Alert archive / Iowa / Wind Chill Warnings in 2008
Wind Chill Warning 4, NWS Des Moines, IA
NWS Des Moines, IA issued this wind chill warning at Dec 21, 2008, 3:46 AM CST for 39 counties in Iowa. It took effect at Dec 21, 2008, 3:01 PM CST. It was in force for 13 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
- Dec 21, 2008, 3:46 AM CST (09:46 UTC)
- In effect from
- Dec 21, 2008, 3:01 PM CST
- Expired
- Dec 22, 2008, 4:00 AM CST
- In force
- 13 hr
- Issued by
- NWS Des Moines, IA
All 39 counties
Adair County, IA, Audubon County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cerro Gordo County, IA, Crawford County, IA, Dallas County, IA, Emmet County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Humboldt County, IA, Jasper County, IA, Kossuth County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Palo Alto County, IA, Pocahontas County, IA, Polk County, IA, Poweshiek County, IA, Sac County, IA, Story County, IA, Tama County, IA, Warren County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA
The radar
The Des Moines radar (KDMX), 59 km from the middle of the area, began a volume at 09:50 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
Omaha, NE (KOAX), launched 00:00Z, 9.8 hours before the alert went out and 239 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 950 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- -176 m²/s²
- 0-3 km storm-relative helicity
- -47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS43 KDMX 210946 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 346 AM CST SUN DEC 21 2008 ...BLIZZARD CONDITIONS AND EXTREME COLD FOR CENTRAL IOWA... .A STRONG NORTHWEST WIND ALONG WITH ALL OF THE RECENT FRESH SNOWFALL WILL RESULT IN A LONG PERIOD OF NEAR ZERO VISIBILITY IN BLOWING AND DRIFTING SNOW ACROSS NORTHERN IOWA...NORTH OF HIGHWAY 30. IN ADDITION...PLUMMETING TEMPERATURES COMBINED WITH THE WIND WILL RESULT IN DANGEROUSLY COLD WIND CHILLS BETWEEN 20 BELOW AND 40 BELOW ZERO TODAY. ALTHOUGH WINDS WILL BE DIMINISHING LATE THIS AFTERNOON...DANGEROUS WIND CHILL VALUES COLDER THAN 20 BELOW ZERO WILL CONTINUE SUNDAY NIGHT AS TEMPERATURES FALL EVEN FURTHER. IAZ004>007-015>017-023>028-033>039-044>050-211815- /O.NEW.KDMX.WC.W.0004.081222T0000Z-081222T1000Z/ /O.CON.KDMX.BZ.W.0003.000000T0000Z-081222T0000Z/ EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN- WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE- BOONE-STORY-MARSHALL-TAMA- 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...DENISON...CARROLL...JEFFERSON... BOONE...AMES...MARSHALLTOWN...TOLEDO 346 AM CST SUN DEC 21 2008 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON... ...WIND CHILL WARNING IN EFFECT FROM 6 PM THIS EVENING TO 4 AM CST MONDAY... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WIND CHILL WARNING...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 4 AM CST MONDAY. A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON. NORTHWEST WINDS OF 20 TO 25 MPH WITH GUSTS NEAR 35 MPH EARLY THIS MORNING WILL INCREASE TO 25 TO 30 MPH WITH GUSTS UP TO 45 MPH BY MID MORNING. LAW ENFORCEMENT OFFICIALS ACROSS NORTHERN IOWA HAVE ALREADY REPORTED NEAR ZERO VISIBILITY AT TIMES IN OPEN AREAS DUE TO BLOWING SNOW. SIGNIFICANT DRIFTING IS ALSO OCCURRING...ESPECIALLY SECONDARY AND GRAVEL ROADS. TRAVEL IS NOT ADVISED ACROSS MUCH OF NORTHERN IOWA. IN ADDITION TO THE BLIZZARD CONDITIONS...THE COMBINATION OF ARCTIC TEMPERATURES AND STRONG WINDS WILL GENERATE BITTERLY COLD WIND CHILLS VALUES AS LOW AS 30 TO 40 BELOW TODAY INTO TONIGHT. A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. IN THIS CASE...BLOWING SNOW DUE TO STRONG WINDS WILL CAUSE VERY POOR VISIBILITY. IN SOME LOCATIONS THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. 