A Blizzard Watch is in effect from 3am until 9pm Monday for Lyon County, A Blizzard watch is in effect from 6am Monday until Midnight Tuesday for the following counties, Buena Vista, Cherokee, Clay, Dickinson, Ida, OBrien, Osceola and Sioux. A Blizzard Watch is in effect from Noon Monday until 3am Tuesday for the following counties, Audubon, Black Hawk, Boone, Bremer, Butler, Calhoun, Carroll, Cerro Gordo, Crawford, Dallas, Emmet, Franklin, Greene, Grundy, Guthrie, Hamilton, Hancock, Hardin, Humboldt, Jasper, Kossuth, Marshall, Palo Alto, Pocahontas, Polk, Poweshiek, Sac, Story, Tama, Webster, Winnebago, Worth and Wright.

STRONG NORTHWEST WINDS OF 25 TO 35 MPH WITH GUSTS TO 50 MPH WILL
ARRIVE OVER NORTHWEST IOWA BY AROUND NOON MONDAY. THE STRONG WINDS
SHOULD THEN SPILL SOUTHEAST ACROSS THE REMAINDER OF THE AREA
MONDAY AFTERNOON…THEN CONTINUE THROUGH THE EVENING HOURS. THE
FRESH SNOW COVER THAT FELL FRIDAY NIGHT ALONG WITH AN EXPECTED 2
TO 4 INCHES OF ADDITIONAL SNOW COVER BY MONDAY AFTERNOON…WILL BE
HIGHLY PRONE TO SIGNIFICANT BLOWING AND DRIFTING OF SNOW. THESE
CONDITIONS WILL LIKELY PRODUCE BLIZZARD CONDITIONS FOR A PROLONGED
PERIOD MONDAY AFTERNOON AND EVENING. IN ADDITION…WITH THE STRONG
NORTHWEST WINDS USHERING IN AN ARCTIC AIR MASS INTO THE STATE DANGEROUSLY
COLD WIND CHILLS WILL DEVELOP BY MONDAY EVENING.

IN SUMMARY…EXPECT SNOW TO DEVELOP LATE SUNDAY NIGHT AND INTO
MONDAY MORNING WITH 2 TO 4 INCHES POSSIBLE. THE STRONG WINDS AND
POTENTIAL BLIZZARD CONDITIONS WILL ARRIVE WELL AFTER THE ONSET OF
SNOW. AT THIS TIME…RAPIDLY DETERIORATING CONDITIONS ARE
EXPECTED TO ARRIVE WEST OF INTERSTATE 35 BETWEEN NOON AND 3 PM
MONDAY…AND EAST OF INTERSTATE 35 BETWEEN 3 PM AND 6 PM.