HAZARDOUS WEATHER OUTLOOK
Issue Date: 441 PM CST WED DEC 23 2009
Expiration: 600 AM CST THU DEC 24 2009

Expires:200912241200;;
FLUS43 KDMX 232221 CCA
HWODMX
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
416 PM CST WED DEC 23 2009
IAZ004>007-015>017-023>028-033>036-044>046-057-058-241200-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-CRAWFORD-CARROLL-GREENE-AUDUBON-GUTHRIE-
416 PM CST WED DEC 23 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.
.DAY ONE...THIS AFTERNOON AND TONIGHT
A WINTER STORM WARNING IS IN EFFECT FOR THE AREA THROUGH FRIDAY
NIGHT. PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT
WEATHER.GOV/DESMOINES FOR FURTHER DETAILS.
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
A WINTER STORM WARNING IS IN EFFECT FOR THE AREA THROUGH FRIDAY
NIGHT. PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT
WEATHER.GOV/DESMOINES FOR FURTHER DETAILS. SIGNIFICANT SNOWFALL
ACCUMULATIONS ARE ANTICIPATED WITH THIS STORM...ALONG WITH STRONG
NORTHWEST WINDS REDUCING VISIBILITY AND POTENTIALLY CAUSING NEAR
BLIZZARD CONDITIONS AT TIMES.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED...BUT ANY SNOWFALL AND ICE
ACCUMULATION REPORTS ARE APPRECIATED AND ENCOURAGED.
$$

WINTER STORM WARNING
Issue Date: 507 AM CST WED DEC 23 2009
Expiration: 1200 AM CST SAT DEC 26 2009