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. $$ IAZ057>062-070>075-081>086-092>097-211815- /O.EXT.KDMX.WC.Y.0012.000000T0000Z-081222T1000Z/ AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON- WARREN-MARION-MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO- TAYLOR-RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS- INCLUDING THE CITIES OF...AUDUBON...GUTHRIE CENTER...ADEL... DES MOINES...NEWTON...GRINNELL...ATLANTIC...GREENFIELD... WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA...CORNING... CRESTON...OSCEOLA...CHARITON...ALBIA...OTTUMWA...BEDFORD... MOUNT AYR...LEON...CORYDON...CENTERVILLE...BLOOMFIELD 346 AM CST SUN DEC 21 2008 ...WIND CHILL ADVISORY NOW IN EFFECT UNTIL 4 AM CST MONDAY... THE WIND CHILL ADVISORY IS NOW IN EFFECT UNTIL 4 AM CST MONDAY. BITTERLY COLD TEMPERATURES WILL COMBINE WITH WINDS INCREASING TO 25 TO 30 MPH WITH HIGHER GUSTS...TO PRODUCE BITTERLY COLD WIND CHILLS VALUES BETWEEN 20 BELOW AND 30 BELOW ZERO. THESE CONDITIONS WILL CONTINUE THROUGH TODAY AND INTO TONIGHT. A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND GLOVES. $$ LEE
5 follow-up statements
000 WWUS43 KDMX 211637 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 1037 AM CST SUN DEC 21 2008 ...BLIZZARD CONDITIONS AND EXTREME COLD FOR CENTRAL IOWA... .A STRONG NORTHWEST WIND ALONG WITH ALL OF THE RECENT FRESH SNOWFALL WILL RESULT IN A LONG PERIOD OF NEAR ZERO VISIBILITY IN BLOWING AND DRIFTING SNOW ACROSS NORTHERN IOWA...NORTH OF HIGHWAY 30. IN ADDITION...ARCTIC TEMPERATURES COMBINED WITH THE WIND WILL RESULT IN DANGEROUSLY COLD WIND CHILLS BETWEEN 20 BELOW AND 40 BELOW ZERO TODAY. ALTHOUGH WINDS WILL BE DIMINISHING LATE THIS AFTERNOON...DANGEROUS WIND CHILL VALUES COLDER THAN 20 BELOW ZERO WILL CONTINUE SUNDAY NIGHT AS TEMPERATURES FALL WELL BELOW ZERO. IAZ004>007-015>017-023>028-033>039-044>050-220045- /O.CON.KDMX.BZ.W.0003.000000T0000Z-081222T0000Z/ /O.CON.KDMX.WC.W.0004.081222T0000Z-081222T1000Z/ EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN- WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE- BOONE-STORY-MARSHALL-TAMA- 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...DENISON...CARROLL...JEFFERSON... BOONE...AMES...MARSHALLTOWN...TOLEDO 1037 AM CST SUN DEC 21 2008 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON... ...WIND CHILL WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 4 AM CST MONDAY... A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON. A WIND CHILL WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 4 AM CST MONDAY. NORTHWEST WINDS WILL BLOW 25 TO 30 MPH WITH GUSTS UP TO 45 MPH THROUGH THE AFTERNOON. LAW ENFORCEMENT OFFICIALS ACROSS NORTHERN IOWA CONTINUE TO REPORT NEAR ZERO VISIBILITY AT TIMES IN OPEN AREAS DUE TO BLOWING SNOW. SIGNIFICANT DRIFTING IS ALSO OCCURRING...ESPECIALLY ON SECONDARY AND GRAVEL ROADS. IN ADDITION TO THE GROUND BLIZZARD CONDITIONS...THE COMBINATION OF ARCTIC TEMPERATURES AND STRONG WINDS WILL GENERATE BITTERLY COLD WIND CHILLS VALUES AS LOW AS 30 BELOW TO 40 BELOW ZERO THROUGH TONIGHT. A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. IN THIS CASE...BLOWING SNOW DUE TO STRONG WINDS WILL CAUSE VERY POOR VISIBILITY. IN SOME LOCATIONS THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. 