UPDATE: URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE DES MOINES IA
215 PM CDT SUN MAR 10 2013
...SLOW MOVING WINTER STORM AFFECTING CENTRAL IOWA TODAY AND TONIGHT...
A SLOW MOVING WINTER STORM IS AFFECTING THE REGION THIS AFTERNOON.
THE STORM WILL BRING MODERATE TO LOCALLY HEAVY SNOWFALL TO MUCH OF
CENTRAL AND NORTHEAST IOWA BY MONDAY MORNING. IN ADDITION SOME
FREEZING RAIN HAS ALSO DEVELOPED DURING THE TRANSITION PERIOD.
NORTH TO NORTHWEST WINDS WILL ALSO INCREASE THROUGH THE DAY AND
TONIGHT...CAUSING HAZARDOUS DRIVING CONDITIONS DUE TO LOW VISIBILITY
AND SNOW COVERED ROADS... ESPECIALLY LATER THIS AFTERNOON THROUGH
MONDAY MORNING.
FRANKLIN-BUTLER-BREMER-HARDIN-GRUNDY-BLACK HAWK-STORY-MARSHALL-
TAMA-DALLAS-POLK-JASPER-
INCLUDING THE CITIES OF...HAMPTON...ALLISON...WAVERLY...ELDORA...
GRUNDY CENTER...WATERLOO...AMES...MARSHALLTOWN...TOLEDO...ADEL...
DES MOINES...NEWTON
215 PM CDT SUN MAR 10 2013
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 7 AM CDT MONDAY...
* TIMING...LIGHT RAIN...POSSIBLY MIXED WITH LIGHT FREEZING RAIN AT
TIMES...WILL SPREAD ACROSS THE AREA BEFORE SWITCHING OVER TO ALL
SNOW THIS AFTERNOON. MODERATE TO LOCALLY HEAVY SNOW IS POSSIBLE
FROM THROUGH TONIGHT. THE SNOW WILL TAPER OFF BY MONDAY MORNING.
A PERIOD OF FREEZING RAIN IS ALSO POSSIBLE DURING THE TRANSITION
TODAY.
* STORM TOTAL SNOW/ICE ACCUMULATIONS...TOTAL SNOWFALL AMOUNTS OF 5
TO 9 INCHES WITH LOCALLY HIGHER AMOUNTS NORTH OF HIGHWAY 20 CAN
BE EXPECTED BY MONDAY MORNING. A LIGHT GLAZING OF ICE IS ALSO
POSSIBLE THIS AFTERNOON ALONG AND NORTH HIGHWAY 30 AS THE
PRECIPITATION TRANSITIONS TO SNOW.
* WINDS/VISIBILITY...NORTHWEST TO NORTH WINDS OF 20 TO 30 MPH WITH
GUSTS TO NEAR 40 MPH ARE EXPECTED FROM THIS AFTERNOON INTO
TONIGHT...RESULTING IN BLOWING SNOW AND REDUCED VISIBILITY OF
LESS THAN A HALF MILE AT TIMES. STRONG WINDS AND SOME BLOWING
SNOW WILL REMAIN THROUGH NOON MONDAY.
* IMPACTS...TRAVEL CONDITIONS ARE LIKELY TO RAPIDLY DETERIORATE
THIS AFTERNOON AND BECOME VERY HAZARDOUS BY TONIGHT. ROADS MAY
BECOME ICY WITH A PERIOD OF FREEZING RAIN AND AS INITIALLY THE
FIRST SNOW MELTS AND REFREEZES. AS SNOW ACCUMULATES ROADS WILL
BECOME SNOW COVERED AND SLIPPERY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
URGENT - WINTER WEATHER MESSAGE
SMALL STREAM FLOODING
NATIONAL WEATHER SERVICE DES MOINES IA
317 PM CST SAT MAR 9 2013
...EARLY SPRING SNOW TO AFFECT MUCH OF IOWA SUNDAY INTO MONDAY...
