Alert archive / Iowa / Wind Chill Warnings in 2019

Wind Chill Warning 3, NWS Quad Cities, IA

January 31, 20198 counties in Iowa

NWS Quad Cities, IA issued this wind chill warning at Jan 31, 2019, 10:04 AM CST for 8 counties in Iowa. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 31, 2019, 10:04 AM CST (16:04 UTC)
Expired
Jan 31, 2019, 1:00 PM CST
In force
3 hr
Issued by
NWS Quad Cities, IA

Counties Benton County, IA, Buchanan County, IA, Clinton County, IA, Delaware County, IA, Dubuque County, IA, Jackson County, IA, Jones County, IA, Linn County, IA

The radar

The Quad Cities radar (KDVN), 87 km from the middle of the area, began a volume at 16:05 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.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 4.1 hours before the alert went out and 91 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Davenport, at 12:00Z on 2019-01-31Temperature 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, Davenport, at 12:00Z on 2019-01-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 171 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1204 m above ground
0-6 km bulk shear
81 kt
0-1 km storm-relative helicity
171 m²/s²
0-3 km storm-relative helicity
305 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

860 
WWUS43 KDVN 311604
WSWDVN

URGENT - WINTER WEATHER MESSAGE
National Weather Service Quad Cities IA IL
1004 AM CST Thu Jan 31 2019

...Dangerous Wind Chills This Morning...

...Accumulating Snow This Afternoon & Evening...

Very cold, dangerous wind chills are expected across much of the
area through this morning. The coldest temperatures since 1996,
possibly colder, combined with the wind are expected to push wind
chills into the range of 30 to 45 below zero.

In addition, rural areas had significant drifting on Tuesday and
Tuesday night. Due to the cold, this could create a dangerous
situation if your vehicle becomes stuck in the snow drifts or
disabled. Travel is not advised.

Starting this afternoon, accumulating snow will spread across the
region. Snowfall amounts of 2 to 4 inches are expected across
portions of northwest Illinois, with a lighter 1 to 3 inches
elsewhere. The snow will end from west to east tonight.

IAZ040>042-051>053-311900-
/O.EXP.KDVN.WC.W.0002.000000T0000Z-190131T1600Z/
/O.NEW.KDVN.WC.W.0003.190131T1604Z-190131T1900Z/
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-
Including the cities of Independence, Manchester, Dubuque, 
Vinton, Cedar Rapids, and Anamosa
1004 AM CST Thu Jan 31 2019

...WIND CHILL WARNING IN EFFECT UNTIL 1 PM CST THIS AFTERNOON...

* WHAT...Dangerously cold wind chills. Wind chills as low as 35 
  below zero.

* WHERE...Portions of east central and northeast Iowa.

* WHEN...Until 1 PM CST this afternoon.

* ADDITIONAL DETAILS...The dangerously cold wind chills could 
  cause frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frostbite
can occur quickly and even hypothermia or death if precautions
are not taken. 

&&

$$

IAZ054-066-311800-
/O.EXP.KDVN.WC.W.0002.000000T0000Z-190131T1600Z/
/O.NEW.KDVN.WC.W.0003.190131T1604Z-190131T1800Z/
Jackson-Clinton-
Including the cities of Maquoketa and Clinton
1004 AM CST Thu Jan 31 2019

...WIND CHILL WARNING IN EFFECT UNTIL NOON CST TODAY...

* WHAT...Dangerously cold wind chills. Wind chills as low as 35 
  below zero.

* WHERE...Jackson and Clinton Counties.

* WHEN...Until noon CST today.

* ADDITIONAL DETAILS...The dangerously cold wind chills could 
  cause frostbite on exposed skin in as little as 10 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frostbite
can occur quickly and even hypothermia or death if precautions
are not taken. 

&&

$$

IAZ063>065-067-068-076>078-087>089-098-099-ILZ015-024>026-034-035-
MOZ009-010-311715-
/O.EXP.KDVN.WC.W.0002.000000T0000Z-190131T1600Z/
Iowa-Johnson-Cedar-Muscatine-Scott-Keokuk-Washington-Louisa-
Jefferson-Henry IA-Des Moines-Van Buren-Lee-Rock Island-Mercer-
Henderson-Warren-Hancock-McDonough-Scotland-Clark-
Including the cities of Marengo, Iowa City, Tipton, Muscatine, 
Davenport, Bettendorf, Sigourney, Washington, Wapello, Fairfield,
Mount Pleasant, Burlington, Keosauqua, Fort Madison, Moline, 
Rock Island, Aledo, Oquawka, Monmouth, Carthage, Macomb, Memphis,
and Kahoka
1004 AM CST Thu Jan 31 2019

...WIND CHILL WARNING HAS EXPIRED...

