Alert archive / Iowa / Winter Storm Warnings in 2023

Winter Storm Warning 2, NWS Des Moines, IA

January 27, 202315 counties in Iowa

NWS Des Moines, IA issued this winter storm warning at Jan 27, 2023, 3:08 AM CST for 15 counties in Iowa. It took effect at Jan 28, 2023, 3:00 AM CST. It was in force for 18 hr. 9 reports came from inside the area while it was in force.

The area

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

The facts

Issued
Jan 27, 2023, 3:08 AM CST (09:08 UTC)
In effect from
Jan 28, 2023, 3:00 AM CST
Expired
Jan 28, 2023, 8:55 PM CST
In force
18 hr
Issued by
NWS Des Moines, IA

Counties Butler County, IA, Calhoun County, IA, Cerro Gordo County, IA, Franklin County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Humboldt County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA, Sac County, IA, Webster County, IA, Wright County, IA

The radar

The Des Moines radar (KDMX), 109 km from the middle of the area, began a volume at 09:13 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 28, 12:30 PM CSTSNOW 2.5Parkersburg, IAVIA SOCIAL MEDIA.
Jan 28, 1:28 PM CSTSNOW 5.21 E Fort Dodge, IA
Jan 28, 1:48 PM CSTSNOW 32 Ene Fort Dodge, IA
Jan 28, 3:15 PM CSTSNOW 4Garner, IA
Jan 28, 4:46 PM CSTSNOW 41 Se Algona, IA
Jan 28, 4:56 PM CSTSNOW 6.21 Ne Fort Dodge, IASNOW AND BLOWING SNOW REDUCING VISIBILITY AT TIMES AND CAUSING DRIFTS.
Jan 28, 7:43 PM CSTSNOW 4Pocahontas, IAFROM POCAHONTAS PD. STRONG NORTH WIND AND BLOWING SNOW. DRIFTING DEVELOPS RAPIDLY. VISIBILITY IS 2 MILES. 4 INCHES OF SNOW HAVE FALLEN. PROTECTED AREAS ARE TREACHEROUS AS THE SNOW BUILDS UP BEHIND THE BREAK.
Jan 28, 7:58 PM CSTSNOW 5.32 Ene Fort Dodge, IA
Jan 28, 9:00 PM CSTSNOW 4Mason City, IAFROM KIMT TV.

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

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 9.1 hours before the alert went out and 240 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2023-01-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2023-01-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 square meters per square second.19395878Sfc1 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
750 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
176 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

015 
WWUS43 KDMX 270908
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
308 AM CST Fri Jan 27 2023

...Area of Moderate to Heavy Snowfall Overnight Friday into 
Saturday...

.A relatively narrow area of moderate to heavy snowfall is
expected to develop Friday night into Saturday over portions of
central into northern Iowa. Snowfall will spread in from the west
overnight Friday, expanding eastward. Heaviest snowfall is 
expected to fall in an east west oriented band around the Highway 
20 to Highway 3 corridors, where amounts of 5 to 7 inches or
greater will be possible, especially west of Interstate 35. Heavy
snowfall rates of an inch an hour or greater is likely within the
heaviest banding. Snowfall will then exit eastward Saturday 
afternoon and evening.

It remains possible for the axis of heaviest snowfall to shift 
outside of the Highway 20 to Highway 3 corridors. Monitor forecast
updates for any possible shifts. 

IAZ023-024-033>035-271715-
/O.NEW.KDMX.WS.W.0002.230128T0600Z-230129T0300Z/
Pocahontas-Humboldt-Sac-Calhoun-Webster-
Including the cities of Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, Humboldt, Sac City, Lake View, Odebolt, Wall Lake, 
Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, 
and Fort Dodge
308 AM CST Fri Jan 27 2023

...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 PM
CST SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 7 
  inches or greater.

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

* WHEN...From midnight tonight to 9 PM CST Saturday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow
  and periods of heavy snowfall could significantly reduce
  visibility. The cold wind chills as low as 15 below zero could
  result in hypothermia if precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IAZ004-005-015>017-025>028-036>039-044>050-271715-
/O.NEW.KDMX.WW.Y.0003.230128T0600Z-230129T0300Z/
Emmet-Kossuth-Palo Alto-Hancock-Cerro Gordo-Wright-Franklin-
Butler-Bremer-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-
Greene-Boone-Story-Marshall-Tama-
Including the cities of Estherville, Algona, Emmetsburg, Garner, 
Britt, Kanawha, Mason City, Clear Lake, Eagle Grove, Clarion, 
Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, 
Aplington, Allison, Dumont, Waverly, Webster City, Iowa Falls, 
Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg,
Waterloo, Cedar Falls, Denison, Carroll, Jefferson, Boone, Ames, 
Marshalltown, Tama, Toledo, Traer, Dysart, and Gladbrook
308 AM CST Fri Jan 27 2023

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
9 PM CST SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Portions of central into northern Iowa

* WHEN...From midnight tonight to 9 PM CST Saturday.

