Alert archive / Iowa / Winter Storm Warnings in 2018

Winter Storm Warning 11, NWS Des Moines, IA

November 30, 201813 counties in Iowa

NWS Des Moines, IA issued this winter storm warning at Nov 30, 2018, 3:18 PM CST for 13 counties in Iowa. It took effect at Dec 1, 2018, 3:00 AM CST. It was in force for 33 hr. 18 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
Nov 30, 2018, 3:18 PM CST (21:18 UTC)
In effect from
Dec 1, 2018, 3:00 AM CST
Expired
Dec 2, 2018, 12:00 PM CST
In force
33 hr
Issued by
NWS Des Moines, IA

Counties Audubon County, IA, Carroll County, IA, Cass County, IA, Cerro Gordo County, IA, Crawford County, IA, Emmet County, IA, Hancock County, IA, Humboldt County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA, Winnebago County, IA, Worth County, IA

The radar

The Des Moines radar (KDMX), 120 km from the middle of the area, began a volume at 21:24 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
Dec 1, 11:15 AM CSTFREEZING RAIN 0.1Humboldt, IAVIA SOCIAL MEDIA. ICE AND GUSTY WINDS RESULTED IN 6-7 LARGE BRANCHES FALLING FROM TREES.
Dec 1, 12:15 PM CSTSNOW 2.5Emmetsburg, IAVIA SOCIAL MEDIA.
Dec 2, 2:30 AM CSTSNOW 2Audubon, IA
Dec 2, 2:30 AM CSTSNOW 3Denison, IA
Dec 2, 2:30 AM CSTSNOW 5Carroll, IA
Dec 2, 5:06 AM CSTSNOW 1.51 Nne Mason City, IA
Dec 2, 6:56 AM CSTSNOW 2.51 Nnw Clear Lake, IA
Dec 2, 7:00 AM CSTSNOW 2Mason City, IA24 HOUR TOTAL.
Dec 2, 7:00 AM CSTSNOW 2Massena, IA
Dec 2, 7:00 AM CSTSNOW 2.25 Ssw Rodman, IA24 HOUR TOTAL.
Dec 2, 7:00 AM CSTSNOW 2.7Garner, IA24 HOUR TOTAL.
Dec 2, 7:00 AM CSTSNOW 41 Ese Carroll, IA24 HOUR TOTAL.
Dec 2, 7:00 AM CSTSNOW 5.2Manning, IA24 HOUR TOTAL.
Dec 2, 7:00 AM CSTSNOW 7.84 Wnw Swea City, IA24 HOUR TOTAL.
Dec 2, 8:00 AM CSTSNOW 1.62 Nne Atlantic, IA24 HOUR TOTAL.
Dec 2, 8:00 AM CSTSNOW 2.81 Sse Audubon, IA
Dec 2, 8:00 AM CSTSNOW 32 Ne Denison, IA24 HOUR TOTAL.
Dec 2, 8:12 AM CSTSNOW 2.5Garner, IATRAINED SPOTTER IN GARNER MEASURED 2.5 INCHES OF SNOW. 0.80 INCHES MELTED EQUIVALENT. REPORT 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

Omaha, NE (KOAX), launched 12:00Z, 9.3 hours before the alert went out and 227 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, Omaha, NE at 12:00Z on 2018-11-30Temperature 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, Omaha, NE at 12:00Z on 2018-11-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 square meters per square second.1939587897117Sfc1 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
679 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
225 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

850 
WWUS43 KDMX 302118
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
318 PM CST Fri Nov 30 2018

...Prolonged Winter Precipitation This Weekend...

.A winter storm system will impact Iowa from tonight into Sunday,
spreading rain, ice, and snow across the state. Precipitation will
begin from south to north as light rain and freezing rain tonight,
then change to snow from northwest to southeast on Saturday 
afternoon and Saturday night before ending late Sunday. Moderate 
to heavy snow accumulations are possible over northern Iowa west 
of Interstate 35. The snow may initially be very heavy and wet and
may cause tree damage and subsequent power outages. In addition, 
gusty northeast winds will cause areas of blowing snow that will 
reduce visibility. This wind also may enhance the potential for 
tree damage where the heavy and wet snow occurs.

IAZ004>007-015>017-023-024-010530-
/O.UPG.KDMX.WS.A.0011.181201T0300Z-181202T1800Z/
/O.NEW.KDMX.WS.W.0011.181201T0900Z-181202T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-
Including the cities of Estherville, Algona, Forest City, 
Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha,
Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, and Humboldt
318 PM CST Fri Nov 30 2018

...WINTER STORM WARNING IN EFFECT FROM 3 AM SATURDAY TO NOON CST
SUNDAY...

* WHAT...Heavy snow and blowing snow expected, with light freezing
  rain also possible. Total snow accumulations of 5 to 8 inches 
  and ice accumulations of a light glaze expected. Winds gusting 
  as high as 35 mph at times.

* WHERE...Northern Iowa, especially west of Interstate 35 and
  north of Highway 20.

* WHEN...From 3 AM Saturday to noon CST Sunday. Light freezing
  rain possible early Saturday morning, with snow likely by
  Saturday afternoon and into Sunday.

* ADDITIONAL DETAILS...Travel could be very difficult. Patchy
  blowing snow could significantly reduce visibility. Tree damage
  and power outages are also possible with the strong winds and
  heavy, wet snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible. 

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

&&

$$

IAZ025>028-010530-
/O.UPG.KDMX.WS.A.0011.181201T0300Z-181202T1800Z/
/O.NEW.KDMX.WW.Y.0027.181201T0300Z-181201T1400Z/
Wright-Franklin-Butler-Bremer-
Including the cities of Eagle Grove, Clarion, Belmond, Hampton, 
Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison,
Dumont, and Waverly
318 PM CST Fri Nov 30 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO
8 AM CST SATURDAY...

* WHAT...Light freezing rain expected, with accumulations of a
  light glaze leading to some slick roads.

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

* WHEN...From 9 PM this evening to 8 AM CST Saturday.

* ADDITIONAL DETAILS...A light glaze will form on some roadways
  and elevated surfaces. Patchy road icing could lead to hazardous
  travel conditions at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Expect slippery
roads and limited visibilities, and use caution while driving. 