Wind chills have recovered while temperatures have increased from
record lows this morning. Some areas may still see sporadic wind
chills less than 20 below zero through noon today. Be sure to
bundle up if you are outdoors..

$$

ILZ007-009-016>018-010015-
/O.CON.KDVN.WC.W.0002.000000T0000Z-190131T1800Z/
/O.CON.KDVN.WW.Y.0008.190131T1800Z-190201T0600Z/
Carroll-Whiteside-Henry IL-Bureau-Putnam-
Including the cities of Mount Carroll, Sterling, Geneseo, 
Princeton, and Hennepin
1004 AM CST Thu Jan 31 2019

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* WHAT...Wind chills of 35 to 45 below into Tuesday morning. 
  Snow expected beginning this afternoon, with accumulations of 
  2 to 4 inches by midnight.

* WHERE...Carroll, Whiteside, Henry IL, Bureau and Putnam 
  Counties.

* WHEN...For the Wind Chill Warning, until noon CST today. For 
  the Winter Weather Advisory, from noon today to midnight CST 
  tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. The 
  hazardous conditions could impact the evening commute. The 
  cold wind chills could cause frostbite on exposed skin in as 
  little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frostbite
can occur quickly and even hypothermia or death if precautions
are not taken. 

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. 

Additional information can be found at www.weather.gov/quadcities

&&

$$

ILZ001-002-311800-
/O.CON.KDVN.WC.W.0002.000000T0000Z-190131T1800Z/
Jo Daviess-Stephenson-
Including the cities of Galena and Freeport
1004 AM CST Thu Jan 31 2019

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...

* WHAT...Wind chills of 35 to 45 below zero into Thursday 
  morning.

* WHERE...Portions of northeast Missouri, east central and 
  southeast Iowa and north central, northwest and west central 
  Illinois.

* WHEN...Until noon CST Thursday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frostbite
can occur quickly and even hypothermia or death if precautions
are not taken. 

&&

$$
3 follow-up statements
227 
WWUS43 KDVN 311726
WSWDVN

URGENT - WINTER WEATHER MESSAGE
National Weather Service Quad Cities IA IL
1126 AM CST Thu Jan 31 2019

...Dangerous Wind Chills This Morning...

...Accumulating Snow This Afternoon & Evening...

Very cold, dangerous wind chills are expected across much of the
area through this morning. The coldest temperatures since 1996,
possibly colder, combined with the wind are expected to push wind
chills into the range of 30 to 45 below zero.

In addition, rural areas had significant drifting on Tuesday and
Tuesday night. Due to the cold, this could create a dangerous
situation if your vehicle becomes stuck in the snow drifts or
disabled. Travel is not advised.

Starting this afternoon, accumulating snow will spread across the
region. Snowfall amounts of 2 to 4 inches are expected across
portions of northwest Illinois and eastern Iowa. with a lighter 1
to 3 inches elsewhere. The snow will end from west to east 
tonight.

IAZ054-066-010130-
/O.EXB.KDVN.WW.Y.0008.190131T1726Z-190201T0600Z/
/O.CON.KDVN.WC.W.0003.000000T0000Z-190131T1800Z/
Jackson-Clinton-
Including the cities of Maquoketa and Clinton
1126 AM CST Thu Jan 31 2019

...WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT CST TONIGHT...
...WIND CHILL WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...

* WHAT...Dangerously cold wind chills and snow. Wind chills as low
  as 30 below zero. Additional snow accumulations of 2 to 4 
  inches.

* WHERE...Jackson and Clinton Counties.

* WHEN...For the Wind Chill Warning, until noon CST today. For 
  the Winter Weather Advisory, until midnight CST tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. The 
  hazardous conditions could impact the evening commute. The 
  cold wind chills could cause frostbite on exposed skin in as 
  little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frostbite
can occur quickly and even hypothermia or death if precautions
are not taken. 

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. 