* IMPACTS...Plan on slippery road conditions. The cold wind chills
  as low as 15 below zero could result in hypothermia if
  precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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

&&

$$

For more information from the National Weather Service visit
http://weather.gov/desmoines
7 follow-up statements
363 
WWUS43 KDMX 271656
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
1056 AM CST Fri Jan 27 2023

...Band of Moderate to Heavy Snowfall tonight into Saturday
- latest forecast trending northward...

.A relatively narrow band of moderate to heavy snowfall will 
develop late tonight into Saturday over portions of northern 
Iowa. Heaviest snowfall is currently expected to fall in an east-
west oriented band around the Highway 20 to Highway 3 corridors, 
where amounts of 5 to 7 inches or greater will be possible, 
especially west of Interstate 35. However, forecast trends this
morning are shifting northward and adjustments to the
warning/advisory are likely later today. Be sure to monitor the 
latest forecast updates.

IAZ023-024-033>035-280100-
/O.CON.KDMX.WS.W.0002.230128T0600Z-230129T0300Z/
Pocahontas-Humboldt-Sac-Calhoun-Webster-
Including the cities of Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, Humboldt, Sac City, Lake View, Odebolt, Wall Lake, 
Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, 
and Fort Dodge
1056 AM CST Fri Jan 27 2023

...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 9 PM CST SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 7 
  inches or greater. 

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

* WHEN...From midnight tonight to 9 PM CST Saturday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow
  and periods of heavy snowfall could significantly reduce
  visibility. Cold wind chills as low as 15 below zero could 
  result in hypothermia if precautions are not taken. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IAZ004-005-015>017-025>028-036>039-044>050-280100-
/O.CON.KDMX.WW.Y.0003.230128T0600Z-230129T0300Z/
Emmet-Kossuth-Palo Alto-Hancock-Cerro Gordo-Wright-Franklin-
Butler-Bremer-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-
Greene-Boone-Story-Marshall-Tama-
Including the cities of Estherville, Algona, Emmetsburg, Garner, 
Britt, Kanawha, Mason City, Clear Lake, Eagle Grove, Clarion, 
Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, 
Aplington, Allison, Dumont, Waverly, Webster City, Iowa Falls, 
Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg,
Waterloo, Cedar Falls, Denison, Carroll, Jefferson, Boone, Ames, 
Marshalltown, Tama, Toledo, Traer, Dysart, and Gladbrook
1056 AM CST Fri Jan 27 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO 9 PM CST SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches. 

* WHERE...Portions of central into northern Iowa

* WHEN...From midnight tonight to 9 PM CST Saturday.

* IMPACTS...Plan on slippery road conditions. Cold wind chills as
  low as 15 below zero could result in hypothermia if precautions
  are not taken. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

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

&&

$$
898 
WWUS43 KDMX 272055
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
255 PM CST Fri Jan 27 2023

...Band of Moderate to Heavy Snowfall Late Tonight into Saturday...

.A relatively narrow band of moderate to heavy snowfall will
develop late tonight and persist into Saturday over the northern
half of Iowa. Amounts will be heaviest north of Highway 20 with a
quick drop off in amounts on the southern side of the snowfall.
The precipitation is likely to diminish later Saturday and may be
mixed with freezing drizzle at times. 

IAZ005-015>017-025-026-280500-
/O.UPG.KDMX.WW.Y.0003.230128T0600Z-230129T0300Z/
/O.EXA.KDMX.WS.W.0002.230128T0600Z-230129T0300Z/
Kossuth-Palo Alto-Hancock-Cerro Gordo-Wright-Franklin-
Including the cities of Algona, Emmetsburg, Garner, Britt, 
Kanawha, Mason City, Clear Lake, Eagle Grove, Clarion, Belmond, 
and Hampton
255 PM CST Fri Jan 27 2023

...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 PM
CST SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 8
  inches. Areas of blowing snow are also expected with increasing 
  northeast to north winds on Saturday.

* WHERE...Much of north central Iowa.

* WHEN...From midnight tonight to 9 PM CST Saturday.

* IMPACTS...Travel could be very difficult. Areas of blowing snow
  and heavy falling snowfall could significantly reduce 
  visibility. Cold wind chills as low as 15 below zero could 
  result in hypothermia if precautions are not taken. 

* ADDITIONAL DETAILS...A brief period of freezing drizzle may
  follow the heavier snowfall which may prolong travel
  difficulties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IAZ023-024-033>035-280500-
/O.CON.KDMX.WS.W.0002.230128T0600Z-230129T0300Z/
Pocahontas-Humboldt-Sac-Calhoun-Webster-
Including the cities of Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, Humboldt, Sac City, Lake View, Odebolt, Wall Lake, 
Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, 
and Fort Dodge
255 PM CST Fri Jan 27 2023

...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 9 PM CST SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 8
  inches. Areas of blowing snow are also expected with increasing 
  northeast to north winds on Saturday.

* WHERE...Portions of north central Iowa.

