Alert archive / Iowa / Wind Chill Warnings in 2010

Wind Chill Warning 1, NWS Des Moines, IA

January 1, 201020 counties in Iowa

NWS Des Moines, IA issued this wind chill warning at Jan 1, 2010, 2:24 PM CST for 20 counties in Iowa. It took effect at Jan 1, 2010, 6:00 PM CST. It was in force for 15 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 1, 2010, 2:24 PM CST (20:24 UTC)
In effect from
Jan 1, 2010, 6:00 PM CST
Expired
Jan 2, 2010, 9:00 AM CST
In force
15 hr
Issued by
NWS Des Moines, IA

Counties Black Hawk County, IA, Bremer County, IA, Butler County, IA, Calhoun County, IA, Cerro Gordo County, IA, Emmet County, IA, Franklin County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Humboldt County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA, Sac County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA

The radar

The Des Moines radar (KDMX), 118 km from the middle of the area, began a volume at 20:29 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

Minneapolis, MN (KMPX), launched 12:00Z, 8.4 hours before the alert went out and 229 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2010-01-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2010-01-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -44 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
579 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
-44 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

263 
WWUS43 KDMX 012024
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
224 PM CST FRI JAN 1 2010

...BRUTALLY COLD TEMPERATURES ARE IN STORE FOR CENTRAL IOWA TONIGHT...

.ARCTIC HIGH PRESSURE WILL CONTINUE TO PUSH INTO CENTRAL IOWA AND
WILL USHER IN EVEN COLDER AIR THAN WHAT IS CURRENTLY IN PLACE. A
CLEAR SKY AND FRESH SNOW WILL CREATE OPTIMAL COOLING CONDITIONS
TONIGHT AND THE PRESENCE OF A NORTH WIND AT 10 TO 15 MPH WILL
PRODUCE EXTREMELY DANGEROUS WIND CHILL VALUES...ESPECIALLY NORTH.

IAZ004>007-015>017-023>028-033>039-020430-
/O.NEW.KDMX.WC.W.0001.100102T0000Z-100102T1500Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...SAC CITY...
ROCKWELL CITY...FORT DODGE...WEBSTER CITY...ELDORA...
GRUNDY CENTER...WATERLOO
224 PM CST FRI JAN 1 2010

...WIND CHILL WARNING IN EFFECT FROM 6 PM THIS EVENING TO 9 AM
CST SATURDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WIND
CHILL WARNING...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 9 AM
CST SATURDAY. 

* WIND CHILL VALUES...WIND CHILL VALUES WILL BE FALLING THROUGH
  THE EARLY EVENING TO A RANGE FROM 35 TO 40 DEGREES BELOW ZERO
  FOR TONIGHT THROUGH 9AM SATURDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND
STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS
WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF
PRECAUTIONS ARE NOT TAKEN.

&&

$$

IAZ044>050-057>062-070>075-081>086-092>097-020430-
/O.NEW.KDMX.WC.Y.0009.100102T0000Z-100102T1500Z/
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-
DECATUR-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...BOONE...
AMES...MARSHALLTOWN...TOLEDO...AUDUBON...GUTHRIE CENTER...ADEL...
DES MOINES...NEWTON...GRINNELL...ATLANTIC...GREENFIELD...
WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA...CORNING...
CRESTON...OSCEOLA...CHARITON...ALBIA...OTTUMWA...BEDFORD...
MOUNT AYR...LEON...CORYDON...CENTERVILLE...BLOOMFIELD
224 PM CST FRI JAN 1 2010

...WIND CHILL ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 9 AM
CST SATURDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WIND
CHILL ADVISORY...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO
9 AM CST SATURDAY. 

* WIND CHILL VALUES...WIND CHILL VALUES WILL BE FALLING THROUGH
  THE EARLY EVENING TO A RANGE FROM 20 TO 30 DEGREES BELOW ZERO
  FOR TONIGHT THROUGH 9AM SATURDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. 
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

&&

$$

FAB
6 follow-up statements
171 
WWUS43 KDMX 020001
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
601 PM CST FRI JAN 1 2010

...BRUTALLY COLD TEMPERATURES CONTINUE TO FILTER INTO CENTRAL IOWA
TONIGHT...

