Alert archive / Iowa / Winter Storm Warnings in 2014

Winter Storm Warning 2, NWS Des Moines, IA

February 19, 20148 counties in Iowa

NWS Des Moines, IA issued this winter storm warning at Feb 19, 2014, 3:43 PM CST for 8 counties in Iowa. It took effect at Feb 20, 2014, 9:00 AM CST. It was in force for . No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 19, 2014, 3:43 PM CST (21:43 UTC)
In effect from
Feb 20, 2014, 9:00 AM CST
Expired
Feb 20, 2014, 4:42 AM CST
In force
Issued by
NWS Des Moines, IA

Counties Carroll County, IA, Crawford County, IA, Dallas County, IA, Guthrie County, IA, Jasper County, IA, Polk County, IA, Sac County, IA, Tama County, IA

The radar

The Des Moines radar (KDMX), 39 km from the middle of the area, began a volume at 21:40 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 12:00Z, 9.7 hours before the alert went out and 197 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 2014-02-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2014-02-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -50 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1851 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
-50 m²/s²
0-3 km storm-relative helicity
2 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.

071 
WWUS43 KDMX 192143
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
343 PM CST WED FEB 19 2014

...BLIZZARD CONDITIONS TO AFFECT CENTRAL TO NORTHERN IOWA
THURSDAY...

.LOW PRESSURE FROM SOUTHWEST KANSAS WILL INTENSIFY AS IT MOVES TO
NORTHWEST ILLINOIS BY THURSDAY EVENING AND TO LAKE SUPERIOR
THURSDAY NIGHT. RAIN IS EXPECTED TO OVERSPREAD THE AREA TONIGHT
INTO EARLY THURSDAY MORNING...BEFORE TRANSITIONING TO A WINTRY MIX
ACROSS PORTIONS OF NORTHERN IOWA TOWARDS SUNRISE THURSDAY... AND
OVER THE REST OF THE AREA BY MID DAY. MODERATE TO HEAVY SNOWFALL
FOLLOWED BY STRONG AND GUSTY NORTHWEST WINDS WILL PRODUCE BLIZZARD
CONDITIONS THURSDAY AFTERNOON INTO THURSDAY NIGHT.

IAZ033-044-045-050-058>061-200545-
/O.UPG.KDMX.BZ.A.0002.140220T1500Z-140221T1200Z/
/O.NEW.KDMX.WS.W.0002.140220T1500Z-140221T1200Z/
SAC-CRAWFORD-CARROLL-TAMA-GUTHRIE-DALLAS-POLK-JASPER-
INCLUDING THE CITIES OF...SAC CITY...LAKE VIEW...ODEBOLT...
WALL LAKE...SCHALLER...EARLY...DENISON...CARROLL...TAMA...
TOLEDO...TRAER...DYSART...GLADBROOK...GUTHRIE CENTER...PANORA...
BAYARD...CASEY...PERRY...WAUKEE...ADEL...DES MOINES...NEWTON
343 PM CST WED FEB 19 2014

...WINTER STORM WARNING IN EFFECT FROM 9 AM THURSDAY TO 6 AM CST
FRIDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW AND SIGNIFICANT BLOWING SNOW...WHICH
IS IN EFFECT FROM 9 AM THURSDAY TO 6 AM CST FRIDAY. THE BLIZZARD
WATCH IS NO LONGER IN EFFECT.

* TIMING...A WINTRY MIX IS EXPECTED TO DEVELOP OVERNIGHT TONIGHT
  AND TRANSITION TO SNOW THURSDAY DURING THE MID TO LATE MORNING.
  THE SNOW MAY BECOME HEAVY AT TIMES DURING THE DAY THURSDAY.
  STRONG NORTHWEST WINDS ARE FORECAST TO DEVELOP THURSDAY
  AFTERNOON AND PERSIST INTO THE EVENING HOURS... POTENTIALLY
  CREATING BLIZZARD CONDITIONS AT TIMES. WITH LITTLE TO NO SNOW
  CURRENTLY ON THE GROUND...THE CHANCE FOR WIDESPREAD BLIZZARD
  CONDITIONS IS LOW.

* STORM TOTAL SNOW/ICE ACCUMULATIONS...3 TO 5 INCHES OF SNOW IS
  EXPECTED. MINOR ICE AND SLEET ACCUMULATIONS MAY ALSO OCCUR.

* WINDS/VISIBILITY...WINDS WILL SHIFT NORTHWEST AND QUICKLY 
  STRENGTHEN TO 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH POSSIBLE 
  BY THURSDAY AFTERNOON AND EVENING. 

* IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS 
  MAY LEAD TO VERY LOW VISIBILITY AND AS WELL AS QUICKLY COVER 
  ROADS MAKING TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF
SNOW...SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE
ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

IAZ004>007-015>017-023>028-034>039-046>049-200545-
/O.CON.KDMX.BZ.W.0003.140220T1500Z-140221T1200Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-CALHOUN-WEBSTER-
HAMILTON-HARDIN-GRUNDY-BLACK HAWK-GREENE-BOONE-STORY-MARSHALL-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
LAKE MILLS...NORTHWOOD...MANLY...EMMETSBURG...GARNER...BRITT...
KANAWHA...MASON CITY...CLEAR LAKE...POCAHONTAS...LAURENS...
ROLFE...FONDA...GILMORE CITY...HUMBOLDT...EAGLE GROVE...CLARION...
BELMOND...HAMPTON...PARKERSBURG...CLARKSVILLE...SHELL ROCK...
GREENE...APLINGTON...ALLISON...DUMONT...WAVERLY...ROCKWELL CITY...
MANSON...LAKE CITY...POMEROY...FORT DODGE...WEBSTER CITY...
IOWA FALLS...ELDORA...ACKLEY...GRUNDY CENTER...REINBECK...
CONRAD...DIKE...WELLSBURG...WATERLOO...CEDAR FALLS...JEFFERSON...
BOONE...AMES...MARSHALLTOWN
343 PM CST WED FEB 19 2014

...BLIZZARD WARNING REMAINS IN EFFECT FROM 9 AM THURSDAY TO 6 AM
CST FRIDAY...

* TIMING...A WINTRY MIX OF SLEET AND SNOW WILL DEVELOP DURING THE
  OVERNIGHT HOURS TONIGHT ACROSS FAR NORTHERN IOWA... GENERALLY
  ALONG AND NORTH OF HIGHWAY 18. FURTHER SOUTH...RAIN WILL BE
  COMMON UNTIL AFTER SUNRISE THURSDAY. THEN THE PRECIPITATION IS
  FORECAST TO TRANSITION TO ALL SNOW MID TO LATE THURSDAY MORNING.
  MODERATE TO HEAVY WET SNOW WILL FALL THROUGH THE LATE MORNING
  INTO THURSDAY AFTERNOON. THUNDERSNOW IS POSSIBLE THURSDAY
  THROUGH MID DAY AND COULD PRODUCE SNOWFALL RATES OF 2 INCHES
  PER HOUR AT TIMES. THE VERY STRONG NORTHWEST WINDS DEVELOP IN
  THE AFTERNOON THURSDAY AND WILL CREATE WIDESPREAD BLIZZARD
  CONDITIONS INTO THURSDAY NIGHT.