* WHEN...From midnight tonight to 9 PM CST Saturday.

* IMPACTS...Travel could be very difficult. Areas of blowing snow
  and heavy falling snowfall could significantly reduce 
  visibility. Cold wind chills as low as 15 below zero could 
  result in hypothermia if precautions are not taken. 

* ADDITIONAL DETAILS...A brief period of freezing drizzle may
  follow the heavier snowfall which may prolong travel
  difficulties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IAZ006-007-280500-
/O.EXA.KDMX.WW.Y.0003.230128T0600Z-230129T0300Z/
Winnebago-Worth-
Including the cities of Forest City, Lake Mills, Northwood, 
and Manly
255 PM CST Fri Jan 27 2023

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
9 PM CST SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 inches.
  Areas of blowing snow are expected as well on Saturday.

* WHERE...Far north central Iowa.

* WHEN...From midnight tonight to 9 PM CST Saturday.

* IMPACTS...Plan on slippery road conditions. Cold wind chills 
  as low as 15 below zero could result in hypothermia if 
  precautions are not taken.

* ADDITIONAL DETAILS...A brief period of freezing drizzle may
  follow the heavier snowfall which may prolong travel
  difficulties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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

&&

$$

IAZ004-027-028-036>039-044>050-280500-
/O.CON.KDMX.WW.Y.0003.230128T0600Z-230129T0300Z/
Emmet-Butler-Bremer-Hamilton-Hardin-Grundy-Black Hawk-Crawford-
Carroll-Greene-Boone-Story-Marshall-Tama-
Including the cities of Estherville, Parkersburg, Clarksville, 
Shell Rock, Greene, Aplington, Allison, Dumont, Waverly, 
Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, 
Reinbeck, Conrad, Dike, Wellsburg, Waterloo, Cedar Falls, 
Denison, Carroll, Jefferson, Boone, Ames, Marshalltown, Tama, 
Toledo, Traer, Dysart, and Gladbrook
255 PM CST Fri Jan 27 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO 9 PM CST SATURDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 inches.
  Areas of blowing snow are also expected on Saturday.

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

* WHEN...From midnight tonight to 9 PM CST Saturday.

* IMPACTS...Plan on slippery road conditions. Cold wind chills 
  as low as 15 below zero could result in hypothermia if 
  precautions are not taken.

* ADDITIONAL DETAILS...A brief period of freezing drizzle may
  follow the heavier snowfall which may prolong travel
  difficulties. In addition, snowfall amounts are likely to drop
  off quickly within the southern row of counties in the advisory. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

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

&&

$$

For more information from the National Weather Service visit
http://weather.gov/desmoines
353 
WWUS43 KDMX 280323
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
923 PM CST Fri Jan 27 2023

...Moderate to Heavy Snow and Hazardous Travel Saturday...

.Moderate to heavy snowfall will develop early Saturday and 
persist through the day over the northern half of Iowa. Amounts 
will be heaviest north of Highway 30 with a quick drop off in 
amounts to the south. The heaviest snowfall rates will likely
occur during the morning hours. The precipitation is likely to 
diminish later in the afternoon, and may be mixed with freezing 
drizzle at times central and south.

IAZ005-015>017-023>026-033>035-281130-
/O.EXT.KDMX.WS.W.0002.230128T0900Z-230129T0300Z/
Kossuth-Palo Alto-Hancock-Cerro Gordo-Pocahontas-Humboldt-Wright-
Franklin-Sac-Calhoun-Webster-
Including the cities of Algona, Emmetsburg, Garner, Britt, 
Kanawha, Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, 
Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, 
Hampton, Sac City, Lake View, Odebolt, Wall Lake, Schaller, 
Early, Rockwell City, Manson, Lake City, Pomeroy, and Fort Dodge
923 PM CST Fri Jan 27 2023

...WINTER STORM WARNING NOW IN EFFECT FROM 3 AM TO 9 PM CST
SATURDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 7
  inches, with locally heavier amounts possible.

* WHERE...Much of north central Iowa.

* WHEN...From 3 AM to 9 PM CST Saturday.

* IMPACTS...Plan on snow covered roads and slippery conditions.
  Areas of blowing snow could also significantly reduce
  visibility. Cold wind chills as low as 15 below zero could 
  cause frostbite on exposed skin in prolonged exposure.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IAZ004-006-007-027-028-036>039-044>050-281130-
/O.EXT.KDMX.WW.Y.0003.230128T0900Z-230129T0300Z/
Emmet-Winnebago-Worth-Butler-Bremer-Hamilton-Hardin-Grundy-
Black Hawk-Crawford-Carroll-Greene-Boone-Story-Marshall-Tama-
Including the cities of Estherville, Forest City, Lake Mills, 
Northwood, Manly, Parkersburg, Clarksville, Shell Rock, Greene, 
Aplington, Allison, Dumont, Waverly, Webster City, Iowa Falls, 
Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg,
Waterloo, Cedar Falls, Denison, Carroll, Jefferson, Boone, Ames, 
Marshalltown, Tama, Toledo, Traer, Dysart, and Gladbrook
923 PM CST Fri Jan 27 2023

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 3 AM TO 9 PM CST
SATURDAY...