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

&&

$$

IAZ033>037-044>046-010530-
/O.UPG.KDMX.WS.A.0011.181201T0000Z-181202T1800Z/
/O.NEW.KDMX.WW.Y.0027.181201T0300Z-181201T1400Z/
Sac-Calhoun-Webster-Hamilton-Hardin-Crawford-Carroll-Greene-
Including the cities of Sac City, Lake View, Odebolt, Wall Lake, 
Schaller, Early, Rockwell City, Manson, Lake City, Pomeroy, 
Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Denison, 
Carroll, and Jefferson
318 PM CST Fri Nov 30 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO
8 AM CST SATURDAY...

* WHAT...Light freezing rain expected, with accumulations of a
  light glaze leading to some slick roads.

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

* WHEN...From 9 PM this evening to 8 AM CST Saturday.

* ADDITIONAL DETAILS...A light glaze will form on some roadways
  and elevated surfaces. Patchy road icing could lead to hazardous
  travel conditions at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Expect slippery
roads and limited visibilities, and use caution while driving. 

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

&&

$$

IAZ038-047>049-057-058-010530-
/O.NEW.KDMX.WW.Y.0027.181201T0300Z-181201T1400Z/
Grundy-Boone-Story-Marshall-Audubon-Guthrie-
Including the cities of Grundy Center, Reinbeck, Conrad, Dike, 
Wellsburg, Boone, Ames, Marshalltown, Audubon, Exira, 
Guthrie Center, Panora, Bayard, and Casey
318 PM CST Fri Nov 30 2018

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO
8 AM CST SATURDAY...

* WHAT...Light freezing rain expected, with accumulations of a
  light glaze leading to some slick roads.

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

* WHEN...From 9 PM this evening to 8 AM CST Saturday.

* ADDITIONAL DETAILS...A light glaze will form on some roadways
  and elevated surfaces. Patchy road icing could lead to hazardous
  travel conditions at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of freezing rain
will cause travel difficulties. Expect slippery roads. Slow down
and use caution while driving. 

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://www.weather.gov/desmoines
11 follow-up statements
381 
WWUS43 KDMX 010348
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
948 PM CST Fri Nov 30 2018

...Prolonged Winter Precipitation This Weekend...

.A winter storm system will impact Iowa from tonight into Sunday,
spreading rain, freezing rain, and snow across the state. 
Precipitation will begin from south to north as light rain and 
freezing rain tonight, then change to snow from northwest to 
southeast on Saturday afternoon and Saturday night before ending 
late Sunday. Moderate to heavy snow accumulations are possible 
over northern Iowa west of Interstate 35. The snow may initially 
be very heavy and wet and may cause tree damage and subsequent 
power outages. In addition, gusty northeast winds will cause areas
of blowing snow that will reduce visibility. This wind also may 
enhance the potential for tree damage where the heavy and wet snow
occurs.

IAZ004>007-015>017-023-024-011200-
/O.CON.KDMX.WS.W.0011.181201T0900Z-181202T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-
Including the cities of Estherville, Algona, Forest City, 
Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha,
Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, and Humboldt
948 PM CST Fri Nov 30 2018

...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 AM SATURDAY TO
NOON CST SUNDAY...

* WHAT...From 3 AM Saturday to noon CST Sunday. Light freezing
  rain possible early Saturday morning, with snow likely by
  Saturday afternoon and into Sunday. Wind gusts may exceed 45 mph
  on Saturday.

* WHERE...Northern Iowa, especially west of Interstate 35 and
  north of Highway 20.

* WHEN...From 3 AM Saturday to noon CST Sunday. Light freezing
  rain possible early Saturday morning, with snow likely by
  Saturday afternoon and into Sunday.

* ADDITIONAL DETAILS...Travel could be very difficult. Patchy
  blowing snow could significantly reduce visibility. Tree damage
  and power outages are also possible with the strong winds and
  heavy, wet snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible. 

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

&&

$$

IAZ025>028-033>038-044>049-057-058-011200-
/O.CON.KDMX.WW.Y.0027.000000T0000Z-181201T1400Z/
Wright-Franklin-Butler-Bremer-Sac-Calhoun-Webster-Hamilton-Hardin-
Grundy-Crawford-Carroll-Greene-Boone-Story-Marshall-Audubon-
Guthrie-
Including the cities of Eagle Grove, Clarion, Belmond, Hampton, 
Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison,
Dumont, Waverly, 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, Wellsburg, Denison, 
Carroll, Jefferson, Boone, Ames, Marshalltown, Audubon, Exira, 
Guthrie Center, Panora, Bayard, and Casey
948 PM CST Fri Nov 30 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 AM CST
SATURDAY...

* WHAT...Light freezing rain possible tonight, with light ice
  accumulations leading to some slick roads. Wind gusts in excess
  of 45 mph are possible late tonight into early Saturday morning.

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

* WHEN...Until 8 AM CST Saturday.

* ADDITIONAL DETAILS...A light glaze will form on some roadways
  and elevated surfaces. Patchy road icing could lead to hazardous
  travel conditions at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Expect slippery
roads and limited visibilities, and use caution while driving. 

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://www.weather.gov/desmoines
962 
WWUS43 KDMX 010945
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
345 AM CST Sat Dec 1 2018

...Prolonged Winter Precipitation This Weekend...

.A winter storm system will impact Iowa today into Sunday, 
spreading rain, freezing rain, and snow across the state. 
An area of mixed freezing rain, rain and snow will continue this
morning, with a change to snow from northwest to southeast
expected this afternoon. The snow will continue tonight and taper
off late Sunday. Moderate to heavy snow accumulations are 
possible over northern Iowa west of Interstate 35. The snow may 
initially be very heavy and wet and may cause tree damage and 
subsequent power outages. In addition, gusty northeast winds will 
cause areas of blowing snow that will reduce visibility. This wind
also may enhance the potential for tree damage where the heavy 
and wet snow occurs.

IAZ004>007-015>017-023-024-011800-
/O.CON.KDMX.WS.W.0011.000000T0000Z-181202T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-
Including the cities of Estherville, Algona, Forest City, 
Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha,
Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, and Humboldt
345 AM CST Sat Dec 1 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST SUNDAY...