* STORM TOTAL SNOW/ICE ACCUMULATIONS...A WIDESPREAD BAND OF 5 TO 9
  INCHES OF SNOW IS ANTICIPATED. HIGHER AMOUNTS ARE POSSIBLE...
  ESPECIALLY IF THUNDERSNOW DEVELOPS. SOME MINOR SLEET AMOUNTS
  ARE FORECAST THURSDAY MORNING GENERALLY BETWEEN THE HIGHWAY 3
  AND HIGHWAY 30 CORRIDORS.

* WINDS/VISIBILITY...WINDS ARE EXPECTED TO SHIFT NORTHWEST LATE 
  THURSDAY MORNING AND QUICKLY STRENGTHEN DURING THE AFTERNOON 
  HOURS TO 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH. THE VERY 
  STRONG NORTHWEST WINDS WILL LEAD TO NEAR WHITEOUT CONDITIONS 
  AT TIMES THROUGH THURSDAY NIGHT. 

* IMPACTS...THE BAND OF WET AND HEAVY SNOW WILL STICK TO TREES 
  AND POWERLINES POTENTIALLY CAUSING DAMAGE ONCE WINDS INCREASE. 
  VERY LOW VISIBILITY AND INTENSE SNOWFALL RATES ARE LIKELY TO 
  QUICKLY COVER ROADS AND MAKE TRAVEL HAZARDOUS TO NEARLY 
  IMPOSSIBLE AT TIMES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. 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.

&&

$$

IAZ057-062-071>074-200545-
/O.UPG.KDMX.BZ.A.0002.140220T1500Z-140221T1200Z/
/O.NEW.KDMX.WW.Y.0013.140220T1500Z-140221T1200Z/
AUDUBON-POWESHIEK-ADAIR-MADISON-WARREN-MARION-
INCLUDING THE CITIES OF...AUDUBON...EXIRA...GRINNELL...
GREENFIELD...STUART...ADAIR...FONTANELLE...WINTERSET...EARLHAM...
INDIANOLA...NORWALK...CARLISLE...PELLA...KNOXVILLE
343 PM CST WED FEB 19 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM THURSDAY TO 6 AM
CST FRIDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM 9 AM THURSDAY TO 6 AM CST FRIDAY. THE BLIZZARD WATCH IS NO
LONGER IN EFFECT.

* TIMING...A WINTRY MIX IS EXPECTED TO DEVELOP OVERNIGHT TONIGHT
  AND TRANSITION TO SNOW THURSDAY DURING THE MID TO LATE MORNING.
  THE SNOW MAY BECOME HEAVY AT TIMES DURING THE DAY THURSDAY.
  STRONG NORTHWEST WINDS ARE FORECAST TO DEVELOP THURSDAY
  AFTERNOON AND PERSIST INTO THE EVENING HOURS... POTENTIALLY
  CREATING BLIZZARD CONDITIONS. HOWEVER...WITH THE LOWER SNOW
  AMOUNTS AND LITTLE TO NO SNOW CURRENTLY ON THE GROUND...
  CONFIDENCE IS FOR WIDESPREAD BLIZZARD CONDITIONS IS LOW.

* STORM TOTAL SNOW/ICE ACCUMULATIONS...2 TO 4 INCHES OF SNOW IS
  EXPECTED. MINOR ICE AND SLEET ACCUMULATIONS MAY ALSO OCCUR.

* WINDS/VISIBILITY...WINDS WILL SHIFT NORTHWEST AND QUICKLY 
  STRENGTHEN TO 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH POSSIBLE 
  BY THURSDAY AFTERNOON AND EVENING. 

* IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS 
  MAY LEAD TO VERY LOW VISIBILITY AND AS WELL AS QUICKLY COVER 
  ROADS MAKING TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

IAZ070-200545-
/O.NEW.KDMX.WW.Y.0013.140220T1500Z-140221T1200Z/
CASS-
INCLUDING THE CITY OF...ATLANTIC
343 PM CST WED FEB 19 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM THURSDAY TO 6 AM
CST FRIDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM 9 AM THURSDAY TO 6 AM CST FRIDAY.

* TIMING...A WINTRY MIX IS EXPECTED TO DEVELOP OVERNIGHT TONIGHT
  AND TRANSITION TO SNOW THURSDAY DURING THE EARLY TO MID MORNING.
  THE SNOW MAY BECOME HEAVY AT TIMES DURING THE DAY THURSDAY.
  STRONG NORTHWEST WINDS ARE FORECAST TO DEVELOP THURSDAY
  AFTERNOON AND PERSIST INTO THE EVENING HOURS... POTENTIALLY
  CREATING BLIZZARD CONDITIONS. HOWEVER...WITH THE LOWER SNOW
  AMOUNTS AND LITTLE TO NO SNOW CURRENTLY ON THE GROUND...
  CONFIDENCE IS FOR WIDESPREAD BLIZZARD CONDITIONS IS LOW.

* STORM TOTAL SNOW/ICE ACCUMULATIONS...2 TO 4 INCHES OF SNOW IS
  EXPECTED. MINOR ICE AND SLEET ACCUMULATIONS MAY ALSO OCCUR.

* WINDS/VISIBILITY...WINDS WILL SHIFT NORTHWEST AND QUICKLY 
  STRENGTHEN TO 25 TO 35 MPH WITH GUSTS TO NEAR 50 MPH POSSIBLE 
  BY THURSDAY AFTERNOON AND EVENING. 

* IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS
  MAY LEAD TO VERY LOW VISIBILITY AND AS WELL AS QUICKLY COVER
  ROADS MAKING TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$
2 follow-up statements
031 
WWUS43 KDMX 200344
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
944 PM CST WED FEB 19 2014

...BLIZZARD CONDITIONS TO AFFECT CENTRAL TO NORTHERN IOWA
THURSDAY...

.LOW PRESSURE WILL INTENSIFY AS IT MOVES FROM KANSAS INTO
WISCONSIN ON THURSDAY. RAIN IS EXPECTED TONIGHT TRANSITIONING TO
SNOW FROM WEST TO EAST ON THURSDAY. MODERATE TO HEAVY SNOWFALL
AMOUNTS ARE EXPECTED ALONG WITH STRONG WINDS BY AFTERNOON
PRODUCING POOR VISIBILITIES AND BLIZZARD CONDITIONS.  