.ARCTIC HIGH PRESSURE WILL CONTINUE TO PUSH INTO CENTRAL IOWA AND
BRING A VERY COLD AND DRY AIR MASS TO THE STATE THROUGH SATURDAY.
WITH CLEAR SKIES AND A FRESH SNOW PACK...OPTIMAL COOLING
CONDITIONS ARE FORECAST TONIGHT INTO EARLY SATURDAY. IN ADDITION
...THE PRESENCE OF A NORTH WIND AT 10 TO 15 MPH WILL PRODUCE
EXTREMELY DANGEROUS WIND CHILL VALUES THROUGHOUT THE STATE.

IAZ004>007-015>017-023>028-033>039-020815-
/O.CON.KDMX.WC.W.0001.000000T0000Z-100102T1500Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...SAC CITY...
ROCKWELL CITY...FORT DODGE...WEBSTER CITY...ELDORA...
GRUNDY CENTER...WATERLOO
601 PM CST FRI JAN 1 2010

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 9 AM CST SATURDAY...

A WIND CHILL WARNING REMAINS IN EFFECT UNTIL 9 AM CST SATURDAY. 

* WIND CHILL VALUES...EXPECT WIND CHILL VALUES TO CONTINUE TO
  PLUMMET THROUGH THE LATE EVENING HOURS. AT 6 PM CST...THE
  COLDEST TEMPERATURES AND WIND CHILL VALUES WERE BE LOCATED ALONG
  AND NORTH OF HIGHWAY 20...WITH ESTHERVILLE REPORTING A WIND
  CHILL VALUE OF 30 BELOW ZERO. LOOK FOR WIND CHILL VALUES OF 30
  TO 40 BELOW ZERO THE REMAINDER OF TONIGHT THROUGH SATURDAY
  MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND
STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS
WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF
PRECAUTIONS ARE NOT TAKEN.

&&

$$

IAZ044>050-057>062-070>075-081>086-092>097-020815-
/O.CON.KDMX.WC.Y.0009.000000T0000Z-100102T1500Z/
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-
DECATUR-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...BOONE...
AMES...MARSHALLTOWN...TOLEDO...AUDUBON...GUTHRIE CENTER...ADEL...
DES MOINES...NEWTON...GRINNELL...ATLANTIC...GREENFIELD...
WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA...CORNING...
CRESTON...OSCEOLA...CHARITON...ALBIA...OTTUMWA...BEDFORD...
MOUNT AYR...LEON...CORYDON...CENTERVILLE...BLOOMFIELD
601 PM CST FRI JAN 1 2010

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST
SATURDAY...

A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST SATURDAY. 

* WIND CHILL VALUES...WIND CHILL VALUES WILL CONTINUE TO DROP
  THROUGH THE REST OF THE EVENING AND INTO EARLY SATURDAY MORNING.
  WIND CHILL VALUES OF 20 TO 30 DEGREES BELOW ZERO FOR TONIGHT
  THROUGH 9AM SATURDAY GENERALLY SOUTH OF HIGHWAY 20.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

&&

$$

KLP
043 
WWUS43 KDMX 020313
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
913 PM CST FRI JAN 1 2010

...BRUTALLY COLD TEMPERATURES CONTINUE TO FILTER INTO CENTRAL
IOWA OVERNIGHT TONIGHT...

.ARCTIC HIGH PRESSURE WILL CONTINUE TO PUSH INTO CENTRAL IOWA AND
BRING A VERY COLD AND DRY AIR MASS TO THE STATE THROUGH SATURDAY.
WITH CLEAR SKIES AND A FRESH SNOW PACK...OPTIMAL COOLING
CONDITIONS ARE FORECAST THROUGH EARLY SATURDAY. IN ADDITION...THE
PRESENCE OF A NORTH WIND AT 10 TO 15 MPH WILL PRODUCE EXTREMELY
DANGEROUS WIND CHILL VALUES THROUGHOUT THE STATE.