* WHAT...Light freezing rain mixing with snow this morning, with
  snow and some blowing snow likely by this afternoon into Sunday.
  Wind gusts may exceed 45 mph today.

* WHERE...Northern Iowa, especially west of Interstate 35 and 
  north of Highway 20.

* WHEN...Now until noon CST Sunday. Light freezing rain/snow mix
  this morning, with snow likely this afternoon into Sunday.

* ADDITIONAL DETAILS...Travel could be very difficult. Icy roads
  expected this morning. Snowfall and patchy blowing snow could
  significantly reduce visibility. Tree damage and power outages 
  are also possible with the strong winds and heavy, wet snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible.

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

&&

$$

IAZ025>028-033>038-044>049-057-058-011800-
/O.EXT.KDMX.WW.Y.0027.000000T0000Z-181202T1800Z/
Wright-Franklin-Butler-Bremer-Sac-Calhoun-Webster-Hamilton-Hardin-
Grundy-Crawford-Carroll-Greene-Boone-Story-Marshall-Audubon-
Guthrie-
Including the cities of Eagle Grove, Clarion, Belmond, Hampton, 
Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison,
Dumont, Waverly, 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, Wellsburg, Denison, 
Carroll, Jefferson, Boone, Ames, Marshalltown, Audubon, Exira, 
Guthrie Center, Panora, Bayard, and Casey
345 AM CST Sat Dec 1 2018

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL NOON CST SUNDAY...

* WHAT...Light freezing rain early this morning, with light ice
  accumulations leading to slick, icy roads. Wind gusts in excess
  of 45 mph are possible today. A period of rain is expected by
  late morning into this afternoon, with rain changing to snow by
  this evening into tonight and continuing into Sunday.

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

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...A light glaze of ice on some roads and
  elevated surfaces. Patchy road icing could lead to hazardous
  travel conditions at times. Winter impacts will diminish some
  toward late morning into this afternoon as temperatures warm
  above freezing. However as snow begins tonight into Sunday,
  slick, snow-covered roads can be expected with difficult travel
  possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Expect slippery
roads and limited visibilities, and use caution while driving.

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://www.weather.gov/desmoines
887 
WWUS43 KDMX 011457
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
857 AM CST Sat Dec 1 2018

...Prolonged Winter Precipitation This Weekend...

.A winter storm system will impact Iowa today into Sunday,
spreading rain, freezing rain, and snow across the state. An area
of mixed freezing rain, rain and snow will continue this morning,
with a change to snow from northwest to southeast expected this
afternoon. The snow will continue tonight and taper off late
Sunday. 

IAZ004>007-015>017-023-024-012300-
/O.CON.KDMX.WS.W.0011.000000T0000Z-181202T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-
Including the cities of Estherville, Algona, Forest City, 
Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha,
Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, and Humboldt
857 AM CST Sat Dec 1 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST SUNDAY...

* WHAT...Light freezing rain mixing with snow this morning, with
  snow and blowing snow likely by this afternoon into Sunday. 6 to
  10 inches of heavy wet snow is expected by midday Sunday. Wind 
  gusts may also exceed 45 mph today as well.

* WHERE...Northern Iowa, especially west of Interstate 35 and 
  north of Highway 20.

* WHEN...Now until noon CST Sunday. Light freezing rain/snow mix 
  this morning, with snow likely this afternoon into Sunday.

* ADDITIONAL DETAILS...Travel could be very difficult. Icy roads 
  expected this morning. Snowfall and patchy blowing snow could 
  significantly reduce visibility. Tree damage and power outages 
  are also possible with the strong winds and heavy, wet snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible.

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

&&

$$

IAZ025>028-033>038-044>049-057-058-012300-
/O.CON.KDMX.WW.Y.0027.000000T0000Z-181202T1800Z/
Wright-Franklin-Butler-Bremer-Sac-Calhoun-Webster-Hamilton-Hardin-
Grundy-Crawford-Carroll-Greene-Boone-Story-Marshall-Audubon-
Guthrie-
Including the cities of Eagle Grove, Clarion, Belmond, Hampton, 
Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison,
Dumont, Waverly, 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, Wellsburg, Denison, 
Carroll, Jefferson, Boone, Ames, Marshalltown, Audubon, Exira, 
Guthrie Center, Panora, Bayard, and Casey
857 AM CST Sat Dec 1 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST
SUNDAY...

* WHAT...A period of freezing rain is expected this morning before
  changing to all rain by late morning across the advisory area.
  Periods of rain are expected into the afternoon changing to snow
  this evening into tonight. The snow will persist into Sunday
  with total accumulations of 2 to 6 inches. Wind gusts in excess
  of 45 mph are possible today as well.
  

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

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...A light glaze of ice on some roads and 
  elevated surfaces. Patchy road icing could lead to hazardous 
  travel conditions at times. Winter impacts will diminish some 
  toward late morning into this afternoon as temperatures warm 
  above freezing. However as snow begins tonight into Sunday, 
  slick, snow-covered roads can be expected with difficult 
  travel possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Expect slippery
roads and limited visibilities, and use caution while driving.

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://www.weather.gov/desmoines
349 
WWUS43 KDMX 011645
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
1045 AM CST Sat Dec 1 2018

...Prolonged Winter Precipitation This Weekend...

.A winter storm system will impact Iowa today into Sunday,
spreading rain, freezing rain, and snow across the state. An area
of mixed freezing rain, rain and snow will continue this morning,
with a change to snow from northwest to southeast expected this
afternoon. The snow will continue tonight and taper off late
Sunday.

IAZ004>007-015>017-023-024-020045-
/O.CON.KDMX.WS.W.0011.000000T0000Z-181202T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-
Including the cities of Estherville, Algona, Forest City, 
Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha,
Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, and Humboldt
1045 AM CST Sat Dec 1 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST SUNDAY...

* WHAT...A mixture of sleet, freezing rain and snow is expected
  this morning, with snow and blowing snow likely by this
  afternoon into Sunday. 6 to 10 inches of heavy wet snow is
  expected by midday Sunday. Wind gusts may also exceed 40 mph 
  today as well.

* WHERE...Northern Iowa, especially west of Interstate 35 and 
  north of Highway 20.