IAZ004>007-015>017-023>028-034>039-046>049-201145-
/O.CON.KDMX.BZ.W.0003.140220T1500Z-140221T1200Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-CALHOUN-WEBSTER-
HAMILTON-HARDIN-GRUNDY-BLACK HAWK-GREENE-BOONE-STORY-MARSHALL-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
LAKE MILLS...NORTHWOOD...MANLY...EMMETSBURG...GARNER...BRITT...
KANAWHA...MASON CITY...CLEAR LAKE...POCAHONTAS...LAURENS...
ROLFE...FONDA...GILMORE CITY...HUMBOLDT...EAGLE GROVE...CLARION...
BELMOND...HAMPTON...PARKERSBURG...CLARKSVILLE...SHELL ROCK...
GREENE...APLINGTON...ALLISON...DUMONT...WAVERLY...ROCKWELL CITY...
MANSON...LAKE CITY...POMEROY...FORT DODGE...WEBSTER CITY...
IOWA FALLS...ELDORA...ACKLEY...GRUNDY CENTER...REINBECK...
CONRAD...DIKE...WELLSBURG...WATERLOO...CEDAR FALLS...JEFFERSON...
BOONE...AMES...MARSHALLTOWN
944 PM CST WED FEB 19 2014

...BLIZZARD WARNING REMAINS IN EFFECT FROM 9 AM THURSDAY TO 6 AM
CST FRIDAY...

* TIMING...RAIN WILL OVERSPREAD MUCH OF CENTRAL IOWA TONIGHT...
  MIXED AT TIMES WITH SLEET AND EVEN SOME SNOW IN NORTHERN IOWA.
  ON THURSDAY...A TRANSITION FROM RAIN TO ALL SNOW WILL TAKE PLACE
  FROM WEST TO EAST AS COLDER AIR WORKS INTO THE STATE. BY
  AFTERNOON...PERIODS OF HEAVY SNOW ARE EXPECTED ACROSS MUCH OF
  THE WARNING AREA WITH SNOWFALL RATES OF 1 TO 2 INCHES PER HOUR.
  SOME THUNDERSNOW IS ALSO EXPECTED WHICH MAY ENHANCE RATES EVEN
  MORE. THE SNOW IS EXPECTED TO END BY THURSDAY EVENING AS THE
  SYSTEM PULLS AWAY.  

* STORM TOTAL SNOW/ICE ACCUMULATIONS...A WIDESPREAD BAND OF 5 TO
  10 INCHES OF SNOW IS ANTICIPATED. ISOLATED HIGHER AMOUNTS WILL
  BE POSSIBLE IN AREAS THAT SEE ENHANCED RATES DUE TO THUNDERSNOW. 

* WINDS/VISIBILITY...WINDS WILL BECOME NORTHWEST ON THURSDAY AND
  INCREASE INTO THE AFTERNOON. SUSTAINED WINDS OF 25 TO 30 MPH ARE
  LIKELY ALONG WITH GUSTS OF 45 TO 50 MPH. THIS WILL PRODUCE
  WHITEOUT CONDITIONS...ESPECIALLY IN RURAL AREA WITH LIFE-
  THREATENING BLIZZARD CONDITIONS.

* IMPACTS...THE BAND OF WET AND HEAVY SNOW WILL STICK TO TREES AND
  POWERLINES POTENTIALLY CAUSING DAMAGE ONCE WINDS INCREASE. VERY
  LOW VISIBILITY AND INTENSE SNOWFALL RATES ARE LIKELY TO QUICKLY
  COVER ROADS AND MAKE TRAVEL HAZARDOUS TO IMPOSSIBLE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. 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.

&&

$$

IAZ033-044-045-050-058>061-201145-
/O.CON.KDMX.WS.W.0002.140220T1500Z-140221T1200Z/
SAC-CRAWFORD-CARROLL-TAMA-GUTHRIE-DALLAS-POLK-JASPER-
INCLUDING THE CITIES OF...SAC CITY...LAKE VIEW...ODEBOLT...
WALL LAKE...SCHALLER...EARLY...DENISON...CARROLL...TAMA...
TOLEDO...TRAER...DYSART...GLADBROOK...GUTHRIE CENTER...PANORA...
BAYARD...CASEY...PERRY...WAUKEE...ADEL...DES MOINES...NEWTON
944 PM CST WED FEB 19 2014

...WINTER STORM WARNING REMAINS IN EFFECT FROM 9 AM THURSDAY TO
6 AM CST FRIDAY...

* TIMING...RAIN WILL OVERSPREAD THE AREA TONIGHT...MIXED AT TIMES
  WITH SLEET. ON THURSDAY...A TRANSITION FROM RAIN TO ALL SNOW
  WILL TAKE PLACE FROM WEST TO EAST AS COLDER AIR WORKS INTO THE
  STATE. BY AFTERNOON...PERIODS OF HEAVY SNOW ARE EXPECTED ACROSS
  MUCH OF THE WARNING AREA WITH SNOWFALL RATES OF UP TO AN INCH
  PER HOUR. SOME THUNDERSNOW IS ALSO EXPECTED WHICH MAY ENHANCE
  RATES EVEN MORE. THE SNOW IS EXPECTED TO END BY THURSDAY EVENING
  AS THE SYSTEM PULLS AWAY.

* STORM TOTAL SNOW/ICE ACCUMULATIONS...3 TO 6 INCHES OF SNOW IS
  EXPECTED WITH ISOLATED HIGHER AMOUNTS.

* WINDS/VISIBILITY...WINDS WILL BECOME NORTHWEST ON THURSDAY AND
  INCREASE BY AFTERNOON. SUSTAINED WINDS OF 20 TO 25 MPH WITH
  HIGHER GUSTS ARE EXPECTED THROUGH THE AFTERNOON. NEAR WHITEOUT
  CONDITIONS ARE EXPECTED BY AFTERNOON WITH NEAR BLIZZARD
  CONDITIONS AT TIMES.

* IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS
  MAY LEAD TO VERY LOW VISIBILITY AS WELL AS QUICKLY COVER ROADS
  MAKING TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

IAZ081>084-092>094-201145-
/O.EXA.KDMX.WW.Y.0013.140220T1500Z-140221T1200Z/
ADAMS-UNION-CLARKE-LUCAS-TAYLOR-RINGGOLD-DECATUR-
INCLUDING THE CITIES OF...CORNING...CRESTON...OSCEOLA...
CHARITON...BEDFORD...LENOX...NEW MARKET...MOUNT AYR...LAMONI...
LEON
944 PM CST WED FEB 19 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 AM THURSDAY TO 6 AM
CST FRIDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM 9 AM THURSDAY TO 6 AM CST FRIDAY.

