A frigid arctic air mass combined with sustained winds of 15 to 25 mph combined with temperatures of 10 degrees above to 25 degrees below zero produced wind chill values from 25 to 45 degrees below zero over portions of southeast Wyoming.
Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CYS wrote it up.
A frigid arctic air mass combined with sustained winds of 15 to 25 mph combined with temperatures of 10 degrees above to 25 degrees below zero produced wind chill values from 25 to 45 degrees below zero over portions of southeast Wyoming.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before the first event at Nov 11, 10:50 PM MST, 1 hour 10 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
3 extreme cold/wind chill. Local standard time, as filed.
Temperatures from 10 degrees above to 25 degrees below zero combined with sustained winds of 15 to 20 mph produced wind chill values of 25 to 35 degrees below zero.
Temperatures from 10 degrees above zero to 25 degrees below zero combined with sustained wind speeds of 15 to 25 mph produced wind chill values from 25 to 40 degrees below zero.
Temperatures from 10 degrees above to 30 degrees below zero combined with sustained wind speeds of 15 to 25 mph to produce wind chill values from 25 to 45 degrees below zero.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2014Every state in 2014This day in weather historyWarnings in Wyoming, November 2014
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 545545, 545546, 545547.