HAZARDOUS WEATHER OUTLOOK
Issue Date: 501 PM CST THU DEC 24 2009
Expiration: 445 PM CST FRI DEC 25 2009

Expires:200912252245;;
FLUS43 KDMX 242244
HWODMX
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
444 PM CST THU DEC 24 2009
IAZ062-074-075-084>086-095>097-252245-
POWESHIEK-MARION-MAHASKA-LUCAS-MONROE-WAPELLO-WAYNE-APPANOOSE-DAVIS-
444 PM CST THU DEC 24 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.
.DAY ONE...TONIGHT
RAIN WILL CONTINUE...POSSIBLY MIXED WITH SLEET AT TIMES OVERNIGHT.
COLDER AIR IS FORECAST TO FILTER INTO SOUTHEAST IOWA OVERNIGHT...
CAUSING THE DRIZZLE AND RAIN TO SWITCH OVER TO SLEET AND SNOW.
.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
A WINTER WEATHER ADVISORY IS IN EFFECT FOR THE AREA THROUGH SATURDAY.
PLEASE REFER TO THE NATIONAL WEATHER SERVICE WEBSITE AT
WEATHER.GOV/DESMOINES FOR FURTHER DETAILS.
LIGHT TO MODERATE SNOW ACCUMULATIONS WILL OCCUR FROM LATE MORNING
THROUGH CHRISTMAS DAY AND INTO SATURDAY MORNING. STRONG WINDS ARE
LIKELY LATER IN THE DAY FRIDAY INTO FRIDAY NIGHT...POSSIBLY
PRODUCING BLOWING AND DRIFTING SNOW ACROSS THE AREA.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED...BUY SNOWFALL AND ICE
ACCUMULATION REPORTS ARE APPRECIATED AND ENCOURAGED.
$$

WINTER WEATHER ADVISORY
Issue Date: 345 PM CST THU DEC 24 2009
Expiration: 600 AM CST SAT DEC 26 2009

...POTENTIALLY CRIPPLING WINTER STORM THROUGH EARLY SATURDAY...
.THE WINTRY MIX OF PRECIPITATION IS BEGINNING TO TRANSITION TO ALL
SNOW OVER NORTHWEST AND WESTERN SECTIONS OF IOWA. THE TRANSITION
WILL BE DELAYED OVER SOME OF THE EAST AND SOUTHEAST COUNTIES UNTIL
FRIDAY MORNING. THE MOST INTENSE PERIODS OF SNOW ARE EXPECTED
TONIGHT INTO FRIDAY WITH ACCUMULATING SNOWFALL LINGERING INTO
SATURDAY. IN ADDITION...INCREASING NORTHWEST WINDS ARE EXPECTED
TONIGHT INTO FRIDAY WHICH WOULD CAUSE CONSIDERABLE BLOWING AND
DRIFTING OF SNOW WITH DANGEROUS TRAVEL CONDITIONS OVER MUCH OF
WEST AND CENTRAL IOWA.
IAZ062-074-075-084>086-095>097-250545-
/O.UPG.KDMX.WS.A.0008.091225T0000Z-091226T1200Z/
/O.NEW.KDMX.WW.Y.0027.091225T1200Z-091226T1200Z/
POWESHIEK-MARION-MAHASKA-LUCAS-MONROE-WAPELLO-WAYNE-APPANOOSE-
DAVIS-
INCLUDING THE CITIES OF...GRINNELL...KNOXVILLE...OSKALOOSA...
CHARITON...ALBIA...OTTUMWA...CORYDON...CENTERVILLE...BLOOMFIELD
345 PM CST THU DEC 24 2009
...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM FRIDAY TO 6 AM CST
SATURDAY...
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER WEATHER
ADVISORY FOR A SNOW AND SLEET AND BRIEF FREEZING RAIN...WHICH IS
IN EFFECT FROM 6 AM FRIDAY TO 6 AM CST SATURDAY. THE WINTER STORM
WATCH IS NO LONGER IN EFFECT.
* LONG TERM TRENDS...RAIN WILL TRANSITION TO A WINTRY MIX BY FRIDAY
MORNING AND THEN TO ALL SNOW BY MIDDAY. SNOW WILL THEN BE LIKELY
THROUGH EARLY SATURDAY. THE SNOW MAY BE HEAVY AT TIMES.
* STORM TOTAL SNOW ACCUMULATIONS...THREE TO SIX INCHES OF SNOW IS
EXPECTED BY SATURDAY.
* WINDS AND VISIBILITY...WINDS ARE EXPECTED TO INCREASE ON FRIDAY
BEFORE FROM THE SOUTHWEST AT 15 TO 25 MPH INTO FRIDAY NIGHT.
VISIBILITY REDUCTIONS TO LESS THAN ONE QUARTER MILE ARE POSSIBLE
AT TIMES DURING THE LATE DAY HOURS FRIDAY AND FRIDAY NIGHT.
* IMPACTS...OCCASIONAL DIFFICULT TRAVEL CONDITIONS ARE EXPECTED
FRIDAY AFTERNOON THROUGH FRIDAY NIGHT.
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.
$$

