene-Guthrie-Adair-
Including the cities of Estherville, Algona, Emmetsburg, 
Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, 
Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, 
Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Carroll, 
Jefferson, Guthrie Center, Panora, Bayard, Casey, Greenfield, 
Stuart, Adair, and Fontanelle
256 PM CST Fri Jan 29 2021

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

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to two inches and ice accumulations of around one tenth 
  of an inch.

* WHERE...West central to north central Iowa.

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

* IMPACTS...Plan on slippery road conditions. Tree limb damage and
  power outages are possible with the freezing rain and strong
  winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ006-007-016-017-025-026-036-047-048-059>062-072>075-300500-
/O.NEW.KDMX.WW.Y.0007.210130T1500Z-210131T1500Z/
Winnebago-Worth-Hancock-Cerro Gordo-Wright-Franklin-Hamilton-
Boone-Story-Dallas-Polk-Jasper-Poweshiek-Madison-Warren-Marion-
Mahaska-
Including the cities of Forest City, Lake Mills, Northwood, 
Manly, Garner, Britt, Kanawha, Mason City, Clear Lake, 
Eagle Grove, Clarion, Belmond, Hampton, Webster City, Boone, 
Ames, Perry, Waukee, Adel, Des Moines, Newton, Grinnell, 
Winterset, Earlham, Indianola, Norwalk, Carlisle, Pella, 
Knoxville, and Oskaloosa
256 PM CST Fri Jan 29 2021

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

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of 1 to 3 inches and ice accumulations of around one tenth of 
  an inch.

* WHERE...Central to north central Iowa.

* WHEN...From 9 AM Saturday to 9 AM CST Sunday.

* IMPACTS...Plan on slippery road conditions. Tree limb damage and
  power outages are possible with the freezing rain and strong
  winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

Hagenhoff/Podrazik

For more information from the National Weather Service visit
https://weather.gov/desmoines
7 follow-up statements
116 
WWUS43 KDMX 300245
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
845 PM CST Fri Jan 29 2021

...Icy Conditions Saturday...

.Expect areas of freezing drizzle or freezing rain to develop
Saturday morning over central to northern Iowa. The freezing
precipitation is likely to persist and even increase in intensity
during the afternoon hours. There will be a period of a wintry
mix of freezing rain and snow in the late afternoon into early
evening hours before switching over to all snow. There is the
potential for a tenth to a quarter of an inch of ice accrual over
the northeast part of the state. This ice will not only cause
hazardous travel conditions, but with the strong east winds, this
may lead to tree limbs and power outages.

IAZ027-028-037>039-049-050-301045-
/O.CON.KDMX.WS.W.0003.210130T1500Z-210131T1500Z/
Butler-Bremer-Hardin-Grundy-Black Hawk-Marshall-Tama-
Including the cities of Parkersburg, Clarksville, Shell Rock, 
Greene, Aplington, Allison, Dumont, Waverly, Iowa Falls, Eldora, 
Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, 
Waterloo, Cedar Falls, Marshalltown, Tama, Toledo, Traer, Dysart,
and Gladbrook
845 PM CST Fri Jan 29 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 9 AM SATURDAY TO
9 AM CST SUNDAY...

* WHAT...Heavy mixed precipitation expected. Total snow 
  accumulations of 2 to 5 inches and ice accumulations of one 
  tenth to two tenths of an inch.

* WHERE...Northeast Iowa.

* WHEN...From 9 AM Saturday to 9 AM CST Sunday.

* IMPACTS...Plan on ice and snow covered roads. There is the
  potential for tree limb damage and power outages with the
  freezing rain potential and the strong winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ004-005-015-023-024-033>035-045-046-058-071-301045-
/O.CON.KDMX.WW.Y.0007.210130T1500Z-210131T1200Z/
Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Sac-Calhoun-Webster-
Carroll-Greene-Guthrie-Adair-
Including the cities of Estherville, Algona, Emmetsburg, 
Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, 
Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, 
Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Carroll, 
Jefferson, Guthrie Center, Panora, Bayard, Casey, Greenfield, 
Stuart, Adair, and Fontanelle
845 PM CST Fri Jan 29 2021

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

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to two inches and ice accumulations of around one tenth 
  of an inch.