Additional information can be found at www.weather.gov/quadcities

&&

$$

IAZ053-010130-
/O.EXB.KDVN.WW.Y.0008.190131T1726Z-190201T0600Z/
/O.CON.KDVN.WC.W.0003.000000T0000Z-190131T1900Z/
Jones-
Including the city of Anamosa
1126 AM CST Thu Jan 31 2019

...WINTER WEATHER ADVISORY IN EFFECT UNTIL MIDNIGHT CST TONIGHT...
...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 1 PM CST THIS
AFTERNOON...

* WHAT...Dangerously cold wind chills and snow. Wind chills as low
  as 30 below zero. Additional snow accumulations of 2 to 4 
  inches.

* WHERE...Jones County.

* WHEN...For the Wind Chill Warning, until 1 PM CST this 
  afternoon. For the Winter Weather Advisory, until midnight CST 
  tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. The 
  hazardous conditions could impact the evening commute. The 
  cold wind chills could cause frostbite on exposed skin in as 
  little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frostbite
can occur quickly and even hypothermia or death if precautions
are not taken. 

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. 

Additional information can be found at www.weather.gov/quadcities

&&

$$

ILZ007-009-016>018-010130-
/O.EXT.KDVN.WW.Y.0008.190131T1726Z-190201T0600Z/
/O.CON.KDVN.WC.W.0002.000000T0000Z-190131T1800Z/
Carroll-Whiteside-Henry IL-Bureau-Putnam-
Including the cities of Mount Carroll, Sterling, Geneseo, 
Princeton, and Hennepin
1126 AM CST Thu Jan 31 2019

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...
...WIND CHILL WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...

* WHAT...Wind chills of 35 to 45 below into Tuesday morning. 
  Snow expected beginning this afternoon, with accumulations of 
  2 to 4 inches by midnight.

* WHERE...Carroll, Whiteside, Henry IL, Bureau and Putnam 
  Counties.

* WHEN...For the Wind Chill Warning, until noon CST today. For 
  the Winter Weather Advisory, until midnight CST tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. The 
  hazardous conditions could impact the evening commute. The 
  cold wind chills could cause frostbite on exposed skin in as 
  little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frostbite
can occur quickly and even hypothermia or death if precautions
are not taken. 

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. 

Additional information can be found at www.weather.gov/quadcities

&&

$$

IAZ040>042-051-052-311900-
/O.CON.KDVN.WC.W.0003.000000T0000Z-190131T1900Z/
Buchanan-Delaware-Dubuque-Benton-Linn-
Including the cities of Independence, Manchester, Dubuque, 
Vinton, and Cedar Rapids
1126 AM CST Thu Jan 31 2019

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 1 PM CST THIS
AFTERNOON...

* WHAT...Dangerously cold wind chills. Wind chills as low as 35 
  below zero.

* WHERE...Portions of east central and northeast Iowa.

* WHEN...Until 1 PM CST this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frostbite
can occur quickly and even hypothermia or death if precautions
are not taken. 

&&

$$

ILZ001-002-311830-
/O.CON.KDVN.WC.W.0002.000000T0000Z-190131T1800Z/
Jo Daviess-Stephenson-
Including the cities of Galena and Freeport
1126 AM CST Thu Jan 31 2019

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...

* WHAT...Wind chills of 35 to 45 below zero into Thursday 
  morning.

* WHERE...Portions of northeast Missouri, east central and 
  southeast Iowa and north central, northwest and west central 
  Illinois.

* WHEN...Until noon CST Thursday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frostbite
can occur quickly and even hypothermia or death if precautions
are not taken. 

&&

$$

IAZ065-067-068-ILZ015-024-010130-
/O.EXB.KDVN.WW.Y.0008.190131T1726Z-190201T0600Z/
Cedar-Muscatine-Scott-Rock Island-Mercer-
Including the cities of Tipton, Muscatine, Davenport, Bettendorf,
Moline, Rock Island, and Aledo
1126 AM CST Thu Jan 31 2019

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

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

* WHERE...In Iowa, Cedar, Muscatine and Scott Counties. In 
  Illinois, Rock Island and Mercer Counties.

* WHEN...Until midnight CST tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. The 
  hazardous conditions could impact the evening commute. The 
  cold wind chills as low as 25 below zero could cause frostbite 
  on exposed skin in as little as 30 minutes.

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. 