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...Travel could be very difficult. Icy roads 
  expected this morning. Snowfall and patchy blowing snow could 
  significantly reduce visibility. Tree damage and power outages 
  are also possible with the strong winds and heavy, wet snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible.

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

&&

$$

IAZ025>028-033>038-044>049-057-058-020045-
/O.CON.KDMX.WW.Y.0027.000000T0000Z-181202T1800Z/
Wright-Franklin-Butler-Bremer-Sac-Calhoun-Webster-Hamilton-Hardin-
Grundy-Crawford-Carroll-Greene-Boone-Story-Marshall-Audubon-
Guthrie-
Including the cities of Eagle Grove, Clarion, Belmond, Hampton, 
Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison,
Dumont, Waverly, 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, Wellsburg, Denison, 
Carroll, Jefferson, Boone, Ames, Marshalltown, Audubon, Exira, 
Guthrie Center, Panora, Bayard, and Casey
1045 AM CST Sat Dec 1 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST
SUNDAY...

* WHAT...A period of heavy snow is expected through midday before
  precipitation diminishes to light drizzle by this afternoon.
  Drizzle or very light rain are expected this afternoon changing
  to snow this evening into tonight. The snow will persist into
  Sunday with total accumulations of 2 to 6 inches. Wind gusts in
  excess of 40 mph are possible today as well.

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

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...A light glaze of ice on some roads and 
  elevated surfaces. Patchy road icing could lead to hazardous 
  travel conditions at times. Winter impacts will diminish some 
  toward late morning into this afternoon as temperatures warm 
  above freezing. However as snow begins tonight into Sunday, 
  slick, snow-covered roads can be expected with difficult 
  travel possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Expect slippery
roads and limited visibilities, and use caution while driving.

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://www.weather.gov/desmoines
109 
WWUS43 KDMX 011935
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
135 PM CST Sat Dec 1 2018

...Prolonged Winter Precipitation This Weekend...

.A winter storm system will impact Iowa today into Sunday,
spreading rain, freezing rain, and snow across the state. Most of
the precipitation is expected to change to snow by Sunday morning
before ending later in the day. 

IAZ004>007-015>017-023-024-020345-
/O.CON.KDMX.WS.W.0011.000000T0000Z-181202T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-
Including the cities of Estherville, Algona, Forest City, 
Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha,
Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, and Humboldt
135 PM CST Sat Dec 1 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST SUNDAY...

* WHAT...Periods of light snow mixed with rain is expected the
  remainder of this afternoon with periods of snow tonight into
  Sunday morning. 6 to 10 inches of heavy wet snow is expected by
  midday Sunday. Wind gusts may also exceed 40 mph today as well.

* WHERE...Northern Iowa, especially west of Interstate 35 and 
  north of Highway 20.

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...Travel could be very difficult. Icy roads 
  expected this morning. Snowfall and patchy blowing snow could 
  significantly reduce visibility. Tree damage and power outages 
  are also possible with the strong winds and heavy, wet snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible.

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

&&

$$

IAZ025>028-033>038-044>049-057-058-020345-
/O.CON.KDMX.WW.Y.0027.000000T0000Z-181202T1800Z/
Wright-Franklin-Butler-Bremer-Sac-Calhoun-Webster-Hamilton-Hardin-
Grundy-Crawford-Carroll-Greene-Boone-Story-Marshall-Audubon-
Guthrie-
Including the cities of Eagle Grove, Clarion, Belmond, Hampton, 
Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison,
Dumont, Waverly, 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, Wellsburg, Denison, 
Carroll, Jefferson, Boone, Ames, Marshalltown, Audubon, Exira, 
Guthrie Center, Panora, Bayard, and Casey
135 PM CST Sat Dec 1 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST
SUNDAY...

* WHAT...Drizzle or very light rain are expected this afternoon
  with a brief period of snow with any heavier showers. A
  transition to all snow is expected later tonight into Sunday
  morning before ending. Total accumulations of 2 to 6 inches is
  expected. Wind gusts in excess of 40 mph are possible today as 
  well.

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

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...Winter impacts will diminish some this
  afternoon as temperatures warm above freezing. However as snow 
  begins tonight into Sunday, slick, snow-covered roads can be 
  expected with difficult travel possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Expect slippery
roads and limited visibilities, and use caution while driving.

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://www.weather.gov/desmoines
749 
WWUS43 KDMX 012126
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
326 PM CST Sat Dec 1 2018

...Winter Storm to Persist into Sunday...

.A winter storm will continue to impact Iowa through Sunday
morning with areas of snow across about the northwest half of
Iowa. Blowing snow is also expected across northern Iowa as strong
winds persist overnight. 

IAZ004>007-015>017-023-024-020530-
/O.CON.KDMX.WS.W.0011.000000T0000Z-181202T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-
Including the cities of Estherville, Algona, Forest City, 
Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha,
Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, and Humboldt
326 PM CST Sat Dec 1 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST SUNDAY...

* WHAT...Periods of snow, mixed at times with rain this evening,
  are expected tonight into Sunday morning. Additional
  accumulations of 3 to 6 inches is expected with storm totals of
  5 to 10 inches with highest amounts in the northwest. Strong
  northeast winds will produce blowing snow as well.  

* WHERE...Northern Iowa, especially west of Interstate 35 and 
  north of Highway 20.

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...Travel could be very difficult. Snowfall
  and blowing snow could significantly reduce visibility. Tree 
  damage and power outages are also possible with the strong winds
  and heavy, wet snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible.

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

&&

$$

IAZ070-071-081-092-020530-
/O.EXA.KDMX.WW.Y.0027.000000T0000Z-181202T1800Z/
Cass-Adair-Adams-Taylor-
Including the cities of Atlantic, Greenfield, Stuart, Adair, 
Fontanelle, Corning, Bedford, Lenox, and New Market
326 PM CST Sat Dec 1 2018

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON CST SUNDAY...

* WHAT...Light rain is expected this evening, transitioning to
  snow overnight. The snow will persist into Sunday before ending.
  Total snow accumulations of 2 to 4 inches is expected.

* WHERE...West central into southwest Iowa.

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...As snow begins tonight into Sunday, roads
  will begin to refreeze with slick, snow-covered roads expected
  making travel difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving. 