* TIMING...RAIN WILL OVERSPREAD THE AREA TONIGHT...MIXED AT TIMES
  WITH SLEET. ON THURSDAY...A TRANSITION FROM RAIN TO ALL SNOW
  WILL TAKE PLACE FROM WEST TO EAST AS COLDER AIR WORKS INTO THE
  STATE. BY MIDDAY...PERIODS OF SNOW ARE EXPECTED ACROSS MUCH OF
  THE AREA BEFORE TAPERING OFF BY LATE AFTERNOON.

* STORM TOTAL SNOW/ICE ACCUMULATIONS...2 TO 5 INCHES OF SNOW IS
  EXPECTED. 

* WINDS/VISIBILITY...WINDS WILL SHIFT NORTHWEST AND QUICKLY
  STRENGTHEN TO 20 TO 25 MPH WITH HIGHER GUSTS BY THURSDAY
  AFTERNOON. THIS WILL PRODUCE BLOWING SNOW WITH VISIBILITIES OF
  ONE HALF MILE AT TIMES...ESPECIALLY IN THE AFTERNOON INTO THE
  EVENING.  

* IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS
  MAY LEAD TO LOW VISIBILITY AS WELL AS QUICKLY COVER ROADS
  MAKING TRAVEL HAZARDOUS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

IAZ057-062-070>074-201145-
/O.CON.KDMX.WW.Y.0013.140220T1500Z-140221T1200Z/
AUDUBON-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
INCLUDING THE CITIES OF...AUDUBON...EXIRA...GRINNELL...ATLANTIC...
GREENFIELD...STUART...ADAIR...FONTANELLE...WINTERSET...EARLHAM...
INDIANOLA...NORWALK...CARLISLE...PELLA...KNOXVILLE
944 PM CST WED FEB 19 2014

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 9 AM THURSDAY
TO 6 AM CST FRIDAY...

* TIMING...RAIN WILL OVERSPREAD THE AREA TONIGHT...MIXED AT TIMES
  WITH SLEET. ON THURSDAY...A TRANSITION FROM RAIN TO ALL SNOW
  WILL TAKE PLACE FROM WEST TO EAST AS COLDER AIR WORKS INTO THE
  STATE. BY MIDDAY...PERIODS OF SNOW ARE EXPECTED ACROSS MUCH OF
  THE AREA BEFORE TAPERING OFF BY LATE AFTERNOON.

* STORM TOTAL SNOW/ICE ACCUMULATIONS...2 TO 5 INCHES OF SNOW IS
  EXPECTED. 

* WINDS/VISIBILITY...WINDS WILL SHIFT NORTHWEST AND QUICKLY
  STRENGTHEN TO 20 MPH WITH HIGHER GUSTS BY THURSDAY AFTERNOON AND
  EVENING. THIS WILL PRODUCE BLOWING SNOW WITH VISIBILITIES OF ONE
  HALF MILE AT TIMES...ESPECIALLY IN THE AFTERNOON INTO THE
  EVENING. 

* IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS
  MAY LEAD TO LOW VISIBILITY AS WELL AS QUICKLY COVER ROADS MAKING
  TRAVEL HAZARDOUS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$
314 
WWUS43 KDMX 201042
WSWDMX

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
442 AM CST THU FEB 20 2014

...SIGNIFICANT WINTER STORM AND BLIZZARD CONDITIONS TO IMPACT
MUCH OF CENTRAL TO NORTHERN IOWA TODAY AND TONIGHT...

.LOW PRESSURE WILL RAPIDLY INTENSIFY AS IT MOVES FROM KANSAS AND
THROUGH FAR SOUTHEAST IOWA AND INTO WISCONSIN TODAY. RAIN WILL
TRANSITION TO SNOW FROM WEST TO EAST. MODERATE TO HEAVY SNOWFALL
AMOUNTS ARE EXPECTED ALONG WITH EXTREMELY STRONG WINDS BY
AFTERNOON PRODUCING POOR VISIBILITIES AND BLIZZARD CONDITIONS.

IAZ050-059>061-201845-
/O.CAN.KDMX.WS.W.0002.140220T1500Z-140221T1200Z/
/O.EXB.KDMX.BZ.W.0003.140220T1800Z-140221T1500Z/
TAMA-DALLAS-POLK-JASPER-
INCLUDING THE CITIES OF...TAMA...TOLEDO...TRAER...DYSART...
GLADBROOK...PERRY...WAUKEE...ADEL...DES MOINES...NEWTON
442 AM CST THU FEB 20 2014

...BLIZZARD WARNING IN EFFECT FROM NOON TODAY TO 9 AM CST
FRIDAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 9 AM CST FRIDAY.
THE WINTER STORM WARNING HAS BEEN CANCELLED. 

* TIMING...RAIN WILL TRANSITION TO SNOW LATE THIS MORNING INTO THE
  EARLY AFTERNOON HOURS. A PERIOD OF THUNDERSNOW MAY OCCUR AND
  CREATE HEAVY SNOW RATES AND RAPIDLY DETERIORATING CONDITIONS.
  LIGHT WINDS THIS MORNING WILL INCREASE SIGNIFICANTLY THIS
  AFTERNOON. 

* STORM TOTAL SNOW ACCUMULATIONS...3 TO 6 INCHES OF SNOW IS
  EXPECTED WITH ISOLATED HIGHER AMOUNTS.

* WINDS/VISIBILITY...WINDS WILL BECOME NORTHWEST ON TODAY AND
  INCREASE RAPIDLY BY AFTERNOON. SUSTAINED WINDS OF 25 TO 35 MPH
  WITH GUSTS IN EXCESS OF 55 MPH BY LATE AFTERNOON AND EARLY
  EVENING. THIS WILL PRODUCE WHITEOUT CONDITIONS...ESPECIALLY IN
  RURAL AREA WITH LIFE-THREATENING BLIZZARD CONDITIONS.

* IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS 
  MAY LEAD TO VERY LOW VISIBILITY AS WELL AS QUICKLY COVER ROADS 
  MAKING TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. 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.

&&

$$

IAZ033-044-045-058-201845-
/O.CAN.KDMX.WS.W.0002.140220T1500Z-140221T1200Z/
/O.EXA.KDMX.BZ.W.0003.140220T1500Z-140221T1200Z/
SAC-CRAWFORD-CARROLL-GUTHRIE-
INCLUDING THE CITIES OF...SAC CITY...LAKE VIEW...ODEBOLT...
WALL LAKE...SCHALLER...EARLY...DENISON...CARROLL...
GUTHRIE CENTER...PANORA...BAYARD...CASEY
442 AM CST THU FEB 20 2014

...BLIZZARD WARNING IN EFFECT FROM 9 AM THIS MORNING TO 6 AM CST
FRIDAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM 9 AM THIS MORNING TO 6 AM CST
FRIDAY. THE WINTER STORM WARNING HAS BEEN CANCELLED. 