* WHERE...West central to north central Iowa.

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

* IMPACTS...Plan on slippery road conditions. Tree limb damage and
  power outages are possible with the freezing rain and strong
  winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ006-007-016-017-025-026-036-047-048-059>062-072>075-301045-
/O.CON.KDMX.WW.Y.0007.210130T1500Z-210131T1500Z/
Winnebago-Worth-Hancock-Cerro Gordo-Wright-Franklin-Hamilton-
Boone-Story-Dallas-Polk-Jasper-Poweshiek-Madison-Warren-Marion-
Mahaska-
Including the cities of Forest City, Lake Mills, Northwood, 
Manly, Garner, Britt, Kanawha, Mason City, Clear Lake, 
Eagle Grove, Clarion, Belmond, Hampton, Webster City, Boone, 
Ames, Perry, Waukee, Adel, Des Moines, Newton, Grinnell, 
Winterset, Earlham, Indianola, Norwalk, Carlisle, Pella, 
Knoxville, and Oskaloosa
845 PM CST Fri Jan 29 2021

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

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of 1 to 3 inches and ice accumulations of around one tenth of 
  an inch.

* WHERE...Central to north central Iowa.

* WHEN...From 9 AM Saturday to 9 AM CST Sunday.

* IMPACTS...Plan on slippery road conditions. Tree limb damage and
  power outages are possible with the freezing rain and strong
  winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/desmoines
543 
WWUS43 KDMX 300509
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
1109 PM CST Fri Jan 29 2021

...Icy Conditions Saturday...

.Expect areas of freezing drizzle or freezing rain to develop
Saturday morning over central to northern Iowa. The freezing
precipitation is likely to persist and even increase in intensity
during the afternoon hours. There will be a period of a wintry
mix of freezing rain and snow in the late afternoon into early
evening hours before switching over to all snow. There is the
potential for a tenth to a quarter of an inch of ice accrual over
the northeast part of the state. This ice will not only cause
hazardous travel conditions, but with the strong east winds, this
may lead to broken tree limbs and power outages.

IAZ027-028-037>039-049-050-301315-
/O.CON.KDMX.WS.W.0003.210130T1500Z-210131T1500Z/
Butler-Bremer-Hardin-Grundy-Black Hawk-Marshall-Tama-
Including the cities of Parkersburg, Clarksville, Shell Rock, 
Greene, Aplington, Allison, Dumont, Waverly, Iowa Falls, Eldora, 
Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, 
Waterloo, Cedar Falls, Marshalltown, Tama, Toledo, Traer, Dysart,
and Gladbrook
1109 PM CST Fri Jan 29 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 9 AM SATURDAY TO
9 AM CST SUNDAY...

* WHAT...Heavy mixed precipitation expected. Total snow 
  accumulations of 2 to 5 inches and ice accumulations of one 
  tenth to two tenths of an inch.

* WHERE...Northeast Iowa.

* WHEN...From 9 AM Saturday to 9 AM CST Sunday.

* IMPACTS...Plan on ice and snow covered roads. There is the 
  potential for tree limb damage and power outages with the 
  freezing rain potential and the strong winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ004-005-015-023-024-033>035-045-046-058-071-301315-
/O.CON.KDMX.WW.Y.0007.210130T1500Z-210131T1200Z/
Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Sac-Calhoun-Webster-
Carroll-Greene-Guthrie-Adair-
Including the cities of Estherville, Algona, Emmetsburg, 
Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, 
Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, 
Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Carroll, 
Jefferson, Guthrie Center, Panora, Bayard, Casey, Greenfield, 
Stuart, Adair, and Fontanelle
1109 PM CST Fri Jan 29 2021

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

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of up to two inches and ice accumulations of around one tenth 
  of an inch.

* WHERE...West central to north central Iowa.