IAZ004>007-015>017-023>028-033>039-021115-
/O.CON.KDMX.WC.W.0001.000000T0000Z-100102T1500Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...SAC CITY...
ROCKWELL CITY...FORT DODGE...WEBSTER CITY...ELDORA...
GRUNDY CENTER...WATERLOO
913 PM CST FRI JAN 1 2010

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 9 AM CST SATURDAY...

A WIND CHILL WARNING REMAINS IN EFFECT UNTIL 9 AM CST SATURDAY. 

* WIND CHILL VALUES...EXPECT WIND CHILL VALUES TO CONTINUE TO
  PLUMMET THROUGH THE LATE EVENING HOURS. AT 9 PM CST...WIND CHILL
  READINGS WERE AS LOW AS 35 BELOW ZERO NEAR THE IOWA AND
  MINNESOTA BORDER...WITH MANY OTHER AREAS NORTH OF HIGHWAY 20
  RECEIVING WIND CHILL VALUES AROUND 30 BELOW ZERO. EVEN COLDER
  WIND CHILL VALUES OF 30 TO 40 BELOW ZERO ARE LIKELY DURING THE
  OVERNIGHT HOURS INTO SATURDAY MORNING ACROSS THE AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND
STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS
WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF
PRECAUTIONS ARE NOT TAKEN.

&&

$$

IAZ044>050-057>062-070>075-081>086-092>097-021115-
/O.CON.KDMX.WC.Y.0009.000000T0000Z-100102T1500Z/
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-
DECATUR-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...BOONE...
AMES...MARSHALLTOWN...TOLEDO...AUDUBON...GUTHRIE CENTER...ADEL...
DES MOINES...NEWTON...GRINNELL...ATLANTIC...GREENFIELD...
WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA...CORNING...
CRESTON...OSCEOLA...CHARITON...ALBIA...OTTUMWA...BEDFORD...
MOUNT AYR...LEON...CORYDON...CENTERVILLE...BLOOMFIELD
913 PM CST FRI JAN 1 2010

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST
SATURDAY...

A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST SATURDAY. 

* WIND CHILL VALUES...WIND CHILL VALUES WILL CONTINUE TO DROP
  THROUGH THE OVERNIGHT HOURS INTO SATURDAY MORNING. WIND CHILL
  VALUES OF 20 TO 30 DEGREES BELOW ZERO FOR TONIGHT THROUGH 9AM
  SATURDAY GENERALLY SOUTH OF HIGHWAY 20.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

&&

$$
095 
WWUS43 KDMX 020556
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
1156 PM CST FRI JAN 1 2010

...BRUTALLY COLD TEMPERATURES CONTINUE TO FILTER INTO CENTRAL
IOWA OVERNIGHT TONIGHT...

.ARCTIC HIGH PRESSURE WILL CONTINUE TO PUSH INTO CENTRAL IOWA AND
BRING A VERY COLD AND DRY AIR MASS TO THE STATE THROUGH SATURDAY.
CLEAR SKIES AND A FRESH SNOW PACK...PRIME COOLING CONDITIONS ARE
FORECAST THROUGH EARLY SATURDAY. IN ADDITION...THE PRESENCE OF A
NORTH WIND AT 10 TO 15 MPH WILL PRODUCE EXTREMELY DANGEROUS WIND
CHILL VALUES THROUGHOUT THE STATE.

IAZ004>007-015>017-023>028-033>039-021400-
/O.CON.KDMX.WC.W.0001.000000T0000Z-100102T1500Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...SAC CITY...
ROCKWELL CITY...FORT DODGE...WEBSTER CITY...ELDORA...
GRUNDY CENTER...WATERLOO
1156 PM CST FRI JAN 1 2010

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 9 AM CST SATURDAY...

A WIND CHILL WARNING REMAINS IN EFFECT UNTIL 9 AM CST SATURDAY. 

* WIND CHILL VALUES...EXPECT WIND CHILL VALUES TO CONTINUE TO
  RANGE FROM 30 TO 40 BELOW ZERO GENERALLY NORTH OF HIGHWAY 20
  THROUGH SATURDAY MORNING. THE LOWEST WIND CHILL VALUES ARE
  ANTICIPATED NEAR THE IOWA AND MINNESOTA BORDER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND
STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS
WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF
PRECAUTIONS ARE NOT TAKEN.