...ICY CONDITIONS TONIGHT...FOLLOWED BY A MAJOR WINTER STORM
WEDNESDAY THROUGH FRIDAY...
.ICY CONDITIONS WILL AFFECT OUR REGION TONIGHT INTO WEDNESDAY.
THEN...AN APPROACHING LOW PRESSURE SYSTEM WILL BRING RAIN AND A
MIX OF WINTRY WEATHER STATEWIDE THROUGH FRIDAY. HEAVY
PRECIPITATION IS EXPECTED AT TIMES FROM WEDNESDAY ONWARD...
FOLLOWED BY STRONG WINDS ON THURSDAY AND FRIDAY.
IAZ004>007-015>017-023>028-033>036-044>046-231600-
/O.CAN.KDMX.ZR.Y.0001.000000T0000Z-091223T1800Z/
/O.UPG.KDMX.WS.A.0007.091223T1800Z-091226T0000Z/
/O.NEW.KDMX.WW.Y.0026.091223T1107Z-091223T2100Z/
/O.NEW.KDMX.WS.W.0008.091223T2100Z-091226T0600Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-CRAWFORD-CARROLL-GREENE-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...POCAHONTAS...
HUMBOLDT...CLARION...HAMPTON...ALLISON...WAVERLY...SAC CITY...
ROCKWELL CITY...FORT DODGE...WEBSTER CITY...DENISON...CARROLL...
JEFFERSON
507 AM CST WED DEC 23 2009
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...
...WINTER STORM WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO
MIDNIGHT CST FRIDAY NIGHT...
...FREEZING RAIN ADVISORY IS CANCELLED...
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
STORM WARNING FOR FREEZING RAIN...SLEET AND SNOW...WHICH IS IN
EFFECT FROM 3 PM THIS AFTERNOON TO MIDNIGHT CST FRIDAY NIGHT. A
WINTER WEATHER ADVISORY HAS ALSO BEEN ISSUED. THIS WINTER WEATHER
ADVISORY FOR FREEZING RAIN OR SNOW IS IN EFFECT UNTIL 3 PM CST
THIS AFTERNOON. THE FREEZING RAIN ADVISORY HAS BEEN CANCELED. THE
WINTER STORM WATCH IS NO LONGER IN EFFECT.
...WINTER WEATHER ADVISORY...
* SHORT TERM TRENDS...AN AREA OF SHOWERS...AND EVEN A FEW
THUNDERSTORMS...OVER KANSAS AND MISSOURI WILL ADVANCE NORTHWARD
INTO SOUTHERN IOWA THIS MORNING. AS IT DOES THE PRECIPITATION
WILL SWITCH TO A MORE WINTER VARIETY BECOMING FREEZING RAIN AND
THEN EVENTUALLY SLEET OR SNOW BY THE TIME IT HITS NORTHERN IOWA
TOWARD MIDDAY. ONE TO TWO TENTHS OF ICE MAY ACCUMULATE BY
DAYBREAK THURSDAY. ONE TO FIVE INCHES OF SNOW IS ALSO EXPECTED
WITH THE HIGHEST AMOUNTS IN THAT RANGE TOWARD THE MINNESOTA
BORDER.
* IMPACTS...TRAVEL WILL BE HAZARDOUS WITH SNOW AND ICE COVERED
ROADS BECOMING MORE PREVALENT THROUGHOUT THE DAY.
...WINTER STORM WARNING...
* LONG TERM TRENDS...THE WINTRY MIX AND SNOW AND SLEET WILL
CONTINUE LATE THIS AFTERNOON AND TONIGHT BEFORE EVENTUALLY
TRANSITIONING TO ALL SNOW LATE THURSDAY OR EARLY FRIDAY. THIS
CHANGE OVER TO SNOW WILL ALSO BE COINCIDENT WITH INCREASING
NORTH TO NORTHWEST WINDS PRODUCING GREATLY REDUCED VISIBILITIES
AND NEAR BLIZZARD CONDITIONS.
* TOTAL SNOW AND ICE ACCUMULATIONS...ONE TO FOUR TENTHS OF AN INCH
OF ICE MAY ACCUMULATE WITH THE HIGHEST AMOUNTS ALONG THE HIGHWAY
20 AND HIGHWAY 30 CORRIDORS BEFORE THE CHANGE TO ALL SNOW. BY
THE TIME THE SNOW ENDS SATURDAY...STORM TOTAL ACCUMULATIONS
SHOULD RANGE FROM FIVE TO TEN INCHES FROM ATLANTIC...TO WEBSTER
CITY...TO HAMPTON...WITH 12 TO 17 INCHES FROM DENISON TO MASON
CITY. THE HIGHER AMOUNTS OF THAT RANGE SHOULD OCCUR FARTHER
NORTHWEST TOWARD ESTHERVILLE.
* WINDS...BRISK EAST WINDS OF 15 TO 25 MPH WILL BE COMMON THROUGH
THURSDAY...HOWEVER BY FRIDAY...WINDS WILL BECOME NORTHWEST AT
25 TO 35 MPH WITH HIGHER GUSTS.
* VISIBILITY...DURING THE PERIODS OF HEAVY SNOW THURSDAY INTO
FRIDAY...VISIBILITIES WILL GENERALLY BE LESS THAN ONE MILE AND
EVEN DOWN TO A QUARTER MILE DURING THE HEAVIEST SNOWS. WHITE OUT
NEAR BLIZZARD CONDITIONS MAY DEVELOP OVER NORTHWEST IOWA.
* IMPACTS...TRAVEL WILL BECOME INCREASINGLY DIFFICULT IN THE
WARNING AREA OVER THE NEXT SEVERAL DAYS AND MAY BE NEARLY
IMPOSSIBLE BY FRIDAY AS SNOW ACCUMULATES AND WINDS INCREASE.
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 VISIBILITY...AND USE CAUTION WHILE
DRIVING.
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.
$$

WINTER STORM WATCH
Issue Date: 344 PM CST MON DEC 21 2009
Expiration: 600 PM CST FRI DEC 25 2009

