WINTER STORM WARNING
Warning Issue Date: 302 PM CST THU DEC 24 2009
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM CST
SATURDAY...
...WINTER WEATHER ADVISORY WILL EXPIRE AT 3 PM CST THIS
AFTERNOON...
THE WINTER WEATHER ADVISORY WILL EXPIRE AT 3 PM CST THIS
AFTERNOON. A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM
CST SATURDAY.
* TIMING...ICY CONDITIONS FROM LIGHT FREEZING DRIZZLE AND MOISTURE
FREEZING ON SURFACES WILL BE A PROBLEM ON UNTREATED SURFACES
UNTIL THE SNOW BEGINS. SNOW WILL THEN SPREAD NORTH INTO THE AREA
LATE THIS AFTERNOON. IN ADDITION...ENOUGH WARM AIR ALOFT IS
WRAPPING INTO THIS SYSTEM...THAT THE STORM LAKE IOWA HAS A
THREAT OF SEEING A WINTRY MIX OF SLEET LATE TONIGHT AND
THURSDAY. ALTHOUGH THE SNOW WILL DIMINISH FROM TIME TO TIME...
THE SNOW WILL PERSIST THROUGH FRIDAY NIGHT...MODERATE TO HEAVY
AT TIMES.
* ACCUMULATIONS...ALL TOLD FROM TONIGHT THROUGH FRIDAY NIGHT...
SNOWFALL TOTALS OF 12 TO 18 INCHES ARE EXPECTED. SOME AMOUNTS
NEAR 20 INCHES ARE NOT OUT OF THE QUESTION ALONG I 90 IN
SOUTHWEST MINNESOTA. ICE ACCUMULATIONS TODAY WILL BE MINIMAL.
* WIND AND VISIBILITY...WINDS WILL TURN TO THE NORTH AND
NORTHWEST ON THURSDAY...LASTING THROUGH FRIDAY NIGHT. 20 TO 35
MPH WINDS WILL BE COMMON ON THURSDAY...INCREASING ON FRIDAY TO
25 TO 40 MPH. THE STRONGEST WINDS WILL BE ALONG AND WEST OF
THE JAMES RIVER VALLEY IN SOUTHEAST AND SOUTH CENTRAL SOUTH
DAKOTA. THE WIND COMBINED WITH THE SNOWFALL WILL LIKELY REDUCE
VISIBILITIES TO NEAR ZERO AT TIMES.
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...IF NOT IMPOSSIBLE
AT TIMES. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST TRAVEL...KEEP
AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF
AN EMERGENCY.
$$
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