&&

$$

IAZ044>050-057>062-070>075-081>086-092>097-021400-
/O.CON.KDMX.WC.Y.0009.000000T0000Z-100102T1500Z/
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-
DECATUR-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...BOONE...
AMES...MARSHALLTOWN...TOLEDO...AUDUBON...GUTHRIE CENTER...ADEL...
DES MOINES...NEWTON...GRINNELL...ATLANTIC...GREENFIELD...
WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA...CORNING...
CRESTON...OSCEOLA...CHARITON...ALBIA...OTTUMWA...BEDFORD...
MOUNT AYR...LEON...CORYDON...CENTERVILLE...BLOOMFIELD
1156 PM CST FRI JAN 1 2010

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST
SATURDAY...

A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST SATURDAY. 

* WIND CHILL VALUES...WIND CHILL VALUES WILL CONTINUE TO DROP
  THROUGH THE OVERNIGHT HOURS INTO SATURDAY MORNING. WIND CHILL
  VALUES OF 20 TO 30 DEGREES BELOW ZERO THROUGH SATURDAY
  MORNING...GENERALLY SOUTH OF HIGHWAY 20.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

&&

$$
975 
WWUS43 KDMX 020917
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
317 AM CST SAT JAN 2 2010

...BRUTALLY COLD TEMPERATURES CONTINUE THROUGH THE MORNING...

.ARCTIC HIGH PRESSURE WILL CONTINUE OVER CENTRAL IOWA WITH A
BITTER COLD AND DRY AIR MASS THROUGH LATE MORNING. THE PRESENCE OF
A NORTH WIND AT 10 TO 15 MPH WILL PRODUCE EXTREMELY DANGEROUS WIND
CHILL VALUES THROUGHOUT THE STATE THROUGH THE MORNING HOURS.

IAZ004>007-015>017-023>028-033>039-021500-
/O.CON.KDMX.WC.W.0001.000000T0000Z-100102T1500Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...SAC CITY...
ROCKWELL CITY...FORT DODGE...WEBSTER CITY...ELDORA...
GRUNDY CENTER...WATERLOO
317 AM CST SAT JAN 2 2010

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS
MORNING... 

* WIND CHILL VALUES...EXPECT WIND CHILL VALUES TO CONTINUE TO 
  RANGE FROM 30 TO 40 BELOW ZERO GENERALLY NORTH OF HIGHWAY 20 
  THROUGH SATURDAY MORNING. THE LOWEST WIND CHILL VALUES ARE 
  ANTICIPATED NEAR THE IOWA AND MINNESOTA BORDER. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND
STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS
WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF
PRECAUTIONS ARE NOT TAKEN.

&&

$$

IAZ044>050-057>062-070>075-081>086-092>097-021500-
/O.CON.KDMX.WC.Y.0009.000000T0000Z-100102T1500Z/
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-
DECATUR-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...BOONE...
AMES...MARSHALLTOWN...TOLEDO...AUDUBON...GUTHRIE CENTER...ADEL...
DES MOINES...NEWTON...GRINNELL...ATLANTIC...GREENFIELD...
WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA...CORNING...
CRESTON...OSCEOLA...CHARITON...ALBIA...OTTUMWA...BEDFORD...
MOUNT AYR...LEON...CORYDON...CENTERVILLE...BLOOMFIELD
317 AM CST SAT JAN 2 2010

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS
MORNING...

* WIND CHILL VALUES...WIND CHILL VALUES WILL CONTINUE TO DROP 
  THROUGH THE OVERNIGHT HOURS INTO SATURDAY MORNING. WIND CHILL 
  VALUES OF 20 TO 30 DEGREES BELOW ZERO THROUGH SATURDAY 
  MORNING...GENERALLY SOUTH OF HIGHWAY 20. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

&&

$$

REV
353 
WWUS43 KDMX 021237
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
637 AM CST SAT JAN 2 2010

...BRUTALLY COLD TEMPERATURES CONTINUE THROUGH THIS MORNING...