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. $$ IAZ057>062-070>075-081>086-092>097-220045- /O.CON.KDMX.WC.Y.0012.000000T0000Z-081222T1000Z/ AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON- WARREN-MARION-MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO- TAYLOR-RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS- INCLUDING THE CITIES OF...AUDUBON...GUTHRIE CENTER...ADEL... DES MOINES...NEWTON...GRINNELL...ATLANTIC...GREENFIELD... WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA...CORNING... CRESTON...OSCEOLA...CHARITON...ALBIA...OTTUMWA...BEDFORD... MOUNT AYR...LEON...CORYDON...CENTERVILLE...BLOOMFIELD 1037 AM CST SUN DEC 21 2008 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST MONDAY... A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST MONDAY. BITTERLY COLD TEMPERATURES WILL COMBINE WITH WINDS 20 TO 30 MPH WITH GUSTS OVER 40 MPH...TO PRODUCE BITTERLY COLD WIND CHILL VALUES BETWEEN 20 BELOW AND 30 BELOW ZERO. THESE BITTERLY COLD WIND CHILL TEMPERATURES WILL CONTINUE THROUGH TONIGHT...THOUGH WINDS WILL SLOWLY DIMINISH THROUGH THE EVENING HOURS. A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND GLOVES. $$ MOYER
000 WWUS43 KDMX 212101 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 301 PM CST SUN DEC 21 2008 ...BLIZZARD CONDITIONS THROUGH EARLY EVENING AND EXTREME COLD CONTINUING TONIGHT... .A STRONG NORTHWEST WIND WILL CONTINUE 25 TO 45 MPH LATE THIS AFTERNOON...RESULTING IN NEAR ZERO VISIBILITY IN BLOWING AND DRIFTING SNOW ACROSS NORTHERN IOWA...NORTH OF HIGHWAY 30. IN ADDITION...ARCTIC TEMPERATURES COMBINED WITH THE WIND WILL RESULT IN DANGEROUSLY COLD WIND CHILLS BETWEEN 20 BELOW AND 40 BELOW ZERO THROUGH TONIGHT. IAZ057>062-070>075-220515- /O.UPG.KDMX.WC.Y.0012.000000T0000Z-081222T1000Z/ /O.EXB.KDMX.WC.W.0004.081221T2101Z-081222T1000Z/ AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON- WARREN-MARION-MAHASKA- INCLUDING THE CITIES OF...AUDUBON...GUTHRIE CENTER...ADEL... DES MOINES...NEWTON...GRINNELL...ATLANTIC...GREENFIELD... WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA 301 PM CST SUN DEC 21 2008 ...WIND CHILL WARNING IN EFFECT UNTIL 4 AM CST MONDAY... THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WIND CHILL WARNING...WHICH IS IN EFFECT UNTIL 4 AM CST MONDAY. THE WIND CHILL ADVISORY IS NO LONGER IN EFFECT. BITTERLY COLD TEMPERATURES WILL COMBINE WITH WINDS 20 TO 30 MPH AND GUSTS OVER 40 MPH...TO PRODUCE BITTERLY COLD WIND CHILL VALUES BETWEEN 25 BELOW AND 35 BELOW ZERO. THESE BITTERLY COLD WIND CHILL TEMPERATURES WILL CONTINUE THROUGH TONIGHT...THOUGH WINDS WILL SLOWLY DIMINISH THROUGH THE EVENING HOURS. 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. $$ IAZ004>007-015>017-023>028-033>039-044>050-220515- /O.CON.KDMX.BZ.W.0003.000000T0000Z-081222T0000Z/ /O.CON.KDMX.WC.W.0004.081222T0000Z-081222T1000Z/ EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN- WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE- BOONE-STORY-MARSHALL-TAMA- 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...DENISON...CARROLL...JEFFERSON... BOONE...AMES...MARSHALLTOWN...TOLEDO 301 PM CST SUN DEC 21 2008 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON... ...WIND CHILL WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 4 AM CST MONDAY... A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON. A WIND CHILL WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 4 AM CST MONDAY. NORTHWEST WINDS WILL BLOW 25 TO 30 MPH WITH GUSTS UP TO 45 MPH THROUGH THE AFTERNOON. LAW ENFORCEMENT OFFICIALS ACROSS NORTHERN IOWA CONTINUE TO REPORT NEAR ZERO VISIBILITY AT TIMES IN OPEN AREAS DUE TO BLOWING SNOW. SIGNIFICANT DRIFTING IS ALSO OCCURRING...CAUSING MANY ROADS TO BE IMPASSABLE. IN ADDITION TO THE GROUND BLIZZARD CONDITIONS...THE COMBINATION OF ARCTIC TEMPERATURES AND STRONG WINDS WILL GENERATE BITTERLY COLD WIND CHILLS VALUES AS LOW AS 30 BELOW TO 40 BELOW ZERO THROUGH TONIGHT. A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. IN THIS CASE...BLOWING SNOW DUE TO STRONG WINDS WILL CAUSE VERY POOR VISIBILITY. IN SOME LOCATIONS THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR VEHICLE. 