BLIZZARD WATCH
Warning Issue Date: 326 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 MODERATE SNOW WILL CONTINUE THROUGH
7 AM THIS MORNING ACROSS ALL OF CENTRAL IOWA. ACCUMULATIONS OF 1
TO 2 INCHES OF NEW SNOW WILL BE POSSIBLE DURING THIS TIME.
VISIBILITIES WILL GENERALLY RANGE FROM 1 TO 2 MILES ALTHOUGH
ISOLATED HEAVIER SNOWS IN SOUTHERN IOWA MAY LOWER VISIBILITIES
TO LESS THAN A MILE AT TIMES.
* 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
WINTER STORM WARNING
Warning Issue Date: 326 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 MODERATE SNOW WILL CONTINUE THROUGH
7 AM THIS MORNING ACROSS ALL OF CENTRAL IOWA. ACCUMULATIONS OF 1
TO 2 INCHES OF NEW SNOW WILL BE POSSIBLE DURING THIS TIME.
VISIBILITIES WILL GENERALLY RANGE FROM 1 TO 2 MILES ALTHOUGH
ISOLATED HEAVIER SNOWS IN SOUTHERN IOWA MAY LOWER VISIBILITIES
TO LESS THAN A MILE AT TIMES.
* 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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