National Weather Service United States Department of Commerce

Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

 

Pictures from around western Colorado and eastern Utah

 

SURFACE  |  UPPER AIR  |  CAMERAS  |  WINTER DATA  | ROAD CONDITIONS 

 

Winter Data

 Snow data  | Avalanche Information | Snow Information  |  Wind Chill 

 Snow Data

Daily SNOTEL Reports using Old 1961 to 1990 climate averages. From NRCS 

"SNOTEL (Snow Telemetry) is a remote measuring system, operated and maintained by the Snow Survey branch of the Natural Resources Conservation Service , designed to determine the water equivalent (not snow depth) of mountain snowpacks. 

Avalanche Information

Snow Information

Wind Chill 

 

 

Wind Chill Chart
Temperature (°F)
Wind
Speed
(MPH)
calm 40 35 30 25 20 15 10 5 0 -5 -10 -15 -20 -25
5 36 31 25 19 13 7 1 -5 -11 -16 -22 -28 -34 -40
10 34 27 21 15 9 3 -4 -10 -16 -22 -28 -35 -41 -47
15 32 25 19 13 6 0 -7 -13 -19 -26 -32 -39 -45 -51
20 30 24 17 11 4 -2 -9 -15 -22 -29 -35 -42 -48 -55
25 29 23 16 9 3 -4 -11 -17 -24 -31 -37 -44 -51 -58
30 28 22 15 8 1 -5 -12 -19 -26 -33 -39 -46 -53 -60
35 28 21 14 7 0 -7 -14 -21 -27 -34 -41 -48 -55 -62
40 27 20 13 6 -1 -8 -15 -22 -29 -36 -43 -50 -57 -64
45 26 19 12 5 -2 -9 -16 -23 -30 -37 -44 -51 -58 -65

"Calm-air" as used in wind chill determinations actually refers to the conditions created by a person walking briskly (at 4 miles-per-hour) under calm wind conditions.

Frostbite Time for Exposed Skin (minutes)

  30   15   10   5