Alert archive / Iowa / Winter Storm Warnings in 2008

Winter Storm Warning 4, NWS Des Moines, IA

December 8, 200815 counties in Iowa

NWS Des Moines, IA issued this winter storm warning at Dec 8, 2008, 4:14 AM CST for 15 counties in Iowa. It took effect at Dec 8, 2008, 12:46 PM CST. It was in force for 23 hr. 35 reports came from inside the area while it was in force.

The area

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

The facts

Issued
Dec 8, 2008, 4:14 AM CST (10:14 UTC)
In effect from
Dec 8, 2008, 12:46 PM CST
Expired
Dec 9, 2008, 12:00 PM CST
In force
23 hr
Issued by
NWS Des Moines, IA

Counties Bremer County, IA, Butler County, IA, Calhoun County, IA, Cerro Gordo County, IA, Emmet County, IA, Franklin County, IA, Hancock County, IA, Humboldt County, IA, Kossuth County, IA, Palo Alto County, IA, Pocahontas County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA

The radar

The Des Moines radar (KDMX), 133 km from the middle of the area, began a volume at 10:19 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Dec 8, 8:00 PM CSTSNOW 0.8Fort Dodge, IASNOW DEPTH OF 1 INCH...WITH VISIBILITY DOWN TO 1 TO 2 MILES.
Dec 8, 8:10 PM CSTSNOW 1.5Clarion, IA1 TO 2 INCHES OF SNOW COVERING GROUND AND ROADS IN CLARION.
Dec 8, 8:20 PM CSTSNOW 1.21 Ese Clarion, IA1 TO 1.5 INCHES OF SNOW
Dec 8, 8:23 PM CSTSNOW 1Hampton, IA1 INCH ACCUMULATION OF SNOW AND SLEET
Dec 8, 8:25 PM CSTSNOW 1Allison, IA
Dec 8, 8:31 PM CSTSNOW 0.51 Wsw Fort Dodge, IASOME SLEET MIXED IN WITH SNOW ACCUMULATION
Dec 8, 8:42 PM CSTSNOW 31 Ssw Mason City, IAAROUND 3 INCHES SINCE 530 PM CST THROUGHOUT MASON CITY
Dec 8, 8:46 PM CSTSNOW 31 E Clear Lake, IA2.5 TO 3.0 INCHES ALONG HIGHWAY 218 BETWEEN MASON CITY AND CLEAR LAKE.
Dec 8, 8:50 PM CSTSNOW 2.51 E Ventura, IA2 TO 3 INCHES BETWEEN VENTURA AND CLEAR LAKE.
Dec 8, 8:58 PM CSTSNOW 3.5Garner, IA
Dec 8, 9:15 PM CSTSNOW 3Fort Dodge, IA2.2 INCHES OF NEW SNOW IN 90 MINUTES.
Dec 8, 10:42 PM CSTSNOW 2.83 E Mason City, IAVISIBILITY A HALF MILE OR LESS
Dec 9, 1:16 AM CSTSNOW 4Fort Dodge, IA
Dec 9, 1:18 AM CSTHEAVY SNOW 5.5Pocahontas, IASTILL SNOWING
Dec 9, 1:23 AM CSTHEAVY SNOW 6Clarion, IA
Dec 9, 1:25 AM CSTSNOW 3.5Estherville, IA
Dec 9, 1:26 AM CSTSNOW 4.5Forest City, IA
Dec 9, 1:58 AM CSTSNOW 4.51 Sse Mason City, IABLOWING SNOW
Dec 9, 4:28 AM CSTSNOW 51 Sse Mason City, IA
Dec 9, 6:24 AM CSTSNOW 4Estherville, IA1 MILE VISIBILITY. WIDESPREAD AREAS OF DRIFTING SNOW.
Dec 9, 6:26 AM CSTSNOW 3Emmetsburg, IA1 MILE VISIBILITY. WIDESPREAD BLOWING AND DRIFTING.
Dec 9, 6:29 AM CSTSNOW 8Algona, IAO VISIBILITY. WIDESPREAD BLOWING AND DRIFTING SNOW.
Dec 9, 6:33 AM CSTSNOW 5Humboldt, IASOME BLOWING AND DRIFTING SNOW.
Dec 9, 6:39 AM CSTSNOW 4Emmetsburg, IA20-30 MPH WIND CAUSING WIDESPREAD BLOWING AND DRIFTING SNOW AND SLICK ROADS.
Dec 9, 6:42 AM CSTSNOW 6Lake Mills, IABLOWING SNOW REDUCING VISIBILITES TO AROUND A MILE.
Dec 9, 6:45 AM CSTSNOW 4Garner, IA15-20 MPH WIND
Dec 9, 6:47 AM CSTSNOW 5.5Mason City, IA
Dec 9, 6:48 AM CSTSNOW 4Clarion, IA15-20 MPH WIND WITH SOME BLOWING AND DRIFTING
Dec 9, 6:48 AM CSTSNOW 4Garner, IA15-20 MPH WIND
Dec 9, 6:52 AM CSTSNOW 5Fort Dodge, IA
Dec 9, 6:53 AM CSTSNOW 5Rockwell City, IA15 MPH WIND CAUSING SOME BLOWING AND DRIFTING SNOW.
Dec 9, 7:04 AM CSTSNOW 5Hampton, IA
Dec 9, 7:15 AM CSTSNOW 5Lake Mills, IA
Dec 9, 7:17 AM CSTSNOW 5Allison, IA
Dec 9, 9:38 AM CSTSNOW 7Ringsted, IA

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

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 10.2 hours before the alert went out and 215 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2008-12-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2008-12-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 245 square meters per square second.1939587897117136156Sfc1 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
789 m above ground
0-6 km bulk shear
94 kt
0-1 km storm-relative helicity
245 m²/s²
0-3 km storm-relative helicity
252 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.

000 
WWUS43 KDMX 081014
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
414 AM CST MON DEC 8 2008

...WINTER STORM CONDITIONS LATE TODAY THROUGH TUESDAY TUESDAY...

.LOW PRESSURE WILL DEVELOP OVER THE SOUTH CENTRAL PLAINS AND MOVE
ACROSS CENTRAL MISSOURI AND THROUGH THE OHIO VALLEY TONIGHT
AND TUESDAY. THE SYSTEM IS EXPECTED TO PRODUCE A MODERATE TO HEAVY
AMOUNT OF PRECIPITATION ACROSS CENTRAL IOWA. THE SNOW WILL BEGIN
LATE THIS AFTERNOON ACROSS NORTHERN IOWA AND CONTINUE INTO TUESDAY
MORNING. FARTHER SOUTH THE PRECIPITATION WILL BEGIN AS RAIN BEFORE THE
TRANSITION TO SNOW...WITH A BRIEF PERIOD OF FREEZING RAIN POSSIBLE
DURING THE TRANSITION. INCREASING NORTH TO NORTHWEST WINDS WILL CAUSE
BLOWING AND DRIFTING SNOW AND CONTRIBUTE TO REDUCED VISIBILITY AND
GREATLY HAMPER TRAVEL CONDITIONS LATER TONIGHT AND TUESDAY. EXPECT
THE BLOWING SNOW TO CONTINUE FOR SEVERAL HOURS EVEN AFTER THE SNOW
ENDS TUESDAY AFTERNOON.

IAZ017-025>028-081815-
/O.UPG.KDMX.WS.A.0006.081209T0000Z-081210T0000Z/
/O.NEW.KDMX.WS.W.0004.081208T2100Z-081210T0000Z/
CERRO GORDO-WRIGHT-FRANKLIN-BUTLER-BREMER-
INCLUDING THE CITIES OF...MASON CITY...CLARION...HAMPTON...
ALLISON...WAVERLY
414 AM CST MON DEC 8 2008

...WINTER STORM WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO
6 PM CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM 3 PM THIS AFTERNOON TO 6 PM CST TUESDAY. THE WINTER STORM
WATCH IS NO LONGER IN EFFECT.

SNOW WILL BEGIN LATE THIS AFTERNOON AND CONTINUE THROUGH TUESDAY
MORNING. SNOWFALL COULD BE MODERATE TO HEAVY AT TIMES TONIGHT.
TOTAL SNOW ACCUMULATION OF 4 TO 7 INCHES IS EXPECTED. NORTH TO
NORTHWEST WINDS WILL INCREASE TO 20 TO 30 MPH WITH GUSTS OVER 35
MPH LATER TONIGHT THROUGH THE DAY TUESDAY. THIS WILL CAUSE VERY
LOW VISIBILITY AT TIMES AND SIGNIFICANT BLOWING AND DRIFTING
SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND
WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IAZ004>007-015-016-024-081815-
/O.NEW.KDMX.WS.W.0004.081208T2100Z-081210T0000Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-HUMBOLDT-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...HUMBOLDT
414 AM CST MON DEC 8 2008

...WINTER STORM WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO
6 PM CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM 3 PM THIS AFTERNOON TO 6 PM CST TUESDAY.

SNOW WILL BEGIN LATE THIS AFTERNOON AND CONTINUE THROUGH TUESDAY
MORNING. SNOWFALL COULD BE MODERATE TO HEAVY AT TIMES TONIGHT.
TOTAL SNOW ACCUMULATION OF 4 TO 7 INCHES IS EXPECTED. NORTH TO
NORTHWEST WINDS WILL INCREASE TO 20 TO 30 MPH WITH GUSTS OVER 35
MPH LATER TONIGHT THROUGH THE DAY TUESDAY. THIS WILL CAUSE VERY
LOW VISIBILITY AT TIMES AND SIGNIFICANT BLOWING AND DRIFTING
SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND
WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IAZ023-033-081815-
/O.EXA.KDMX.WS.A.0006.081209T0000Z-081210T0000Z/
POCAHONTAS-SAC-
INCLUDING THE CITIES OF...POCAHONTAS...SAC CITY
414 AM CST MON DEC 8 2008

...WINTER STORM WATCH IN EFFECT FROM THIS EVENING THROUGH TUESDAY
AFTERNOON...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM THIS EVENING THROUGH
TUESDAY AFTERNOON. 