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

&&

$$

IAZ025>028-033>038-044>049-057-058-020530-
/O.CON.KDMX.WW.Y.0027.000000T0000Z-181202T1800Z/
Wright-Franklin-Butler-Bremer-Sac-Calhoun-Webster-Hamilton-Hardin-
Grundy-Crawford-Carroll-Greene-Boone-Story-Marshall-Audubon-
Guthrie-
Including the cities of Eagle Grove, Clarion, Belmond, Hampton, 
Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison,
Dumont, Waverly, 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, Wellsburg, Denison, 
Carroll, Jefferson, Boone, Ames, Marshalltown, Audubon, Exira, 
Guthrie Center, Panora, Bayard, and Casey
326 PM CST Sat Dec 1 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST
SUNDAY...

* WHAT...Drizzle or very light rain are expected into this evening
  as temperatures remain just above freezing. Later this evening
  into early morning Sunday, a transition to all snow is expected
  with snow persisting into Sunday before ending. Total
  accumulations of 2 to 5 inches is expected.

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

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...As snow begins tonight into Sunday, roads
  will refreeze with slick, snow-covered roads expected making 
  travel difficult. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Expect slippery
roads and limited visibilities, and use caution while driving.

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://www.weather.gov/desmoines
648 
WWUS43 KDMX 020208
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
808 PM CST Sat Dec 1 2018

...Winter Storm to Persist into Sunday...

.A winter storm will continue to impact Iowa through Sunday
morning with areas of snow across about the northwest half of
Iowa. Blowing snow is also expected across northern Iowa as
strong winds persist overnight.

IAZ004>007-015>017-023-024-021015-
/O.CON.KDMX.WS.W.0011.000000T0000Z-181202T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-
Including the cities of Estherville, Algona, Forest City, 
Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha,
Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, and Humboldt
808 PM CST Sat Dec 1 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST SUNDAY...

* WHAT...Periods of snow, mixed at times with rain this evening, 
  are expected tonight into Sunday morning. Additional 
  accumulations of 3 to 6 inches is expected with storm totals 
  of 5 to 10 inches with highest amounts in the northwest. 
  Strong northeast winds will produce blowing snow as well. 

* WHERE...Northern Iowa, especially west of Interstate 35 and 
  north of Highway 20. 

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...Travel could be very difficult. Snowfall 
  and blowing snow could significantly reduce visibility. Tree 
  damage and power outages are also possible with the strong 
  winds and heavy, wet snow. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible.

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

&&

$$

IAZ025>028-033>038-044>049-057-058-070-071-081-092-021015-
/O.CON.KDMX.WW.Y.0027.000000T0000Z-181202T1800Z/
Wright-Franklin-Butler-Bremer-Sac-Calhoun-Webster-Hamilton-Hardin-
Grundy-Crawford-Carroll-Greene-Boone-Story-Marshall-Audubon-
Guthrie-Cass-Adair-Adams-Taylor-
Including the cities of Eagle Grove, Clarion, Belmond, Hampton, 
Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison,
Dumont, Waverly, 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, Wellsburg, Denison, 
Carroll, Jefferson, Boone, Ames, Marshalltown, Audubon, Exira, 
Guthrie Center, Panora, Bayard, Casey, Atlantic, Greenfield, 
Stuart, Adair, Fontanelle, Corning, Bedford, Lenox, 
and New Market
808 PM CST Sat Dec 1 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST
SUNDAY...

* WHAT...Light rain is expected into this evening as temperatures
  remain just above freezing. Later this evening into early
  morning Sunday, a transition to all snow is expected with snow
  persisting into Sunday before ending. Total accumulations of 2
  to 5 inches is expected. 

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

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...As snow begins tonight into Sunday, roads 
  will refreeze with slick, snow-covered roads expected making 
  travel difficult. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Expect slippery
roads and limited visibilities, and use caution while driving.

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

&&

$$
595 
WWUS43 KDMX 020559
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
1159 PM CST Sat Dec 1 2018

...Winter Storm to Persist into Sunday...

.A winter storm will continue to impact Iowa through Sunday
morning with areas of snow across about the northwest half of
Iowa. Blowing snow is also expected across northern Iowa as
strong winds persist overnight.

IAZ004>007-015>017-023-024-021400-
/O.CON.KDMX.WS.W.0011.000000T0000Z-181202T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-
Including the cities of Estherville, Algona, Forest City, 
Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha,
Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, and Humboldt
1159 PM CST Sat Dec 1 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST SUNDAY...

* WHAT...Periods of snow, mixed at times with rain this evening,
  are expected tonight into Sunday morning. Additional
  accumulations of 3 to 5 inches is expected with storm totals of
  5 to 10 inches with highest amounts in the northwest. Strong 
  northeast winds will produce blowing snow as well.

* WHERE...Northern Iowa, especially west of Interstate 35 and 
  north of Highway 20.

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...Travel could be very difficult. Snowfall 
  and blowing snow could significantly reduce visibility. Tree 
  damage and power outages are also possible with the strong 
  winds and heavy, wet snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible.

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

&&

$$

IAZ059-072-082-093-021400-
/O.EXA.KDMX.WW.Y.0027.000000T0000Z-181202T1800Z/
Dallas-Madison-Union-Ringgold-
Including the cities of Perry, Waukee, Adel, Winterset, Earlham, 
Creston, and Mount Ayr
1159 PM CST Sat Dec 1 2018

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON CST SUNDAY...

* WHAT...Overnight into early morning Sunday, a transition to all
  snow is expected with snow persisting into Sunday before 
  ending. Total accumulations of 2 to 5 inches is expected.

* WHERE...Parts of central into south central Iowa.

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...As snow begins tonight into Sunday, roads 
  will refreeze with slick, snow-covered roads expected making 
  travel difficult.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving. 

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

&&

$$

IAZ025>028-033>038-044>049-057-058-070-071-081-092-021400-
/O.CON.KDMX.WW.Y.0027.000000T0000Z-181202T1800Z/
Wright-Franklin-Butler-Bremer-Sac-Calhoun-Webster-Hamilton-Hardin-
Grundy-Crawford-Carroll-Greene-Boone-Story-Marshall-Audubon-
Guthrie-Cass-Adair-Adams-Taylor-
Including the cities of Eagle Grove, Clarion, Belmond, Hampton, 
Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison,
Dumont, Waverly, 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, Wellsburg, Denison, 
Carroll, Jefferson, Boone, Ames, Marshalltown, Audubon, Exira, 
Guthrie Center, Panora, Bayard, Casey, Atlantic, Greenfield, 
Stuart, Adair, Fontanelle, Corning, Bedford, Lenox, 
and New Market
1159 PM CST Sat Dec 1 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST
SUNDAY...