* WHAT...Moderate to heavy snow expected. Total snow accumulations
  of 3 to 5 inches.

* WHERE...Portions of northern and central Iowa

* WHEN...From 3 AM to 9 PM CST Saturday.

* IMPACTS...Plan on snow covered roads and slippery conditions. 
  The cold wind chills as low as 15 below zero could result in 
  hypothermia if precautions are not taken.

* ADDITIONAL DETAILS...A brief period of freezing drizzle may
  follow the snowfall along the Highway 30 corridor, which may
  prolong travel difficulties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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

&&

$$

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

Small
014 
WWUS43 KDMX 280901
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
301 AM CST Sat Jan 28 2023

...Hazardous Travel Today with Moderate to at Times Heavy Snowfall
over Northern into Central Iowa...

.Snow has moved into western Iowa and is beginning to push toward
the Highway 169 corridor as the clock ticks near 3am. Snowfall 
will continue to advance eastward over northern and central Iowa 
early this morning and persist much of the day over the northern 
half of the state. 

The highest snowfall rates will be this morning and lead to 
visibility as low as around a half a mile over northern into at 
times central Iowa. Sustained winds of 10 to 20 mph with gusts up 
to around 25 mph will also cause some blowing snow, which of 
course will be the worst when there is falling snow. With rates 
lessening into this afternoon and evening, the visibility 
reduction will not be as low.

Amounts will be the highest north of Highway 20 up to around 
Highway 18 with a quick drop off in amounts to the south toward 
Interstate 80 and to the north toward the Iowa Minnesota border. 
As the precipitation diminishes later in the afternoon into early 
this evening, there may also be freezing drizzle mixed in at times
generally along and south of Highway 30.


IAZ027-036>038-281715-
/O.UPG.KDMX.WW.Y.0003.000000T0000Z-230129T0300Z/
/O.EXA.KDMX.WS.W.0002.230128T0900Z-230129T0300Z/
Butler-Hamilton-Hardin-Grundy-
Including the cities of Parkersburg, Clarksville, Shell Rock, 
Greene, Aplington, Allison, Dumont, Webster City, Iowa Falls, 
Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, 
and Wellsburg
301 AM CST Sat Jan 28 2023

...WINTER STORM WARNING IN EFFECT UNTIL 9 PM CST THIS EVENING...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 7
  inches, with locally higher amounts possible.

* WHERE...Much of north central Iowa.

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

* IMPACTS...Plan on snow covered roads and slippery conditions.
  Sustained winds of 10 to 20 mph with gusts up to around 25 mph
  could cause significantly reduced visibility. 

* ADDITIONAL DETAILS...Cold wind chills as low as 10 to 15 below 
  zero could cause frostbite on exposed skin in prolonged 
  exposure.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IAZ005-015>017-023>026-033>035-281715-
/O.CON.KDMX.WS.W.0002.000000T0000Z-230129T0300Z/
Kossuth-Palo Alto-Hancock-Cerro Gordo-Pocahontas-Humboldt-Wright-
Franklin-Sac-Calhoun-Webster-
Including the cities of Algona, Emmetsburg, Garner, Britt, 
Kanawha, Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, 
Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, 
Hampton, Sac City, Lake View, Odebolt, Wall Lake, Schaller, 
Early, Rockwell City, Manson, Lake City, Pomeroy, and Fort Dodge
301 AM CST Sat Jan 28 2023

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 7
  inches, with locally higher amounts possible.

* WHERE...Much of north central Iowa.

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

* IMPACTS...Plan on snow covered roads and slippery conditions.
  Sustained winds of 10 to 20 mph with gusts up to around 25 mph
  could cause significantly reduced visibility. 

* ADDITIONAL DETAILS...Cold wind chills as low as 10 to 15 below 
  zero could cause frostbite on exposed skin in prolonged 
  exposure.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IAZ004-006-007-028-039-044>050-281715-
/O.CON.KDMX.WW.Y.0003.000000T0000Z-230129T0300Z/
Emmet-Winnebago-Worth-Bremer-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-
Including the cities of Estherville, Forest City, Lake Mills, 
Northwood, Manly, Waverly, Waterloo, Cedar Falls, Denison, 
Carroll, Jefferson, Boone, Ames, Marshalltown, Tama, Toledo, 
Traer, Dysart, and Gladbrook
301 AM CST Sat Jan 28 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Snow expected, with perhaps freezing drizzle. Total snow
  accumulations of 2 to 4 inches, though 4 to near 6 inches around
  Highway 20 to around Highway 3. Ice accumulations of a light 
  glaze.

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

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

* IMPACTS...Plan on snow covered roads and slippery conditions.
  Sustained winds of 10 to 20 mph with gusts up to around 25 mph
  could cause reduced visibility.