MODERATE SNOW IS LIKELY TONIGHT AND TUESDAY...ALONG WITH
NORTH WINDS INCREASING TO 20 TO 30 MPH WITH HIGHER GUSTS. TOTAL
SNOWFALL ACCUMULATIONS OF 3 TO 5 INCHES ARE POSSIBLE ALONG WITH
CONSIDERABLE BLOWING AND DRIFTING SNOW. THE BLOWING AND DRIFTING
SNOW...RESULTING IN LOW VISIBILITY AND DIFFICULT TRAVEL...WILL
LIKELY CONTINUE INTO TUESDAY EVENING.

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

$$

IAZ034>039-044>050-057>062-070>075-081>083-092-093-081815-
/O.CON.KDMX.WS.A.0006.081209T0000Z-081210T0000Z/
CALHOUN-WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-
CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-DALLAS-
POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-MAHASKA-
ADAMS-UNION-CLARKE-TAYLOR-RINGGOLD-
INCLUDING THE CITIES OF...ROCKWELL CITY...FORT DODGE...
WEBSTER CITY...ELDORA...GRUNDY CENTER...WATERLOO...DENISON...
CARROLL...JEFFERSON...BOONE...AMES...MARSHALLTOWN...TOLEDO...
AUDUBON...GUTHRIE CENTER...ADEL...DES MOINES...NEWTON...
GRINNELL...ATLANTIC...GREENFIELD...WINTERSET...INDIANOLA...
KNOXVILLE...OSKALOOSA...CORNING...CRESTON...OSCEOLA...BEDFORD...
MOUNT AYR
414 AM CST MON DEC 8 2008

...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH
TUESDAY AFTERNOON...

A WINTER STORM WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH
TUESDAY AFTERNOON. 

MODERATE TO HEAVY SNOW IS LIKELY LATE TONIGHT AND TUESDAY...ALONG
WITH NORTH WINDS INCREASING TO 20 TO 30 MPH WITH HIGHER GUSTS.
TOTAL SNOWFALL ACCUMULATIONS OF 3 TO 6 INCHES ARE POSSIBLE ALONG
WITH CONSIDERABLE BLOWING AND DRIFTING SNOW. THE BLOWING AND
DRIFTING SNOW...RESULTING IN LOW VISIBILITY AND DIFFICULT
TRAVEL...WILL LIKELY CONTINUE INTO TUESDAY EVENING. THE AXIS OF
HEAVIEST SNOWFALL IS LIKELY TO BE FROM GUTHRIE CENTER AND
JEFFERSON THROUGH AMES...MARSHALLTOWN AND WATERLOO.

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

$$

MOYER
9 follow-up statements
000 
WWUS43 KDMX 081648
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
1048 AM CST MON DEC 8 2008

...WINTER STORM CONDITIONS LATE TODAY THROUGH TUESDAY...

.LOW PRESSURE DEVELOPING OVER THE SOUTH CENTRAL PLAINS TODAY WILL
LIFT NORTHEAST THROUGH CENTRAL MISSOURI AND THE OHIO VALLEY
TONIGHT AND TUESDAY. THE SYSTEM IS EXPECTED TO PRODUCE A MODERATE
TO HEAVY AMOUNT OF PRECIPITATION ACROSS CENTRAL IOWA. THE SNOW
WILL BEGIN LATE THIS AFTERNOON ACROSS NORTHERN IOWA AND CONTINUE
INTO TUESDAY MORNING. FARTHER SOUTH THE PRECIPITATION WILL BEGIN
AS RAIN BEFORE THE TRANSITION TO SNOW...WITH A BRIEF PERIOD OF
FREEZING RAIN POSSIBLE DURING THE TRANSITION. INCREASING NORTH TO
NORTHWEST WINDS WILL CAUSE BLOWING AND DRIFTING SNOW AND
CONTRIBUTE TO REDUCED VISIBILITY AND GREATLY HAMPER TRAVEL
CONDITIONS LATER TONIGHT AND TUESDAY. EXPECT THE BLOWING SNOW TO
CONTINUE FOR SEVERAL HOURS EVEN AFTER THE SNOW ENDS.

IAZ004>007-015>017-024>028-090100-
/O.CON.KDMX.WS.W.0004.081208T2100Z-081210T0000Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...HUMBOLDT...
CLARION...HAMPTON...ALLISON...WAVERLY
1048 AM CST MON DEC 8 2008

...WINTER STORM WARNING REMAINS IN EFFECT FROM 3 PM THIS
AFTERNOON TO 6 PM CST TUESDAY...

A PERIOD OF FREEZING RAIN IS POSSIBLE THIS AFTERNOON BEFORE THE
PRECIPITATION TRANSITIONS TO SNOW. THE SNOW WILL CONTINUE THROUGH
THE OVERNIGHT BEFORE DIMINISHING TUESDAY MORNING. SNOWFALL COULD
BE MODERATE TO HEAVY AT TIMES TONIGHT THEN QUICKLY DIMINISHING
AFTER 6 AM TUESDAY. TOTAL SNOW ACCUMULATION OF 4 TO 7 INCHES IS
EXPECTED. NORTH TO NORTHWEST WINDS WILL INCREASE TO 20 TO 30 MPH
WITH GUSTS OVER 35 MPH LATER TONIGHT THROUGH THE DAY TUESDAY. THIS
WILL CAUSE VERY LOW VISIBILITY AT TIMES AND SIGNIFICANT BLOWING
AND DRIFTING SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IAZ023-033>039-044>050-057>062-070>075-081>083-092-093-090100-
/O.CON.KDMX.WS.A.0006.081209T0000Z-081210T0000Z/
POCAHONTAS-SAC-CALHOUN-WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-TAYLOR-RINGGOLD-
INCLUDING THE CITIES OF...POCAHONTAS...SAC CITY...ROCKWELL CITY...
FORT DODGE...WEBSTER CITY...ELDORA...GRUNDY CENTER...WATERLOO...
DENISON...CARROLL...JEFFERSON...BOONE...AMES...MARSHALLTOWN...
TOLEDO...AUDUBON...GUTHRIE CENTER...ADEL...DES MOINES...NEWTON...
GRINNELL...ATLANTIC...GREENFIELD...WINTERSET...INDIANOLA...
KNOXVILLE...OSKALOOSA...CORNING...CRESTON...OSCEOLA...BEDFORD...
MOUNT AYR
1048 AM CST MON DEC 8 2008

...WINTER STORM WATCH REMAINS IN EFFECT FROM 6 PM CST THIS
EVENING THROUGH TUESDAY AFTERNOON...

A WINTER STORM WATCH REMAINS IN EFFECT FROM 6 PM CST THIS EVENING
THROUGH TUESDAY AFTERNOON. 

A MIX OF RAIN...FREEZING RAIN AND SLEET IS POSSIBLE OVER MUCH OF
CENTRAL IOWA TONIGHT BEFORE TRANSITIONING TO ALL SNOW LATE. SOME
ICE ACCUMULATIONS ARE POSSIBLE. MODERATE TO HEAVY SNOW IS LIKELY
LATE TONIGHT AND TUESDAY...ALONG WITH NORTH WINDS INCREASING TO 20
TO 30 MPH WITH HIGHER GUSTS. TOTAL SNOWFALL ACCUMULATIONS OF 3 TO
6 INCHES ARE POSSIBLE ALONG WITH CONSIDERABLE BLOWING AND DRIFTING
SNOW. THE BLOWING AND DRIFTING SNOW...RESULTING IN LOW VISIBILITY
AND DIFFICULT TRAVEL...WILL LIKELY CONTINUE INTO TUESDAY EVENING.

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

$$

DONAVON
000 
WWUS43 KDMX 081849
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
1249 PM CST MON DEC 8 2008

...WINTER STORM CONDITIONS LATE TODAY THROUGH TUESDAY...

.LOW PRESSURE DEVELOPING OVER THE SOUTH CENTRAL PLAINS TODAY WILL
LIFT NORTHEAST THROUGH CENTRAL MISSOURI AND THE OHIO VALLEY
TONIGHT AND TUESDAY. THE SYSTEM IS EXPECTED TO PRODUCE A MODERATE
TO HEAVY AMOUNT OF PRECIPITATION ACROSS CENTRAL IOWA. THE SNOW
WILL BEGIN LATE THIS AFTERNOON ACROSS NORTHERN IOWA AND CONTINUE
INTO TUESDAY MORNING. FARTHER SOUTH THE PRECIPITATION WILL BEGIN
AS RAIN BEFORE THE TRANSITION TO SNOW...WITH A BRIEF PERIOD OF
FREEZING RAIN POSSIBLE DURING THE TRANSITION. INCREASING NORTH TO
NORTHWEST WINDS WILL CAUSE BLOWING AND DRIFTING SNOW AND
CONTRIBUTE TO REDUCED VISIBILITY AND GREATLY HAMPER TRAVEL
CONDITIONS LATER TONIGHT AND TUESDAY. EXPECT THE BLOWING SNOW TO
CONTINUE FOR SEVERAL HOURS EVEN AFTER THE SNOW ENDS.

IAZ004>007-015>017-024>028-090300-
/O.EXT.KDMX.WS.W.0004.081208T1846Z-081210T0000Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...HUMBOLDT...
CLARION...HAMPTON...ALLISON...WAVERLY
1249 PM CST MON DEC 8 2008

...WINTER STORM WARNING NOW IN EFFECT UNTIL 6 PM CST TUESDAY...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 6 PM CST TUESDAY.