Additional information can be found at www.weather.gov/quadcities

&&

$$
034 
WWUS43 KDVN 311810
WSWDVN

URGENT - WINTER WEATHER MESSAGE
National Weather Service Quad Cities IA IL
1210 PM CST Thu Jan 31 2019

...Dangerous Wind Chills This Morning...

...Accumulating Snow This Afternoon & Evening...

Very cold, dangerous wind chills are expected across much of the
area through this morning. The coldest temperatures since 1996,
possibly colder, combined with the wind are expected to push wind
chills into the range of 30 to 45 below zero.

In addition, rural areas had significant drifting on Tuesday and
Tuesday night. Due to the cold, this could create a dangerous
situation if your vehicle becomes stuck in the snow drifts or
disabled. Travel is not advised.

Starting this afternoon, accumulating snow will spread across the
region. Snowfall amounts of 2 to 4 inches are expected across
portions of northwest Illinois and eastern Iowa. with a lighter
1 to 3 inches elsewhere. The snow will end from west to east
tonight.

IAZ054-066-010215-
/O.EXP.KDVN.WC.W.0003.000000T0000Z-190131T1800Z/
/O.CON.KDVN.WW.Y.0008.000000T0000Z-190201T0600Z/
Jackson-Clinton-
Including the cities of Maquoketa and Clinton
1210 PM CST Thu Jan 31 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...
...WIND CHILL WARNING HAS EXPIRED...

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches.

* WHERE...Jackson and Clinton Counties.

* WHEN...For the Wind Chill Warning, until noon CST today. For 
  the Winter Weather Advisory, until midnight CST tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. The
  hazardous conditions could impact the evening commute. 
 
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. 

Additional information can be found at www.weather.gov/quadcities

&&

$$

ILZ007-009-016>018-010215-
/O.EXP.KDVN.WC.W.0002.000000T0000Z-190131T1800Z/
/O.CON.KDVN.WW.Y.0008.000000T0000Z-190201T0600Z/
Carroll-Whiteside-Henry IL-Bureau-Putnam-
Including the cities of Mount Carroll, Sterling, Geneseo, 
Princeton, and Hennepin
1210 PM CST Thu Jan 31 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...
...WIND CHILL WARNING HAS EXPIRED...

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches.

* WHERE...Carroll, Whiteside, Henry IL, Bureau and Putnam 
  Counties.

* WHEN...For the Wind Chill Warning, until noon CST today. For 
  the Winter Weather Advisory, until midnight CST tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. The
  hazardous conditions could impact the evening commute. 

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. 

Additional information can be found at www.weather.gov/quadcities

&&

$$

ILZ001-002-311915-
/O.EXP.KDVN.WC.W.0002.000000T0000Z-190131T1800Z/
Jo Daviess-Stephenson-
Including the cities of Galena and Freeport
1210 PM CST Thu Jan 31 2019

...WIND CHILL WARNING HAS EXPIRED...

Wind chills have recovered while temperatures have increased from
record lows this morning. Some areas may still see sporadic wind
chills less than 20 below zero through noon today. Be sure to
bundle up if you are outdoors.

$$

IAZ053-010215-
/O.CON.KDVN.WC.W.0003.000000T0000Z-190131T1900Z/
/O.CON.KDVN.WW.Y.0008.000000T0000Z-190201T0600Z/
Jones-
Including the city of Anamosa
1210 PM CST Thu Jan 31 2019

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 1 PM CST THIS
AFTERNOON...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* WHAT...Dangerously cold wind chills and snow. Wind chills as 
  low as 30 below zero. Additional snow accumulations of 2 to 4 
  inches.

* WHERE...Jones County.

* WHEN...For the Wind Chill Warning, until 1 PM CST this 
  afternoon. For the Winter Weather Advisory, until midnight CST 
  tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. The
  hazardous conditions could impact the evening commute. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frostbite
can occur quickly and even hypothermia or death if precautions
are not taken. 

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. 

Additional information can be found at www.weather.gov/quadcities

&&

$$

IAZ040>042-051-052-311915-
/O.CON.KDVN.WC.W.0003.000000T0000Z-190131T1900Z/
Buchanan-Delaware-Dubuque-Benton-Linn-
Including the cities of Independence, Manchester, Dubuque, 
Vinton, and Cedar Rapids
1210 PM CST Thu Jan 31 2019

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 1 PM CST THIS
AFTERNOON...

