Advisory Issued
Precipitation is on the way. Here is the Winter Weather Advisory that was issued this morning.
URGENT – WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
509 AM MST THU DEC 10 2020
COZ018-019-102200-
/O.CON.KGJT.WW.Y.0025.201210T2200Z-201212T0700Z/
NORTHWEST SAN JUAN MOUNTAINS-SOUTHWEST SAN JUAN MOUNTAINS- INCLUDING THE CITIES OF TELLURIDE, OURAY, LAKE CITY, SILVERTON, RICO, AND HESPERUS
509 AM MST THU DEC 10 2020
…WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO MIDNIGHT MST FRIDAY NIGHT…
* WHAT…SNOW MODERATE TO HEAVY AT TIMES. TOTAL SNOW ACCUMULATIONS OF 4 TO 8 INCHES WITH UP TO 12 INCHES FROM NEAR WOLF CREEK PASS SOUTHWARD.
* WHERE…SOUTHWEST SAN JUAN MOUNTAINS AND NORTHWEST SAN JUAN MOUNTAINS.
* WHEN…HEAVIEST SNOW RATES EXPECTED THIS EVENING THROUGH THE EARLY MORNING HOURS FRIDAY.
Remember when they include Hesperus in an advisory it usually only applies to Mayday which is around 5 miles north of 160 at nearly 8,800 feet.
It is also important to note that this advisory is only issued for 33 hours and expires very late Friday night. At the moment the models are indicating that the heaviest snow for Telluride, Silverton, and Ouray will fall after this current advisory expires. This leads me to believe that another advisory or two will be issued from Saturday morning through Sunday morning.
The air is going to be cold enough that all areas should see some additional snow Saturday afternoon and evening despite it being a northerly flow set up.
I typically show only storm totals. Because of the way this advisory was issued I decided to break it down into two parts.
Today Through Late Friday Night
GFS
Canadian
Euro
Additional Amounts Friday Through Early Sunday
GFS
Canadian
Euro
Three Day Totals
Canadian
Euro
10-1 Ratio Snow Three Day Totals
These models only forecast snow at a 10 to 1 ratio (10 inches of snow to 1 inch of liquid). Higher elevations above 9,000 feet will see SLR’s (snow liquid ratios) 15+ to 1. Saturday the ratio could be even higher.
GFS
Canadian
Euro
I would love to read some snow reports over the next couple of days. Click the contact link in blue to send me a report.
Unless something comes up earlier, my next update will be Friday around noon. Thanks for following!