FREEZING RAIN WILL CONTINUE TO DEVELOP OVER NORTH CENTRAL IOWA
THIS AFTERNOON AND WILL PRODUCE SOME ICE ACCUMULATION. THIS
PRECIPITATION WILL QUICKLY CREATE ICY CONDITIONS ON LOCAL ROADWAYS
AND WALKWAYS. THE PRECIPITATION WILL TRANSITION OVER TO SNOW LATE
THIS AFTERNOON AND CONTINUE THROUGH THE OVERNIGHT THEN DIMINISHING
TUESDAY MORNING. SNOWFALL COULD BE MODERATE TO HEAVY AT TIMES
TONIGHT THEN QUICKLY DIMINISHING AFTER 6 AM TUESDAY. TOTAL SNOW
ACCUMULATION OF 4 TO 7 INCHES IS EXPECTED. NORTH TO NORTHWEST
WINDS WILL INCREASE TO 20 TO 30 MPH WITH GUSTS OVER 35 MPH LATER
TONIGHT THROUGH THE DAY TUESDAY. THIS WILL CAUSE VERY LOW
VISIBILITY AT TIMES AND SIGNIFICANT BLOWING AND DRIFTING SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IAZ023-033>039-044>050-057>062-070>075-081>083-092-093-090300-
/O.CON.KDMX.WS.A.0006.081209T0000Z-081210T0000Z/
POCAHONTAS-SAC-CALHOUN-WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-TAYLOR-RINGGOLD-
INCLUDING THE CITIES OF...POCAHONTAS...SAC CITY...ROCKWELL CITY...
FORT DODGE...WEBSTER CITY...ELDORA...GRUNDY CENTER...WATERLOO...
DENISON...CARROLL...JEFFERSON...BOONE...AMES...MARSHALLTOWN...
TOLEDO...AUDUBON...GUTHRIE CENTER...ADEL...DES MOINES...NEWTON...
GRINNELL...ATLANTIC...GREENFIELD...WINTERSET...INDIANOLA...
KNOXVILLE...OSKALOOSA...CORNING...CRESTON...OSCEOLA...BEDFORD...
MOUNT AYR
1249 PM CST MON DEC 8 2008

...WINTER STORM WATCH REMAINS IN EFFECT FROM 6 PM CST THIS
EVENING THROUGH TUESDAY AFTERNOON...

A WINTER STORM WATCH REMAINS IN EFFECT FROM 6 PM CST THIS EVENING
THROUGH TUESDAY AFTERNOON. 

A MIX OF RAIN...FREEZING RAIN AND SLEET IS POSSIBLE OVER MUCH OF
CENTRAL IOWA TONIGHT BEFORE TRANSITIONING TO ALL SNOW LATE. SOME
ICE ACCUMULATIONS ARE POSSIBLE. MODERATE TO HEAVY SNOW IS LIKELY
LATE TONIGHT AND TUESDAY...ALONG WITH NORTH WINDS INCREASING TO
20 TO 30 MPH WITH HIGHER GUSTS. TOTAL SNOWFALL ACCUMULATIONS OF
3 TO 6 INCHES ARE POSSIBLE ALONG WITH CONSIDERABLE BLOWING AND
DRIFTING SNOW. THE BLOWING AND DRIFTING SNOW...RESULTING IN LOW
VISIBILITY AND DIFFICULT TRAVEL...WILL LIKELY CONTINUE INTO
TUESDAY EVENING.

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

$$

DONAVON
000 
WWUS43 KDMX 082218
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
418 PM CST MON DEC 8 2008

...WINTER WEATHER TO AFFECT IOWA THROUGH TUESDAY...

.A COUPLE OF SYSTEMS WILL CONVERGE ON IOWA THROUGH TUESDAY AND
PRODUCE A WIDE VARIETY OF WINTER WEATHER. FREEZING RAIN CURRENTLY
ONGOING OVER NORTH CENTRAL IOWA WILL GRADUALLY TRANSITION TO SNOW.
A BAND OF MODERATE SNOW IS EXPECTED ACROSS THIS AREA THIS EVENING.
THE PRECIPITATION WILL MOVE INTO CENTRAL IOWA OVERNIGHT WITH RAIN
TRANSITIONING TO FREEZING RAIN AND THEN SNOW. BY TUESDAY
MORNING...LOW PRESSURE MOVING THROUGH MISSOURI AND ILLINOIS WILL
SHIFT THE FOCUS FOR PRECIPITATION TO SOUTHEAST IOWA. IN ADDITION TO
THE PRECIPITATION...INCREASING NORTHERLY WINDS WILL BRING BLOWING
AND DRIFTING SNOW WHICH WILL LAST SEVERAL HOURS AFTER THE SNOW
DIMINISHES. 

IAZ004>007-015>017-024>028-090630-
/O.EXT.KDMX.WS.W.0004.000000T0000Z-081209T1800Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...HUMBOLDT...
CLARION...HAMPTON...ALLISON...WAVERLY
418 PM CST MON DEC 8 2008

...WINTER STORM WARNING NOW IN EFFECT UNTIL 12 PM CST TUESDAY...

FREEZING RAIN WILL TRANSITION TO SNOW BY THIS EVENING BUT NOT
BEFORE SOME ICE ACCUMULATIONS UP TO ONE TENTH OF AN INCH OCCUR.
SNOWFALL COULD BE MODERATE TO HEAVY AT TIMES THIS EVENING WITH
LIGHT AMOUNTS POSSIBLE AFTER MIDNIGHT BEFORE DIMINISHING SHORTLY
AFTER 6 AM TUESDAY. TOTAL SNOW ACCUMULATIONS OF 3 TO 6 INCHES IS
EXPECTED WITH LOCALLY HIGHER AMOUNTS POSSIBLE. NORTH TO NORTHWEST
WINDS WILL INCREASE TO 20 TO 30 MPH WITH GUSTS OVER 35 MPH LATER
TONIGHT THROUGH THE DAY TUESDAY. THIS WILL CAUSE VERY LOW
VISIBILITY AT TIMES AND SIGNIFICANT BLOWING AND DRIFTING SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IAZ023-033>039-090630-
/O.UPG.KDMX.WS.A.0006.081209T0000Z-081210T0000Z/
/O.NEW.KDMX.WW.Y.0014.081208T2218Z-081209T2100Z/
POCAHONTAS-SAC-CALHOUN-WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
INCLUDING THE CITIES OF...POCAHONTAS...SAC CITY...ROCKWELL CITY...
FORT DODGE...WEBSTER CITY...ELDORA...GRUNDY CENTER...WATERLOO
418 PM CST MON DEC 8 2008

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 3 PM CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
WEATHER ADVISORY FOR A MIX OF WINTER WEATHER...WHICH IS IN EFFECT UNTIL
3 PM CST TUESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

A MIX OF RAIN...FREEZING RAIN AND SLEET IS POSSIBLE THROUGH EARLY
EVENING BEFORE TRANSITIONING TO ALL SNOW OVERNIGHT. SOME ICE ACCUMULATIONS
UP TO ONE TENTH OF AN INCH ARE POSSIBLE. MODERATE SNOW IS LIKELY
LATE TONIGHT AND TUESDAY...ALONG WITH NORTH WINDS INCREASING TO 20
TO 30 MPH WITH HIGHER GUSTS. TOTAL SNOWFALL ACCUMULATIONS OF 2 TO
4 INCHES ARE POSSIBLE ALONG WITH CONSIDERABLE BLOWING AND DRIFTING
SNOW. THE BLOWING AND DRIFTING SNOW...RESULTING IN LOW VISIBILITY
AND DIFFICULT TRAVEL.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

IAZ044>050-057-058-090630-
/O.UPG.KDMX.WS.A.0006.081209T0000Z-081210T0000Z/
/O.NEW.KDMX.WW.Y.0014.081209T0000Z-081209T2100Z/
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
INCLUDING THE CITIES OF...DENISON...CARROLL...JEFFERSON...BOONE...
AMES...MARSHALLTOWN...TOLEDO...AUDUBON...GUTHRIE CENTER
418 PM CST MON DEC 8 2008

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 3 PM CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
WEATHER ADVISORY FOR A MIX OF WINTER WEATHER...WHICH IS IN EFFECT UNTIL
3 PM CST TUESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

A MIX OF RAIN...FREEZING RAIN AND SLEET IS POSSIBLE OVER MUCH OF
CENTRAL IOWA THIS EVENING BEFORE TRANSITIONING TO ALL SNOW AFTER MIDNIGHT.
SOME ICE ACCUMULATIONS UP TO ONE TENTH OF AN INCH ARE EXPECTED.
SNOW MAY BE MODERATE AT TIMES LATE TONIGHT AND TUESDAY
MORNING...ALONG WITH NORTH WINDS INCREASING TO 20 TO 30 MPH WITH
HIGHER GUSTS. TOTAL SNOWFALL ACCUMULATIONS OF 1 TO 3 INCHES ARE
POSSIBLE ALONG WITH CONSIDERABLE BLOWING AND DRIFTING SNOW. THE
BLOWING AND DRIFTING SNOW...RESULTING IN LOW VISIBILITY AND
DIFFICULT TRAVEL.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

IAZ059>062-070>075-081>083-092-093-090630-
/O.UPG.KDMX.WS.A.0006.081209T0000Z-081210T0000Z/
/O.NEW.KDMX.WW.Y.0014.081209T0600Z-081209T2100Z/
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-TAYLOR-RINGGOLD-
INCLUDING THE CITIES OF...ADEL...DES MOINES...NEWTON...GRINNELL...
ATLANTIC...GREENFIELD...WINTERSET...INDIANOLA...KNOXVILLE...
OSKALOOSA...CORNING...CRESTON...OSCEOLA...BEDFORD...MOUNT AYR
418 PM CST MON DEC 8 2008

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
3 PM CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
WEATHER ADVISORY FOR A MIX OF WINTER WEATHER...WHICH IS IN EFFECT FROM
MIDNIGHT TONIGHT TO 3 PM CST TUESDAY. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.