* WHAT...Dangerously cold wind chills. Wind chills as low as 35 
  below zero.

* WHERE...Portions of east central and northeast Iowa.

* WHEN...Until 1 PM CST this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Warning means the combination of very cold air and
the wind will create dangerously low wind chill values. Frostbite
can occur quickly and even hypothermia or death if precautions
are not taken. 

&&

$$

IAZ065-067-068-ILZ015-024-010215-
/O.CON.KDVN.WW.Y.0008.000000T0000Z-190201T0600Z/
Cedar-Muscatine-Scott-Rock Island-Mercer-
Including the cities of Tipton, Muscatine, Davenport, Bettendorf,
Moline, Rock Island, and Aledo
1210 PM CST Thu Jan 31 2019

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

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

* WHERE...In Iowa, Cedar, Muscatine and Scott Counties. In 
  Illinois, Rock Island and Mercer Counties.

* WHEN...Until midnight CST tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. The
  hazardous conditions could impact the evening commute. 

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. 

Additional information can be found at www.weather.gov/quadcities

&&

$$
993 
WWUS43 KDVN 311906
WSWDVN

URGENT - WINTER WEATHER MESSAGE
National Weather Service Quad Cities IA IL
106 PM CST Thu Jan 31 2019

...Dangerous Wind Chills Generally Improving...

...Accumulating Snow This Afternoon & Evening...

Rounds of accumulating snow will continue to move east across the
area this afternoon and evening. Snowfall amounts of 2 to 4 
inches are expected across portions of northwest Illinois and into
east central Iowa. Lighter snowfall amounts of 1 to 3 inches will
occur elsewhere. The snow will end from west to east tonight.

IAZ053-010315-
/O.EXP.KDVN.WC.W.0003.000000T0000Z-190131T1900Z/
/O.CON.KDVN.WW.Y.0008.000000T0000Z-190201T0600Z/
Jones-
Including the city of Anamosa
106 PM CST Thu Jan 31 2019

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...
...WIND CHILL WARNING WILL EXPIRE AT 1 PM CST THIS AFTERNOON...

* WHAT...Snow. Additional snow accumulations of up to two inches.

* WHERE...Jones County.

* WHEN...Winter Weather Advisory, until midnight CST tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. The 
  hazardous conditions could impact the evening commute. The 
  cold wind chills as low as 20 below zero could cause frostbite 
  on exposed skin in as little as 30 minutes.

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. 

Additional information can be found at www.weather.gov/quadcities

&&

$$

IAZ040>042-051-052-312015-
/O.EXP.KDVN.WC.W.0003.000000T0000Z-190131T1900Z/
Buchanan-Delaware-Dubuque-Benton-Linn-
Including the cities of Independence, Manchester, Dubuque, 
Vinton, and Cedar Rapids
106 PM CST Thu Jan 31 2019

...WIND CHILL WARNING WILL EXPIRE AT 1 PM CST THIS AFTERNOON...

Wind chills have generally recovered above warning criteria across
most of the area, as temperatures have increased from record lows
this morning. But some areas may still see sporadic wind chills 
less than 25 below zero through mid afternoon. So it is advised to
still bundle up if you have to head outdoors this afternoon.

$$

IAZ054-065>068-ILZ007-009-015>018-024-010315-
/O.CON.KDVN.WW.Y.0008.000000T0000Z-190201T0600Z/
Jackson-Cedar-Clinton-Muscatine-Scott-Carroll-Whiteside-
Rock Island-Henry IL-Bureau-Putnam-Mercer-
Including the cities of Maquoketa, Tipton, Clinton, Muscatine, 
Davenport, Bettendorf, Mount Carroll, Sterling, Moline, 
Rock Island, Geneseo, Princeton, Hennepin, and Aledo
106 PM CST Thu Jan 31 2019

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

* WHAT...Snow. Additional snow accumulations of 1 to 3 inches.

* WHERE...Jackson and Clinton Counties.

* WHEN...The Winter Weather Advisory, until midnight CST tonight.

* ADDITIONAL DETAILS...Plan on slippery road conditions. The 
  hazardous conditions could impact the evening commute.

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.

Additional information can be found at www.weather.gov/quadcities

&&

$$

What forecasters said that day

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

NWS Quad Cities, IA wrote its last area forecast discussion before this wind chill warning went out at Jan 31, 4:56 AM CST, 5 hours 8 minutes earlier.