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. $$ IAZ081>086-092>097-220515- /O.CON.KDMX.WC.Y.0012.000000T0000Z-081222T1000Z/ ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-DECATUR- WAYNE-APPANOOSE-DAVIS- INCLUDING THE CITIES OF...CORNING...CRESTON...OSCEOLA... CHARITON...ALBIA...OTTUMWA...BEDFORD...MOUNT AYR...LEON... CORYDON...CENTERVILLE...BLOOMFIELD 301 PM CST SUN DEC 21 2008 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST MONDAY... A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST MONDAY. BITTERLY COLD TEMPERATURES WILL COMBINE WITH WINDS 20 TO 30 MPH AND GUSTS OVER 40 MPH...TO PRODUCE BITTERLY COLD WIND CHILL VALUES BETWEEN 20 BELOW AND 30 BELOW ZERO. THESE BITTERLY COLD WIND CHILL TEMPERATURES WILL CONTINUE THROUGH TONIGHT...THOUGH WINDS WILL SLOWLY DIMINISH THROUGH THE EVENING HOURS. 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. $$ MOYER
000 WWUS43 KDMX 220011 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 611 PM CST SUN DEC 21 2008 ...EXTREME COLD CONTINUING TONIGHT... IAZ004>007-015>017-023>028-033>039-044>050-220815- /O.EXP.KDMX.BZ.W.0003.000000T0000Z-081222T0000Z/ /O.CON.KDMX.WC.W.0004.000000T0000Z-081222T1000Z/ EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN- WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE- BOONE-STORY-MARSHALL-TAMA- INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY... NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS... HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...SAC CITY... ROCKWELL CITY...FORT DODGE...WEBSTER CITY...ELDORA... GRUNDY CENTER...WATERLOO...DENISON...CARROLL...JEFFERSON... BOONE...AMES...MARSHALLTOWN...TOLEDO 611 PM CST SUN DEC 21 2008 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 4 AM CST MONDAY... ...BLIZZARD WARNING HAS EXPIRED... THE BLIZZARD WARNING IS NO LONGER IN EFFECT. A WIND CHILL WARNING REMAINS IN EFFECT UNTIL 4 AM CST MONDAY. A STRONG NORTHWEST WIND WILL CONTINUE TO GRADUALLY DIMINISH THIS EVENING. THE THREAT FOR SIGNIFICANT REDUCTIONS IN VISIBILITY DUE TO BLOWING SNOW HAS ENDED...ALTHOUGH SOME ADDITIONAL DRIFTING OF SNOW MAY OCCUR IN OPEN AREAS THROUGH LATE EVENING. THE COMBINATION OF ARCTIC TEMPERATURES AND STRONG WINDS WILL GENERATE BITTERLY COLD WIND CHILLS VALUES AS LOW AS 30 BELOW TO 40 BELOW ZERO THROUGH TONIGHT. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$ IAZ057>062-070>075-220815- /O.CON.KDMX.WC.W.0004.000000T0000Z-081222T1000Z/ AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON- WARREN-MARION-MAHASKA- INCLUDING THE CITIES OF...AUDUBON...GUTHRIE CENTER...ADEL... DES MOINES...NEWTON...GRINNELL...ATLANTIC...GREENFIELD... WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA 611 PM CST SUN DEC 21 2008 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 4 AM CST MONDAY... A WIND CHILL WARNING REMAINS IN EFFECT UNTIL 4 AM CST MONDAY. BITTERLY COLD TEMPERATURES WILL COMBINE WITH A STRONG NORTHWEST WIND20 TO PRODUCE BITTERLY COLD WIND CHILL VALUES BETWEEN 25 BELOW AND 35 BELOW ZERO. THESE BITTERLY COLD WIND CHILL TEMPERATURES WILL CONTINUE THROUGH TONIGHT...THOUGH WINDS WILL SLOWLY DIMINISH THROUGH THE EVENING HOURS. 