* ADDITIONAL DETAILS... Cold wind chills as low as 10 to 15 below
  zero could cause frostbite on exposed skin in prolonged 
  exposure. A brief period of freezing drizzle may follow the 
  snowfall along the Highway 30 corridor, which may prolong travel
  difficulties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

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

&&

$$

For more information from the National Weather Service visit
http://weather.gov/desmoines
358 
WWUS43 KDMX 281530
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
930 AM CST Sat Jan 28 2023

...Hazardous Travel Today with Moderate to at Times Heavy
Snowfall over Northern into Central Iowa...

The highest snowfall rates will be this morning and lead to 
visibility as low as around a half a mile over northern into at 
times central Iowa. Sustained winds of 10 to 20 mph with gusts up 
to around 25 mph will also cause some blowing snow, which of 
course will be the worst when there is falling snow. With rates 
lessening into this afternoon and evening, the visibility 
reduction will not be as low.

Amounts will be the highest north of Highway 20 up to around
Highway 18 with a quick drop off in amounts to the south toward
Interstate 80 and to the north toward the Iowa Minnesota border.
As the precipitation diminishes later in the afternoon into early
this evening, there may also be freezing drizzle mixed in at
times generally along and south of Highway 30.

IAZ005-015>017-023>027-033>038-282330-
/O.CON.KDMX.WS.W.0002.000000T0000Z-230129T0300Z/
Kossuth-Palo Alto-Hancock-Cerro Gordo-Pocahontas-Humboldt-Wright-
Franklin-Butler-Sac-Calhoun-Webster-Hamilton-Hardin-Grundy-
Including the cities of Algona, Emmetsburg, Garner, Britt, 
Kanawha, Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, 
Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, 
Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington,
Allison, Dumont, Sac City, Lake View, Odebolt, Wall Lake, 
Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, 
Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, 
Grundy Center, Reinbeck, Conrad, Dike, and Wellsburg
930 AM CST Sat Jan 28 2023

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 7 
  inches, with locally higher amounts possible.

* WHERE...Much of north central Iowa.

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

* IMPACTS...Plan on snow covered roads and slippery conditions. 
  Sustained winds of 10 to 20 mph with gusts up to around 25 mph 
  could cause significantly reduced visibility.

* ADDITIONAL DETAILS...Cold wind chills as low as 10 to 15 below 
  zero could cause frostbite on exposed skin in prolonged 
  exposure.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IAZ004-006-007-028-039-044>050-282330-
/O.CON.KDMX.WW.Y.0003.000000T0000Z-230129T0300Z/
Emmet-Winnebago-Worth-Bremer-Black Hawk-Crawford-Carroll-Greene-
Boone-Story-Marshall-Tama-
Including the cities of Estherville, Forest City, Lake Mills, 
Northwood, Manly, Waverly, Waterloo, Cedar Falls, Denison, 
Carroll, Jefferson, Boone, Ames, Marshalltown, Tama, Toledo, 
Traer, Dysart, and Gladbrook
930 AM CST Sat Jan 28 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Snow expected, with perhaps freezing drizzle. Total 
  snow accumulations of 2 to 4 inches, though 4 to near 6 inches 
  around Highway 20 to around Highway 3. Ice accumulations of a 
  light glaze.

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

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

* IMPACTS...Plan on snow covered roads and slippery conditions. 
  Sustained winds of 10 to 20 mph with gusts up to around 25 mph 
  could cause reduced visibility.

* ADDITIONAL DETAILS... Cold wind chills as low as 10 to 15 
  below zero could cause frostbite on exposed skin in prolonged 
  exposure. A brief period of freezing drizzle may follow the 
  snowfall along the Highway 30 corridor, which may prolong 
  travel difficulties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

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

&&

$$

For more information from the National Weather Service visit
http://weather.gov/desmoines
016 
WWUS43 KDMX 282006
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
206 PM CST Sat Jan 28 2023

...Light Snow Continues Over Northern Half of Iowa This Evening, 
Bitter Cold Overnight...

Light falling snow and patchy blowing snow will linger into the
evening with additional accumulations of 1 to 2 inches through 
the highway 20 corridor and lesser amounts north and south.

Cold air settles in overnight with wind chills dropping to -20 or
colder for much of the area.

IAZ005-015>017-023>027-033>038-290415-
/O.NEW.KDMX.WC.Y.0001.230129T0600Z-230129T1700Z/
/O.CON.KDMX.WS.W.0002.000000T0000Z-230129T0300Z/
Kossuth-Palo Alto-Hancock-Cerro Gordo-Pocahontas-Humboldt-Wright-
Franklin-Butler-Sac-Calhoun-Webster-Hamilton-Hardin-Grundy-
Including the cities of Algona, Emmetsburg, Garner, Britt, 
Kanawha, Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, 
Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, 
Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington,
Allison, Dumont, Sac City, Lake View, Odebolt, Wall Lake, 
Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, 
Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, 
Grundy Center, Reinbeck, Conrad, Dike, and Wellsburg
206 PM CST Sat Jan 28 2023

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...
...WIND CHILL ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 11 AM
CST SUNDAY...