Area forecast discussion, Jan 31, 4:56 AM CST, 5 hours 8 minutes before
Area Forecast Discussion
National Weather Service Quad Cities IA IL
456 AM CST Thu Jan 31 2019

...12z AVIATION UPDATE...

.SYNOPSIS...
Issued at 235 AM CST Thu Jan 31 2019

Another night of records are in the books!

Latest surface analysis depicted a 1032 mb Arctic high centered over
southern IA and northern MO at 2 AM. Skies were clear with light and
variable winds across the region. This, combined with the extremely dry
Arctic air mass, has allowed for another night of broken temperatures
records at climate sites. Moline, IL (Quad Cities) broke its all-time
record low of -28F set back in 1996, with the new value of -29F. In
addition, Moline and Cedar Rapids have already broken their low
temperatures for today (January 31st). While most areas have had
near calm winds much of the night, locations that have seen a 5-10
MPH wind have seen wind chills drop to between -30F and -45F.

&&

.SHORT TERM...(Today and Tonight)
ISSUED AT 235 AM CST Thu Jan 31 2019

I will let wind chill warnings continue after collaboration with
surrounding offices on headlines, which remain in effect either
until 10 AM or noon depending on location. Despite the warnings in
place, wind chills are not likely to fully immersed into criteria
through the remainder of the headlines at most sites, so will let
the day shift coordinate appropriate cancellations/expirations.

The Arctic high will slowly move east this morning, taking the
brutal cold with it. Despite its departure, temperatures across the
area will not see extremely favorable moderation due to our cold
start and increasing cloud cover. Current forecast has highs
ranging from just below zero along the Highway 20 corridor, to
around 10 degrees over northeast MO and west central IL.

Our next system in the form of an Arctic clipper will arrive this
afternoon, bringing light snow across much of the region. Moisture
with this system is somewhat limited, but the presence of SLRs
around 20:1 will ensure we see snow accumulation. Latest suite of
model guidance shows the best low-level 850 mb frontogenetical
occurring along and east of a line from Waterloo, IA to Macomb, IL,
where snowfall amounts of 1-3 inches of snow are possible. High res
models such as the 00z NAMnest suggest amounts exceeding 4 inches
over portions of far eastern IA and northwest IL along and north of
the I-80 corridor, where higher omegas are focused.

After collaboration, have decided to issue a Winter Weather Advisory
for portions of northwest IL where snowfall accumulations of 2-5
inches will be possible. Outside of the advisory, expect snowfall
amounts around 1-3 inches. The advisory is in effect from noon today
until midnight.

.LONG TERM...(Friday through Wednesday)
ISSUED AT 235 AM CST Thu Jan 31 2019

The transition from bitter cold to mild conditions with fog,
drizzle, and some rain will be well under way by late Friday night.
This mild pattern continues through Monday, before return to more
typical wintry weather and another possible arctic front for mid
week.

Friday, clouds will continue to spread north, with rising
temperatures, but still rather cold conditions in the lower t. to
mid 20s. After an evening low in the teens, rising temperatures will
move in for after Midnight, and by Saturday morning, dewpoint and
temperatures above freezing will advance north over the CWA.
Normally, I'd be thinking dense fog and go cold, but this is a
continuous flow of southerly air, with no convergence, and that may
keep the fog from being very dense. Still, drizzle and fog (dense or
not) are likely for Saturday and Sunday. Road temperatures will
undoubtedly be cold to start Saturday, but with rising dewpoints and
low cloud long wave radiation, the roads should creep up above
freezing during the day Saturday, and with that, it should be
maintained into Saturday night and Sunday as dewpoints continue to
rise.

Models are split on whether a significant rain is possible Sunday
night, with the GFS showing a quarter to half inch, and GEM and EC
staying farther north and mainly very light.  This storm is pretty
far off for a short window of rainfall like that to have confidence.
In the end, we have so much snow, the melt could be more of an issue
than rainfall, but only if we melt most of it, otherwise the snow
water will not be released significantly.

Following that system, another low may sweep up over the Midwest for
mid week ahead of another rather strong arctic high pressure. This
snow event could be worth of headlines if the GFS is correct, but
it's certainly a change compared to previous runs of that model. The
EC has a slower solution with more mild air in place, and with that
a possible rain or freezing rain event. Far to out for confidence at
this point.