* TIMING...RAIN WILL TRANSITION TO SNOW THIS MORNING. A PERIOD OF
  THUNDERSNOW MAY OCCUR AND CREATE HEAVY SNOW RATES AND RAPIDLY
  DETERIORATING CONDITIONS. LIGHT WINDS THIS MORNING WILL INCREASE
  SIGNIFICANTLY LATE THIS MORNING AND INTO THIS AFTERNOON.

* STORM TOTAL SNOW/ICE ACCUMULATIONS...3 TO 7 INCHES OF SNOW IS
  EXPECTED WITH ISOLATED HIGHER AMOUNTS.

* WINDS/VISIBILITY...WINDS WILL BECOME NORTHWEST ON TODAY AND
  INCREASE RAPIDLY BY LATE MORNING. SUSTAINED WINDS OF 25 TO 35
  MPH WITH GUSTS IN EXCESS OF 55 MPH. THIS WILL PRODUCE WHITEOUT
  CONDITIONS...ESPECIALLY IN RURAL AREA WITH LIFE-THREATENING
  BLIZZARD CONDITIONS.

* IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS 
  MAY LEAD TO VERY LOW VISIBILITY AS WELL AS QUICKLY COVER ROADS 
  MAKING TRAVEL HAZARDOUS TO NEARLY IMPOSSIBLE AT TIMES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. 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.

&&

$$

IAZ057-070-071-201845-
/O.UPG.KDMX.WW.Y.0013.140220T1500Z-140221T1200Z/
/O.EXA.KDMX.BZ.W.0003.140220T1500Z-140221T1200Z/
AUDUBON-CASS-ADAIR-
INCLUDING THE CITIES OF...AUDUBON...EXIRA...ATLANTIC...
GREENFIELD...STUART...ADAIR...FONTANELLE
442 AM CST THU FEB 20 2014

...BLIZZARD WARNING IN EFFECT FROM 9 AM THIS MORNING TO 6 AM CST
FRIDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM 9 AM THIS MORNING TO 6 AM CST
FRIDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. 

* TIMING...RAIN WILL TRANSITION TO SNOW THIS MORNING. A PERIOD OF
  THUNDERSNOW MAY OCCUR AND CREATE HEAVY SNOW RATES AND RAPIDLY
  DETERIORATING CONDITIONS. LIGHT WINDS THIS MORNING WILL INCREASE
  SIGNIFICANTLY LATE THIS MORNING AND INTO THIS AFTERNOON.

* STORM TOTAL SNOW/ICE ACCUMULATIONS...3 TO 7 INCHES OF SNOW IS
  EXPECTED WITH ISOLATED HIGHER AMOUNTS.

* WINDS/VISIBILITY...WINDS WILL BECOME NORTHWEST ON TODAY AND
  INCREASE RAPIDLY BY LATE MORNING. SUSTAINED WINDS OF 25 TO 35
  MPH WITH GUSTS IN EXCESS OF 55 MPH. THIS WILL PRODUCE WHITEOUT
  CONDITIONS...ESPECIALLY IN RURAL AREA WITH LIFE-THREATENING
  BLIZZARD CONDITIONS.

* IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS 
  MAY LEAD TO LOW VISIBILITY AS WELL AS QUICKLY COVER ROADS 
  MAKING TRAVEL HAZARDOUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. 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.

&&

$$

IAZ006-007-016-017-025>028-036>039-047>049-201845-
/O.EXT.KDMX.BZ.W.0003.140220T1800Z-140221T1500Z/
WINNEBAGO-WORTH-HANCOCK-CERRO GORDO-WRIGHT-FRANKLIN-BUTLER-BREMER-
HAMILTON-HARDIN-GRUNDY-BLACK HAWK-BOONE-STORY-MARSHALL-
INCLUDING THE CITIES OF...FOREST CITY...LAKE MILLS...NORTHWOOD...
MANLY...GARNER...BRITT...KANAWHA...MASON CITY...CLEAR LAKE...
EAGLE GROVE...CLARION...BELMOND...HAMPTON...PARKERSBURG...
CLARKSVILLE...SHELL ROCK...GREENE...APLINGTON...ALLISON...
DUMONT...WAVERLY...WEBSTER CITY...IOWA FALLS...ELDORA...ACKLEY...
GRUNDY CENTER...REINBECK...CONRAD...DIKE...WELLSBURG...WATERLOO...
CEDAR FALLS...BOONE...AMES...MARSHALLTOWN
442 AM CST THU FEB 20 2014

...BLIZZARD WARNING NOW IN EFFECT FROM NOON TODAY TO 9 AM CST
FRIDAY...

* TIMING...A WINTRY MIX OF PRECIPITATION IS POSSIBLE THIS MORNING
  BEFORE TRANSITION TO ALL SNOW THIS AFTERNOON. THE WATERLOO AREA
  MAY NOT TRANSITION UNTIL MID AFTERNOON. PERIODS OF HEAVY SNOW
  ARE EXPECTED ACROSS MUCH OF THE WARNING AREA WITH SNOWFALL RATES
  OF 1 TO 2 INCHES PER HOUR. SOME THUNDERSNOW IS ALSO EXPECTED
  WHICH MAY ENHANCE RATES EVEN MORE. 

* STORM TOTAL SNOW/ICE ACCUMULATIONS...A WIDESPREAD BAND OF 5 TO
  10 INCHES OF SNOW IS ANTICIPATED THOUGH LESSER AMOUNTS ON THE
  FAR SOUTHEAST EDGE ARE LIKELY. ISOLATED HIGHER AMOUNTS WILL BE
  POSSIBLE IN AREAS THAT SEE ENHANCED RATES DUE TO THUNDERSNOW.

* WINDS/VISIBILITY...LIGHT EAST WINDS THIS MORNING WILL BECOME
  NORTHWEST AND INCREASE RAPIDLY THIS AFTERNOON. SUSTAINED WINDS
  OF 25 TO 35 MPH ARE LIKELY ALONG WITH GUSTS IN EXCESS OF 55 MPH
  POSSIBLE. THIS WILL PRODUCE WHITEOUT CONDITIONS...ESPECIALLY IN
  RURAL AREA WITH LIFE-THREATENING BLIZZARD CONDITIONS.

* IMPACTS...THE BAND OF WET AND HEAVY SNOW WILL STICK TO TREES 
  AND POWERLINES POTENTIALLY CAUSING DAMAGE ONCE WINDS INCREASE. 
  VERY LOW VISIBILITY AND INTENSE SNOWFALL RATES ARE LIKELY TO 
  QUICKLY COVER ROADS AND MAKE TRAVEL HAZARDOUS TO IMPOSSIBLE AT 
  TIMES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. 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.