.A STRONG AREA OF LOW PRESSURE IS FORECAST TO PUSH ACROSS THE
CENTRAL PLAINS AND THE MIDWEST SUNDAY INTO MONDAY. THIS STORM WILL
BRING MODERATE TO LOCALLY HEAVY SNOW TO CENTRAL IOWA BY SUNDAY
AFTERNOON AND INTO THE EARLY MONDAY MORNING. STRONG NORTH TO
NORTHWEST WINDS ARE EXPECTED TO OCCUR DURING THE HEAVIEST SNOWFALL
PERIOD AND WILL CAUSE HAZARDOUS DRIVING CONDITIONS DUE TO LOW
VISIBILITY AND SNOW COVERED ROADS. THE SNOW IS EXPECTED TO TAPER
OFF BEFORE SUNRISE MONDAY MORNING.
TAMA-WORTH-HANCOCK-CERRO GORDO-WRIGHT-FRANKLIN-BUTLER-BREMER-WEBSTER-
HAMILTON-HARDIN-GRUNDY-BLACK HAWK-GREENE-BOONE-STORY-MARSHALL-
GUTHRIE-DALLAS-POLK-JASPER-POWESHIEK-ADAIR-MADISON-WARREN-
MARION-UNION-CLARKE-
INCLUDING THE CITIES OF...TOLEDO...NORTHWOOD...GARNER...MASON CITY...
CLARION...HAMPTON...ALLISON...WAVERLY...FORT DODGE...
WEBSTER CITY...ELDORA...GRUNDY CENTER...WATERLOO...JEFFERSON...
BOONE...AMES...MARSHALLTOWN...GUTHRIE CENTER...ADEL...
DES MOINES...NEWTON...GRINNELL...GREENFIELD...WINTERSET...
INDIANOLA...KNOXVILLE...CRESTON...OSCEOLA
317 PM CST SAT MAR 9 2013
...MINOR STREAM FLOODING OCCURRING...
RUNOFF DUE TO THE COMBINATION OF RAINFALL...SNOWMELT AND FROZEN
GROUND WILL LEAD TO MINOR FLOODING ALONG SOME CREEKS AND SMALLER
STREAMS IN PORTIONS OF TAMA...POWESHIEK...MAHASKA AND NORTHEASTERN
WAPELLO COUNTIES. IN ADDITION...SOME RURAL ROADS HAVE EXPERIENCED
MINOR FLOODING IN THEIR LOWER...FLOOD PRONE AREAS NOT DUE TO STREAM
FLOODING. ADDITIONAL RAINFALL TONIGHT WILL HELP CONTINUE THE
ELEVATED STREAM LEVELS.
COUNTY HIGHWAY DEPARTMENTS AND LAW ENFORCEMENT REPORT THAT SOME
RURAL ROADS HAVE ALREADY BEEN CLOSED DUE TO THE FLOODING.
BE ALERT FOR FLOODED AREAS ALONG ROADS TONIGHT...ESPECIALLY ALONG
RURAL ROADS IN LOWER SPOTS. IF YOU DO ENCOUNTER A CLOSED OR FLOODED
ROADWAY...TURN AROUND AND TAKE AN ALTERNATE ROUTE.
...WINTER STORM WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH
MONDAY MORNING...
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM SUNDAY AFTERNOON THROUGH
MONDAY MORNING.
* TIMING TRENDS...A MIXTURE OF RAIN...SLEET...AND POSSIBLY
FREEZING RAIN IS FORECAST DURING THE MORNING HOURS SUNDAY BEFORE
SWITCHING OVER TO ALL SNOW SUNDAY AFTERNOON. MODERATE TO LOCALLY
HEAVY SNOW IS FORECAST SUNDAY AFTERNOON THROUGH SUNDAY
NIGHT...WITH ADDITIONAL LIGHT SNOW AMOUNTS AFTER MIDNIGHT
SUNDAY NIGHT INTO MONDAY MORNING.