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. $$ IAZ081>086-092>097-220815- /O.CON.KDMX.WC.Y.0012.000000T0000Z-081222T1000Z/ ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-DECATUR- WAYNE-APPANOOSE-DAVIS- INCLUDING THE CITIES OF...CORNING...CRESTON...OSCEOLA... CHARITON...ALBIA...OTTUMWA...BEDFORD...MOUNT AYR...LEON... CORYDON...CENTERVILLE...BLOOMFIELD 611 PM CST SUN DEC 21 2008 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST MONDAY... A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST MONDAY. BITTERLY COLD TEMPERATURES WILL COMBINE WITH A BRISK NORTHWEST WIND TO PRODUCE BITTERLY COLD WIND CHILL VALUES BETWEEN 20 BELOW AND 30 BELOW ZERO. THESE BITTERLY COLD WIND CHILL TEMPERATURES WILL CONTINUE THROUGH TONIGHT...THOUGH WINDS WILL SLOWLY DIMINISH THROUGH THE EVENING HOURS. A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND GLOVES. $$ KINNEY
000 WWUS43 KDMX 220249 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 849 PM CST SUN DEC 21 2008 ...EXTREME COLD CONTINUING TONIGHT... IAZ004>007-015>017-023>028-033>039-044>050-221000- /O.CON.KDMX.WC.W.0004.000000T0000Z-081222T1000Z/ EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN- WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE- BOONE-STORY-MARSHALL-TAMA- 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...DENISON...CARROLL...JEFFERSON... BOONE...AMES...MARSHALLTOWN...TOLEDO 849 PM CST SUN DEC 21 2008 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 4 AM CST MONDAY... A WIND CHILL WARNING REMAINS IN EFFECT UNTIL 4 AM CST MONDAY. THE COMBINATION OF ARCTIC TEMPERATURES AND A BRISK NORTHWEST WIND WILL GENERATE BITTERLY COLD WIND CHILLS VALUES AS LOW AS 30 BELOW TO 40 BELOW ZERO OVERNIGHT. 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. $$ IAZ057>062-070>075-221000- /O.CON.KDMX.WC.W.0004.000000T0000Z-081222T1000Z/ AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON- WARREN-MARION-MAHASKA- INCLUDING THE CITIES OF...AUDUBON...GUTHRIE CENTER...ADEL... DES MOINES...NEWTON...GRINNELL...ATLANTIC...GREENFIELD... WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA 849 PM CST SUN DEC 21 2008 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 4 AM CST MONDAY... A WIND CHILL WARNING REMAINS IN EFFECT UNTIL 4 AM CST MONDAY. THE COMBINATION OF ARCTIC TEMPERATURES AND A BRISK NORTHWEST WIND WILL GENERATE BITTERLY COLD WIND CHILL VALUES OF 25 TO 35 BELOW ZERO OVERNIGHT. A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF PRECAUTIONS ARE NOT TAKEN. $$ IAZ081>086-092>097-221000- /O.CON.KDMX.WC.Y.0012.000000T0000Z-081222T1000Z/ ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-DECATUR- WAYNE-APPANOOSE-DAVIS- INCLUDING THE CITIES OF...CORNING...CRESTON...OSCEOLA... CHARITON...ALBIA...OTTUMWA...BEDFORD...MOUNT AYR...LEON... CORYDON...CENTERVILLE...BLOOMFIELD 849 PM CST SUN DEC 21 2008 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST MONDAY... A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 4 AM CST MONDAY. THE COMBINATION OF ARCTIC TEMPERATURES AND A BRISK NORTHWEST WIND WILL GENERATE BITTERLY COLD WIND CHILL VALUES OF 20 TO 30 BELOW ZERO OVERNIGHT. 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. $$