&&

$$

IAZ004-005-015-023-024-034-035-046-201845-
/O.CON.KDMX.BZ.W.0003.140220T1500Z-140221T1200Z/
EMMET-KOSSUTH-PALO ALTO-POCAHONTAS-HUMBOLDT-CALHOUN-WEBSTER-
GREENE-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...EMMETSBURG...
POCAHONTAS...LAURENS...ROLFE...FONDA...GILMORE CITY...HUMBOLDT...
ROCKWELL CITY...MANSON...LAKE CITY...POMEROY...FORT DODGE...
JEFFERSON
442 AM CST THU FEB 20 2014

...BLIZZARD WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO
6 AM CST FRIDAY...

* TIMING...A WINTRY MIX OF PRECIPITATION IS POSSIBLE EARLY THIS
  MORNING BEFORE TRANSITION TO ALL SNOW. PERIODS OF HEAVY SNOW ARE
  EXPECTED ACROSS MUCH OF THE WARNING AREA WITH SNOWFALL RATES OF
  1 TO 2 INCHES PER HOUR. LOCAL THUNDERSNOW MAY OCCUR WHICH MAY
  ENHANCE RATES EVEN MORE.

* STORM TOTAL SNOW/ICE ACCUMULATIONS...A WIDESPREAD BAND OF 4 TO 8
  INCHES OF SNOW IS ANTICIPATED. ISOLATED HIGHER AMOUNTS WILL BE
  POSSIBLE IN AREAS THAT SEE ENHANCED RATES DUE TO THUNDERSNOW.

* WINDS/VISIBILITY...LIGHT WINDS THIS MORNING WILL BECOME
  NORTHWEST BY LATE MORNING AND INTO THE AFTERNOON. SUSTAINED
  WINDS OF 25 TO 35 MPH ARE LIKELY ALONG WITH GUSTS OF 50 MPH.
  THIS WILL PRODUCE WHITEOUT CONDITIONS...ESPECIALLY IN RURAL AREA
  WITH LIFE-THREATENING BLIZZARD CONDITIONS.

* IMPACTS...THE BAND OF WET AND HEAVY SNOW WILL STICK TO TREES 
  AND POWERLINES POTENTIALLY CAUSING DAMAGE ONCE WINDS INCREASE. 
  VERY LOW VISIBILITY AND INTENSE SNOWFALL RATES ARE LIKELY TO 
  QUICKLY COVER ROADS AND MAKE TRAVEL HAZARDOUS TO IMPOSSIBLE AT 
  TIMES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. 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.

&&

$$

IAZ075-201845-
/O.EXB.KDMX.WW.Y.0013.140220T1800Z-140221T1200Z/
MAHASKA-
INCLUDING THE CITY OF...OSKALOOSA
442 AM CST THU FEB 20 2014

...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO 6 AM CST
FRIDAY...

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM NOON TODAY TO 6 AM CST FRIDAY.

* TIMING...RAIN WILL TRANSITION TO SNOW THIS AFTERNOON. A BRIEF
  PERIOD OF HEAVY SNOW LEADING TO RAPIDLY DETERIORATING CONDITIONS
  IS EXPECTED.

* STORM TOTAL SNOW/ICE ACCUMULATIONS...2 TO 4 INCHES OF SNOW IS
  EXPECTED.

* WINDS/VISIBILITY...WINDS WILL SHIFT NORTHWEST AND QUICKLY
  STRENGTHEN TO 25 TO 55 MPH WITH GUSTS IN EXCESS OF 50 MPH. THIS
  WILL PRODUCE BLOWING SNOW WITH VISIBILITIES OF ONE HALF MILE AT
  TIMES...ESPECIALLY IN THE AFTERNOON INTO THE EVENING.

* IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS 
  MAY LEAD TO LOW VISIBILITY AS WELL AS QUICKLY COVER ROADS 
  MAKING TRAVEL HAZARDOUS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

IAZ062-072>074-081>084-092>094-201845-
/O.EXT.KDMX.WW.Y.0013.140220T1800Z-140221T1200Z/
POWESHIEK-MADISON-WARREN-MARION-ADAMS-UNION-CLARKE-LUCAS-TAYLOR-
RINGGOLD-DECATUR-
INCLUDING THE CITIES OF...GRINNELL...WINTERSET...EARLHAM...
INDIANOLA...NORWALK...CARLISLE...PELLA...KNOXVILLE...CORNING...
CRESTON...OSCEOLA...CHARITON...BEDFORD...LENOX...NEW MARKET...
MOUNT AYR...LAMONI...LEON
442 AM CST THU FEB 20 2014

...WINTER WEATHER ADVISORY NOW IN EFFECT FROM NOON TODAY TO 6 AM
CST FRIDAY...

* TIMING...RAIN WILL TRANSITION TO SNOW FROM WEST TO EAST THIS
  MORNING AND INTO THE EARLY AFTERNOON. A BRIEF PERIOD OF HEAVY
  SNOW LEADING TO RAPIDLY DETERIORATING CONDITIONS IS EXPECTED.

* STORM TOTAL SNOW/ICE ACCUMULATIONS...2 TO 5 INCHES OF SNOW IS
  EXPECTED.

* WINDS/VISIBILITY...WINDS WILL SHIFT NORTHWEST AND QUICKLY
  STRENGTHEN TO 25 TO 55 MPH WITH GUSTS IN EXCESS OF 50 MPH. THIS
  WILL PRODUCE BLOWING SNOW WITH VISIBILITIES OF ONE HALF MILE AT
  TIMES...ESPECIALLY IN THE AFTERNOON INTO THE EVENING.

* IMPACTS...THE BAND OF WET AND HEAVY SNOW AND VERY STRONG WINDS 
  MAY LEAD TO LOW VISIBILITY AS WELL AS QUICKLY COVER ROADS 
  MAKING TRAVEL HAZARDOUS.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

$$

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 Feb 19, 3:37 PM CST, 6 minutes earlier.

