WINTER STORM WARNING
Warning Issue Date: 643 AM CST MON DEC 07 2009
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST
WEDNESDAY...
...BLIZZARD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY AFTERNOON...
A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST
WEDNESDAY. A BLIZZARD WATCH REMAINS IN EFFECT FROM THIS EVENING
THROUGH WEDNESDAY AFTERNOON.
* SHORT TERM TRENDS: LIGHT TO OCCASIONALLY MODERATE SNOW WILL
PERSIST ACROSS MUCH OF CENTRAL IOWA THROUGH MID MORNING. SOME
INCREASE IN SNOWFALL INTENSITY IS EXPECTED BY MID MORNING IN
PORTIONS OF FAR SOUTHERN AND WESTERN IOWA AS HEAVIER SNOW MOVES
IN FROM NEBRASKA AND MISSOURI. VISIBILITIES WILL GENERALLY RANGE
FROM ONE AND A HALF TO 3 MILES ALTHOUGH AN OCCASIONAL DROP BELOW
ONE MILE MAY OCCUR FROM TIME TO TIME...MAINLY IN SOUTH AND WEST
IOWA. ADDITIONAL ACCUMULATIONS THROUGH MID MORNING WILL
GENERALLY BE AROUND AN INCH OR LESS.
* TIMING: THE LIGHT TO MODERATE SNOW IS EXPECTED TO LAST THROUGH
MIDDAY TODAY...BEFORE THE SNOWFALL INTENSIFIES THIS AFTERNOON
AND INTO THE EVENING HOURS. THE ACCUMULATING SNOWFALL WILL
DIMINISH ACROSS WESTERN IOWA LATE TONIGHT AND IN NORTHEAST
PORTION OF THE AREA BY WEDNESDAY AFTERNOON. BLIZZARD
CONDITIONS ARE EXPECTED BY LATE TUESDAY NIGHT THROUGH MUCH OF
WEDNESDAY.
* STORM TOTAL ACCUMULATIONS: SNOW ACCUMULATIONS OF 10 TO 14
INCHES ARE ANTICIPATED FOR MUCH OF CENTRAL IOWA. THE HEAVIEST
SNOWFALL ACCUMULATIONS ARE FORECAST DURING THE LATE AFTERNOON
HOURS TODAY THROUGH MIDNIGHT WHEN THE BULK OF THE SNOW
ACCUMULATIONS WILL OCCUR. THE BEST THREAT FOR RECEIVING OVER A
FOOT OF SNOW IS GENERALLY SOUTH OF HIGHWAY 20. ISOLATED
AMOUNTS UP TO 16 INCHES ARE FORECAST FROM EAST OF DES MOINES
TO SOUTH OF WATERLOO.
* WINDS/VISIBILITY: EAST TO NORTHEAST WINDS AT 10 TO 20 MPH ARE
EXPECTED TODAY AND INTO THE EVENING. BY LATE EVENING...NORTH
TO NORTHWEST WINDS WILL BEGIN INCREASING AND AFTER MIDNIGHT
TONIGHT...NORTHWEST WINDS OF 25 TO 35 MPH... WITH GUSTS OF 45
TO 50 MPH ARE EXPECTED. VISIBILITY LESS THAN ONE QUARTER OF A
MILE ARE EXPECTED FROM THE HEAVY SNOW THIS EVENING FROM TIME
TO TIME. HOWEVER...BY THE TIME THE WINDS INCREASE OVERNIGHT
AND INTO WEDNESDAY...WHITEOUT CONDITIONS WILL BECOME COMMON
WITH VISIBILITIES FREQUENTLY NEAR ZERO.
* IMPACTS: SIGNIFICANT TRAVEL CONCERNS ARE EXPECTED WITH THIS
DANGEROUS WINTER STORM...LIKELY BEGINNING BY THIS AFTERNOON
AND PERSISTING INTO THIS EVENING DURING THE HEAVIEST SNOWFALL
ACCUMULATION PERIOD. IN ADDITION TO THE HEAVY SNOW
ACCUMULATING ON ROADWAYS...VERY STRONG NORTH TO NORTHWEST
WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING OF SNOW AND
WHITEOUT CONDITIONS LATE TONIGHT INTO WEDNESDAY... LEADING TO
THE POTENTIAL FOR MAJOR TRAVEL IMPACTS AND ROAD CLOSURES. SNOW
DRIFTS OF 8 TO 12 FEET ARE POSSIBLE BY WEDNESDAY. WIND CHILL
READINGS ON WEDNESDAY WILL RANGE FROM 10 TO 20 BELOW ZERO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS
SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING.
SIGNIFICANT AMOUNTS OF SNOW AND BLOWING SNOW ARE FORECAST THAT
WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU
MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY.
A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS.
$$
COGIL
BLIZZARD WATCH
Warning Issue Date: 643 AM CST MON DEC 07 2009
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST
WEDNESDAY...
