HYDROLOGIC OUTLOOK
Warning Issue Date: 318 PM CST FRI DEC 25 2009
RAINFALL AND MELTING SNOW MAY CAUSE PONDING IN LOW LYING AND
URBAN AREAS TONIGHT AS WELL AS RISES ALONG AREA CREEKS AND
RIVERS...
A SIGNIFICANT WINTER STORM HAS BROUGHT WARMER AIR...ALONG WITH
RAIN TO PARTS OF NORTHEAST IOWA...SOUTHWEST WISCONSIN AND SOUTHEAST
MINNESOTA ON THURSDAY. AS THE MAIN PART OF THE STORM SYSTEM MOVES
NORTHWARD TOWARDS THE UPPER MISSISSIPPI RIVER VALLEY REGION
TONIGHT...WARM AIR WILL CONTINUE TO PUSH INTO THE AREA LEADING TO
VERY MINIMAL TEMPERATURE FALLS. THUS...TEMPERATURES WILL STAY AT
OR ABOVE THE FREEZING MARK OVERNIGHT...ALLOWING FURTHER MELTING OF
THE SNOW PACK.
IN ADDITION...PRECIPITATION WILL FALL THROUGH MUCH OF THE NIGHT...MAINLY
IN THE FORM OF RAIN. AMOUNTS BETWEEN ONE HALF TO ONE INCH ARE EXPECTED
THROUGH FRIDAY MORNING.
THE COMBINATION OF THE RAINFALL ALONG WITH MELTING OF THE WIDESPREAD
SNOW PACK WILL INCREASE RUNOFF AMOUNTS...WHICH MAY LEAD TO PONDING
IN LOW LYING AND URBAN AREAS AS WELL AS WITHIN BANK RISES ALONG
AREA CREEKS AND RIVERS...WITH THE POSSIBILITY FOR SOME LOCALIZED
FLOODING. ALSO...WITH THE AMOUNTS OF WATER ENTERING THE RIVER
SYSTEMS THERE REMAINS POTENTIAL FOR ICE JAMS...WHICH COULD LEAD TO
SOME LOCALIZED FLOODING.
THOSE WITH RIVER INTERESTS OR WHO LIVE IN LOW LYING AREAS SHOULD
REMAIN ALERT FOR POSSIBLE WATER ISSUES OVER THE NEXT SEVERAL DAYS.
$$
BROOKS
WINTER WEATHER ADVISORY
Warning Issue Date: 951 PM CST THU DEC 24 2009
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST
FRIDAY...
A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST
FRIDAY.
* RAIN...MIXED AT TIMES WITH SLEET AND SNOW WILL CONTINUE THE
THROUGH THE OVERNIGHT HOURS.
* ADDITIONAL SNOW ACCUMULATIONS OF 2 TO 5 INCHES ARE EXPECTED
BEFORE THE STORM ENDS. UP TO A TENTH OF AN INCH OF ICE IS
POSSIBLE THROUGH FRIDAY.
* MOST MAIN ROADS WERE WET AND TRAVEL REPORTED AS FAIR BY LAW
ENFORCEMENT. CONDITIONS COULD DETERIORATE OVERNIGHT AGAIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.
$$
RABERDING
WEATHER.GOV/LACROSSE
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