HYDROLOGIC OUTLOOK
Issue Date: 601 AM CST TUE DEC 22 2009
Expiration: 615 PM CST TUE DEC 22 2009

...SIGNIFICANT RAINFALL AND SNOW MELT POSSIBLE WEDNESDAY AND
THURSDAY...
A LARGE SWATH OF MOISTURE IS FORECAST TO PUSH INTO THE STATE
THROUGH THURSDAY...ALONG WITH TEMPERATURES ABOVE FREEZING. LOOK
FOR RAIN TO DEVELOP...GENERALLY ALONG AND SOUTH OF INTERSTATE
80...BY WEDNESDAY MORNING AND IS FORECAST TO CONTINUE THROUGH
THURSDAY. THERE WILL BE PERIODS OF FREEZING RAIN IN SOME AREAS
ALONG THE CORRIDOR OF INTERSTATE 80 DURING THE MORNING HOURS
WEDNESDAY BEFORE SWITCHING TO ALL RAIN BY WEDNESDAY AFTERNOON.
RAINFALL AMOUNTS OF THREE-QUARTERS OF AN INCH TO AN INCH AND A
HALF ARE ANTICIPATED WITH THIS SYSTEM BY THURSDAY. IN
ADDITION...THE CURRENT SNOW PACK CONTAINS AROUND ONE INCH TO AN
INCH AND A HALF OF LIQUID EQUIVALENT...LEADING TO THE POTENTIAL
FOR SIGNIFICANT RUNOFF FROM RAINFALL AND SNOW MELT.
HIGH TEMPERATURES ARE EXPECTED TO BE IN THE MIDDLE TO UPPER 30S
ACROSS CENTRAL TO SOUTHERN...WITH TEMPERATURES ANTICIPATED TO
REMAIN STEADY OR SLOWLY RISING INTO THE LOWER 40S DURING THE
OVERNIGHT HOURS WEDNESDAY INTO THURSDAY. AS A RESULT...A PROLONG
PERIOD OF TEMPERATURES ABOVE FREEZING WILL RESULT IN A SIGNIFICANT
AMOUNT OF SNOW MELT DURING THE TIME FRAME.
AREA STREAMS AND RIVERS ACROSS THE SOUTHERN HALF OF IOWA WILL
LIKELY EXPERIENCE LARGE RISES DUE TO THE COMBINATION OF RAINFALL
AND SNOW MELT BY THURSDAY AND RIVER FLOODING MAY BECOME
PROBLEMATIC. BASINS WHICH APPEAR MOST LIKELY TO BE AFFECTED
INCLUDE THE CHARITON...LOWER DES MOINES...SOUTH SKUNK...CEDAR
CREEK...AND THE THOMPSON RIVERS ACROSS THE SOUTHERN HALF OF
CENTRAL IOWA.
$$
PODRAZIK/COGIL

HAZARDOUS WEATHER OUTLOOK
Issue Date: 535 AM CST TUE DEC 22 2009
Expiration: 530 AM CST WED DEC 23 2009

Expires:200912231130;;
FLUS43 KDMX 221134
HWODMX
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
520 AM CST TUE DEC 22 2009
IAZ061-062-072>075-081>086-092>097-231130-
JASPER-POWESHIEK-MADISON-WARREN-MARION-MAHASKA-ADAMS-UNION-CLARKE-
LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS-
520 AM CST TUE DEC 22 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.
.DAY ONE...TODAY AND TONIGHT
PATCHY LIGHT FREEZING DRIZZLE WITH AFFECT THE AREA THROUGH THIS
EVENING LEADING TO A LIGHT GLAZE OF ICE ACCRUAL.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
A MAJOR WINTER STORM WILL AFFECT THE STATE WEDNESDAY THROUGH
FRIDAY. WARMER AIR IS EXPECTED TO PUSH INTO THE SOUTHERN PORTION OF
THE STATE WHICH WILL LEAD TO THE PRECIPITATION TO BE ALL RAIN
GENERALLY ALONG AND SOUTH HIGHWAY 34 ON WEDNESDAY INTO THURSDAY.
EXPECT A MIX OF SNOW...SLEET AND RAIN THURSDAY NIGHT BEFORE
SWITCHING TO ALL SNOW DURING THE OVERNIGHT HOURS THURSDAY INTO
FRIDAY. RAINFALL AMOUNTS OF 1 TO NEARLY 2 INCHES ARE POSSIBLE
WEDNESDAY INTO THURSDAY AND TEMPERATURES REMAINING IN THE UPPER
30S TO AROUND 40. WITH THE RAINFALL AMOUNTS ON TOP OF THE SNOW
MELT...AREAS OF FLOODING ARE POSSIBLE...ESPECIALLY WITH RAPID
RISES DUE TO ICE JAMS ALONG RIVERS AND CREEKS.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED...BUT SNOWFALL AMOUNTS AND
ICE ACCUMULATION REPORTS ARE APPRECIATED AND ENCOURAGED.
EMERGENCY MANAGER CONFERENCE CALL TENTATIVELY SCHEDULED AT 11AM CST.
$$