WINTER STORM WATCH
Issue Date: 411 AM CST THU DEC 24 2009
Expiration: 600 AM CST SAT DEC 26 2009

...POTENTIALLY CRIPPLING WINTER STORM TODAY THROUGH FRIDAY NIGHT...
.THE WINTRY MIX OF PRECIPITATION WILL GRADUALLY TRANSITION TO ALL
SNOW FROM NORTHWEST TO SOUTHEAST TODAY. THE PRECIPITATION THIS
MORNING WILL GENERALLY BE LIGHT BEFORE ANOTHER WAVE OF MOISTURE
ARRIVES FROM SOUTHERN PLAINS DURING THE AFTERNOON HOURS. THE MOST
INTENSE PERIODS OF SNOW ARE EXPECTED TONIGHT INTO FRIDAY THOUGH
ACCUMULATING SNOWFALL MAY LINGER INTO SATURDAY. IN
ADDITION...INCREASING NORTHWEST WINDS ARE EXPECTED TONIGHT INTO
FRIDAY WHICH WOULD CAUSE CONSIDERABLE BLOWING AND DRIFTING OF SNOW.
IAZ062-074-075-084>086-095>097-241815-
/O.NEW.KDMX.WS.A.0008.091225T0000Z-091226T1200Z/
POWESHIEK-MARION-MAHASKA-LUCAS-MONROE-WAPELLO-WAYNE-APPANOOSE-
DAVIS-
INCLUDING THE CITIES OF...GRINNELL...KNOXVILLE...OSKALOOSA...
CHARITON...ALBIA...OTTUMWA...CORYDON...CENTERVILLE...BLOOMFIELD
411 AM CST THU DEC 24 2009
...WINTER STORM WATCH IN EFFECT FROM THIS EVENING THROUGH LATE
FRIDAY NIGHT...
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM THIS EVENING THROUGH LATE
FRIDAY NIGHT.
* LONG TERM TRENDS...PRECIPITATION WILL TRANSITION TO A WINTRY MIX
BY MID TO LATE AFTERNOON THEN TO ALL SNOW OVERNIGHT. SNOW WILL
THEN BE LIKELY THROUGH EARLY SATURDAY. THE SNOW WILL BE HEAVY AT
TIMES ESPECIALLY TONIGHT INTO EARLY FRIDAY.
* STORM TOTAL SNOW ACCUMULATIONS...FOUR TO EIGHT INCHES OF SNOW IS
EXPECTED BY SATURDAY.
* WINDS AND VISIBILITY...BREEZY NORTHEAST WINDS TONIGHT WILL CAUSE
SOME BLOWING AND DRIFTING TONIGHT. A LULL IN THE WINDS ARE
EXPECTED MUCH OF FRIDAY BEFORE INCREASING FROM THE SOUTHWEST AT
15 TO 25 MPH INTO FRIDAY NIGHT. VISIBILITY REDUCTIONS TO LESS
THAN ONE QUARTER MILE ARE LIKELY.
* IMPACTS...DIFFICULT TRAVEL CONDITIONS ARE EXPECTED TONIGHT
THROUGH FRIDAY NIGHT.
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.
$$
DONAVON