...MAJOR WINTER STORMS SET TO IMPACT PORTIONS OF IOWA WEDNESDAY
THROUGH FRIDAY...
.LOW PRESSURE WILL MOVE THROUGH IOWA TONIGHT BRINGING SNOW ACROSS
THE NORTHERN HALF OF THE STATE. A MUCH MORE INTENSE SYSTEM IS
FORECAST TO LIFT INTO THE MIDWEST ON WEDNESDAY AND MEANDER SLOWLY
NORTH INTO THURSDAY AND FRIDAY BRINGING SEVERE WINTER WEATHER
CONDITIONS TO PORTIONS OF CENTRAL IOWA.
IAZ004>007-015>017-026>028-220500-
/O.NEW.KDMX.WW.Y.0025.091222T0000Z-091222T1200Z/
/O.NEW.KDMX.WS.A.0007.091223T1200Z-091226T0000Z/
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
FRANKLIN-BUTLER-BREMER-
INCLUDING THE CITIES OF...ESTHERVILLE...ALGONA...FOREST CITY...
NORTHWOOD...EMMETSBURG...GARNER...MASON CITY...HAMPTON...
ALLISON...WAVERLY
344 PM CST MON DEC 21 2009
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM CST TUESDAY...
...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
FRIDAY AFTERNOON...
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT UNTIL 6 AM CST
TUESDAY. A WINTER STORM WATCH HAS ALSO BEEN ISSUED. THIS WINTER
STORM WATCH IS IN EFFECT FROM WEDNESDAY MORNING THROUGH FRIDAY
AFTERNOON.
WINTER WEATHER ADVISORY...
* SHORT TERM TRENDS...EXPECT PERIODS OF LIGHT SNOW TO INTENSIFY
THIS EVENING. SNOWFALL RATES OF ONE HALF INCH PER HOUR CAN BE
EXPECTED BY MID EVENING AS SNOW EXPANDS ACROSS NORTHERN IOWA.
* TIMING...6 PM THIS EVENING TO 6 AM ON TUESDAY MORNING. HEAVIEST
SNOWS ARE EXPECTED BETWEEN 9 PM AND 4 AM.
* STORM TOTAL ACCUMULATIONS...2 TO 5 INCHES WITH HEAVIEST AMOUNTS
ALONG THE MINNESOTA BORDER.
* VISIBILITIES...GENERALLY UNDER 2 MILES WITH THE HEAVIEST SNOW
PRODUCING ONE HALF MILE TO OCCASIONAL ONE QUARTER MILE
VISIBILITIES.
WINTER STORM WATCH...
* TIMING...WEDNESDAY MORNING THROUGH LATE FRIDAY AFTERNOON.
* STORM TOTAL ICE ACCUMULATIONS...UP TO ONE QUARTER INCH FROM THE
HIGHWAY 30 TO HIGHWAY 20 CORRIDORS WITH LESSER AMOUNTS FARTHER
NORTH.
* STORM TOTAL SNOW ACCUMULATIONS...4 TO 6 INCHES ALONG THE
SOUTHERN EDGE OF THE WATCH AREA UP TO OVER A FOOT ALONG AND WEST
OF A CARROLL TO MASON CITY LINE.
* WINDS...EASTERLY WINDS AT 10 TO 20 MPH ON WEDNESDAY INTO
THURSDAY BECOMING NORTHERLY AT 20 TO 30 MPH WITH HIGHER GUSTS ON
FRIDAY.
* VISIBILITY...SNOW AREAS WILL SEE VISIBILITIES GENERALLY LESS
THAN ONE MILE FOR THE DURATION OF THE STORM WITH FREQUENT
VISIBILITIES OF ONE HALF TO ONE QUARTER OF A MILE IN THE HEAVIER
SNOWS. WITH INCREASING WINDS THURSDAY NIGHT AND FRIDAY...BLOWING
SNOW AND REDUCED VISIBILITIES ARE EXPECTED IN THE WATCH AREA.
* IMPACTS...TRAVEL WILL BECOME INCREASINGLY DIFFICULT IN THE WATCH
AREA ON WEDNESDAY AND CONTINUE TO BE DIFFICULT INTO THURSDAY AND
FRIDAY AS SNOW ACCUMULATES AND WINDS INCREASE. IN THE HEAVIEST
SNOW AREAS...TRAVEL MAY BECOME NEARLY IMPOSSIBLE DUE TO BLOWING
AND DRIFTING SNOW THURSDAY NIGHT INTO FRIDAY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND
LIMITED VISIBILITY...AND USE CAUTION WHILE DRIVING.
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.
$$