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

* IMPACTS...Plan on slippery road conditions. Tree limb damage 
  and power outages are possible with the freezing rain and 
  strong winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ006-007-016-017-025-026-036-047-048-059>062-072>075-301315-
/O.CON.KDMX.WW.Y.0007.210130T1500Z-210131T1500Z/
Winnebago-Worth-Hancock-Cerro Gordo-Wright-Franklin-Hamilton-
Boone-Story-Dallas-Polk-Jasper-Poweshiek-Madison-Warren-Marion-
Mahaska-
Including the cities of Forest City, Lake Mills, Northwood, 
Manly, Garner, Britt, Kanawha, Mason City, Clear Lake, 
Eagle Grove, Clarion, Belmond, Hampton, Webster City, Boone, 
Ames, Perry, Waukee, Adel, Des Moines, Newton, Grinnell, 
Winterset, Earlham, Indianola, Norwalk, Carlisle, Pella, 
Knoxville, and Oskaloosa
1109 PM CST Fri Jan 29 2021

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

* WHAT...Mixed precipitation expected. Total snow accumulations 
  of 1 to 3 inches and ice accumulations of around one tenth of 
  an inch.

* WHERE...Central to north central Iowa.

* WHEN...From 9 AM Saturday to 9 AM CST Sunday.

* IMPACTS...Plan on slippery road conditions. Tree limb damage 
  and power outages are possible with the freezing rain and 
  strong winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/desmoines
003 
WWUS43 KDMX 300956
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
356 AM CST Sat Jan 30 2021

...Icy to Snowy Conditions Today through Sunday Morning...

.Expect areas of freezing rain or drizzle to develop this morning
over central to northern Iowa. The freezing precipitation is 
likely to persist and even increase in intensity during the 
afternoon hours, especially along and north of Highway 30. There 
will be a period of a wintry mix of freezing rain and snow late 
afternoon into early evening hours before switching over to all 
snow. There is the potential for a tenth to a quarter of an inch 
of ice accrual over northern portions of the state. This ice will
not only cause hazardous travel conditions, but with the breezy 
east winds, may also lead to damaged tree limbs and power lines.

IAZ027-028-037>039-049-050-301800-
/O.CON.KDMX.WS.W.0003.210130T1500Z-210131T1500Z/
Butler-Bremer-Hardin-Grundy-Black Hawk-Marshall-Tama-
Including the cities of Parkersburg, Clarksville, Shell Rock, 
Greene, Aplington, Allison, Dumont, Waverly, Iowa Falls, Eldora, 
Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, 
Waterloo, Cedar Falls, Marshalltown, Tama, Toledo, Traer, Dysart,
and Gladbrook
356 AM CST Sat Jan 30 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING
TO 9 AM CST SUNDAY...

* WHAT...Mixed precipitation expected. Total ice accumulations of
  one tenth to two tenths of an inch, mainly during daylight
  hours. Total snow accumulations of 2 to 5 inches, mainly during
  the evening and overnight.

* WHERE...Northeast Iowa.

* WHEN...From 9 AM Saturday to 9 AM CST Sunday.

* IMPACTS...Plan on ice and snow covered roads. Tree limb damage
  and power outages will be possible with the freezing rain and
  breezy winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ004-005-015-023-024-033>035-045-046-058-071-301800-
/O.CON.KDMX.WW.Y.0007.210130T1500Z-210131T1200Z/
Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Sac-Calhoun-Webster-
Carroll-Greene-Guthrie-Adair-
Including the cities of Estherville, Algona, Emmetsburg, 
Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, 
Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, 
Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Carroll, 
Jefferson, Guthrie Center, Panora, Bayard, Casey, Greenfield, 
Stuart, Adair, and Fontanelle
356 AM CST Sat Jan 30 2021

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

* WHAT...Mixed precipitation expected. Total ice accumulations up
  to around one tenth of an inch, mainly during daylight hours.
  Total snow accumulations of up to two inches, mainly during the
  evening and overnight.

* WHERE...West central to north central Iowa.

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

* IMPACTS...Plan on slick road conditions at times. Tree limb
  damage and power outages will be possible with the freezing 
  rain and breezy winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ006-007-016-017-025-026-036-047-048-059>062-072>075-301800-
/O.CON.KDMX.WW.Y.0007.210130T1500Z-210131T1500Z/
Winnebago-Worth-Hancock-Cerro Gordo-Wright-Franklin-Hamilton-
Boone-Story-Dallas-Polk-Jasper-Poweshiek-Madison-Warren-Marion-
Mahaska-
Including the cities of Forest City, Lake Mills, Northwood, 
Manly, Garner, Britt, Kanawha, Mason City, Clear Lake, 
Eagle Grove, Clarion, Belmond, Hampton, Webster City, Boone, 
Ames, Perry, Waukee, Adel, Des Moines, Newton, Grinnell, 
Winterset, Earlham, Indianola, Norwalk, Carlisle, Pella, 
Knoxville, and Oskaloosa
356 AM CST Sat Jan 30 2021

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

* WHAT...Mixed precipitation expected. Total ice accumulations up
  to around one tenth of an inch, mainly during daylight hours.
  Total snow accumulations of 1 to 3 inches, mainly during the
  evening and overnight.

