Three waves of winter storms will move across the Northland between Thursday and Monday night. A Winter Storm Warning is in effect and included at the bottom of this post.
The first two waves my not be distinguishable from each other. Once the snow starts falling during the day on Thursday, it may not stop until during the night on Saturday. The break between the storms happens during the day on Friday. Heavier snow starts again in the late afternoon on Friday and continues into Saturday. Snow could be very heavy at times. As you can see in the North American Mesoscale model below, Flagstaff is easily in the 1-2 foot zone.
The National Weather Service has produced an interesting animation of snowfall amounts. Notice the heavier snowfall along the Mogollon Rim.
After a rest on Sunday, the snow will start again on Sunday evening and continue until Tuesday morning. This storm is not included in the current Winter Storm Warning. This storm could bring another 10-14 inches of snow. I expect another warning will be issued for this storm.
It’s difficult to differentiate between the shades of gray in the total snowfall image below. Flagstaff could be looking at 3 feet, or more, of snow over the next 5-6 days. Be careful. Enjoy The beauty with a mug of hot chocolate.
URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE FLAGSTAFF AZ 913 PM MST WED JAN 18 2017 AZZ004-006-007-015-038-191900- /O.CON.KFGZ.WS.W.0001.170119T1300Z-170121T1900Z/ KAIBAB PLATEAU-GRAND CANYON COUNTRY-COCONINO PLATEAU- WESTERN MOGOLLON RIM-OAK CREEK AND SYCAMORE CANYONS- INCLUDING THE CITIES OF...JACOB LAKE...GRAND CANYON VILLAGE... VALLE...FLAGSTAFF 913 PM MST WED JAN 18 2017 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM THURSDAY TO NOON MST SATURDAY ABOVE 5500 FEET... * TIMING...LIGHT TO MODERATE SNOW WILL DEVELOP AND SPREAD FROM WEST TO EAST DURING THE DAY THURSDAY. MODERATE TO HEAVY SNOW WILL DEVELOP THURSDAY NIGHT...DECREASING IN INTENSITY DURING THE DAY FRIDAY. A SECOND WAVE OF MODERATE TO HEAVY SNOW WILL DEVELOP FRIDAY EVENING THROUGH SATURDAY MORNING. * GENERAL EVENT TOTAL SNOW ACCUMULATIONS...DEPENDING ON YOUR LOCATION WITHIN THE WARNING AREA...EXPECT 8 TO 16 INCHES BETWEEN 5500 AND 7000 FEET AND 12 TO 24 INCHES ABOVE 7000 FEET. CONSULT POINT SPECIFIC FORECASTS AT: WEATHER.GOV/FLAGSTAFF. * SNOWFALL FORECAST FROM 6 AM MST THURSDAY UNTIL NOON MST SATURDAY... DONEY PARK 10 TO 16 INCHES FLAGSTAFF 16 TO 22 INCHES GRAND CANYON 12 TO 18 INCHES JACOB LAKE 14 TO 20 INCHES NORTH RIM 20 TO 26 INCHES VALLE 9 TO 15 INCHES WILLIAMS 18 TO 24 INCHES PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING...DUE TO SIGNIFICANT AMOUNTS OF SNOW AND STRONG WINDS PRODUCING LIMITED VISIBILITIES. DRIVING WILL BE EXTREMELY DANGEROUS DURING THIS STORM. FOR THE LATEST ROAD CONDITIONS AND CLOSURES...CALL THE ADOT FREEWAY MANAGEMENT SYSTEM AT 1 888 411 7623 OR VISIT THEIR WEB SITE AT WWW.AZ511.COM. ADDITIONAL WEATHER INFORMATION IS ON THE WEB AT WWW.WEATHER.GOV/FLAGSTAFF.