A MIX OF RAIN...FREEZING RAIN AND SLEET IS POSSIBLE AFTER MIDNIGHT
BEFORE TRANSITIONING TO ALL SNOW TUESDAY MORNING. SOME ICE ACCUMULATIONS
ARE POSSIBLE. THE SNOW MAY BE MODERATE AT TIMES TUESDAY MORNING
ALONG WITH NORTH WINDS INCREASING TO 20 TO 30 MPH WITH HIGHER
GUSTS. TOTAL SNOWFALL ACCUMULATIONS OF 1 TO 3 INCHES ARE POSSIBLE
ALONG WITH CONSIDERABLE BLOWING AND DRIFTING SNOW. THE BLOWING AND
DRIFTING SNOW...RESULTING IN LOW VISIBILITY AND DIFFICULT
TRAVEL.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

IAZ084-094-090630-
/O.NEW.KDMX.WW.Y.0014.081209T0600Z-081209T2100Z/
LUCAS-DECATUR-
INCLUDING THE CITIES OF...CHARITON...LEON
418 PM CST MON DEC 8 2008

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
3 PM CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
WEATHER ADVISORY FOR A MIX OF WINTER WEATHER...WHICH IS IN EFFECT FROM
MIDNIGHT TONIGHT TO 3 PM CST TUESDAY.

EXPECT A MIX OF PRECIPITATION TO DEVELOP AFTER MIDNIGHT. RAIN WILL
CHANGE TO FREEZING RAIN AND SLEET BEFORE TRANSITIONING TO SNOW BY
TUESDAY MORNING. SOME ICE ACCUMULATIONS ARE POSSIBLE ALONG WITH 1
TO 3 INCHES OF SNOW. INCREASING NORTH WINDS OF 20 TO 30 MPH ON
TUESDAY WILL CAUSE BLOWING AND DRIFTING OF SNOW. 


A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

IAZ085-086-095>097-090630-
/O.NEW.KDMX.WW.Y.0014.081209T1000Z-081210T0000Z/
MONROE-WAPELLO-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...ALBIA...OTTUMWA...CORYDON...
CENTERVILLE...BLOOMFIELD
418 PM CST MON DEC 8 2008

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 6 PM CST
TUESDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
WEATHER ADVISORY FOR A MIX OF WINTER WEATHER...WHICH IS IN EFFECT FROM 4
AM TO 6 PM CST TUESDAY.

EXPECT A MIX OF PRECIPITATION TO DEVELOP AFTER LATE TONIGHT. RAIN WILL
CHANGE TO FREEZING RAIN AND SLEET BEFORE TRANSITIONING TO SNOW BY
TUESDAY MORNING. SOME ICE ACCUMULATIONS ARE POSSIBLE ALONG WITH 1
TO 3 INCHES OF SNOW. INCREASING NORTH WINDS OF 20 TO 30 MPH ON
TUESDAY WILL CAUSE BLOWING AND DRIFTING OF SNOW. 

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

DONAVON
000 
WWUS43 KDMX 090312
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
912 PM CST MON DEC 8 2008

...WINTER WEATHER TO AFFECT IOWA THROUGH TUESDAY...

.A COUPLE OF SYSTEMS WILL CONVERGE ON IOWA THROUGH TUESDAY AND
PRODUCE A WIDE VARIETY OF WINTER WEATHER. FREEZING RAIN CURRENTLY
ONGOING OVER NORTH CENTRAL IOWA WILL GRADUALLY TRANSITION TO
SNOW. A BAND OF MODERATE SNOW IS EXPECTED ACROSS THIS AREA THIS
EVENING. THE PRECIPITATION WILL MOVE INTO CENTRAL IOWA OVERNIGHT
WITH RAIN TRANSITIONING TO FREEZING RAIN AND THEN SNOW. BY
TUESDAY MORNING...LOW PRESSURE MOVING THROUGH MISSOURI AND
ILLINOIS WILL SHIFT THE FOCUS FOR PRECIPITATION TO SOUTHEAST
IOWA. IN ADDITION TO THE PRECIPITATION...INCREASING NORTHERLY
WINDS WILL BRING BLOWING AND DRIFTING SNOW WHICH WILL LAST
SEVERAL HOURS AFTER THE SNOW DIMINISHES.

IAZ004>007-015>017-024>028-091115-
/O.CON.KDMX.WS.W.0004.000000T0000Z-081209T1800Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...HUMBOLDT...
CLARION...HAMPTON...ALLISON...WAVERLY
912 PM CST MON DEC 8 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 12 PM CST
TUESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 12 PM CST TUESDAY.

SNOWFALL SHOULD BE MODERATE TO HEAVY AT TIMES THIS EVENING WITH
LIGHT AMOUNTS POSSIBLE AFTER MIDNIGHT BEFORE DIMINISHING SHORTLY
AFTER 6 AM TUESDAY. TOTAL SNOW ACCUMULATIONS OF 4 TO 7 INCHES IS
EXPECTED. NORTH TO NORTHWEST WINDS WILL INCREASE TO 20 TO 30 MPH
WITH GUSTS OVER 35 MPH LATER TONIGHT THROUGH THE DAY TUESDAY. THIS
WILL CAUSE VERY LOW VISIBILITY AT TIMES AND SIGNIFICANT BLOWING
AND DRIFTING SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IAZ023-033>039-044>050-057-058-091115-
/O.CON.KDMX.WW.Y.0014.000000T0000Z-081209T2100Z/
POCAHONTAS-SAC-CALHOUN-WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
INCLUDING THE CITIES OF...POCAHONTAS...SAC CITY...ROCKWELL CITY...
FORT DODGE...WEBSTER CITY...ELDORA...GRUNDY CENTER...WATERLOO...
DENISON...CARROLL...JEFFERSON...BOONE...AMES...MARSHALLTOWN...
TOLEDO...AUDUBON...GUTHRIE CENTER
912 PM CST MON DEC 8 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST
TUESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST
TUESDAY. 

A MIX OF RAIN...FREEZING RAIN AND SLEET IS POSSIBLE OVER MUCH OF
CENTRAL IOWA THIS EVENING BEFORE TRANSITIONING TO ALL SNOW AFTER
MIDNIGHT. AN ICE ACCUMULATION UP TO TWO TENTHS OF AN INCH IS POSSIBLE.
SNOW MAY BE MODERATE AT TIMES LATE TONIGHT AND TUESDAY MORNING...ALONG
WITH NORTH WINDS INCREASING TO 20 TO 30 MPH WITH HIGHER GUSTS.
TOTAL SNOWFALL ACCUMULATIONS OF 1 TO 4 INCHES ARE POSSIBLE ALONG
WITH CONSIDERABLE BLOWING AND DRIFTING SNOW. THE HIGHER SNOWFALL
TOTALS ARE EXPECTED ALONG NEAR THE HIGHWAY 20 CORRIDOR. THE
BLOWING AND DRIFTING SNOW...RESULTING IN LOW VISIBILITY AND
DIFFICULT TRAVEL.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

IAZ059>062-070>075-081>084-092>094-091115-
/O.CON.KDMX.WW.Y.0014.081209T0600Z-081209T2100Z/
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-LUCAS-TAYLOR-RINGGOLD-DECATUR-
INCLUDING THE CITIES OF...ADEL...DES MOINES...NEWTON...GRINNELL...
ATLANTIC...GREENFIELD...WINTERSET...INDIANOLA...KNOXVILLE...
OSKALOOSA...CORNING...CRESTON...OSCEOLA...CHARITON...BEDFORD...
MOUNT AYR...LEON
912 PM CST MON DEC 8 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST
TUESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST
TUESDAY. 

A MIX OF RAIN...FREEZING RAIN AND SLEET IS POSSIBLE AFTER
MIDNIGHT BEFORE TRANSITIONING TO ALL SNOW TUESDAY MORNING. AN ICE
ACCUMULATION OF UP TO ONE TO TWO TENTHS OF AN INCH IS POSSIBLE.
THE SNOW MAY BE MODERATE AT TIMES TUESDAY MORNING ALONG WITH NORTH
WINDS INCREASING TO 20 TO 30 MPH WITH HIGHER GUSTS. TOTAL SNOWFALL
ACCUMULATIONS OF 1 TO 2 INCHES ARE POSSIBLE ALONG WITH
CONSIDERABLE BLOWING AND DRIFTING SNOW. THE BLOWING AND DRIFTING
SNOW...RESULTING IN LOW VISIBILITY AND DIFFICULT TRAVEL.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

IAZ085-086-095>097-091115-
/O.CON.KDMX.WW.Y.0014.081209T1000Z-081210T0000Z/
MONROE-WAPELLO-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...ALBIA...OTTUMWA...CORYDON...
CENTERVILLE...BLOOMFIELD
912 PM CST MON DEC 8 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 6 PM
CST TUESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 6 PM CST
TUESDAY. 

EXPECT A MIX OF PRECIPITATION TO DEVELOP AFTER LATE TONIGHT. RAIN
WILL CHANGE TO FREEZING RAIN AND SLEET BEFORE TRANSITIONING TO
SNOW BY TUESDAY MORNING. AN ICE ACCUMULATION UP TO ONE TENTH OF AN
INCH IS POSSIBLE ALONG WITH 1 TO 3 INCHES OF SNOW. INCREASING NORTH
WINDS OF 20 TO 30 MPH ON TUESDAY WILL CAUSE BLOWING AND DRIFTING
OF SNOW.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

REV
000 
WWUS43 KDMX 090752
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
152 AM CST TUE DEC 9 2008

...WINTER WEATHER TO AFFECT IOWA THROUGH TODAY...

.LOW PRESSURE WILL TRACK FROM NEAR KANSAS CITY EARLY THIS MORNING
TO THE LOWER GREAT LAKES BY TONIGHT. FREEZING RAIN CURRENTLY
ONGOING OVER CENTRAL IOWA WILL GRADUALLY TRANSITION TO SNOW. A
BAND OF MODERATE TO LOCALLY HEAVY SNOW WILL CONTINUE ACROSS
NORTH CENTRAL IOWA. IN ADDITION TO THE PRECIPITATION...INCREASING
NORTHERLY WINDS WILL BRING BLOWING AND DRIFTING SNOW WHICH WILL
LAST SEVERAL HOURS AFTER THE SNOW DIMINISHES.