* WHERE...Central to north central Iowa.

* WHEN...From 9 AM Saturday to 9 AM CST Sunday.

* IMPACTS...Plan on slick road conditions at times. Tree limb
  damage and power outages will be possible with the freezing 
  rain and breezy winds.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/desmoines

CURTIS
889 
WWUS43 KDMX 301631
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
1031 AM CST Sat Jan 30 2021

...Icy Then Snowy Conditions Today through Sunday Morning...

.Areas of light freezing rain will develop this afternoon, mainly
north of Highway 30. The precipitation will then become mixed this
evening before switching over to snow tonight. There is the 
potential for a tenth to a quarter of an inch of ice accrual in
some areas before the change to snow, which would result in 
hazardous travel conditions and perhaps spotty power outages.

IAZ027-028-037>039-049-050-310045-
/O.CON.KDMX.WS.W.0003.000000T0000Z-210131T1500Z/
Butler-Bremer-Hardin-Grundy-Black Hawk-Marshall-Tama-
Including the cities of Parkersburg, Clarksville, Shell Rock, 
Greene, Aplington, Allison, Dumont, Waverly, Iowa Falls, Eldora, 
Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, 
Waterloo, Cedar Falls, Marshalltown, Tama, Toledo, Traer, Dysart,
and Gladbrook
1031 AM CST Sat Jan 30 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM CST SUNDAY...

* WHAT...Mixed precipitation expected. Total ice accumulations of
  one tenth to two tenths of an inch, mainly this afternoon. Total
  snow accumulations of 2 to 5 inches, mainly tonight.

* WHERE...Northeast Iowa.

* WHEN...Through 9 AM CST Sunday.

* IMPACTS...Plan on ice and snow covered roads. Tree limb damage
  and power outages may be possible with the freezing rain and 
  breezy winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ004-005-015-023-024-033>035-045-046-058-071-310045-
/O.CON.KDMX.WW.Y.0007.000000T0000Z-210131T1200Z/
Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Sac-Calhoun-Webster-
Carroll-Greene-Guthrie-Adair-
Including the cities of Estherville, Algona, Emmetsburg, 
Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, 
Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, 
Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Carroll, 
Jefferson, Guthrie Center, Panora, Bayard, Casey, Greenfield, 
Stuart, Adair, and Fontanelle
1031 AM CST Sat Jan 30 2021

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

* WHAT...Mixed precipitation expected. Total ice accumulations
  around a tenth of an inch or less, mainly this afternoon. Total
  snow accumulations of up to two inches, mainly tonight.

* WHERE...West central to north central Iowa.

* WHEN...Through 6 AM CST Sunday.

* IMPACTS...Plan on slick road conditions at times. Tree limb
  damage and power outages may be possible with the freezing rain
  and breezy winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ006-007-016-017-025-026-036-047-048-059>062-072>075-310045-
/O.CON.KDMX.WW.Y.0007.000000T0000Z-210131T1500Z/
Winnebago-Worth-Hancock-Cerro Gordo-Wright-Franklin-Hamilton-
Boone-Story-Dallas-Polk-Jasper-Poweshiek-Madison-Warren-Marion-
Mahaska-
Including the cities of Forest City, Lake Mills, Northwood, 
Manly, Garner, Britt, Kanawha, Mason City, Clear Lake, 
Eagle Grove, Clarion, Belmond, Hampton, Webster City, Boone, 
Ames, Perry, Waukee, Adel, Des Moines, Newton, Grinnell, 
Winterset, Earlham, Indianola, Norwalk, Carlisle, Pella, 
Knoxville, and Oskaloosa
1031 AM CST Sat Jan 30 2021

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

* WHAT...Mixed precipitation expected. Total ice accumulations
  around a tenth of an inch or less, mainly this afternoon. Total
  snow accumulations of 1 to 3 inches, mainly tonight.