000 WWUS43 KDMX 221003 WSWDMX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE DES MOINES IA 403 AM CST MON DEC 22 2008 ...WINDS MUCH LIGHTER BUT BITTERLY COLD TEMPERATURES REMAIN... .WINDS HAVE DIMINISHED SUBSTANTIALLY OVERNIGHT AND ARE NOW 10 MPH OR LESS ACROSS IOWA. WHILE TEMPERATURES HAVE PLUNGED TO WELL BELOW ZERO IN MOST LOCATIONS...THE LIGHT WINDS ARE NOT ADDING A SUBSTANTIAL WIND CHILL EFFECT. THEREFORE...THE WIND CHILL WARNING AND ADVISORY HAVE BEEN ALLOWED TO EXPIRE. IAZ004>007-015>017-023>028-033>039-044>050-221115- /O.EXP.KDMX.WC.W.0004.000000T0000Z-081222T1000Z/ EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN- WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE- BOONE-STORY-MARSHALL-TAMA- INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY... NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS... HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...SAC CITY... ROCKWELL CITY...FORT DODGE...WEBSTER CITY...ELDORA... GRUNDY CENTER...WATERLOO...DENISON...CARROLL...JEFFERSON... BOONE...AMES...MARSHALLTOWN...TOLEDO 403 AM CST MON DEC 22 2008 ...WIND CHILL WARNING WILL EXPIRE AT 4 AM CST EARLY THIS MORNING... THE WIND CHILL WARNING WILL EXPIRE AT 4 AM CST EARLY THIS MORNING. WINDS HAVE DECREASED SUBSTANTIALLY OVERNIGHT AND ARE NOW IN THE 5 TO 10 MPH RANGE. WHILE TEMPERATURES REMAIN BITTERLY COLD WITH READINGS AROUND 10 BELOW AND STILL SLOWLY FALLING...THE LIGHT WINDS ARE NOT ADDING A SIGNIFICANT WIND CHILL EFFECT. THEREFORE THE WIND CHILL WARNING HAS BEEN ALLOWED TO EXPIRE. HOWEVER...TEMPERATURES WILL REMAIN VERY COLD THIS MORNING. IF YOU MUST VENTURE OUTSIDE...BE SURE YOU HAVE ADEQUATE PROTECTION. $$ IAZ057>062-070>075-221115- /O.EXP.KDMX.WC.W.0004.000000T0000Z-081222T1000Z/ AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON- WARREN-MARION-MAHASKA- INCLUDING THE CITIES OF...AUDUBON...GUTHRIE CENTER...ADEL... DES MOINES...NEWTON...GRINNELL...ATLANTIC...GREENFIELD... WINTERSET...INDIANOLA...KNOXVILLE...OSKALOOSA 403 AM CST MON DEC 22 2008 ...WIND CHILL WARNING WILL EXPIRE AT 4 AM CST EARLY THIS MORNING... THE WIND CHILL WARNING WILL EXPIRE AT 4 AM CST EARLY THIS MORNING. WINDS HAVE DECREASED SUBSTANTIALLY OVERNIGHT AND ARE NOW IN THE 5 TO 10 MPH RANGE. WHILE TEMPERATURES REMAIN BITTERLY COLD WITH READINGS 5 TO 10 BELOW AND STILL SLOWLY FALLING...THE LIGHT WINDS ARE NOT ADDING A SIGNIFICANT WIND CHILL EFFECT. THEREFORE THE WIND CHILL WARNING HAS BEEN ALLOWED TO EXPIRE. HOWEVER...TEMPERATURES WILL REMAIN VERY COLD THIS MORNING. IF YOU MUST VENTURE OUTSIDE...BE SURE YOU HAVE ADEQUATE PROTECTION. $$ IAZ081>086-092>097-221115- /O.EXP.KDMX.WC.Y.0012.000000T0000Z-081222T1000Z/ ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-DECATUR- WAYNE-APPANOOSE-DAVIS- INCLUDING THE CITIES OF...CORNING...CRESTON...OSCEOLA... CHARITON...ALBIA...OTTUMWA...BEDFORD...MOUNT AYR...LEON... CORYDON...CENTERVILLE...BLOOMFIELD 403 AM CST MON DEC 22 2008 ...WIND CHILL ADVISORY WILL EXPIRE AT 4 AM CST EARLY THIS MORNING... THE WIND CHILL ADVISORY WILL EXPIRE AT 4 AM CST EARLY THIS MORNING. WINDS HAVE DECREASED SUBSTANTIALLY OVERNIGHT AND ARE NOW IN THE 5 TO 10 MPH RANGE. WHILE TEMPERATURES REMAIN BITTERLY COLD WITH READINGS BETWEEN ZERO AND 10 BELOW AND STILL SLOWLY FALLING...THE LIGHT WINDS ARE NOT ADDING A SIGNIFICANT WIND CHILL EFFECT. THEREFORE THE WIND CHILL WARNING HAS BEEN ALLOWED TO EXPIRE. HOWEVER...TEMPERATURES WILL REMAIN VERY COLD THIS MORNING. IF YOU MUST VENTURE OUTSIDE...BE SURE YOU HAVE ADEQUATE PROTECTION. $$ LEE
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 Dec 21, 3:22 AM CST, 24 minutes earlier.