IAZ023-034-035-091600-
/O.UPG.KDMX.WW.Y.0014.000000T0000Z-081209T2100Z/
/O.EXA.KDMX.WS.W.0004.000000T0000Z-081209T1800Z/
POCAHONTAS-CALHOUN-WEBSTER-
INCLUDING THE CITIES OF...POCAHONTAS...ROCKWELL CITY...FORT DODGE
152 AM CST TUE DEC 9 2008

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

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
UNTIL NOON CST TODAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN
EFFECT. 

SNOW WILL CONTINUE...MODERATE TO HEAVY AT TIMES...EARLY THIS
MORNING WITH HOURLY RATES OF ONE HALF TO ONE INCH. TOTAL SNOWFALL
ACCUMULATIONS OF 5 TO 8 INCHES ARE LIKELY. NORTH WINDS
INCREASING TO 20 TO 30 MPH WITH HIGHER GUSTS WILL CAUSE
CONSIDERABLE BLOWING AND DRIFTING OF THE SNOW...LOW VISIBILITY
AND DIFFICULT TRAVEL. THE SNOW WILL TAPER OFF DURING THE MORNING
DAYLIGHT HOURS...BUT BLOWING SNOW WILL CONTINUE THROUGH THE DAY.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA
FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN
EMERGENCY.

$$

IAZ004>007-015>017-024>028-091600-
/O.CON.KDMX.WS.W.0004.000000T0000Z-081209T1800Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...HUMBOLDT...
CLARION...HAMPTON...ALLISON...WAVERLY
152 AM CST TUE DEC 9 2008

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

A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW REMAINS IN
EFFECT UNTIL NOON CST TODAY.

SNOWFALL SHOULD BE MODERATE TO LOCALLY HEAVY AT TIMES EARLY THIS
MORNING BEFORE DIMINISHING BY MID MORNING. TOTAL SNOW
ACCUMULATIONS OF 4 TO 8 INCHES IS EXPECTED. NORTH TO NORTHWEST
WINDS WILL INCREASE TO 20 TO 30 MPH WITH GUSTS OVER 35 MPH. THIS
WILL CAUSE VERY LOW VISIBILITY AT TIMES AND SIGNIFICANT BLOWING
AND DRIFTING SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IAZ033-036>039-044>050-057>062-070>075-081>084-092>094-091600-
/O.CON.KDMX.WW.Y.0014.000000T0000Z-081209T2100Z/
SAC-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE-
BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-
POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-MAHASKA-ADAMS-UNION-
CLARKE-LUCAS-TAYLOR-RINGGOLD-DECATUR-
INCLUDING THE CITIES OF...SAC CITY...WEBSTER CITY...ELDORA...
GRUNDY CENTER...WATERLOO...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...BEDFORD...MOUNT AYR...LEON
152 AM CST TUE DEC 9 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

A WINTER WEATHER ADVISORY FOR FREEZING RAIN...SLEET AND SNOW REMAINS
IN EFFECT UNTIL 3 PM CST THIS AFTERNOON.

NORTHWEST OF AN ATLANTIC TO TAMA LINE...LIGHT TO MODERATE SNOW
WILL CONTINUE EARLY THIS MORNING...WITH TOTAL ACCUMULATIONS OF 2
TO 5 INCHES BY MID MORNING TUESDAY. IF NOT ALREADY...FREEZING
RAIN AND A LITTLE SLEET WILL BECOME THE DOMINANT PRECIPITATION
TYPE ELSEWHERE EARLY THIS MORNING...BUT GRADUALLY CHANGE TO SNOW
BY SUNRISE. AN ICE ACCUMULATION UP TO TWO TENTHS OF AN INCH IS
POSSIBLE.TOTAL SNOWFALL IN THESE AREAS WILL BE 1 TO 3 INCHES BY
MID MORNING. NORTH WINDS INCREASING TO 20 TO 30 MPH WITH HIGHER
GUSTS WILL CREATE CONSIDERABLE BLOWING AND DRIFTING
SNOW...ESPECIALLY NORTH OF HIGHWAY 20. THE WIND WILL ALSO LIKELY
ADD STRESS TO POWER LINES AND TREES BRANCHES THAT ARE COATED IN
ICE. THE BLOWING AND DRIFTING SNOW...RESULTING IN LOW VISIBILITY
AND DIFFICULT TRAVEL.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

IAZ085-086-095>097-091600-
/O.CON.KDMX.WW.Y.0014.081209T1000Z-081210T0000Z/
MONROE-WAPELLO-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...ALBIA...OTTUMWA...CORYDON...
CENTERVILLE...BLOOMFIELD
152 AM CST TUE DEC 9 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON. 

EXPECT A MIX OF PRECIPITATION TO DEVELOP AFTER LATE TONIGHT. RAIN
WILL CHANGE TO FREEZING RAIN AND SLEET BEFORE TRANSITIONING TO
SNOW THIS MORNING. AN ICE ACCUMULATION UP TO ONE TENTH OF
AN INCH IS POSSIBLE ALONG WITH 1 TO 3 INCHES OF SNOW. INCREASING
NORTH WINDS OF 20 TO 30 MPH ON TUESDAY WILL CAUSE BLOWING AND
DRIFTING OF SNOW.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

MOYER
000 
WWUS43 KDMX 091010
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
410 AM CST TUE DEC 9 2008

...WINTER WEATHER TO AFFECT IOWA THROUGH TODAY...

.LOW PRESSURE WILL TRACK FROM NORTH CENTRAL MISSOURI TO THE LOWER
GREAT LAKES BY TONIGHT. MOISTURE NORTH OF THIS LOW PRESSURE WILL
DIMINISH ACROSS CENTRAL IOWA THIS MORNING...BUT REMAIN OVER
SOUTHEAST SECTIONS THROUGH MUCH OF THE DAY. WHERE NOT ALREADY
SNOWING...PRECIPITATION WILL CHANGE TO SNOW BY 9 AM. AREAS
SOUTHEAST OF DES MOINES WILL HAVE A FEW MORE HOURS OF FREEZING
RAIN AND SLEET WITH ICE ACCUMULATIONS LESS THAN ONE QUARTER INCH.
TOTAL SNOW ACCUMULATIONS WILL RANGE FROM 5 TO 9 INCHES ACROSS
NORTHERN IOWA TO 1 TO 4 INCHES ELSEWHERE. INCREASING NORTHERLY
WINDS WILL CAUSE MUCH BLOWING AND DRIFTING SNOW...ESPECIALLY NORTH
OF HIGHWAY 30...WHICH WILL LAST SEVERAL HOURS AFTER THE SNOW
DIMINISHES.

IAZ004>007-015>017-023>028-034-035-091800-
/O.CON.KDMX.WS.W.0004.000000T0000Z-081209T1800Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-CALHOUN-WEBSTER-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...
ROCKWELL CITY...FORT DODGE
410 AM CST TUE DEC 9 2008

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

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

A BAND OF LIGHT TO MODERATE SNOW WILL SLOWLY DIMINISH BY MID
MORNING AS IT TRANSLATES EAST. ADDITIONAL SNOWFALL OF 1 TO 2
INCHES IS POSSIBLE DURING THIS TIME...WITH TOTAL SNOW ACCUMULATIONS
OF 4 TO 9 INCHES. NORTH TO NORTHWEST WINDS 20 TO 30 MPH WITH GUSTS
OVER 35 MPH WILL CONTINUE THROUGH THE DAY. THIS WILL CAUSE VERY
LOW VISIBILITY AT TIMES AND SIGNIFICANT BLOWING AND DRIFTING SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IAZ033-036>039-044>050-057>062-070>075-081>084-092>094-091815-
/O.CON.KDMX.WW.Y.0014.000000T0000Z-081209T2100Z/
SAC-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE-
BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-
POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-MAHASKA-ADAMS-UNION-
CLARKE-LUCAS-TAYLOR-RINGGOLD-DECATUR-
INCLUDING THE CITIES OF...SAC CITY...WEBSTER CITY...ELDORA...
GRUNDY CENTER...WATERLOO...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...BEDFORD...MOUNT AYR...LEON
410 AM CST TUE DEC 9 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON. 

AREAS NORTHWEST OF A CRESTON TO INDIANOLA...NEWTON AND TAMA LINE WILL
HAVE LIGHT TO MODERATE SNOWFALL THROUGH 9 AM...WITH AN ADDITIONAL
1 TO 2 INCHES OF SNOW ACCUMULATION POSSIBLE. SOUTHEAST OF THIS
LINE...FREEZING RAIN AND A LITTLE SLEET WILL GRADUALLY CHANGE TO
SNOW. ICE ACCRUAL OF UP TO TWO TENTHS ON ALL SURFACES...INCLUDING
ROADS...WILL CREATE VERY DANGEROUS DRIVING AND WALKING
CONDITIONS...ESPECIALLY WHEN HIDDEN BY A THIN LAYER OF SNOW.
TOTAL SNOWFALL IN THE ADVISORY AREA WILL RANGE FROM 1 TO 2 INCHES
SOUTH OF INTERSTATE 80 TO 2 TO 5 INCHES NORTH OF HIGHWAY 30. NORTH
WINDS INCREASING TO 20 TO 30 MPH WITH HIGHER GUSTS WILL CREATE
CONSIDERABLE BLOWING AND DRIFTING SNOW THROUGH MUCH OF THE
DAY...ESPECIALLY NORTH OF HIGHWAY 30...AND RESULT IN LOW
VISIBILITY AND DIFFICULT TRAVEL. THE WIND WILL ALSO LIKELY ADD
STRESS TO POWER LINES AND TREES BRANCHES THAT ARE COATED IN ICE.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

IAZ085-086-095>097-091815-
/O.CON.KDMX.WW.Y.0014.000000T0000Z-081210T0000Z/
MONROE-WAPELLO-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...ALBIA...OTTUMWA...CORYDON...
CENTERVILLE...BLOOMFIELD
410 AM CST TUE DEC 9 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON. 