* WHERE...Central to north central Iowa.

* WHEN...Through 9 AM CST Sunday.

* IMPACTS...Plan on slick road conditions at times. Tree limb
  damage and power outages may be possible with the freezing rain
  and breezy winds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/desmoines
965 
WWUS43 KDMX 302048
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
248 PM CST Sat Jan 30 2021

...Icy Then Snowy This Evening Through Sunday Morning...

.Light freezing rain will persist across much of northern Iowa
through this evening, mainly north of Highway 30, resulting in 
areas of very slick road conditions. After dark tonight the rain 
will change over to snow, with light to moderate accumulations 
forecast and continued hazardous travel conditions.

IAZ027-028-037>039-049-050-310500-
/O.CON.KDMX.WS.W.0003.000000T0000Z-210131T1500Z/
Butler-Bremer-Hardin-Grundy-Black Hawk-Marshall-Tama-
Including the cities of Parkersburg, Clarksville, Shell Rock, 
Greene, Aplington, Allison, Dumont, Waverly, Iowa Falls, Eldora, 
Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, 
Waterloo, Cedar Falls, Marshalltown, Tama, Toledo, Traer, Dysart,
and Gladbrook
248 PM CST Sat Jan 30 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM CST SUNDAY...

* WHAT...Mixed precipitation, initially light freezing rain then
  changing to snow tonight. Ice accumulations around a tenth of 
  an inch through this evening. Total snow accumulations of 2 to 5
  inches tonight into Sunday.

* WHERE...Northeast Iowa.

* WHEN...Through 9 AM CST Sunday.

* IMPACTS...Plan on ice and snow covered roads and dangerous
  travel conditions at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ004-005-015-023-024-033>035-045-046-058-071-310500-
/O.CON.KDMX.WW.Y.0007.000000T0000Z-210131T1200Z/
Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Sac-Calhoun-Webster-
Carroll-Greene-Guthrie-Adair-
Including the cities of Estherville, Algona, Emmetsburg, 
Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, 
Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, 
Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Carroll, 
Jefferson, Guthrie Center, Panora, Bayard, Casey, Greenfield, 
Stuart, Adair, and Fontanelle
248 PM CST Sat Jan 30 2021

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

* WHAT...Mixed precipitation, initially light freezing rain then
  changing to snow tonight. Ice accumulations less a tenth of an
  inch through this evening. Total snow accumulations of up to 2 
  inches tonight into Sunday.

* WHERE...Parts of west central to north central Iowa.

* WHEN...Through 6 AM CST Sunday.

* IMPACTS...Ice and snow covered roads in some areas, resulting 
  in hazardous travel conditions at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ006-007-016-017-025-026-036-047-048-059>062-072>075-310500-
/O.CON.KDMX.WW.Y.0007.000000T0000Z-210131T1500Z/
Winnebago-Worth-Hancock-Cerro Gordo-Wright-Franklin-Hamilton-
Boone-Story-Dallas-Polk-Jasper-Poweshiek-Madison-Warren-Marion-
Mahaska-
Including the cities of Forest City, Lake Mills, Northwood, 
Manly, Garner, Britt, Kanawha, Mason City, Clear Lake, 
Eagle Grove, Clarion, Belmond, Hampton, Webster City, Boone, 
Ames, Perry, Waukee, Adel, Des Moines, Newton, Grinnell, 
Winterset, Earlham, Indianola, Norwalk, Carlisle, Pella, 
Knoxville, and Oskaloosa
248 PM CST Sat Jan 30 2021

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

* WHAT...Mixed precipitation, initially light freezing rain then
  changing to snow tonight. Ice accumulations less a tenth of an
  inch through this evening. Total snow accumulations of up to 2 
  inches tonight into Sunday.

* WHERE...Parts of north central, central, and eastern Iowa.

* WHEN...Through 9 AM CST Sunday.