FLOOD WATCH
Issue Date: 358 PM CST WED DEC 23 2009
Expiration: 600 AM CST FRI DEC 25 2009

...FLOODING RESULTING FROM SIGNIFICANT RAINFALL...ALONG WITH
SNOW MELT AND ICE JAMS...POSSIBLE THURSDAY INTO THURSDAY NIGHT...
.A STRONG STORM SYSTEM WILL BRING THE POSSIBILITY OF FLOODING.
PRECIPITATION TYPE WILL BE A MAJOR DRIVING FORCE IN THE FLOODING
THREAT. MODERATE TO HEAVY RAIN...ALONG WITH POSSIBLE
THUNDERSTORMS...ARE POSSIBLE. RAINFALL AMOUNTS OF A HALF INCH TO
TWO INCHES ARE EXPECTED THROUGH THURSDAY NIGHT.
IAZ039-049-050-060>062-073>075-083>086-094>097-240600-
/O.NEW.KDMX.FA.A.0002.091224T1200Z-091225T1200Z/
/00000.0.IC.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLACK HAWK-MARSHALL-TAMA-POLK-JASPER-POWESHIEK-WARREN-MARION-
MAHASKA-CLARKE-LUCAS-MONROE-WAPELLO-DECATUR-WAYNE-APPANOOSE-DAVIS-
INCLUDING THE CITIES OF...WATERLOO...MARSHALLTOWN...TOLEDO...
DES MOINES...NEWTON...GRINNELL...INDIANOLA...KNOXVILLE...
OSKALOOSA...OSCEOLA...CHARITON...ALBIA...OTTUMWA...LEON...
CORYDON...CENTERVILLE...BLOOMFIELD
358 PM CST WED DEC 23 2009
...FLOOD WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE
THURSDAY NIGHT...
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* FLOOD WATCH FOR PORTIONS OF CENTRAL IOWA...NORTHEAST IOWA...
SOUTH CENTRAL IOWA AND SOUTHEAST IOWA...INCLUDING THE FOLLOWING
AREAS...IN CENTRAL IOWA...JASPER...MARSHALL...POLK... POWESHIEK
AND TAMA. IN NORTHEAST IOWA...BLACK HAWK. IN SOUTH CENTRAL
IOWA...APPANOOSE...CLARKE...DECATUR...LUCAS...
MAHASKA...MARION...MONROE...WARREN AND WAYNE. IN SOUTHEAST
IOWA...DAVIS AND WAPELLO.
* FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT
* MODERATE TO HEAVY RAINFALL...AND SOME THUNDERSTORMS...ARE
EXPECTED. THIS RAINFALL...COMBINED WITH SNOW MELT...MAY LEAD TO
FLOODING ON AREA RIVERS. LOCALIZED FLOODING MAY ALSO OCCUR IN
OTHER AREAS...SUCH AS URBAN AREAS...WHERE THE DRAINAGE SYSTEMS
MAY BE IMPAIRED DUE TO SNOW AND ICE CLOGGED INTAKES.
* ANOTHER CONCERN IS BREAK UP ICE JAMS ON AREA RIVERS. THE RUNOFF
WILL LIKELY BE ENOUGH TO BREAK UP THE ICE ESPECIALLY AS ONE
MOVES SOUTHWARD. SINCE THE RIVER ICE IS RELATIVELY
THIN...THOUGH...ONLY MINOR...LOCALIZED PROBLEMS DUE TO ICE JAMS
ARE EXPECTED.
* RIVERS MOST LIKELY TO BE AFFECTED INCLUDE THE CHARITON...DES
MOINES RIVER FROM DES MOINES DOWNSTREAM...AS WELL AS THE SOUTH
SKUNK...CEDAR CREEK...AND THE THOMPSON RIVERS. OTHER SMALLER
STREAMS AND CREEKS MAY ALSO BE AFFECTED.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.
YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE
FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE
PREPARED TO TAKE ACTION SHOULD FLOODING DEVELOP.
$$
ZOGG