* WHAT...Overnight into early morning Sunday, a transition to all
  snow is expected with snow persisting into Sunday before 
  ending. Total accumulations of 2 to 5 inches is expected.

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

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...As snow begins tonight into Sunday, roads 
  will refreeze with slick, snow-covered roads expected making 
  travel difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of snow, sleet or
freezing rain will cause travel difficulties. Expect slippery
roads and limited visibilities, and use caution while driving.

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://www.weather.gov/desmoines
710 
WWUS43 KDMX 020933
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
333 AM CST Sun Dec 2 2018

...Winter Storm to Persist into Sunday...

.A winter storm will continue to impact Iowa this morning with 
areas of snow across much of northern and western Iowa. Blowing 
snow is expected across northern and western Iowa as strong winds
persist into the morning hours. 

IAZ044-045-057-070-021800-
/O.UPG.KDMX.WW.Y.0027.000000T0000Z-181202T1800Z/
/O.EXA.KDMX.WS.W.0011.000000T0000Z-181202T1800Z/
Crawford-Carroll-Audubon-Cass-
Including the cities of Denison, Carroll, Audubon, Exira, 
and Atlantic
333 AM CST Sun Dec 2 2018

...WINTER STORM WARNING IN EFFECT UNTIL NOON CST TODAY...

* WHAT...Heavy snow. Additional snow accumulations of 2 to 4 
  inches.

* WHERE...West central into southwest Iowa.

* WHEN...Until noon CST today.

* ADDITIONAL DETAILS...A band of moderate to heavy snow will
  persist across much of west central and southwest Iowa through
  the morning hours. Snowfall rates may be as high as one half
  inch to one inch per hour at times. Slick, snow-covered roads
  along with reduced visibility from areas of blowing snow may
  make travel hazardous through the morning hours. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. 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>007-015>017-023-024-021800-
/O.CON.KDMX.WS.W.0011.000000T0000Z-181202T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-
Including the cities of Estherville, Algona, Forest City, 
Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha,
Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, and Humboldt
333 AM CST Sun Dec 2 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...

* WHAT...Periods of snow to continue through the morning hours. 
  Additional accumulations of 1 to 4 inches can be expected, with 
  storm total amounts of 4 to 8 inches. The highest amounts will 
  be in the far northwest. Gusty north to northwest winds will 
  produce blowing snow as well.

* WHERE...Northern Iowa, especially west of Interstate 35 and 
  north of Highway 20.

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...Travel could be very difficult. Snowfall 
  and blowing snow could significantly reduce visibility. Tree 
  damage and power outages are also possible with the strong 
  winds and heavy, wet snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning means significant amounts of snow, sleet
and ice will make travel very hazardous or impossible.

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

&&

$$

IAZ025>028-033>038-046>049-058-059-071-072-081-082-092-093-021800-
/O.CON.KDMX.WW.Y.0027.000000T0000Z-181202T1800Z/
Wright-Franklin-Butler-Bremer-Sac-Calhoun-Webster-Hamilton-Hardin-
Grundy-Greene-Boone-Story-Marshall-Guthrie-Dallas-Adair-Madison-
Adams-Union-Taylor-Ringgold-
Including the cities of Eagle Grove, Clarion, Belmond, Hampton, 
Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison,
Dumont, Waverly, 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, Wellsburg, Jefferson, 
Boone, Ames, Marshalltown, Guthrie Center, Panora, Bayard, Casey,
Perry, Waukee, Adel, Greenfield, Stuart, Adair, Fontanelle, 
Winterset, Earlham, Corning, Creston, Bedford, Lenox, New Market,
and Mount Ayr
333 AM CST Sun Dec 2 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST
TODAY...

* WHAT...Periods of snow to continue his morning. Total 
  accumulations of 2 to 5 inches is expected. 

* WHERE...Parts of central into south central Iowa.

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...Slick, snow-covered roads are expected to
  make travel difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving.

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://www.weather.gov/desmoines
747 
WWUS43 KDMX 021330
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
730 AM CST Sun Dec 2 2018

...Winter Storm to Wind Down Today...

.A winter storm will continue to impact Iowa this morning with
areas of snow across much of northern and western Iowa. Blowing
and drifting snow is expected across northern and western Iowa as
strong winds persist through the morning hours. The snow is 
expected to taper off by mid-day into this afternoon, with some 
patchy blowing snow still possible into the afternoon hours. 

IAZ004>007-015>017-023-024-044-045-057-070-021800-
/O.CON.KDMX.WS.W.0011.000000T0000Z-181202T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Crawford-Carroll-Audubon-Cass-
Including the cities of Estherville, Algona, Forest City, 
Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha,
Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, Humboldt, Denison, Carroll, Audubon, Exira, 
and Atlantic
730 AM CST Sun Dec 2 2018

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...

* WHAT...Periods of snow continue this morning. Snow to taper off
  toward mid-day into this afternoon. Additional snow 
  accumulations of 1 to 2 inches through Noon.

* WHERE...West central into southwest Iowa.

* WHEN...Until noon CST today.

* ADDITIONAL DETAILS...Slick, snow-covered roads along with
  reduced visibility from some blowing and drifting snow will make
  travel hazardous at times this morning. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Storm Warning for snow means severe winter weather
conditions will make travel very hazardous or impossible. 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.

&&

$$

IAZ025>028-033>038-046>049-058-059-071-072-081-082-092-093-021800-
/O.CON.KDMX.WW.Y.0027.000000T0000Z-181202T1800Z/
Wright-Franklin-Butler-Bremer-Sac-Calhoun-Webster-Hamilton-Hardin-
Grundy-Greene-Boone-Story-Marshall-Guthrie-Dallas-Adair-Madison-
Adams-Union-Taylor-Ringgold-
Including the cities of Eagle Grove, Clarion, Belmond, Hampton, 
Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison,
Dumont, Waverly, 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, Wellsburg, Jefferson, 
Boone, Ames, Marshalltown, Guthrie Center, Panora, Bayard, Casey,
Perry, Waukee, Adel, Greenfield, Stuart, Adair, Fontanelle, 
Winterset, Earlham, Corning, Creston, Bedford, Lenox, New Market,
and Mount Ayr
730 AM CST Sun Dec 2 2018

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST
TODAY...