* WHAT...For the Winter Storm Warning, additional snow 
  accumulations of up to one inch. For the Wind Chill Advisory, 
  very cold wind chills expected. Wind chills as low as 30 below 
  zero.

* WHERE...Northern Iowa.

* WHEN...For the Winter Storm Warning, until 9 PM CST this 
  evening. For the Wind Chill Advisory, from midnight tonight to 
  11 AM CST Sunday.

* IMPACTS...Plan on slippery road conditions. Patchy blowing snow
  could significantly reduce visibility. The cold wind chills
  could cause frostbite on exposed skin in as little as 30
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

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

&&

$$

IAZ004-006-007-044>049-290415-
/O.NEW.KDMX.WC.Y.0001.230129T0600Z-230129T1700Z/
/O.CON.KDMX.WW.Y.0003.000000T0000Z-230129T0300Z/
Emmet-Winnebago-Worth-Crawford-Carroll-Greene-Boone-Story-
Marshall-
Including the cities of Estherville, Forest City, Lake Mills, 
Northwood, Manly, Denison, Carroll, Jefferson, Boone, Ames, 
and Marshalltown
206 PM CST Sat Jan 28 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...
...WIND CHILL ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 11 AM
CST SUNDAY...

* WHAT...For the Winter Weather Advisory, additional snow 
  accumulations of up to one inch. For the Wind Chill Advisory, 
  very cold wind chills expected. Wind chills as low as 25 below 
  zero.

* WHERE...Northern Iowa.

* WHEN...For the Winter Weather Advisory, until 9 PM CST this 
  evening. For the Wind Chill Advisory, from midnight tonight to 
  11 AM CST Sunday.

* IMPACTS...Plan on slippery road conditions. Patchy blowing snow
  could significantly reduce visibility. The cold wind chills
  could cause frostbite on exposed skin in as little as 30
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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

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

&&

$$

IAZ057>060-070>072-290415-
/O.NEW.KDMX.WC.Y.0001.230129T0600Z-230129T1700Z/
Audubon-Guthrie-Dallas-Polk-Cass-Adair-Madison-
Including the cities of Audubon, Exira, Guthrie Center, Panora, 
Bayard, Casey, Perry, Waukee, Adel, Des Moines, Atlantic, 
Greenfield, Stuart, Adair, Fontanelle, Winterset, and Earlham
206 PM CST Sat Jan 28 2023

...WIND CHILL ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 11 AM
CST SUNDAY...

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

* WHERE...Central Iowa.

* WHEN...From midnight tonight to 11 AM CST Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

IAZ028-039-050-290300-
/O.CON.KDMX.WW.Y.0003.000000T0000Z-230129T0300Z/
Bremer-Black Hawk-Tama-
Including the cities of Waverly, Waterloo, Cedar Falls, Tama, 
Toledo, Traer, Dysart, and Gladbrook
206 PM CST Sat Jan 28 2023

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...

* WHAT...Snow expected, with additional accumulations this evening
  of 1 to 2 inches.

* WHERE...Portions of northwest Iowa.

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

* IMPACTS...Plan on snow covered roads and slippery conditions. 
  Sustained winds of 10 to 20 mph with gusts up to around 25 mph 
  could cause reduced visibility.

* ADDITIONAL DETAILS... Cold wind chills as low as 10 to 15 below
  zero could cause frostbite on exposed skin in prolonged
  exposure. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

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

&&

$$

For more information from the National Weather Service visit
http://weather.gov/desmoines
238 
WWUS43 KDMX 290255
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
855 PM CST Sat Jan 28 2023

...Light Snow Continues Over the Northern Half of Iowa Tonight, 
then Bitter Cold Overnight...

Light falling snow and areas of blowing snow will linger into
the night across the northern half of Iowa with additional 
accumulations of an inch or less. Cold air will also continue to
settle in overnight with wind chills dropping into the teens and
20s below zero.

IAZ005-015>017-023>027-033>038-291100-
/O.CAN.KDMX.WS.W.0002.000000T0000Z-230129T0300Z/
/O.EXB.KDMX.WW.Y.0003.000000T0000Z-230129T0600Z/
/O.CON.KDMX.WC.Y.0001.230129T0600Z-230129T1700Z/
Kossuth-Palo Alto-Hancock-Cerro Gordo-Pocahontas-Humboldt-Wright-
Franklin-Butler-Sac-Calhoun-Webster-Hamilton-Hardin-Grundy-
Including the cities of Algona, Emmetsburg, Garner, Britt, 
Kanawha, Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, 
Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, 
Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington,
Allison, Dumont, Sac City, Lake View, Odebolt, Wall Lake, 
Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, 
Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, 
Grundy Center, Reinbeck, Conrad, Dike, and Wellsburg
855 PM CST Sat Jan 28 2023

...WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT CST TONIGHT...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
11 AM CST SUNDAY...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...For the Winter Weather Advisory, snow and blowing snow. 
  Additional snow accumulations of an inch or less. For the Wind 
  Chill Advisory, very cold wind chills expected. Wind chills as 
  low as 30 below zero by Sunday. 