Area forecast discussion, Dec 21, 3:22 AM CST, 24 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DES MOINES IA 322 AM CST SUN DEC 21 2008 .SHORT TERM /TONIGHT/... SFC LOW PRESSURE IS MOVING AWAY TO THE EAST WHILE HIGH PRESSURE SPILLS DOWN THE HIGH PLAINS THIS MORNING. PRESSURE GRADIENT WILL REMAIN TIGHT BETWEEN THESE TWO SYSTEMS UNTIL LATE AFTERNOON WHEN THE HIGH WILL BEGIN TO MOVE CLOSER INTO EASTERN SD/NE. MEANWHILE A 500 MB LOW WILL MOVE QUICKLY ACROSS WISCONSIN AND INTO THE GREAT LAKES TODAY. SFC AND LOW-LEVEL WINDS WILL INCREASE MID-MORNING WITH MIXING AND AS THE LOW PRESSURE ALOFT MOVES BY IT WILL PRODUCE CLOUDS AND A SLIGHT CHANCE OF LIGHT SNOW ACROSS OUR FAR NORTHEAST. OF GREATER CONCERN WILL BE THE TREMENDOUS COLD AIR ADVECTION WITH NORTHWEST WINDS BRINGING IN ARCTIC AIR...AND THE STRONG WINDS COMBINING WITH THE FRIGID TEMPERATURES TO PRODUCE DANGEROUS WIND CHILLS AS WELL AS SIGNIFICANT BLOWING AND DRIFTING OF SNOW FROM ABOUT HIGHWAY 30 NORTH. ALONG I-80 AND SOUTH THE SNOW PACK IS EITHER NEGLIGIBLE OR CRUSTED FROM SLEET/ICE RECEIVED A COUPLE NIGHTS AGO. WILL MAINTAIN BLIZZARD WARNING FOR THE NORTH GIVEN LIKELIHOOD OF DRIFTING AND SIGNIFICANTLY REDUCED VSBYS IN BLSN. WIND CHILLS WILL MAKE VENTURING OUTSIDE DANGEROUS ACROSS THE ENTIRE CWA. .LONG TERM /TONIGHT THROUGH SATURDAY/... PRESSURE GRADIENT WL GRADUALLY RELAX TONIGHT AS HIGH PRESSURE MOVES TOWARD THE STATE. EXPECT SOME GUSTY WINDS IN THE EVENING TO DIMINISH INTO THE OVERNIGHT WITH LIGHT WINDS BY MONDAY MORNING. HOWEVER...THE COMBINATION OF DROPPING TEMPS AND WINDS THROUGH THE EARLY MORNING HOURS WILL CONTINUE TO PRODUCE DANGEROUS WIND CHILLS. WL GO WITH A WIND CHILL WARNING IN THE NORTH AND CONTINUE THE ADVISORY IN THE SOUTH THROUGH 10Z. AFTER THIS POINT...WINDS WL BE GENERALLY QUITE LIGHT AND EXPIRATION OF THE HEADLINES SEEMS APPROPRIATE. OVERNIGHT LOWS WILL BE FROM 10 TO 20 BELOW ZERO IN MOST LOCATIONS EXCEPT THE FAR SOUTHEAST. WL SEE WAA TAKE OVER QUICKLY ON MONDAY AS WINDS SWING AROUND AND INCREASE FROM THE SOUTHEAST. THIS IS IN RESPONSE TO UPPER RIDGING SLIDING THROUGH THE REGION AS WESTERN TROF DEEPENS. WL SEE SURGE OF WAA AND THETA-E ADVECTION ALONG WITH STRONG ISENTROPIC LIFT INTO MONDAY NIGHT WITH A RAPID INCREASE IN CLOUDS AND PCPN OVERNIGHT. HAVE UPPED POPS TO LIKELY CATEGORY IN THE NORTHEAST HALF WITH SOME LIGHT ACCUMULATIONS ANTICIPATED. THE PRECIPITATION THREAT WILL PERSIST INTO TUESDAY AS AN INVERTED TROF PASSES THROUGH THE STATE AND WEAK TO MODERATE ISENTROPIC LIFT CONTINUES. GFS AND ECMWF BOTH INDICATE A MODERATELY STRONG SHORTWAVE WL EJECT NORTHEAST INTO THE SOUTHERN REGION ON TUESDAY NIGHT INTO EARLY WEDNESDAY. BOTH BRING A SWATH OF PRECIPITATION INTO THE SOUTHEAST HALF OR SO OF THE FORECAST AREA. HAVE MAINTAINED POPS DURING THIS TIME WITH SOME MINOR SNOWFALL ACCUMULATION...HOWEVER WL HAVE TO MONITOR FOR SOME HEAVIER SNOWFALL ON TUESDAY NIGHT AS DEFORMATION ZONE PASSES THROUGH THE STATE. WL SEE SOME BREAK INTO WEDNESDAY AFTERNOON AND THURSDAY PRIOR TO THE NEXT SYSTEM PULLING INTO THE REGION. MEDIUM RANGE MODELS HAVE VARIOUS SOLUTION ON THIS SYSTEM...ALTHOUGH IT DOES APPEAR THAT WE WL SEE RELATIVELY WARMER TEMPERATURES INTO THE LATTER HALF OF THE WORK WEEK. && .AVIATION...21/06Z MAIN IMPACT OF BLOWING SNOW WILL OCCUR AT KMCW...AND TO A LESSOR EXTENT KALO...WITH STRONGEST WINDS YET TO COME DURING THE DAY SUNDAY. PUSH OF MVFR CIGS WILL ACCOMPANY COLD SURGE LATER TONIGHT INTO SUNDAY MORNING. WINDS WILL DIMINISH DURING THE LATE AFTERNOON/EARLY EVENING. && .DMX WATCHES/WARNINGS/ADVISORIES... WIND CHILL ADVISORY UNTIL 4 AM CST MONDAY FOR ADAIR-ADAMS-APPANOOSE-AUDUBON-CASS-CLARKE-DALLAS-DAVIS-DECATUR- GUTHRIE-JASPER-LUCAS-MADISON-MAHASKA-MARION-MONROE-POLK-POWESHIEK- RINGGOLD-TAYLOR-UNION-WAPELLO-WARREN-WAYNE. WIND