EXPECT A MIX OF PRECIPITATION TO DEVELOP EARLY THIS MORNING. RAIN
WILL CHANGE TO FREEZING RAIN AND SLEET BEFORE TRANSITIONING TO
SNOW BY 9 AM. AN ICE ACCUMULATION UP TO ONE TENTH OF AN INCH
IS POSSIBLE FOLLOWED BY 1 TO 3 INCHES OF SNOW. INCREASING NORTH
WINDS OF 20 TO 30 MPH WILL CAUSE BLOWING AND DRIFTING OF SNOW
LATER TODAY.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

MOYER
000 
WWUS43 KDMX 091310
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
710 AM CST TUE DEC 9 2008

...SNOW ENDING...BLOWING SNOW TO CONTINUE...

.LOW PRESSURE OVER NORTHEAST MISSOURI WILL TRACK INTO THE LOWER
GREAT LAKES BY TONIGHT. MOISTURE NORTHWEST OF THIS LOW PRESSURE WILL
DIMINISH ACROSS CENTRAL IOWA THIS MORNING...BUT REMAIN OVER
SOUTHEAST SECTIONS THROUGH MUCH OF THE DAY. AREAS SOUTHEAST OF
CHARITON AND OSKALOOSA WILL TRANSITION TO SNOW BY 9 AM. TOTAL SNOW
ACCUMULATIONS WILL RANGE FROM 5 TO 9 INCHES ACROSS NORTHERN IOWA
TO 1 TO 4 INCHES ELSEWHERE. STRONG NORTHERLY WINDS WILL CAUSE
MUCH BLOWING AND DRIFTING SNOW...ESPECIALLY NORTH OF HIGHWAY
30...WHICH WILL LAST SEVERAL HOURS AFTER THE SNOW DIMINISHES.

IAZ033-036-044>047-057>059-070>072-081-082-092-093-091415-
/O.CAN.KDMX.WW.Y.0014.000000T0000Z-081209T2100Z/
SAC-HAMILTON-CRAWFORD-CARROLL-GREENE-BOONE-AUDUBON-GUTHRIE-DALLAS-
CASS-ADAIR-MADISON-ADAMS-UNION-TAYLOR-RINGGOLD-
INCLUDING THE CITIES OF...SAC CITY...WEBSTER CITY...DENISON...
CARROLL...JEFFERSON...BOONE...AUDUBON...GUTHRIE CENTER...ADEL...
ATLANTIC...GREENFIELD...WINTERSET...CORNING...CRESTON...BEDFORD...
MOUNT AYR
710 AM CST TUE DEC 9 2008

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS CANCELLED THE
WINTER WEATHER ADVISORY. 

ONLY SCATTERED FLURRIES ARE EXPECTED THE REST OF THE DAY...WITH NO
ADDITIONAL ACCUMULATION. NORTH WINDS 20 TO 30 MPH AND GUSTY WILL
PRODUCE AREAS OF BLOWING AND DRIFTING SNOW WHERE MORE THAN AN INCH
FELL...MAINLY NORTH OF HIGHWAY 30.

$$

IAZ004>007-015>017-023>028-034-035-091800-
/O.CON.KDMX.WS.W.0004.000000T0000Z-081209T1800Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-CALHOUN-WEBSTER-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...
ROCKWELL CITY...FORT DODGE
710 AM CST TUE DEC 9 2008

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

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

LIGHT SNOW WILL CONTINUE TO RAPIDLY DIMINISH THIS
MORNING...LEAVING ONLY FLURRIES FOR THE BALANCE OF THE DAY.
HOWEVER...NORTH TO NORTHWEST WINDS 20 TO 30 MPH WITH GUSTS OVER 35
MPH WILL CONTINUE THROUGH THE DAY. THIS WILL CAUSE VERY LOW
VISIBILITY AT TIMES AND SIGNIFICANT BLOWING AND DRIFTING SNOW.
ZERO VISIBILITY WAS REPORTED BY KOSSUTH COUNTY LAW ENFORCEMENT
SHORTLY BEFORE 7 AM.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IAZ037>039-048>050-060>062-073>075-083-084-094-092100-
/O.CON.KDMX.WW.Y.0014.000000T0000Z-081209T2100Z/
HARDIN-GRUNDY-BLACK HAWK-STORY-MARSHALL-TAMA-POLK-JASPER-
POWESHIEK-WARREN-MARION-MAHASKA-CLARKE-LUCAS-DECATUR-
INCLUDING THE CITIES OF...ELDORA...GRUNDY CENTER...WATERLOO...
AMES...MARSHALLTOWN...TOLEDO...DES MOINES...NEWTON...GRINNELL...
INDIANOLA...KNOXVILLE...OSKALOOSA...OSCEOLA...CHARITON...LEON
710 AM CST TUE DEC 9 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON. 

LIGHT TO LOCALLY MODERATE SNOW WILL CONTINUE THIS MORNING...BUT
TAPER OFF WEST TO EAST. ADDITIONAL SNOW ACCUMULATION WILL BE LESS
THAN 2 INCHES...FOR STORM TOTALS OF 1 TO 3 INCHES. NORTH WINDS
INCREASING TO 20 TO 30 MPH WITH HIGHER GUSTS WILL CREATE
CONSIDERABLE BLOWING AND DRIFTING SNOW THROUGH MUCH OF THE
DAY...ESPECIALLY NORTH OF HIGHWAY 30...AND RESULT IN LOW
VISIBILITY AND DIFFICULT TRAVEL. THE WIND WILL ALSO LIKELY ADD
STRESS TO POWER LINES AND TREES BRANCHES THAT ARE COATED IN ICE.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

IAZ085-086-095>097-092115-
/O.CON.KDMX.WW.Y.0014.000000T0000Z-081210T0000Z/
MONROE-WAPELLO-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...ALBIA...OTTUMWA...CORYDON...
CENTERVILLE...BLOOMFIELD
710 AM CST TUE DEC 9 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON. 

RAIN WILL CHANGE TO FREEZING RAIN AND SLEET BEFORE TRANSITIONING
TO SNOW BY 9 AM. AN ICE ACCUMULATION UP TO ONE TENTH OF AN INCH IS
POSSIBLE FOLLOWED BY 1 TO 2 INCHES OF SNOW. INCREASING NORTH WINDS
OF 20 TO 30 MPH WILL CAUSE BLOWING AND DRIFTING OF SNOW LATER
TODAY.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

MOYER
000 
WWUS43 KDMX 091655
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
1055 AM CST TUE DEC 9 2008

...LINGERING BLOWING AND DRIFTING SNOW INTO THE AFTERNOON ACROSS
SOUTHEAST IOWA...

IAZ004>007-015>017-023>028-034-035-091800-
/O.CON.KDMX.WS.W.0004.000000T0000Z-081209T1800Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-CALHOUN-WEBSTER-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...
ROCKWELL CITY...FORT DODGE
1055 AM CST TUE DEC 9 2008

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

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

ONLY SCATTERED FLURRIES ARE EXPECTED ACROSS NORTHERN IOWA THROUGH MIDDAY. 
HOWEVER...NORTH TO NORTHWEST WINDS WITH GUSTS NEAR 40 MPH WILL
CONTINUE. LAW ENFORCEMENT OFFICIALS ACROSS NORTHERN IOWA REPORT NO
PROBLEMS DUE TO LOW VISIBILITY IN BLOWING SNOW...AND THE WARNING
WILL BE ALLOWED TO EXPIRE AT NOON. HOWEVER...MOTORISTS SHOULD BE
PREPARED FOR DRIFTING SNOW ACROSS ROADWAYS...ESPECIALLY ACROSS AREAS THAT
RECEIVED HIGHER SNOWFALL AMOUNTS OF 5 TO 8 INCHES.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING.  SIGNIFICANT AMOUNTS OF
SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN
AN EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

$$

IAZ037>039-048>050-060>062-073>075-083-084-094-092100-
/O.CON.KDMX.WW.Y.0014.000000T0000Z-081209T2100Z/
HARDIN-GRUNDY-BLACK HAWK-STORY-MARSHALL-TAMA-POLK-JASPER-
POWESHIEK-WARREN-MARION-MAHASKA-CLARKE-LUCAS-DECATUR-
INCLUDING THE CITIES OF...ELDORA...GRUNDY CENTER...WATERLOO...
AMES...MARSHALLTOWN...TOLEDO...DES MOINES...NEWTON...GRINNELL...
INDIANOLA...KNOXVILLE...OSKALOOSA...OSCEOLA...CHARITON...LEON
1055 AM CST TUE DEC 9 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON. 

SCATTERED LIGHT SNOW SHOWERS AND FLURRIES WILL CONTINUE THROUGH
MID AFTERNOON. NORTH WINDS WITH GUSTS NEAR 40 MPH AND PRODUCE
DRIFTING SNOW ACROSS ROADWAYS...ESPECIALLY NORTH OF HIGHWAY 30.
HOWEVER...BLOWING SNOW IS NOT EXPECTED TO IMPACT VISIBILITIES AND
THE ADVISORY WILL LIKELY BE ALLOWED TO EXPIRE AT 3 PM. THE WIND WILL
ALSO LIKELY ADD STRESS TO POWER LINES AND TREES BRANCHES THAT ARE
COATED IN ICE.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

IAZ085-086-095>097-100000-
/O.CON.KDMX.WW.Y.0014.000000T0000Z-081210T0000Z/
MONROE-WAPELLO-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...ALBIA...OTTUMWA...CORYDON...
CENTERVILLE...BLOOMFIELD
1055 AM CST TUE DEC 9 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON. 