* IMPACTS...Ice and snow covered roads in some areas, resulting 
  in hazardous travel conditions at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/desmoines
608 
WWUS43 KDMX 310246
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
846 PM CST Sat Jan 30 2021

...Ice Changing to Snow into Sunday Morning...

.Areas of light freezing drizzle and freezing rain look to persist
over portions of western to northern Iowa. The precipitation has
begun to switch over to snow over the eastern portions of Iowa. 
Many roads remain icy and hazardous to travel on late tonight and
the conditions will persist into the overnight hours.

IAZ027-028-037>039-049-050-311100-
/O.CON.KDMX.WS.W.0003.000000T0000Z-210131T1500Z/
Butler-Bremer-Hardin-Grundy-Black Hawk-Marshall-Tama-
Including the cities of Parkersburg, Clarksville, Shell Rock, 
Greene, Aplington, Allison, Dumont, Waverly, Iowa Falls, Eldora, 
Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, 
Waterloo, Cedar Falls, Marshalltown, Tama, Toledo, Traer, Dysart,
and Gladbrook
846 PM CST Sat Jan 30 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM CST SUNDAY...

* WHAT...Areas of freezing drizzle look to switch to snow late
  tonight. Ice accumulations around a tenth of an inch through
  this evening. Total snow accumulations of 2 to 5 inches by
  Sunday morning.

* WHERE...Northeast Iowa.

* WHEN...Through 9 AM CST Sunday.

* IMPACTS...Plan on icy and snow covered roads and dangerous
  travel conditions through the overnight hours. Some isolated
  power outages may occur from the ice accumulation on tree limbs
  and power lines. Low visibility is likely at times due to the
  falling snow or freezing drizzle. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ004-005-015-023-024-033>035-045-046-058-071-311100-
/O.CON.KDMX.WW.Y.0007.000000T0000Z-210131T1200Z/
Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Sac-Calhoun-Webster-
Carroll-Greene-Guthrie-Adair-
Including the cities of Estherville, Algona, Emmetsburg, 
Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, 
Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, 
Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Carroll, 
Jefferson, Guthrie Center, Panora, Bayard, Casey, Greenfield, 
Stuart, Adair, and Fontanelle
846 PM CST Sat Jan 30 2021

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

* WHAT...Areas of light freezing drizzle look to continue through
  the late night hours before switching to snow. A light glaze has
  already occurred and an additional few hundredths of an inch are
  possible. Total snow accumulations of up to 2 inches are
  possible by Sunday morning.

* WHERE...Parts of west central to north central Iowa.

* WHEN...Through 6 AM CST Sunday.

* IMPACTS...Icy roads have already been reported tonight. Expect
  icy then snow covered roads into Sunday morning leading to
  dangerous travel conditions. In addition, with the light
  freezing drizzle, visibility will be reduced at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ006-007-016-017-025-026-036-047-048-059>062-072>075-311100-
/O.CON.KDMX.WW.Y.0007.000000T0000Z-210131T1500Z/
Winnebago-Worth-Hancock-Cerro Gordo-Wright-Franklin-Hamilton-
Boone-Story-Dallas-Polk-Jasper-Poweshiek-Madison-Warren-Marion-
Mahaska-
Including the cities of Forest City, Lake Mills, Northwood, 
Manly, Garner, Britt, Kanawha, Mason City, Clear Lake, 
Eagle Grove, Clarion, Belmond, Hampton, Webster City, Boone, 
Ames, Perry, Waukee, Adel, Des Moines, Newton, Grinnell, 
Winterset, Earlham, Indianola, Norwalk, Carlisle, Pella, 
Knoxville, and Oskaloosa
846 PM CST Sat Jan 30 2021

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

* WHAT...Areas of light freezing drizzle look to continue through
  the late night hours before switching to snow. A light glaze has
  already occurred and an additional few hundredths of an inch are
  possible. Total snow accumulations of up to 2 inches are
  possible by Sunday morning.

* WHERE...Parts of north central, central, and eastern Iowa.

* WHEN...Through 9 AM CST Sunday.

* IMPACTS...Icy roads have already been reported tonight. Expect
  icy then snow covered roads into Sunday morning leading to
  dangerous travel conditions. In addition, with the light
  freezing drizzle, visibility will be reduced at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/desmoines
791 
WWUS43 KDMX 310731
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
131 AM CST Sun Jan 31 2021

...Freezing Drizzle to Light Snow into Sunday Morning...