.ARCTIC HIGH PRESSURE WILL CONTINUE OVER CENTRAL IOWA WITH A
BITTER COLD AND DRY AIR MASS THROUGH LATE MORNING. THE PRESENCE
OF A NORTH WIND AT 10 TO 15 MPH WILL PRODUCE EXTREMELY DANGEROUS
WIND CHILL VALUES THROUGHOUT THE STATE THROUGH THE MORNING HOURS.

IAZ004>007-015>017-023>028-033>039-021500-
/O.CON.KDMX.WC.W.0001.000000T0000Z-100102T1500Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...SAC CITY...
ROCKWELL CITY...FORT DODGE...WEBSTER CITY...ELDORA...
GRUNDY CENTER...WATERLOO
637 AM CST SAT JAN 2 2010

...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS
MORNING...

* VERY DANGEROUS WIND CHILL VALUES...EXPECT WIND CHILL VALUES TO
  CONTINUE TO RANGE FROM 30 TO 50 BELOW ZERO GENERALLY NORTH OF
  HIGHWAY 20 THROUGH THIS MORNING. THE LOWEST WIND CHILL VALUES
  ARE ANTICIPATED NEAR THE IOWA AND MINNESOTA BORDER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND
STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS
WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF
PRECAUTIONS ARE NOT TAKEN.

&&

$$

IAZ044>050-057>062-070>075-081>086-092>097-021500-
/O.CON.KDMX.WC.Y.0009.000000T0000Z-100102T1500Z/
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-
DECATUR-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...BOONE...
AMES...MARSHALLTOWN...TOLEDO...AUDUBON...GUTHRIE CENTER...ADEL...
DES MOINES...NEWTON...GRINNELL...ATLANTIC...GREENFIELD...
WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA...CORNING...
CRESTON...OSCEOLA...CHARITON...ALBIA...OTTUMWA...BEDFORD...
MOUNT AYR...LEON...CORYDON...CENTERVILLE...BLOOMFIELD
637 AM CST SAT JAN 2 2010

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS
MORNING... 


* WIND CHILL VALUES...DANGEROUS WIND CHILL VALUES WILL CONTINUE.
  WIND CHILL VALUES OF 20 TO 35 DEGREES BELOW ZERO ARE EXPECTED THROUGH
  THIS MORNING...GENERALLY SOUTH OF HIGHWAY 20.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

&&

$$

REV
561 
WWUS43 KDMX 021514
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
914 AM CST SAT JAN 2 2010

...VERY COLD TEMPERATURES WILL CONTINUE TODAY...

.ARCTIC HIGH PRESSURE WILL REMAIN OVER IOWA THIS AFTERNOON WITH A
BITTER COLD AIRMASS THROUGH THE DAY. ALTHOUGH WIND SPEEDS SHOULD
BE ONLY RANGE FROM 5 TO 10 MPH...WIND CHILL TEMPERATURES WILL
REMAIN DANGEROUSLY COLD ACROSS NORTHERN IOWA.

IAZ004>007-015>017-023>028-035>039-022315-
/O.EXP.KDMX.WC.W.0001.000000T0000Z-100102T1500Z/
/O.NEW.KDMX.WC.Y.0010.100102T1514Z-100103T0000Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-WEBSTER-
HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...FORT DODGE...
WEBSTER CITY...ELDORA...GRUNDY CENTER...WATERLOO
914 AM CST SAT JAN 2 2010

...WIND CHILL ADVISORY IN EFFECT UNTIL 6 PM CST THIS EVENING...
...WIND CHILL WARNING HAS EXPIRED...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WIND
CHILL ADVISORY...WHICH IS IN EFFECT UNTIL 6 PM CST THIS EVENING.
THE WIND CHILL WARNING IS NO LONGER IN EFFECT. 

* SHORT TERM TRENDS...WIND CHILL TEMPERATURES WILL SLOWLY IMPROVE
  THROUGH NOON. VALUES INITIALLY FROM 30 TO 50 BELOW ZERO WILL
  MODERATE TO 20 TO 30 BELOW ZERO BY LATE MORNING.