* WHAT...Periods of snow continue this morning. Snow to taper off
  toward mid-day into this afternoon. Additional snow 
  accumulations of 1 to 2 inches through Noon.

* WHERE...Parts of central into south central Iowa.

* WHEN...Now until noon CST Sunday.

* ADDITIONAL DETAILS...Slick, snow-covered roads are expected to
  make travel difficult. Some patchy blowing and drifting snow is
  possible through the day.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Expect snow covered roads
and limited visibilities, and use caution while driving.

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://www.weather.gov/desmoines
788 
WWUS43 KDMX 021757
WSWDMX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Des Moines IA
1157 AM CST Sun Dec 2 2018

...Winter Storm Winding Down Across Iowa...

IAZ004>007-015>017-023-024-044-045-057-070-021900-
/O.EXP.KDMX.WS.W.0011.000000T0000Z-181202T1800Z/
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Crawford-Carroll-Audubon-Cass-
Including the cities of Estherville, Algona, Forest City, 
Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha,
Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, 
Gilmore City, Humboldt, Denison, Carroll, Audubon, Exira, 
and Atlantic
1157 AM CST Sun Dec 2 2018

...WINTER STORM WARNING WILL EXPIRE AT NOON CST TODAY...

Periods of light snow and flurries will persist into this
afternoon along with gusty north winds. However, impactful 
accumulating snow has finished with little additional accumulation
expected. Some patchy blowing snow will remain in rural areas so 
a few slick spots may still exist on area highways and roads. 

$$

IAZ025>028-033>038-046>049-058-059-071-072-081-082-092-093-021900-
/O.EXP.KDMX.WW.Y.0027.000000T0000Z-181202T1800Z/
Wright-Franklin-Butler-Bremer-Sac-Calhoun-Webster-Hamilton-Hardin-
Grundy-Greene-Boone-Story-Marshall-Guthrie-Dallas-Adair-Madison-
Adams-Union-Taylor-Ringgold-
Including the cities of Eagle Grove, Clarion, Belmond, Hampton, 
Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison,
Dumont, Waverly, 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, Wellsburg, Jefferson, 
Boone, Ames, Marshalltown, Guthrie Center, Panora, Bayard, Casey,
Perry, Waukee, Adel, Greenfield, Stuart, Adair, Fontanelle, 
Winterset, Earlham, Corning, Creston, Bedford, Lenox, New Market,
and Mount Ayr
1157 AM CST Sun Dec 2 2018

...WINTER WEATHER ADVISORY WILL EXPIRE AT NOON CST TODAY...

Periods of light snow and flurries will persist into this
afternoon along with gusty north winds. However, impactful 
accumulating snow has finished with little additional accumulation
expected.

$$

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

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 Nov 30, 12:01 PM CST, 3 hours 17 minutes earlier.

Area forecast discussion, Nov 30, 12:01 PM CST, 3 hours 17 minutes before
Area Forecast Discussion
National Weather Service Des Moines IA
1201 PM CST Fri Nov 30 2018

.UPDATE...
Issued at 622 AM CST Fri Nov 30 2018

Continue to see dense fog expand across the forecast area, thus
have expanded the advisory to include nearly all of the forecast
area except for the far northeast. Also went ahead and extended
the advisory until 10am which still may not be enough, as feel
some of the fog may improve some above dense criteria, but may
linger through much of the day. Slick spots still possible from
frosty patches of fog deposits freezing on roads, bridges and
sidewalks.

&&

.SHORT TERM.../Today/
Issued at 430 AM CST Fri Nov 30 2018

A large area of surface high pressure is in place across the state
early this morning with a large low stratus deck continuing to
progress slowly southward across northern and northwestern Iowa.
Some patchy dense fog is occurring near the edge of the advancing
stratus with visibilities improving some as the clouds move in.
Further south along the southern half of the forecast area mainly
clear skies or some high clouds are in place with dense fog
developing as with moist air in place across the snowpack and frozen
ground and abundance residual moisture from the light rain earlier
Thursday. Some slick spots were already being reported from the wet
pavement getting frosty/freezing spots. Additional slick spots
likely with the dense fog as much of the sites along and south of
Hwy 30 at 1/2 mile or less. Therefore could have some fog deposits
on surfaces creating slick spots on roads, bridges and sidewalks.
The fog will likely continue into the mid morning hours before
improving some by late morning. Some concern of it lifting some, but
still sticking around through much of the day. Will have to monitor
and address that later this morning. WAA should allow for milder
temps today into the mid to upper 30s, but warming will be tempered
with the fog and stratus.

.LONG TERM.../Tonight through Thursday/
Issued at 430 AM CST Fri Nov 30 2018

Similar to last night, the focus in the longer term was on the
weekend storm. The trough of low pressure has dug into the southwest
US per water vapor imagery and derived motion winds from GOES-East.
As the wave moves onto the southern Plains today, the trough will
take on a negative tilt and close off at 500mb with surface low
pressure developing on the lee of the Rockies over southeast
Colorado and then eventually lifting northeastward. Soundings show
mid-level dry air that will take a bit of time to saturate so
have slowed the precipitation arrival by a few hours from previous
forecast this evening. High resolution models and indications in
global models suggest there will be a first wave of precipitation
that moves up this evening. This appears to be tied to
frontogenesis in the 700-500mb layer best shown in the NAM and to
a lesser extent in the GFS. There may be a lull of a few hours
over southern to central Iowa in the precipitation where there is
drizzle if anything. Then, a stronger surge of theta-e advection
will push northward into the state coupled with strong Q-vector
convergence that should lead to widespread precipitation. Of
course, precipitation type is still a point of contention in the
forecast. With the first wave of precipitation over central and
southern Iowa, there may be a brief window of a wintry mix before
warmer air switches the precipitation to rain. Farther north over
northern Iowa, a more prolonged wintry mix is expected due to a
warm wedge of air aloft and near to below freezing near surface
layer. Only a slight adjustment was made to the watch to start the
time a few hours later over the far north with precipitation not
starting until later this evening. Otherwise, held off on any
advisory or warning headlines with main impacts expected late
tonight if not Saturday.