* STORM TOTAL SNOW/ICE ACCUMULATIONS...SNOWFALL AMOUNTS OF 4 TO 8
INCHES WITH LOCALLY HIGHER AMOUNTS CAN BE EXPECTED BY MONDAY
MORNING. UP TO A TENTH OF AN INCH OF SLEET AND A LIGHT GLAZE OF
FREEZING RAIN IS POSSIBLE BEFORE SWITCHING OVER TO ALL SNOW
SUNDAY AFTERNOON.
* WINDS/VISIBILITY...NORTH TO NORTHWEST WINDS OF 20 TO 30 MPH WITH
HIGHER GUSTS POSSIBLY DURING THE AFTERNOON SUNDAY AND INTO SUNDAY
EVENING. BLOWING SNOW AND REDUCED VISIBILITY OF LESS THAN A HALF
MILE AT TIMES CAN BE EXPECTED.
* IMPACTS...TRAVEL CONDITIONS ARE LIKELY TO RAPIDLY DETERIORATE
SUNDAY AFTERNOON AND BECOME VERY HAZARDOUS SUNDAY NIGHT INTO
MONDAY MORNING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
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Hazardous Weather Outlook
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
716 PM CST SAT MAR 9 2013
IAZ025>028-035>039-046>050-058>062-071>074-082-083-110130-
WRIGHT-FRANKLIN-BUTLER-BREMER-WEBSTER-HAMILTON-HARDIN-GRUNDY-
BLACK HAWK-GREENE-BOONE-STORY-MARSHALL-TAMA-GUTHRIE-DALLAS-POLK-
JASPER-POWESHIEK-ADAIR-MADISON-WARREN-MARION-UNION-CLARKE-
716 PM CST SAT MAR 9 2013
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.
.DAY ONE...TONIGHT
SMALL STREAMS AND CREEKS MAY EXPERIENCE BANK FULL LEVELS DUE TO
THE RECENT RAIN AND EXPECTED RAIN TONIGHT.
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY
A WINTER STORM WATCH IS IN EFFECT FOR THE AREA. PLEASE REFER TO
THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES FOR
FURTHER DETAILS.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED...BUT SNOWFALL REPORTS AND
RIVE LEVEL REPORTS ARE ENCOURAGED AND APPRECIATED.
$$
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Special Weather Statement
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
619 PM CST SAT MAR 9 2013
IAZ050-062-075-086-100315-
MAHASKA-POWESHIEK-TAMA-WAPELLO-
619 PM CST SAT MAR 9 2013
...MINOR STREAM FLOODING OCCURRING...
RUNOFF DUE TO THE COMBINATION OF RAINFALL...SNOWMELT AND FROZEN
GROUND WILL LEAD TO MINOR FLOODING ALONG SOME CREEKS AND SMALLER
STREAMS IN PORTIONS OF TAMA...POWESHIEK...MAHASKA AND NORTHEASTERN
WAPELLO COUNTIES. IN ADDITION...SOME RURAL ROADS HAVE EXPERIENCED
MINOR FLOODING IN THEIR LOWER...FLOOD PRONE AREAS NOT DUE TO STREAM
FLOODING. ADDITIONAL RAINFALL TONIGHT WILL HELP CONTINUE THE
ELEVATED STREAM LEVELS.
COUNTY HIGHWAY DEPARTMENTS AND LAW ENFORCEMENT REPORT THAT SOME
RURAL ROADS HAVE ALREADY BEEN CLOSED DUE TO THE FLOODING.
BE ALERT FOR FLOODED AREAS ALONG ROADS TONIGHT...ESPECIALLY ALONG
RURAL ROADS IN LOWER SPOTS. IF YOU DO ENCOUNTER A CLOSED OR FLOODED
ROADWAY...TURN AROUND AND TAKE AN ALTERNATE ROUTE.