**Afternoon Update: I'm sticking with the morning forecast in regards to the snowfall on Friday. Todays Forecast Model forecast continues to keep the heaviest snowfall north of the I80 corridor.......4"-6" will fall north of I80, and may see higher amounts (7"-9") in far NE Iowa (Lancing area).....Pow County, along and south of I80 still looks good for mainly a 2" swath of snowfall, but could see 3"+ in the far NE.....Blowing/Drifting snow will also be an issue by afternoon Friday with gusty E-NE Winds.......
HIGH PRESSURE WILL PUSH QUICKLY EAST TODAY AS LOW PRESSURE MOVES IN FROM THE NORTH.....INCREASING SOUTHWEST WINDS WILL BRING WARMER AIR INTO IOWA TODAY AS THE HIGH TEMP NEARS 30. THE WARMUP WILL BE BRIEF HOWEVER AS AN ARCTIC COLD FRONT PLUNGES SOUTHWARD TONIGHT AND INTO SOUTHERN IOWA BY THURSDAY MORNING. VERY COLD AIR ALONG WITH WINDY CONDITIONS WILL DROP WIND CHILLS WELL BELOW ZERO FOR ALL OF IOWA OVERNIGHT TONIGHT - THE SAME FRONT WILL SQUEEZE OUT SOME LT SNOW FOR POW COUNTY INTO THURSDAY MORNING. THE COLD AIR WILL PERSIST THROUGH THURSDAY AND INTO THURSDAY NIGHT BEFORE SOME WARMING BY LATE IN THE WEEKEND....
THE NEXT THREAT FOR SIGNIFICANT SNOWFALL ARRIVES LATE THURSDAY NIGHT INTO FRIDAY AS A SYSTEM FROM NW IOWA MOVES THRU THE NORTHERN 1/2 OF THE STATE. 4-6+ INCHES OF SNOW/BLOWING SNOW COULD FALL ALONG AND NORTH OF THE I80 CORRIDOR, WITH 2-4 INCHES AS FAR SOUTH AS HWY 34 - THE SYSTEM WILL MOVE EAST BY FRIDAY EVENING/NITE. TOTAL SNOWFALL AMOUNTS FOR FRIDAY ARE HIGHLY DEPENDENT ON SNOW COVER LEFT FROM YESTERDAY - AS THE HIGHEST SNOWFALL TOTALS ARE LIKELY TO FALL OVER AREAS WITH THE HEAVIEST SNOWCOVER LEFT ON THE GROUND.......
Today (18th) thru next Monday (23rd): Mainly Dry/Breezy Today and Thursday (Lt Snow overnite tonite) - Snow and Breezy Friday - Dry Saturday - Lt Snow Sunday into Monday.
Tuesday (24th) thru Tuesday (31st): Dry Tues - Rain to Lt Snow/Windy Wed - Snow Thurs/Friday (27th/28th) - Then Dry.
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