Area forecast discussion, Feb 19, 3:37 PM CST, 6 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
337 PM CST WED FEB 19 2014

.SHORT TERM /TONIGHT/...
ISSUED AT 259 PM CST WED FEB 19 2014

FORECAST CONCERNS OVERNIGHT REVOLVE AROUND PRECIPITATION AND
PRECIPITATION TYPE AS MUCH ANTICIPATED LOW PRESSURE SYSTEM BEGINS TO
AFFECT THE REGION. STRONG SURGE OF THETA-E ADVECTION WILL PUSH INTO
SOUTHERN IOWA THROUGHOUT THE OVERNIGHT...BRINGING CHANCES FOR
PRECIPITATION. INITIALLY THERE IS SOME LOW LEVEL DRY AIR TO
OVERCOME...HOWEVER MOISTURE TRANSPORT WILL BE STRONG INTO THE REGION
AND WILL QUICKLY SATURATE. GIVEN CURRENT ONGOING PRECIPITATION IN
CENTRAL KS/MO FEEL HIGH RES MODELS HAVE A GOOD FEEL FOR PROGRESSION
OF PRECIPITATION AND HAVE TRENDED TOWARDS HIGH RES MODELS FOR
TIMING. NEXT CONCERN BECOMES HEAVY RAIN POTENTIAL. AMOUNT OF
INSTABILITY AND PWAT VALUES REMAIN SEASONALLY SIGNIFICANT AND EXPECT
THUNDERSTORMS ACROSS MUCH OF THE SOUTH WHICH COULD HELP TO PROMOTE
HIGH RAINFALL RATES AT TIMES. GIVEN PWATS OF GENERALLY AROUND 0.75
INCHES...WHICH IS NEAR 75TH PERCENTILE FOR FEB...AND MAY BE
HIGHER...COULD SEE HEAVY RAIN...AND HAVE INCLUDED MENTION IN
FORECAST. SEE HYDROLOGY DISCUSSION FOR ADDITIONAL INFORMATION ON
FLASH FLOOD AND ICE JAM POTENTIAL.

NEXT FORECAST CHALLENGE IS PRECIPITATION TYPE...ESPECIALLY IN THE
NORTH. FOR MAJORITY OF CWA PRECIPITATION WILL REMAIN RAIN THROUGH
THE NIGHT...THOUGH SOUNDINGS INDICATE POTENTIAL FOR WINTRY MIX
ACROSS NORTHERN IOWA...ESPECIALLY TOWARDS THE EARLY MORNING HOURS.
SOUNDINGS ARE INDICATING FAIRLY GOOD SATURATION THROUGH
COLUMN...WITH TEMPERATURES GENERALLY WITHIN A RANGE TO KEEP
PRECIPITATION OF THE SAME TYPE...WHETHER RAIN OR SNOW.
HOWEVER...BEFORE SATURATION OCCURS MAY SEE BRIEF PERIODS OF FREEZING
RAIN POSSIBLE WITHOUT ICE INTRODUCTION BEFORE CHANGING. IN
ADDITION...MAY SEE BRIEF PERIODS OF FREEZING RAIN OR SLEET AS
CONDITIONS COOL. GIVEN GENERALLY HIGH CONFIDENCE IN PRECIPITATION
REMAINING PRIMARILY RAIN OR SNOW OR RAIN/SNOW MIX WITH ONLY ISOLATED
AND BRIEF PERIODS OF ANY WINTRY MIX EXPECTED HAVE OPTED TO NOT ISSUE
ADDITIONAL HEADLINES ATTM BEFORE BLIZZARD WARNING TAKES
EFFECT...THOUGH WILL NEED TO BE MONITORED.

.LONG TERM /THURSDAY THROUGH WEDNESDAY/...
ISSUED AT 259 PM CST WED FEB 19 2014

MODELS ARE COMING INTO AGREEMENT WITH THE EVOLUTION OF THE STORM
SYSTEM. NAM WAS ACTUALLY THE ODD MODEL OUT THIS MORNING WITH
ECMWF...GEM...RGEM...AND GFS PRETTY MUCH TOGETHER. THE 18Z NAM HAS
ARRIVED AND OTHER THAN A SLIGHT EWD SHIFT IN THE SNOW BAND...IS
CLOSE TO THE PACK NOW. WILL BEGIN THE SYSTEM AS MIXED RAIN AND
SNOW WEST AND RAIN EAST WITH TRANSITION ADVANCING EAST AS DURING
THE DAY. IT WILL BE TO THE I-35 CORRIDOR 16 TO 18Z AND ACROSS THE
CWA BY MID TO LATE AFTERNOON. WINDS WILL BE THE ISSUE WITH THE
SNOW. THOUGH 5 TO 9 INCH TOTALS ARE NOT EXTREME...WITH THE WINDS
THE BLIZZARD WARNING IS SUPPORTED. SOUTH OF THE BLIZZARD WARNING
HAVE ISSUED A WINTER STORM WARNING AND AN ADVISORY SOUTH OF THAT
PROBLEM WITH THE STORM IS IT IS A SPRING STORM AND SURFACE
TEMPERATURES WILL BE FREEZING OR A LITTLE ABOVE THROUGH THE EVENT
IN MOST AREAS. THAT WILL LIMIT THE BLOWING POTENTIAL AND MAY KEEP
VISIBILITY ABOVE A QUARTER MILE MUCH OF THE TIME. STILL...THERE
WILL BE A PERIOD OF HEAVY SNOWFALL CLOSE TO THE CHANGE OVER LINE
AND THAT ITSELF WILL TAKE VISIBILITY DOWN. THE REST OF THE
FORECASTIS RELATIVELY QUITE. A WEAK SYSTEM PUSHES THROUGH ON MON
ALONG THE ARCTIC FRONT AND WILL BRING A CHANCE OF LIGHT SNOW.
AFTER THAT TEMPERATURES TANK WELL BELOW NORMAL FOR THE REST OF THE
FORECAST.

&&

.AVIATION...19/18Z
ISSUED AT 1125 AM CST WED FEB 19 2014

CONDITIONS WILL REMAIN VFR THOUGH 00Z...WITH INCREASING LOW VFR
CEILINGS AT SOUTHERN SITES KDSM/KOTM NEAR 06Z AHEAD OF APPROACHING
LOW PRESSURE SYSTEM. LOW PRESSURE SYSTEM WILL BRING RA AND TS
CHANCES TO SOUTHERN SITES OVERNIGHT...PUSHING FURTHER NORTH ALONG
WITH MVFR CEILINGS AND VISIBILITIES. ANOTHER BAND OF PRECIP WILL
PUSH EAST FROM NE LATE IN THE PERIOD...WITH RA CHANGING TO SN AT
MOST SITES BY 18Z. WILL SEE VISIBILITIES AND CEILINGS REDUCED TO
IFR OR LOWER AT TIMES AT SITES. WINDS WILL INCREASE BEYOND
18Z...WHICH WILL LEAD TO AREAS OF BLSN WHICH COULD CONTINUE TO
CAUSE IFR OR LOWER VISIBILITIES AND CEILINGS.

&&

.HYDROLOGY...
ISSUED AT 259 PM CST WED FEB 19 2014

HYDRO-RELATED CONCERNS INVOLVE TWO ASPECTS...FIRST THE POTENTIAL FOR
FLASH FLOODING...AND SECOND...THE POTENTIAL FOR RIVER ICE JAMS AND
ASSOCIATED FLOODING. THE GEOGRAPHIC AREA OF CONCERN IS SOUTH OF I-80
AND EAST OF I-35 FOR BOTH ASPECTS.