.Areas of light freezing drizzle look to persist a bit longer 
over portions of western to northern Iowa tonight. Elsewhere, 
precipitation has switched over to snow over the central and 
eastern portions of Iowa. Many roads remain icy and or snow
covered and hazardous to travel on and the conditions will 
persist into Sunday morning.

IAZ027-028-037>039-049-050-311500-
/O.CAN.KDMX.WS.W.0003.000000T0000Z-210131T1500Z/
/O.EXA.KDMX.WW.Y.0007.000000T0000Z-210131T1500Z/
Butler-Bremer-Hardin-Grundy-Black Hawk-Marshall-Tama-
Including the cities of Parkersburg, Clarksville, Shell Rock, 
Greene, Aplington, Allison, Dumont, Waverly, Iowa Falls, Eldora, 
Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, 
Waterloo, Cedar Falls, Marshalltown, Tama, Toledo, Traer, Dysart,
and Gladbrook
131 AM CST Sun Jan 31 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 AM CST THIS
MORNING...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Freezing drizzle and light snow. An additional light
  glazing of ice and snowfall up to two inches. 

* WHERE...Portions of northeast Iowa.

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

* IMPACTS...Roads are expected to remain slick and hazardous due
  to a glazing of ice and or snow cover, especially along
  untreated or rural roadways. Visibilities may also fall under 
  1 mile at times. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ004-005-015-023-024-033>035-045-046-058-071-311200-
/O.CON.KDMX.WW.Y.0007.000000T0000Z-210131T1200Z/
Emmet-Kossuth-Palo Alto-Pocahontas-Humboldt-Sac-Calhoun-Webster-
Carroll-Greene-Guthrie-Adair-
Including the cities of Estherville, Algona, Emmetsburg, 
Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, 
Sac City, Lake View, Odebolt, Wall Lake, Schaller, Early, 
Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Carroll, 
Jefferson, Guthrie Center, Panora, Bayard, Casey, Greenfield, 
Stuart, Adair, and Fontanelle
131 AM CST Sun Jan 31 2021

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

* WHAT...Freezing drizzle and light snow. An additional light
  glazing of ice and light dusting of snow. 

* WHERE...Parts of west central to north central Iowa.

* WHEN...Through 6 AM CST Sunday.

* IMPACTS...Roads are expected to remain slick and hazardous due
  to a glazing of ice and or snow cover, especially along
  untreated or rural roadways. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

IAZ006-007-016-017-025-026-036-047-048-059>062-072>075-311500-
/O.CON.KDMX.WW.Y.0007.000000T0000Z-210131T1500Z/
Winnebago-Worth-Hancock-Cerro Gordo-Wright-Franklin-Hamilton-
Boone-Story-Dallas-Polk-Jasper-Poweshiek-Madison-Warren-Marion-
Mahaska-
Including the cities of Forest City, Lake Mills, Northwood, 
Manly, Garner, Britt, Kanawha, Mason City, Clear Lake, 
Eagle Grove, Clarion, Belmond, Hampton, Webster City, Boone, 
Ames, Perry, Waukee, Adel, Des Moines, Newton, Grinnell, 
Winterset, Earlham, Indianola, Norwalk, Carlisle, Pella, 
Knoxville, and Oskaloosa
131 AM CST Sun Jan 31 2021

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

* WHAT...Freezing drizzle and light snow. An additional light
  glazing of ice and snowfall up to around an inch. 

* WHERE...Parts of north central, central, and eastern Iowa.

* WHEN...Through 9 AM CST Sunday.

* IMPACTS...Roads are expected to remain slick and hazardous due
  to a glazing of ice and or snow cover, especially along
  untreated or rural roadways. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/desmoines

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 29, 2:56 AM CSTWinter Storm WatchDMXBlack Hawk, Bremer, Butler, Grundy, Tama12 hr
Jan 29, 2:56 PM CSTWinter Weather AdvisoryDMXAdair, Black Hawk, Boone, Bremer, Butler, Calhoun and 30 more42 hr

Nearby

Winter Storm Warnings in Iowa, 2021Every winter storm warning in 2021

Sources

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