SNOW SHOWERS WILL SPREAD INTO SOUTHEAST IOWA DURING THE AFTERNOON
HOURS. ADDITIONAL ACCUMULATIONS OF AN INCH OR TWO ARE POSSIBLE
THROUGH 6 PM. A NORTH WIND WILL GUST NEAR 40 MPH AND CAUSE BLOWING
AND DRIFTING OF SNOW...AND DIFFICULT TRAVEL CONDITIONS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

KINNEY
000 
WWUS43 KDMX 091806
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
1206 PM CST TUE DEC 9 2008

...LINGERING BLOWING AND DRIFTING SNOW INTO THE AFTERNOON ACROSS
SOUTHEAST IOWA...

IAZ004>007-015>017-023>028-034-035-091915-
/O.EXP.KDMX.WS.W.0004.000000T0000Z-081209T1800Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-CALHOUN-WEBSTER-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...
ROCKWELL CITY...FORT DODGE
1206 PM CST TUE DEC 9 2008

...WINTER STORM WARNING HAS EXPIRED...

THE WINTER STORM WARNING IS NO LONGER IN EFFECT. 

SOME BLOWING SNOW WILL CONTINUE THROUGH THE AFTERNOON ACROSS
NORTHERN IOWA...WITH VISIBILITIES DOWN TO A MILE OR TWO AT TIMES.
THIS WILL NOT HAMPER TRAVEL. HOWEVER...A GUSTY NORTH WIND WILL
PRODUCE SOME DRIFTING SNOW IN OPEN AREAS...AND ROADS REMAIN SNOW
AND ICE COVERED. SECONDARY ROADS ARE ESPECIALLY SLICK.

$$

IAZ037>039-048>050-060>062-073>075-083-084-094-092100-
/O.CON.KDMX.WW.Y.0014.000000T0000Z-081209T2100Z/
HARDIN-GRUNDY-BLACK HAWK-STORY-MARSHALL-TAMA-POLK-JASPER-
POWESHIEK-WARREN-MARION-MAHASKA-CLARKE-LUCAS-DECATUR-
INCLUDING THE CITIES OF...ELDORA...GRUNDY CENTER...WATERLOO...
AMES...MARSHALLTOWN...TOLEDO...DES MOINES...NEWTON...GRINNELL...
INDIANOLA...KNOXVILLE...OSKALOOSA...OSCEOLA...CHARITON...LEON
1206 PM CST TUE DEC 9 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON. 

SCATTERED LIGHT SNOW SHOWERS AND FLURRIES WILL CONTINUE THROUGH
MID AFTERNOON. NORTH WINDS WITH GUSTS NEAR 40 MPH AND PRODUCE
DRIFTING SNOW ACROSS ROADWAYS...ESPECIALLY NORTH OF HIGHWAY 30.
HOWEVER...BLOWING SNOW IS NOT EXPECTED TO IMPACT VISIBILITIES AND
THE ADVISORY WILL LIKELY BE ALLOWED TO EXPIRE AT 3 PM. THE WIND
WILL ALSO LIKELY ADD STRESS TO POWER LINES AND TREES BRANCHES
THAT ARE COATED IN ICE.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

IAZ085-086-095>097-100000-
/O.CON.KDMX.WW.Y.0014.000000T0000Z-081210T0000Z/
MONROE-WAPELLO-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...ALBIA...OTTUMWA...CORYDON...
CENTERVILLE...BLOOMFIELD
1206 PM CST TUE DEC 9 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON. 

SNOW SHOWERS WILL SPREAD INTO SOUTHEAST IOWA THIS AFTERNOON. ADDITIONAL
ACCUMULATIONS OF AN INCH OR TWO ARE POSSIBLE THROUGH 6 PM. A NORTH
WIND WILL GUST NEAR 40 MPH AND CAUSE BLOWING AND DRIFTING OF
SNOW...AND DIFFICULT TRAVEL CONDITIONS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

$$

KINNEY

What forecasters said that day

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

NWS Des Moines, IA wrote its last area forecast discussion before this winter storm warning went out at Dec 8, 3:41 AM CST, 33 minutes earlier.

Area forecast discussion, Dec 8, 3:41 AM CST, 33 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
341 AM CST MON DEC 8 2008

.SHORT TERM /TODAY/...
WARM FRONT ASSOCIATED WITH AREA OF LOW PRESSURE  ALONG THE FRONT
RANGE SITUATED JUST TO THE SOUTH OF THE CWA...WITH EASTERLY TO
SOUTHEASTERLY FLOW ACROSS THE CWA. HIGH CLOUDS HAVE BEEN STREAMING
NORTHWARD WITH WAA ALOFT...AND THUS SFC TEMPS HAVE BEEN NEARLY
STEADY OR SLOWLY RISING THROUGH THE NIGHT. BIGGEST ISSUES TODAY
CENTER AROUND HOW FAR WARM FRONT PUSHES NORTH...AND ON MOISTURE
RETURN AND HOW FAST THE COLUMN WILL SATURATE. MODEL SOUNDINGS AND
TIME-HEIGHT SECTIONS INDICATE LARGE AREA OF DRY AIR IN THE MID
LEVELS TO OVERCOME WITH SATURATION OCCURRING WITH COOLING ALOFT
TOWARD LATE AFTERNOON INTO EARLY THIS EVENING FROM NORTH TO SOUTH.
WITH LOW LEVEL MOISTURE INCREASING THROUGHOUT THE DAY...THEREFORE
MAY END UP WITH MORE OF A DZ/FZDZ SCENARIO ACROSS THE CWA BY LATE
MORNING INTO THE AFTERNOON DEPENDING ON SFC TEMP. COND PRES DEFICITS
APPROACH 0 MB BY LATE AFTERNOON ACROSS THE NORTHERN TWO TO THREE
TIERS OF COUNTIES...SO EXPECT A QUICK TRANSITION OVER TO ALL SNOW.
GREATEST ISENTROPIC LIFT LOCATED THROUGHOUT NORTHERN IOWA AS WELL AT
THIS TIME...SO HAVE INCREASED POPS TO CATEGORICAL THROUGH THE LATE
AFTERNOON HOURS. SNOW RATIOS INITIALLY TO BE NEAR A 10:1 RATIO...AND
WITH MODELS PROJECTING NEARLY A TENTH OR SLIGHTLY MORE QPF...EXPECT
NEARLY AN INCH TO INCH AND A HALF OF SNOW NEAR KEST TO KMCW THROUGH
00Z. SFC TEMPS TRICKY THROUGHOUT THE DAY WITH COLD AIR ENTRENCHED AT
THE SURFACE...AND TRYING TO NAIL DOWN PROGRESSION OF THE WARM FRONT.
CURRENTLY EXPECT FRONT TO PUSH TO AROUND THE HWY 20 TO HWY 30
CORRIDOR WHICH SHOULD KEEP ANY BRIEF PERIODS OF FZDZ MAINLY NORTH OF
HWY 20...WITH DZ OR LIGHT RAIN SOUTHWARD.

.LONG TERM /TONIGHT-SUNDAY/...
THE MAIN EVENT TONIGHT AND TUESDAY IS COMING INTO BETTER FOCUS AND
MODELS ARE BEGINNING TO SHOW BETTER AGREEMENT. THE ECMWF CONTINUES
TO BE THE MOST CONSISTENT...WHICH IS WHAT THE PREVIOUS FORECASTS
WERE HEAVILY WEIGHTED TOWARD. THIS CONTINUES TO BE THE
CASE...THOUGH THERE IS BETTER SUPPORT FROM THE OTHER MODELS. AS
LOW PRESSURE DEVELOPS OVER THE SOUTH CENTRAL PLAINS...AN INVERTED
TROUGH/FRONT WILL BE WELL INTO CENTRAL IOWA KEEPING AREAS
SOUTHEAST OF THIS ZONE ABOVE FREEZING WELL INTO THE NIGHT. AS THE
LOW MOVES ACROSS NORTHERN MISSOURI OVERNIGHT...COLDER AIR WRAPS IN
AND DYNAMICAL COOLING TAKES PLACE...TEMPERATURES WILL FALL AND
PRECIP THAT WAS RAIN WILL TRANSITION TO SNOW. THERE MAY BE A SMALL
WINDOW AT ANY GIVEN LOCATION INITIALLY RAIN TO EXPERIENCE FREEZING
RAIN ON THE WAY TO SNOW. IT ALL DEPENDS ON WHETHER THE ENTIRE
COLUMN JUMPS BELOW FREEZING OR THE SURFACE GOES FIRST. ITS TOO
HARD TO TELL AT THIS POINT. HOWEVER...NO SOUNDING SUPPORTS MUCH
SLEET. IT WILL PROBABLY BE A QUICK TRANSITION TO SNOW.