* WIND CHILL VALUES...LOOK FOR WIND CHILL VALUES TO RANGE FROM 20
  TO 30 BELOW ZERO THROUGH THE AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. 
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

&&

$$

IAZ033-034-021615-
/O.EXP.KDMX.WC.W.0001.000000T0000Z-100102T1500Z/
SAC-CALHOUN-
INCLUDING THE CITIES OF...SAC CITY...ROCKWELL CITY
914 AM CST SAT JAN 2 2010

...WIND CHILL WARNING HAS EXPIRED...

THE WIND CHILL WARNING IS NO LONGER IN EFFECT. 

* SHORT TERM TRENDS...IT WILL REMAIN BITTERLY COLD THIS MORNING AS
  TEMPERATURES SLOWLY CLIMB TO 5 TO 10 BELOW. WIND CHILL
  TEMPERATURES WILL IMPROVE TO ABOVE 20 BELOW ZERO BY LATE MORNING.

$$

IAZ044>050-057>062-070>075-081>086-092>097-021615-
/O.EXP.KDMX.WC.Y.0009.000000T0000Z-100102T1500Z/
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-
DECATUR-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...BOONE...
AMES...MARSHALLTOWN...TOLEDO...AUDUBON...GUTHRIE CENTER...ADEL...
DES MOINES...NEWTON...GRINNELL...ATLANTIC...GREENFIELD...
WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA...CORNING...
CRESTON...OSCEOLA...CHARITON...ALBIA...OTTUMWA...BEDFORD...
MOUNT AYR...LEON...CORYDON...CENTERVILLE...BLOOMFIELD
914 AM CST SAT JAN 2 2010

...WIND CHILL ADVISORY HAS EXPIRED...

THE WIND CHILL ADVISORY IS NO LONGER IN EFFECT. 

* SHORT TERM TRENDS...IT WILL REMAIN BITTERLY COLD THIS MORNING AS
  TEMPERATURES SLOWLY CLIMB TO ZERO TO 5 BELOW. WIND CHILL
  TEMPERATURES WILL IMPROVE TO ABOVE 20 BELOW ZERO LATE THIS
  MORNING.

$$

JOHNSON

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 Des Moines, IA wrote its last area forecast discussion before this wind chill warning went out at Jan 1, 11:35 AM CST, 2 hours 49 minutes earlier.

Area forecast discussion, Jan 1, 11:35 AM CST, 2 hours 49 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE DES MOINES IA
1135 AM CST FRI JAN 1 2010

.UPDATED AVIATION DISCUSSION 01/18Z.

.SHORT TERM /TODAY/...

ARCTIC HIGH PRESSURE BUILDING SOUTH TODAY WILL CONTINUE THE TREND
TOWARD MUCH COLDER TEMPERATURES FOR THE REMAINDER OF NEW YEARS DAY.
NOTHING CHANGES NEW YEARS DAY...YOU TOO...CAN SING IT. SUBJECTIVE
SURFACE ANALYSIS SHOWS WEAK LEE SIDE TROUGHING OVER SOUTHEAST
WYOMING AT 06Z...A WEAK UPPER LEVEL DISTURBANCE AT H700...COUPLED
WITH SOME WEAK FRONTOGENETICAL FORCING BETWEEN 12 AND 18Z THIS AM
SHOULD RESULT IN A PERIOD OF LIGHT SNOW OVER THE SOUTHWEST. THOUGH
MOISTURE PROFILES REMAIN RATHER MEAGER...THE COLD AIR ARRIVING
SHOULD BE ENOUGH TO SQUEEZE OUT A FEW HUNDREDTHS OVER THE SOUTHWEST
REACHES OF THE FORECAST AREA. COUPLED WITH SNOW RATIOS APPROACHING
17:1 FOR THE MORNING HOURS...AND A TRACE TO 0.5 INCHES (MAX) IS
POSSIBLE OVER THE SOUTHWEST THIRD OF THE AREA. THE METRO MAY RECEIVE
A BIT MORE THAN A TRACE...ENOUGH TO DUST THE SIDEWALK. H850 COLD AIR
ADVECTION WILL REMAIN FOR THE ENTIRE DAY WITH TEMPS SLIDING OFF FROM
-8C SOUTH TO -16C NORTH AT 12Z TO -13C SOUTH TO -18C NORTH BY 00Z.
THOUGH SOME SUN MAY RETURN BY LATE AFTERNOON...LITTLE RISE IN TEMP
IS EXPECTED DUE TO THE BULK OF THE DAY BEING PARTLY SUNNY TO CLOUDY.
AS THE HIGH PINCHES SOUTHWARD DURING THE LATE MORNING HOURS...A
PERIOD OF STRONGER MIXING WILL OCCUR FROM LATE MORNING THROUGH
AFTERNOON. THIS WILL RESULT IN SOME WIND GUSTS TO OVER 20 MPH AND
MAINTAIN QUITE A CHILL IN THE AIR. WILL ALLOW THE WC.Y ADVISORY TO
EXPIRE AT 9 AM AS VALUES WILL GENERALLY REMAIN ABOVE CRITERIA FOR
THE BALANCE OF THE DAYLIGHT HOURS.