For Saturday, surface low pressure will move up into northwest
Missouri toward midday. Temperatures were adjusted closer to CONSRaw
as initial guidance was a few degrees too warm given the persistent
expected precipitation. While rain will be ongoing over southern
Iowa with thunder possible per NAM and GFS soundings as far north as
perhaps Interstate 80, northern Iowa will still be in the midst of a
wintry mix favoring freezing rain. Soundings at MCW and FOD show
that there is some drier air in the mid-levels below the ice
introduction layer. As this layer saturates toward midday into the
afternoon hours, dynamic cooling in this layer will help to
transition the precipitation over to snow over this area. With a
deep layer of just below freezing, the snow could be in a favored
region of dendrites with strong omega producing a heavy, wet snow.
Winds were upped in line with CONSMOS, though may not be enough.
Regardless, northeast winds of 20 to 30 mph will certainly blow
around the falling snow and create visibility reductions along
with plastering the snow to trees. The combination of the heavy
wet snow on trees with gusty winds may cause some power outages.

As the upper low begins to shear out and lift out of the area
Saturday night into Sunday, this will allow colder air to fill into
the state with precipitation eventually change over to snow across
all of central Iowa before ending Sunday night. Still could see a
short period on the tail end of the precipitation where freezing
drizzle occurs as drier air moves into the ice introduction layer.
But for now, have kept all snow mention on the back side as the
precipitation winds down Sunday night.

Monday and beyond, colder air will settle into the state with a
front passing through late in the week that may bring some light
snow and perhaps a reinforcing shot of cold air to end the week.

&&

.AVIATION.../For the 18Z TAFS through 18Z Saturday afternoon/
Issued at 1159 AM CST Fri Nov 30 2018

Very involved forecast this period with multiple aviation impacts
expected and only medium confidence. Initially IFR/LIFR fog
and/or stratus remains in place across portions of western and
northern IA, including KFOD and KMCW. Minor improvement may occur
into this afternoon, but conditions should deteriorate again to
IFR/LIFT by tonight and also expand again area wide. An
approaching low pressure system is also expected to move through
the Plains spreading rain into southern IA and a wintry mix north.
The deep approaching low pressure system will also sharply
increase easterly flow just aloft introducing LLWS to some
locations.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
Winter Storm Watch from 6 PM CST this evening through Sunday
morning for IAZ033>037-044>046.

Winter Storm Watch from 9 PM CST this evening through Sunday
morning for IAZ004>007-015>017-023>028.

&&

UPDATE...Beerends
SHORT TERM...Beerends
LONG TERM...Ansorge
AVIATION...Small
HYDROLOGY...Ansorge
Hazardous weather outlook, Nov 30, 10:41 AM CST, 4 hours 37 minutes before
Hazardous Weather Outlook
National Weather Service Des Moines IA
1041 AM CST Fri Nov 30 2018

IAZ004>007-015>017-023>028-033>037-044>046-011200-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Crawford-Carroll-Greene-
1041 AM CST Fri Nov 30 2018

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

.DAY ONE...Today and tonight

Areas of fog this morning, which may be dense in spots, with
improvement by noontime. The fog may cause slick, frosty patches
on roads.

A Winter Storm Watch for snow and ice accumulations is also in
effect for the area starting tonight. Gusty winds will be possible
as well. Please refer to the National Weather Service website at
weather.gov/desmoines for further details.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

A Winter Storm Watch for snow and ice accumulations continue
for the area Saturday into Sunday morning. Gusty winds will be
possible as well. Please refer to the National Weather Service
website at weather.gov/desmoines for further details.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed, but any reports of snow and
ice are encouraged and appreciated.

IAZ038-039-047>050-057>062-070>075-081>086-092>097-011200-
Grundy-Black Hawk-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-
1041 AM CST Fri Nov 30 2018

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

.DAY ONE...Today and tonight

Precipitation in the form of rain or a wintry mix is expected to
develop across central Iowa this evening. Light freezing rain and
sleet is possible north along the Highway 20 corridor.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

A storm will move through Iowa tonight into the weekend. The
system may produce wintry precipitation across central Iowa
with light snow and ice accumulations possible. Gusty winds
are possible as well. Locally heavy rain is possible at times,
which could lead to some minor flood concerns.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed, but any reports of snow or
ice accumulations are encouraged and appreciated.

Small

In the hours before

Special weather statement, Nov 30, 10:32 AM CST, 4 hours 46 minutes before
Special Weather Statement
National Weather Service Des Moines IA
1032 AM CST Fri Nov 30 2018

IAZ004>007-015>017-023>026-033>037-044>048-057-301800-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Sac-Calhoun-Webster-Hamilton-
Hardin-Crawford-Carroll-Greene-Boone-Story-Audubon-
Including the cities of Estherville, Algona, Forest City,
Lake Mills, Northwood, Manly, 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, Fort Dodge,
Webster City, Iowa Falls, Eldora, Ackley, Denison, Carroll,
Jefferson, Boone, Ames, Audubon, and Exira
1032 AM CST Fri Nov 30 2018

...Areas of Fog will Persist through the Morning...

Conditions continue to gradually improve but widespread fog of varied
degrees remains in place across portions of northern and western
Iowa. This includes Interstates 35 and 80 north and west of Des
Moines. In some locations the fog will be dense with visibilities
below a half mile. The visibilities should improve to at least a
mile or two in most locations by noon however.

Motorists are encouraged to slow down and allow for extra distance
between vehicles.

Small

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 30, 2:34 AM CSTDense Fog AdvisoryDMXAdair, Adams, Appanoose, Audubon, Black Hawk, Boone and 43 more7 hr
Nov 30, 3:18 PM CSTWinter Weather AdvisoryDMXAdair, Adams, Audubon, Boone, Bremer, Butler and 20 more45 hr

Nearby

Winter Storm Warnings in Iowa, 2018Every winter storm warning in 2018

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.