THERE ARE TWO AREAS OF CONCERN. THE FIRST IS ACROSS THE NORTH
WHERE SNOW WILL BE ONGOING UNDER 600-500 MB FRONTOGENETICAL ZONE TO
START THE NIGHT. THIS FORCING ZONE HAS SUPPORT FROM ALL MODELS AND
ENSEMBLES...AND IS PERHAPS THE AREA THAT WILL RECEIVE THE MOST
SNOW. WILL GO AHEAD AND UPGRADE WATCH AND/OR ISSUE A WINTER STORM
WARNING FOR THE NORTHERN 3 TIERS OF COUNTIES BEGINNING AT 21Z
TODAY. COULD HAVE 5 TO 8 INCHES OF SNOW UP THERE...AND WITH WIND PICKING
UP LATER TONIGHT AND CONTINUING THROUGH TUESDAY THERE WILL BE MUCH
BLOWING AND DRIFTING. THE SECOND AREA OF CONCERN IS THE REMAINDER OF
THE WATCH. THE PLACEMENT OF THE WATCH IS STILL GOOD. HOWEVER...THE
AMOUNT OF SNOWFALL IS STILL IN QUESTION. THE ECMWF HAS NOW BACKED
OFF ON TOTAL QPF OVER ITS LAST 2 RUNS...BUT THE GFS IS NOW SHOWING
MORE TOTAL QPF. THE ECMWF WANTS TO WEAKEN THE DEF
ZONE/TROWAL/FRONTOGENETICAL FORCING ZONE INITIALLY OVER NRN IOWA
AS IT PIVOTS AND WRAPS IN BEHIND THE LOW PRESSURE PASSING TO OUR
SOUTH. THE GFS...RATHER...MAINTAINS OR RE-INVIGORATES THE FORCING
RIGHT OVER CENTRAL IOWA LATE TONIGHT AND POINTS SOUTHEAST DURING
THE DAY TUESDAY. SO WHILE THE ECMWF SUPPORTS LIGHTER QPF...THE GFS
STILL IS A REASON FOR PAUSE...AND OUR QPF IS A BLEND OF THE HPC
GUIDANCE...ECMWF AND GFS. THE GFS DOES SHOW A PERFECT CROSS HAIRS
DENDRITIC GROWTH ZONE SIGNATURE OVER CENTRAL IOWA EARLY TUESDAY
WHICH COULD YIELD 2 TO 4 HOURS OF 1 INCH SNOWFALL RATES. STILL
LOOKING FOR ANYWHERE FROM 3 TO 6 INCHES IN THE WATCH AREA WITH
ONLY A LIGHT GLAZE OF FREEZING RAIN POSSIBLE. WHILE OUR TOTAL
SNOWFALL FORECAST IS A LITTLE LOWER NOW IN THE WATCH AREA...WILL
MAINTAIN THE WATCH BECAUSE OF THE EXPECTED WIND FACTOR LATE
TONIGHT AND TUESDAY WHICH WILL CAUSE SIGNIFICANT BLOWING AND
DRIFTING SNOW...AND REDUCED VISIBILITY. SINCE THE IMPACT OF SNOW
IN THE REST OF THE WATCH AREA IS NOT EXPECTED UNTIL AFTER MIDNIGHT
TONIGHT...THE DAY SHIFT CAN REASSESS AND MAKE A FINAL
DETERMINATION AND STILL HAVE PLENTY OF LEAD TIME ON A
WARNING/ADVISORY. IT IS ALMOST CERTAIN THAT ALL OF OUR ZONES WILL
REQUIRE SOME SORT OF ADVISORY OR WARNING IN PLACE FOR TUESDAY. THE
WIND WILL BE A MAJOR FACTOR AND WILL RESULT IN BORDERLINE BLIZZARD
CONDITIONS IN MANY LOCATIONS AS GUSTS COULD REACH CLOSE TO 40 MPH.

SAC AND POCAHONTAS COUNTIES ARE BEING ADDED TO THE WATCH IN ORDER
TO BLEND IN WITH HEADLINES FROM SURROUNDING OFFICES. THEY ALONG
WITH OTHER COUNTIES IN THE WATCH MAY VERY WELL BE CONVERTED TO AN
ADVISORY RATHER THAN A WARNING LATER TODAY...BUT I DID NOT WANT TO
ISSUE A TWO COUNTY SECOND PERIOD ADVISORY AT THIS TIME.

BEST FORCING FOR PRECIP EXITS TO THE BY MIDDAY TUESDAY...BUT SOME
SNOW MAY LINGER IN THE FAR EAST THROUGH THE AFTERNOON. THE WIND
WILL DIMINISH TUESDAY NIGHT. WEDNESDAY WILL BE COLD WITH HIGHS
WELL BELOW NORMAL. THE NEXT COUPLE OF SYSTEMS CLIPPER SYSTEMS ARE
NOW EXPECTED TO TRACK FARTHER NORTH WHICH PUTS US INTO THE WARM
SECTOR OR EACH AND REDUCES THE CHANCES FOR LIGHT SNOW. A FEW
TWEAKS WERE MADE TO DAYS 3 THROUGH 5. NEXT WEEK IS STILL LOOKING
ACTIVE AND INTERESTING.

&&

.AVIATION...08/09Z
DUE TO AMOUNT OF DRY AIR IN THE LOW LEVELS HAVE REMOVED MENTION OF
LOW CLOUD COVER AND CHANCES FOR FZRA THROUGH ABOUT 15Z. VFR
CONDITIONS SHOULD PREVAIL UNTIL SOME LOWER LEVEL MOISTURE SURGES
NORTHWARD TOWARD MID MORNING INTO THE AFTERNOON HOURS. CHANCES FOR
FZDZ STILL REMAIN AT MAINLY KALO AND KMCW BY LATE MORNING INTO THE
AFTERNOON HOURS WHERE PRECIP SHOULD CHANGE OVER TO SNOW
QUICKLY...ESPECIALLY AT KMCW TOWARD 21Z. OTHERWISE CHANGEOVER TO ALL
SNOW EXPECTED FROM NORTH TO SOUTH DURING THE LATE AFTERNOON AND
EVENING HOURS AT KALO AND KFOD. CIGS TO LOWER TO IFR/LIFR...WITH
VSBYS IN THE IFR/MVFR RANGE TOWARD 00-06Z MONDAY EVENING. CHANGEOVER
TO SNOW EXPECTED AT KOTM...AND KDSM AFTER THE CURRENT TAF PERIOD.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WATCH FROM THIS EVENING THROUGH TUESDAY AFTERNOON
FOR ADAIR-ADAMS-AUDUBON-BLACK HAWK-BOONE-CALHOUN-CARROLL-CASS-
CLARKE-CRAWFORD-DALLAS-GREENE-GRUNDY-GUTHRIE-HAMILTON-HARDIN-
JASPER-MADISON-MAHASKA-MARION-MARSHALL-POCAHONTAS-POLK-POWESHIEK-
RINGGOLD-SAC-STORY-TAMA-TAYLOR-UNION-WARREN-WEBSTER.

WINTER STORM WARNING FROM 3 PM THIS EVENING TO 6 PM CST TUESDAY
FOR BREMER-BUTLER-CERRO GORDO-EMMET-FRANKLIN-HANCOCK-HUMBOLDT-
KOSSUTH-PALO ALTO-WINNEBAGO-WORTH-WRIGHT.

&&

SHORT TERM...ALBRECHT
LONG TERM...MOYER
AVIATION...ALBRECHT
Hazardous weather outlook, Dec 7, 3:55 PM CST, 12 hours 19 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
355 PM CST SUN DEC 7 2008

IAZ004>007-015-016-023-024-033-082200-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-POCAHONTAS-
HUMBOLDT-SAC-
355 PM CST SUN DEC 7 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
IOWA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A PERIOD OF LIGHT FREEZING RAIN IS POSSIBLE ON MONDAY.

LIGHT TO POTENTIALLY MODERATE SNOWFALL OF 2 TO 5 INCHES IS LIKELY
MONDAY NIGHT AND TUESDAY. INCREASING NORTH WINDS GUSTING IN EXCESS
OF 30 MPH WILL CAUSE BLOWING AND DRIFTING OF THE SNOW INTO TUESDAY
NIGHT AS WELL...SIGNIFICANTLY REDUCING VISIBILITY AND HAMPERING
TRAVEL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

IAZ017-025>028-034>039-044>050-057>062-070>075-081>083-092-093-
082200-
CERRO GORDO-WRIGHT-FRANKLIN-BUTLER-BREMER-CALHOUN-WEBSTER-
HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-CARROLL-GREENE-BOONE-
STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-
CASS-ADAIR-MADISON-WARREN-MARION-MAHASKA-ADAMS-UNION-CLARKE-
TAYLOR-RINGGOLD-
355 PM CST SUN DEC 7 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

LIGHT FREEZING RAIN IS POSSIBLE LATE TONIGHT MAINLY EAST OF
INTERSTATE 35 AND SOUTH OF HIGHWAY 30.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THE CHANCE FOR LIGHT FREEZING RAIN WILL CONTINUE EAST OF
INTERSTATE 35 ON MONDAY MORNING.

A WINTER STORM WATCH IS IN EFFECT FOR THE AREA MONDAY NIGHT AND
TUESDAY FOR THE POTENTIAL FOR MODERATE TO HEAVY SNOWFALL ALONG WITH
INCREASING NORTHEAST TO NORTH WINDS PRODUCING CONSIDERABLE BLOWING
AND DRIFTING SNOW. PLEASE REFER TO THE NATIONAL WEATHER SERVICE
WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER DETAILS.

BLOWING AND DRIFTING SNOW WILL LIKELY CONTINUE TUESDAY NIGHT...SIGNIFICANTLY
REDUCING VISIBILITY AND HAMPERING TRAVEL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

IAZ084>086-094>097-082200-
LUCAS-MONROE-WAPELLO-DECATUR-WAYNE-APPANOOSE-DAVIS-
355 PM CST SUN DEC 7 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
IOWA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

RAIN WILL CHANGE TO SNOW LATE MONDAY NIGHT...WITH LIGHT TO MODERATE
ACCUMULATIONS OF SNOW IN THE RANGE OF 2 TO 5 INCHES EXPECTED
THROUGH TUESDAY. AN INCREASING NORTH WIND LATE MONDAY NIGHT AND
TUESDAY WILL CAUSE CONSIDERABLE BLOWING AND DRIFTING OF
SNOW...WHICH WILL CONTINUE INTO TUESDAY NIGHT. THERE IS THE
POTENTIAL FOR SIGNIFICANTLY REDUCED VISIBILITY AND POOR TRAVEL
CONDITIONS DUE TO BLOWING AND DRIFTING SNOW DURING THIS PERIOD.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

DONAVON

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 8, 4:18 PM CSTWinter Weather AdvisoryDMXAdair, Adams, Appanoose, Audubon, Black Hawk, Boone and 33 more26 hr

Nearby

Winter Storm Warnings in Iowa, 2008Every winter storm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.