* WHERE...Portions of northern Iowa.

* WHEN...For the Winter Weather Advisory, until midnight CST 
  tonight. For the Wind Chill Advisory, from midnight tonight to 
  11 AM CST Sunday.

* IMPACTS...Plan on snow covered and slippery road conditions at
  times. Blowing snow could reduce visibility. The cold wind 
  chills could cause frostbite on exposed skin in as little as 30 
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IAZ004-006-007-044>049-291100-
/O.EXT.KDMX.WW.Y.0003.000000T0000Z-230129T0600Z/
/O.CON.KDMX.WC.Y.0001.230129T0600Z-230129T1700Z/
Emmet-Winnebago-Worth-Crawford-Carroll-Greene-Boone-Story-
Marshall-
Including the cities of Estherville, Forest City, Lake Mills, 
Northwood, Manly, Denison, Carroll, Jefferson, Boone, Ames, 
and Marshalltown
855 PM CST Sat Jan 28 2023

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
11 AM CST SUNDAY...

* WHAT...For the Winter Weather Advisory, snow and blowing snow.
  Additional snow accumulations of an inch or less. For the Wind
  Chill Advisory, very cold wind chills expected. Wind chills as
  low as 20 below zero.

* WHERE...Portions of central Iowa.

* WHEN...For the Winter Weather Advisory, until midnight CST 
  tonight. For the Wind Chill Advisory, from midnight tonight to 
  11 AM CST Sunday.

* IMPACTS...Plan on slippery and snow covered road conditions.
  Blowing snow could reduce visibility. The cold wind chills 
  could cause frostbite on exposed skin in as little as 30 
  minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

IAZ028-039-050-290600-
/O.EXT.KDMX.WW.Y.0003.000000T0000Z-230129T0600Z/
Bremer-Black Hawk-Tama-
Including the cities of Waverly, Waterloo, Cedar Falls, Tama, 
Toledo, Traer, Dysart, and Gladbrook
855 PM CST Sat Jan 28 2023

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* WHAT...Snow and blowing snow. Additional snow accumulations of
  an inch or less.

* WHERE...Portions of northeast Iowa.

* WHEN...Until midnight CST tonight.

* IMPACTS...Plan on slippery and snow covered road conditions at
  times. Patchy blowing snow could significantly reduce 
  visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

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

&&

$$

IAZ057>060-070>072-291100-
/O.CON.KDMX.WC.Y.0001.230129T0600Z-230129T1700Z/
Audubon-Guthrie-Dallas-Polk-Cass-Adair-Madison-
Including the cities of Audubon, Exira, Guthrie Center, Panora, 
Bayard, Casey, Perry, Waukee, Adel, Des Moines, Atlantic, 
Greenfield, Stuart, Adair, Fontanelle, Winterset, and Earlham
855 PM CST Sat Jan 28 2023

...WIND CHILL ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
11 AM CST SUNDAY...

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

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

* WHEN...From midnight tonight to 11 AM CST Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

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

Small

What forecasters said that day

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

NWS Des Moines, IA wrote its last area forecast discussion before this winter storm warning went out at Jan 26, 11:43 PM CST, 3 hours 25 minutes earlier.

Area forecast discussion, Jan 26, 11:43 PM CST, 3 hours 25 minutes before
Area Forecast Discussion
National Weather Service Des Moines IA
1143 PM CST Thu Jan 26 2023

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

.DISCUSSION.../Tonight through Thursday/
Issued at 301 PM CST Thu Jan 26 2023

Key Messages:

Forecast Highlights:

-Quiet tonight with warming through the overnight
-Light snow moving across the state late tonight through Friday
afternoon
-Accumulating snow expected late Friday through Saturday with better
forcing though location remains a big question
-Cold air returning late Saturday through next week, with wind
chills lowest north

Quiet but chilly weather continued through the morning and into this
afternoon, with plenty of sunshine across much of Iowa with high
pressure currently centered over southeastern Nebraska sliding
east/southeast. Clouds continue to slowly push out of eastern Iowa,
which have allowed for temperatures to be a bit warmer than the rest
of the state in the teens to low 20s. Temperatures otherwise have
slowly risen through the teens for the remainder of the state, with
winds out of the west. The remainder of the afternoon to evening
should remain largely on the quiet side, though cloud cover will
start to expand from west to east ahead of a shortwave and surface
clipper system moving down from southern Canada into the Upper
Midwest. Shifting winds turning southwesterly are also expected
ahead of this system, which is expected to increase temperatures
through the night into Friday morning allowing for a non-diurnal
trend into the 20s and 30s, warmest south.