.LONG TERM /TONIGHT THROUGH THURSDAY/...

LARGE ARCTIC HIGH PRESSURE WILL CONTINUE TO DOMINATE THE WEATHER
ACRS IOWA DURING THE LONG TERM PERIOD.  SUBSIDENCE WILL INCREASE
QUICKLY THIS EVENING ON BACKSIDE OF DEPARTING SYSTEM WITH RAPID
CLEARING IN THE EVENING.  WITH NO CLOUDS...LIGHT NORTH WINDS AND
AMPLE ARCTIC AIR...OVERNIGHT LOWS SHOULD DROP TO WELL BELOW ZERO IN
CENTRAL IOWA.  READINGS OF -20 OR LOWER ARE EXPECTED IN OUR FAR
NORTHWEST OVER THE DEEP SNOWPACK AND CLOSER TO THE CENTER OF THE
HIGH.  IT IS LIKELY THAT WIND CHILL HEADLINES WILL BE NEEDED ONCE
AGAIN AS TEMPS PLUMMET AND WINDS PUSH VALUES FROM 20 TO 35 BELOW
ZERO IN MUCH OF THE CWA.  DESPITE RELATIVELY SUNNY SKIES ON
SATURDAY...LITTLE REBOUND IN TEMPS IS EXPECTED WITH READINGS BELOW
ZERO FOR DAYTIME HIGHS ACRS THE NORTHERN HALF OF THE AREA.  WL
LIKELY BEGIN TO SEE SOME INCREASE IN CLOUDS IN THE WEST BY AFTERNOON
AS THE NEXT IN A SERIES OF WAVES DROPS THROUGH THE PLAINS.  WILL SEE
SOME DECENT QG FORCING AND ISENTROPIC LIFT IN OUR FAR WEST BY
SATURDAY NIGHT AND LIKELY WL SEE SOME LIGHT SNOW OR FLURRIES GRAZING
OUR WEST DURING THE OVERNIGHT INTO SUNDAY MORNING.  AT THIS POINT...
ACCUMULATIONS WOULD BE RATHER LIGHT IN LOCATIONS THAT DO SEE THE
SNOW.  HOWEVER...THE NORTHEAST HALF OF THE CWA SHOULD REMAIN NEARLY
CLOUD FREE DURING THIS TIME WITH TEMPERATURES AGAIN PLUMMETING ON
SATURDAY NIGHT WITH LIGHT WINDS AND STRONG RADIATIONAL COOLING.
LITTLE CHANGE IS FORESEEN INTO EARLY NEXT WEEK WITH THE RIDGE AXIS
SITTING ACRS CENTRAL IA WITH AMPLE ARCTIC AIR TO KEEP TEMPERATURES
WELL BELOW NORMAL.

WILL HAVE TO WATCH A SYSTEM TOWARD THE MIDDLE OF NEXT WEEK THE DROPS
OUT OF CANADA AND INTENSIFIES ACRS THE CENTRAL US.  BOTH GFS AND
EURO PRODUCE SOME SNOW ACRS IA ON WEDNESDAY FOLLOWED BY ANOTHER VERY
COLD SHOT OF ARCTIC AIR.  WELCOME TO THE NEW YEAR!!