...BLIZZARD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY AFTERNOON...
A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST
WEDNESDAY. A BLIZZARD WATCH REMAINS IN EFFECT FROM THIS EVENING
THROUGH WEDNESDAY AFTERNOON.
* SHORT TERM TRENDS: LIGHT TO OCCASIONALLY MODERATE SNOW WILL
PERSIST ACROSS MUCH OF CENTRAL IOWA THROUGH MID MORNING. SOME
INCREASE IN SNOWFALL INTENSITY IS EXPECTED BY MID MORNING IN
PORTIONS OF FAR SOUTHERN AND WESTERN IOWA AS HEAVIER SNOW MOVES
IN FROM NEBRASKA AND MISSOURI. VISIBILITIES WILL GENERALLY RANGE
FROM ONE AND A HALF TO 3 MILES ALTHOUGH AN OCCASIONAL DROP BELOW
ONE MILE MAY OCCUR FROM TIME TO TIME...MAINLY IN SOUTH AND WEST
IOWA. ADDITIONAL ACCUMULATIONS THROUGH MID MORNING WILL
GENERALLY BE AROUND AN INCH OR LESS.
* TIMING: THE LIGHT TO MODERATE SNOW IS EXPECTED TO LAST THROUGH
MIDDAY TODAY...BEFORE THE SNOWFALL INTENSIFIES THIS AFTERNOON
AND INTO THE EVENING HOURS. THE ACCUMULATING SNOWFALL WILL
DIMINISH ACROSS WESTERN IOWA LATE TONIGHT AND IN NORTHEAST
PORTION OF THE AREA BY WEDNESDAY AFTERNOON. BLIZZARD
CONDITIONS ARE EXPECTED BY LATE TUESDAY NIGHT THROUGH MUCH OF
WEDNESDAY.
* STORM TOTAL ACCUMULATIONS: SNOW ACCUMULATIONS OF 10 TO 14
INCHES ARE ANTICIPATED FOR MUCH OF CENTRAL IOWA. THE HEAVIEST
SNOWFALL ACCUMULATIONS ARE FORECAST DURING THE LATE AFTERNOON
HOURS TODAY THROUGH MIDNIGHT WHEN THE BULK OF THE SNOW
ACCUMULATIONS WILL OCCUR. THE BEST THREAT FOR RECEIVING OVER A
FOOT OF SNOW IS GENERALLY SOUTH OF HIGHWAY 20. ISOLATED
AMOUNTS UP TO 16 INCHES ARE FORECAST FROM EAST OF DES MOINES
TO SOUTH OF WATERLOO.
* WINDS/VISIBILITY: EAST TO NORTHEAST WINDS AT 10 TO 20 MPH ARE
EXPECTED TODAY AND INTO THE EVENING. BY LATE EVENING...NORTH
TO NORTHWEST WINDS WILL BEGIN INCREASING AND AFTER MIDNIGHT
TONIGHT...NORTHWEST WINDS OF 25 TO 35 MPH... WITH GUSTS OF 45
TO 50 MPH ARE EXPECTED. VISIBILITY LESS THAN ONE QUARTER OF A
MILE ARE EXPECTED FROM THE HEAVY SNOW THIS EVENING FROM TIME
TO TIME. HOWEVER...BY THE TIME THE WINDS INCREASE OVERNIGHT
AND INTO WEDNESDAY...WHITEOUT CONDITIONS WILL BECOME COMMON
WITH VISIBILITIES FREQUENTLY NEAR ZERO.
* IMPACTS: SIGNIFICANT TRAVEL CONCERNS ARE EXPECTED WITH THIS
DANGEROUS WINTER STORM...LIKELY BEGINNING BY THIS AFTERNOON
AND PERSISTING INTO THIS EVENING DURING THE HEAVIEST SNOWFALL
ACCUMULATION PERIOD. IN ADDITION TO THE HEAVY SNOW
ACCUMULATING ON ROADWAYS...VERY STRONG NORTH TO NORTHWEST
WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING OF SNOW AND
WHITEOUT CONDITIONS LATE TONIGHT INTO WEDNESDAY... LEADING TO
THE POTENTIAL FOR MAJOR TRAVEL IMPACTS AND ROAD CLOSURES. SNOW
DRIFTS OF 8 TO 12 FEET ARE POSSIBLE BY WEDNESDAY. WIND CHILL
READINGS ON WEDNESDAY WILL RANGE FROM 10 TO 20 BELOW ZERO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WARNING FOR HEAVY SNOW AND BLOWING SNOW MEANS
SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING.
SIGNIFICANT AMOUNTS OF SNOW AND BLOWING SNOW ARE FORECAST THAT
WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU
MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR
VEHICLE IN CASE OF AN EMERGENCY.
A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS.
$$
COGIL
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