CHILL WARNING FROM 6 PM THIS EVENING TO 4 AM CST MONDAY FOR BLACK HAWK-BOONE-BREMER-BUTLER-CALHOUN-CARROLL-CERRO GORDO- CRAWFORD-EMMET-FRANKLIN-GREENE-GRUNDY-HAMILTON-HANCOCK-HARDIN- HUMBOLDT-KOSSUTH-MARSHALL-PALO ALTO-POCAHONTAS-SAC-STORY-TAMA- WEBSTER-WINNEBAGO-WORTH-WRIGHT. BLIZZARD WARNING UNTIL 6 PM CST THIS AFTERNOON FOR BLACK HAWK- BOONE-BREMER-BUTLER-CALHOUN-CARROLL-CERRO GORDO-CRAWFORD-EMMET- FRANKLIN-GREENE-GRUNDY-HAMILTON-HANCOCK-HARDIN-HUMBOLDT-KOSSUTH- MARSHALL-PALO ALTO-POCAHONTAS-SAC-STORY-TAMA-WEBSTER-WINNEBAGO- WORTH-WRIGHT. && SHORT TERM/AVIATION...LEE LONG TERM...COGIL
Hazardous weather outlook, Dec 20, 6:47 PM CST, 8 hours 59 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 647 PM CST SAT DEC 20 2008 IAZ004>007-015>017-023>028-033>039-044>050-211200- EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO- POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN- WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE- BOONE-STORY-MARSHALL-TAMA- 647 PM CST SAT DEC 20 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND NORTHERN IOWA...ALONG AND NORTH OF HIGHWAY 30. .DAY ONE...TONIGHT DANGEROUS CONDITIONS ARE EXPECTED TONIGHT FROM THE COMBINATION OF VERY COLD TEMPERATURES...STRONG NORTHWEST WINDS AND NEAR WHITEOUT CONDITIONS AT TIMES IN OPEN AREAS. A BLIZZARD WARNING IS IN EFFECT THROUGH TONIGHT. PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER DETAILS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY DANGEROUS WEATHER CONDITIONS WILL CONTINUE SUNDAY WITH VERY STRONG NORTHWEST WINDS. BITTERLY COLD WIND CHILLS AND NEAR ZERO VISIBILITY DUE TO BLOWING SNOW WILL PRODUCE BLIZZARD CONDITIONS. TRAVEL WILL BE EXTREMELY DIFFICULT IF NOT IMPOSSIBLE AS DRIFTING WILL OCCUR QUICKLY. A BLIZZARD WARNING IS IN EFFECT FOR THE AREA ON SUNDAY. ALTHOUGH WINDS WILL WILL DIMINISH SOME BY SUNDAY NIGHT...DANGEROUSLY COLD WIND CHILL VALUES ARE EXPECTED TO CONTINUE THROUGH SUNDAY NIGHT. THE NEXT STORM SYSTEM IS EXPECTED TO MOVE THROUGH THE AREA MONDAY NIGHT AND TUESDAY...WITH A LIGHT TO MODERATE SNOWFALL LIKELY. .SPOTTER INFORMATION STATEMENT... REPORTS OF SNOW ACCUMULATIONS AND WINTER WEATHER CONDITIONS ARE ENCOURAGED. IAZ057>062-070>075-081>086-092>097-211200- AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON- WARREN-MARION-MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO- TAYLOR-RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS- 647 PM CST SAT DEC 20 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND SOUTHERN IOWA...SOUTH OF HIGHWAY 30. .DAY ONE...TONIGHT A STRONG NORTHWEST WIND AND VERY COLD ARCTIC AIR WILL PRODUCE WIND CHILL VALUES IN THE 20 TO 30 BELOW RANGE OVERNIGHT. A WIND CHILL ADVISORY HAS BEEN ISSUED FOR THE AREA TONIGHT. PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER DETAILS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY DANGEROUS WIND CHILL VALUES WILL PERSIST INTO SUNDAY AS STRONG NORTHWEST WINDS AND ARCTIC AIR REMAIN OVER THE AREA. THE WIND WILL DIMINISH SOME BY SUNDAY EVENING AS HIGH PRESSURE MOVES INTO THE STATE. HOWEVER...DANGEROUSLY COLD WIND CHILL VALUES WILL CONTINUE SUNDAY NIGHT. A WIND CHILL ADVISORY IS IN EFFECT FOR THE AREA ON SUNDAY. THE NEXT STORM SYSTEM IS EXPECTED TO MOVE THROUGH THE AREA MONDAY NIGHT AND TUESDAY...WITH A LIGHT SNOWFALL LIKELY. .SPOTTER INFORMATION STATEMENT... REPORTS OF SNOW ACCUMULATIONS AND WINTER WEATHER CONDITIONS ARE ENCOURAGED.
Nearby
Wind Chill Warnings in Iowa, 2008Every wind chill warning in 2008
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.