&&

.AVIATION...
01/18Z...ARCTIC HIGH PLOWING DOWN ON A NORTHERLY WIND AT 10-15 KTS
WILL BRING CLEARING CONDITIONS TO THE TAF LOCATIONS.  TIMING ON THE
THE CONDITIONS BECOMING VFR IS ROUGHLY BY 21Z FOR KFOD/KALO...BY 00Z
AROUND KDSM AND BY 03Z FOR KOTM.  A NORTH WIND AROUND 10 KTS WILL
MAINTAIN ITSELF OVERNIGHT.

&&

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

&&

SHORT TERM/AVIATION...FAB
LONG TERM...COGIL
Hazardous weather outlook, Jan 1, 2:24 PM CST, 0 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
224 PM CST FRI JAN 1 2010

IAZ044>050-057>062-070>075-081>086-092>097-022030-
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-
DECATUR-WAYNE-APPANOOSE-DAVIS-
224 PM CST FRI JAN 1 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR A PORTION OF CENTRAL IOWA
MAINLY SOUTH OF HIGHWAY 20.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A WIND CHILL ADVISORY IS IN EFFECT FOR THE AREA TONIGHT. PLEASE
REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT
WEATHER.GOV/DESMOINES FOR FURTHER DETAILS. VERY COLD TEMPERATURES
TONIGHT COMBINED WITH A NORTH WIND AT 10 TO 15 MPH WILL PRODUCE
WIND CHILL VALUES FROM 20 TO 30 BELOW NORTH OF INTERSTATE 80 IN
THE ADVISORY AREA WITH WIND CHILL VALUES AROUND 20 BELOW FROM THE
MISSOURI BORDER TO THE INTERSTATE 80 CORRIDOR.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A WIND CHILL ADVISORY IS IN EFFECT FOR THE AREA THROUGH 9 AM
SATURDAY. PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT
WEATHER.GOV/DESMOINES FOR FURTHER DETAILS.  TEMPERATURES WILL BE
BITTERLY COLD FOR A PROLONGED PERIOD. LOWS WILL FREQUENTLY BE
BELOW ZERO THROUGH EARLY NEXT WEEK WITH A LIGHT TO MODERATE
NORTHWEST WIND. WIND CHILL READINGS MAY DIP INTO THE TEENS AND
20S BELOW ZERO AT TIMES AND ADDITIONAL WIND CHILL ADVISORIES MAY
BE NEEDED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

IAZ004>007-015>017-023>028-033>039-022030-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
224 PM CST FRI JAN 1 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR A PORTION OF CENTRAL IOWA
MAINLY ALONG AND NORTH OF HIGHWAY 20.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A WIND CHILL WARNING IS IN EFFECT FOR THE AREA TONIGHT. PLEASE REFER TO
THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR
FURTHER DETAILS. NEAR RECORD LOW TEMPERATURES WILL OCCUR IN THE
WARNING AREA TONIGHT AND THE BRUTALLY COLD TEMPERATURES COMBINED
WITH A NORTH WIND AT 10 TO 15 MPH WILL PRODUCE WIND CHILL VALUES
FROM 35 TO 40 DEGREES BELOW ZERO.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A WIND CHILL WARNING IS IN EFFECT FOR THE AREA THROUGH 9 AM
SATURDAY. PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT
WEATHER.GOV/DESMOINES FOR FURTHER DETAILS.  ARCTIC HIGH PRESSURE
WILL CONTINUE TO BE PART OF THE WEATHER STORY INTO NEXT WEEK AND
ADDITIONAL WIND CHILL ADVISORIES OR WARNINGS WILL LIKELY BE
NEEDED THROUGH THAT TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

FAB

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 1, 2:24 PM CSTWind Chill AdvisoryDMXAdair, Adams, Appanoose, Audubon, Boone, Carroll and 25 more19 hr

Nearby

Wind Chill Warnings in Iowa, 2010Every wind chill warning in 2010

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.