THE COMBINATION OF SEASONALLY MODERATE TO HEAVY RAINFALL ON THURSDAY
ALONG WITH FROZEN GROUND MAY LEAD TO SIGNFICANT RUNOFF IN SOME
LOCATIONS. THUS LOCALIZED FLOODING MAY RESULT. THE TIMING WOULD BE
DURING THE DAY ON THURSDAY. AT THIS TIME THE CONFIDENCE IN FLASH
FLOODING IS NOT HIGH ENOUGH TO WARRANT A FLASH FLOOD WATCH AT THIS
TIME. NEVERTHELESS...SOME ISOLATED LOCATIONS MAY SEE PONDING OF
WATER.

THE SECOND ASPECT OF CONCERN IS POTENTIAL ICE JAM ACTIVITY AND
POSSIBLE MINOR FLOODING ON STREAMS...AGAIN SOUTH OF I-80 AND EAST OF
I-35. THE TIMING WOULD BE FROM MIDDAY THURSDAY INTO THURSDAY NIGHT.
WE ALREADY SAW ICE JAM ACTIVITY IN THIS AREA ON WEDNESDAY
EVENING...ALTHOUGH STREAM LEVELS REMAINED WELL WITHIN BANK. RUNOFF
FROM THURSDAY/S RAINFALL WILL PUSH THE STREAM LEVELS HIGHER...WITH
ICE JAMS POSSIBLY RESULTING IN LOCALLY HIGHER LEVELS. AS WITH THE
FLASH FLOODING POTENTIAL...THE CONFIDENCE IN RIVER FLOODING
OCCURRING IS NOT HIGH ENOUGH TO WARRANT A FLOOD WATCH AT THIS TIME.
NEVERTHELESS...SOME LOCAL AREAS MAY SEE SIGNIFICANT WITHIN-BANK
RISES AS WELL AS LOCALIZED FLOODING. IF FLOODING DID OCCUR...THE
WORST CASE SCENARIO WOULD INVOLVE MINOR FLOODING.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
WINTER STORM WARNING FROM 9 AM THURSDAY TO 6 AM CST FRIDAY FOR
CARROLL-CRAWFORD-DALLAS-GUTHRIE-JASPER-POLK-SAC-TAMA.

WINTER WEATHER ADVISORY FROM 9 AM THURSDAY TO 6 AM CST FRIDAY
FOR ADAIR-AUDUBON-CASS-MADISON-MARION-POWESHIEK-WARREN.

BLIZZARD WARNING FROM 9 AM THURSDAY TO 6 AM CST FRIDAY FOR BLACK
HAWK-BOONE-BREMER-BUTLER-CALHOUN-CERRO GORDO-EMMET-FRANKLIN-
GREENE-GRUNDY-HAMILTON-HANCOCK-HARDIN-HUMBOLDT-KOSSUTH-MARSHALL-
PALO ALTO-POCAHONTAS-STORY-WEBSTER-WINNEBAGO-WORTH-WRIGHT.

&&

SHORT TERM...AWB
LONG TERM...MS FEB 14
AVIATION...AWB
HYDROLOGY...ZOGG
Hazardous weather outlook, Feb 19, 7:04 AM CST, 8 hours 39 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
704 AM CST WED FEB 19 2014

IAZ004>007-015>017-023>028-034>039-046>049-201315-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-CALHOUN-WEBSTER-
HAMILTON-HARDIN-GRUNDY-BLACK HAWK-GREENE-BOONE-STORY-MARSHALL-
704 AM CST WED FEB 19 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TODAY AND TONIGHT

A WINTRY MIX OF PRECIPITATION WILL BEGIN BY LATE TONIGHT WITH
HAZARDOUS TRAVEL LIKELY.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A BLIZZARD WARNING IS IN EFFECT FOR THE AREA THURSDAY AND
THURSDAY NIGHT. PLEASE REFER TO THE NATIONAL WEATHER SERVICE
WEBSITE AT WEATHER.GOV/DESMOINES FOR FURTHER DETAILS.

.SPOTTER INFORMATION STATEMENT...
SPOTTER REPORTS FOR SNOWFALL AMOUNTS AND VISIBILITIES WOULD BE
APPRECIATED FOR THURSDAY AND THURSDAY NIGHT.

IAZ070-075-081>086-092>097-201315-
CASS-MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-
RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS-
704 AM CST WED FEB 19 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TODAY AND TONIGHT

ISOLATED NON SEVERE THUNDERSTORMS ARE POSSIBLE TONIGHT AFTER
MIDNIGHT. ICE JAMS ARE POSSIBLE ALONG AREA STREAMS AND RIVERS DUE
TO THE SNOW MELT AND WARMER TEMPERATURES TODAY INTO TONIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A SIGNIFICANT WINTER SYSTEM WILL IMPACT THE AREA THURSDAY AND
THURSDAY NIGHT. ACCUMULATING SNOWFALL FOLLOWED BY STRONG NORTHWEST
WINDS WITH GUSTS IN EXCESS OF 45 MPH...MAY PRODUCE A PERIOD OF
SIGNIFICANT BLOWING SNOW ESPECIALLY WEST OF INTERSTATE 35.

.SPOTTER INFORMATION STATEMENT...
SPOTTER REPORTS FOR SNOWFALL AMOUNTS AND VISIBILITIES WOULD BE
APPRECIATED FOR THURSDAY AND THURSDAY NIGHT.

IAZ033-044-045-050-057>062-071>074-201315-
SAC-CRAWFORD-CARROLL-TAMA-AUDUBON-GUTHRIE-DALLAS-POLK-JASPER-
POWESHIEK-ADAIR-MADISON-WARREN-MARION-
704 AM CST WED FEB 19 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TODAY AND TONIGHT

ISOLATED NON SEVERE THUNDERSTORMS ARE POSSIBLE VERY LATE TONIGHT.
ICE JAMS ARE POSSIBLE ALONG AREA STREAMS AND RIVERS DUE TO THE SNOW
MELT AND WARMER TEMPERATURES.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A BLIZZARD WATCH IS IN EFFECT FOR THE AREA THURSDAY AND THURSDAY
NIGHT. PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT
WEATHER.GOV/DESMOINES FOR FURTHER DETAILS.

.SPOTTER INFORMATION STATEMENT...
SPOTTER REPORTS FOR SNOWFALL AMOUNTS AND VISIBILITIES WOULD BE
APPRECIATED FOR THURSDAY AND THURSDAY NIGHT.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 19, 4:54 AM CSTBlizzard WarningDMXAdair, Audubon, Black Hawk, Boone, Bremer, Butler and 28 more49 hr
Feb 19, 3:43 PM CSTWinter Weather AdvisoryDMXAdair, Adams, Audubon, Black Hawk, Boone, Carroll and 24 more38 hr

Nearby

Winter Storm Warnings in Iowa, 2014Every winter storm warning in 2014

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.