ERVIN

&&

.AVIATION...(For the 12Z TAFS through 12Z Friday Morning)
ISSUED AT 455 AM CST Thu Jan 31 2019

VFR conditions expected at all TAF sites this morning w/ light winds
and bitterly cold temperatures. By late morning/early afternoon,
conditions will deteriorate to IFR as a Arctic clipper spreads light
accumulating snow across the region. The clipper will exit this
evening, leading to improving CIGs and visibilities overnight. Winds
will be out of the east around 5-10 kts.

&&

.CLIMATE...
ISSUED AT 240 AM CST Thu Jan 31 2019

Record Lows for January 31...

Moline.........-21** in 1996
Cedar Rapids...-21** in 1994
Dubuque........-24** in 1996
Burlington.....-20 in 1996

**As of 200 AM today, these lows have been either tied or broken.
 New record information will be availible later today

Coldest January low temperatures...

Burlington........ -24 on 1/14/1957
Cedar Rapids...... -29* on 1/15/2009
Dubuque........... -32 on 1/07/1887
Moline............ -27** on 1/16/2009
                            1/02/1979
                            1/05/1884

*Data for Cedar Rapids is only back to 1893. There is data suggesting
even colder temperatures for Cedar Rapids in the 1880s.
**As of 200 AM today, these lows have been either tied or broken.
 New record information will be availible later today

All-Time Record Lows...

Burlington........ -27  on 2/13/1905
Cedar Rapids...... -29* on 1/15/2009
Dubuque........... -32  on 1/07/1887
Moline............ -28**  on 2/03/1996

*Data for Cedar Rapids is only back to 1893. There is data suggesting
even colder temperatures for Cedar Rapids in the 1880s.
**As of 200 AM today, these lows have been either tied or broken.
 New record information will be availible later today

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...Wind Chill Warning until 10 AM CST this morning for Benton-
     Buchanan-Cedar-Clinton-Delaware-Des Moines-Dubuque-Henry IA-
     Iowa-Jackson-Jefferson-Johnson-Jones-Keokuk-Lee-Linn-Louisa-
     Muscatine-Scott-Van Buren-Washington.

IL...Wind Chill Warning until 10 AM CST this morning for Hancock-
     Henderson-McDonough-Mercer-Rock Island-Warren.

     Wind Chill Warning until noon CST today for Bureau-Carroll-Henry
     IL-Jo Daviess-Putnam-Stephenson-Whiteside.

     Winter Weather Advisory from noon today to midnight CST tonight
     for Bureau-Carroll-Henry IL-Putnam-Whiteside.

MO...Wind Chill Warning until 10 AM CST this morning for Clark-
     Scotland.

&&

SYNOPSIS...Speck
SHORT TERM...Speck
LONG TERM...Ervin
AVIATION...Speck
CLIMATE...Speck
Hazardous weather outlook, Jan 31, 4:32 AM CST, 5 hours 32 minutes before
Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
432 AM CST Thu Jan 31 2019

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-011045-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
432 AM CST Thu Jan 31 2019

This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.

.DAY ONE...TODAY AND TONIGHT

Increasing clouds and calm to light winds will help reduce the
wind chill threat this morning. Still, the Wind Chill Warning
remains in effect through 10 AM in Iowa and northeast Missouri,
and through Noon in Illinois east of Galena to Kewanee. Wind
chills of 15 below to 45 below zero are possible.

Late this morning through the evening, a period of light snow
will move over the area. Snow accumulations of 1 to 3 inches are
expected east of a line from Waterloo, IA to Macomb, IL. Higher
amounts of 2 to 4 inches are possible further into northwest
Illinois, where a Winter Weather Advisory is in effect from noon
until midnight.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A mild weekend will bring possible freezing drizzle, drizzle, fog,
and light rain to the area. Fog could be dense over the deep snow
cover.

Another storm system may impact the region Tuesday and Wednesday
with rain or snow. It is too early to determine snow amounts at
this time.

.SPOTTER INFORMATION STATEMENT...

Snowfall amounts of 1 inch or more would be appreciated.

Speck/Ervin

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 31, 3:03 AM CSTWinter Weather AdvisoryDVNBenton, Cedar, Clinton, Iowa, Jackson, Johnson and 4 more21 hr

Nearby

Wind Chill Warnings in Iowa, 2019Every wind chill warning in 2019

Sources

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