As moisture advection increases with WAA allowing for good
saturation in the low to mid levels, favorable conditions for lift
and snow production are expected. Guidance generally depicts snow
arriving into western Iowa late tonight, pushing east in a north to
south oriented band through Friday. Guidance overall paints lower
end snow totals across the state, with highest accumulations
generally over northern Iowa before exiting the region Friday
afternoon. There are some differences however between models on
exact snow accumulations, where the NAM and RAP suggest higher
totals nearing 1-2 inches roughly north of Highway 20, with less
than an inch further south. The HRRR, as well as GFS deterministic
and its ensembles however are on a slightly lower trend with the
newest guidance, favoring accumulations largely below an inch across
all of Iowa but with highest amounts to the north. Therefore have
decided not to make any major changes to the forecast as this should
be relatively quick hitting with most areas seeing minor impacts.
Lingering light snow to flurries may continue into early afternoon
before drying out for the remainder of the day. Hazardous driving
conditions are possible for the Friday morning commute, especially
north with slick roads. Periods of blowing snow are also possible as
winds shift northwesterly with gusts generally in the 20 to 25 mph
range, which may allow for reduced visibilities at times.

After a short lived dry period, another surface low sliding east
into the central plains is expected to bring in a better chance for
accumulating snowfall late Friday night through Saturday. Looking at
the features of this system, WAA with increasing saturation in the
column and steepening lapse rates is expected, with mid level
frontogenesis increasing especially through Saturday morning along a
west to east oriented band. Model guidance continues to differ on
the location where the strongest forcing will setup. The RAP and GFS
guidance favors more of a central to southern Iowa setup with
widespread 2-6 inch accumulations across the area, and slightly
lower values further north. On the other side of the coin, the NAM
and HRRR guidance has a strong signal of the fgen zone setting up
over northern into central Iowa, along and north of I-80 with higher
accumulations generally in the 2-6 inch range. Further analysis into
the Euro ensembles places the higher totals also mainly along and
north of I-80, which after considering all these differing solutions
have decided to continue to reflect this trend in the forecast.
Given the overall differences however, cannot rule out further
wiggles in the location of the strongest forcing and therefore
higher snow totals, so it is possible that slight adjustments will
need to be made. Headlines therefore have been held off for now and
will continue to assess these details over the next few forecast
packages. No major concerns are in place for any p-type changes as
temperatures will largely remain below freezing, with the exception
of far southern Iowa where less of the concern for precipitation is
currently in place. Slightly higher SLRs continue to be suggested
among the model members, generally slightly higher than climo in the
15:1 to 20:1 range Saturday. This lighter snow paired with breezy
winds generally in the 20 to 30 mph range will allow for blowing
snow to potentially be a concern as well, but regardless snow
accumulations will again lead to hazardous driving conditions so
extra caution is needed if traveling. Lingering snow may continue
into early Sunday, especially further east as the system slowly
pushes away from the region.

Much colder air moving descending down from the north is expected to
follow as high pressure settles across the region later Saturday
into rest of weekend and through early next week. Temperatures
falling below zero across the northwestern half of the state, and
in the single digits further southeast. This colder air will be
the main story into next week, as lows generally trend in the
single digits to teens below zero and highs in the single digits,
especially Tuesday. Conditions look to be mainly on the quieter
side otherwise, though guidance does indicate low chances for
another round of precipitation Tuesday afternoon and evening with
a system clipping mainly the southeastern half of the state.
Specific details on this are not well known given timing out from
this system but will be more refined over the next several days.

&&

.AVIATION.../For the 06Z TAFS through 06Z Friday night/
Issued at 1142 PM CST Thu Jan 26 2023

Main concern will be the light snow band tracking over the area
through 14z. The main area is still back near FSD at 0535z and
should make it to ALO by 11-13z. Expecting IFR cigs and very
possible 1/2sm vsby as the band passes through MCW/ALO. Lesser
impacts expected at FOD,DSM and OTM for snow. Winds pick up aft
15z and some potential during the snow and aft 15z of BLSN;
especially MCW and potentially FOD and ALO. Later in period aft
18z a slight improvement in cigs prior to approaching Sat
snow. /rev

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

DISCUSSION...Bury/Cogil
AVIATION...REV
Hazardous weather outlook, Jan 26, 3:35 PM CST, 11 hours 33 minutes before
Hazardous Weather Outlook
National Weather Service Des Moines IA
335 PM CST Thu Jan 26 2023

IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-272145-
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-
335 PM CST Thu Jan 26 2023

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...Friday through Wednesday

Light snow will impact the Friday morning commute, especially
across northern Iowa.

A more widespread and impactful snowfall is expected Saturday with
the heavier snowfall at this time focused across portions of
central into northern Iowa.

Bitter cold is expected at times from this weekend through next
week. Wind chills of 20 below or colder are forecast each morning
beginning Sunday through Wednesday; especially north of Highway
30.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed, however snowfall reports
are always appreciated.

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 27, 3:08 AM CSTWinter Weather AdvisoryDMXBlack Hawk, Boone, Bremer, Butler, Calhoun, Carroll and 21 more45 hr

Nearby

Winter Storm Warnings in Iowa, 2023Every winter storm warning in 2023

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.