A period of high winds developed for the Interstate 80 wind corridors between Laramie and Rawlins, as well as the south Laramie Range.
Every event with a place to put it; 4 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 period of high winds developed for the Interstate 80 wind corridors between Laramie and Rawlins, as well as the south Laramie Range.
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 23, 11:01 PM MST, 3 hours 59 minutes earlier.
Area Forecast Discussion National Weather Service Cheyenne WY 1101 PM MST Wed Nov 23 2016 .SHORT TERM...(This evening through Friday night) Issued at 153 PM MST Wed Nov 23 2016 Winds are the primary forecast concern in the short term. Currently...Low pressure being analyzed on surface analysis over central Idaho with a trailing cold front into northwest Utah and northeastern Nevada. Radar is pretty much PPINE across southeast Wyoming and Nebraska Panhandle. Expecting showers to eventually begin increasing across southwest Carbon County later this afternoon. Can see on latest IR imagery some cooling cloud tops just west of that area, spreading eastward, so do believe this forecast is still on track. 700mb winds really begin ramping up towards 00Z today, up to 40kts as the low approaches. By 06Z, 700mb winds up to 45kts out that way as the upper vort center moves into northwestern Carbon County. Latest WRKHGT forecast product showing the Craig to Casper 850/700mb height gradients increasing to 60/48mtrs by 09Z. Do believe this will be the timeframe for strongest winds. Latest GFS soundings showing winds just off the surface increasing over the I-80 Summit after 09Z tonight with 50-55kts between 09 and 12Z. Went ahead with a high wind warning for the Summit as well as the Arlington warning that was already in effect. Lower area may not see the stronger winds as we do have an area of UVV moving over the area. Evening/Mid shifts though will need to monitor winds though to possibly expand the warnings east of the Laramie Range. Going to be a cold and blustery day for Thanksgiving across the area. 850/700mb winds across southeast Wyoming are 35/45kts respectively...so Cheyenne will easily be gusting to 40-45MPH. Still a little too early for wind advisories in the Panhandle, but it looks like a good shot as forecast 850mb winds are 35-40kts out there from 15-21Z. Clearing skies Thursday night into Friday will make for some pretty cold overnight temperatures. Teens should be pretty common, especially out west. Warmer temperatures for Friday as 700mb temperatures climb back above freezing. .LONG TERM...(Saturday through Wednesday) Issued at 153 PM MST Wed Nov 23 2016 Mildest day of the period will be on Saturday as the CWA resides on the back side of a departing upper ridge. max temps over the plains should reach well into the 50s with even a few lower 60s possible over the Panhandle. Trend back to colder and unsettled weather ensues on Sunday as a large upper trough moves ovr much of the western CONUS and next cold front sweeps across the CWA. This will bring some snow showers to mainly western parts of the CWA through Sunday night, especially the higher mtns. Rather cold temperatures will hold through Tuesday as additional shortwave energy dives southeast across the Rockys and amplifies the upper trough over the center of the nation. This will keep snow shower going at times over the mtns through Tuesday while more isolated activity occurs over the surrounding lower elevations. Dry and a little warmer Weds as a short upper ridge moves across ahead of the next upper trough that will move into the Pacific NW. && .AVIATION...(For the 06Z TAFS through 06Z Thursday night) Issued at 1057 PM MST Wed Nov 23 2016 A frontal passage will occur through mid morning Thursday with west to northwest winds increasing over the sites. The strongest winds will stretch from RWL to SNY where gusts to 30-40 kts will be common. Brief IFR vis in light snow will be possible at RWL over the next few hours, otherwise isolated showers with mainly VFR conditions will prevail behind the front. Expect winds to decrease by late afternoon into the evening. && .FIRE WEATHER... Issued at 153 PM MST Wed Nov 23 2016 Windy conditions expected this evening through Thursday as a low pressure system moves through the area. Wind prone areas could see wind gusts in excess of 60MPH along the I-80 corridor with gusts in excess of 40-45 MPH elsewhere. Fortunately...afternoon humidities will be well above critical levels and we do have some areas with a snow pack...so fire concerns should be pretty minimal. Cold temperatures to stay with us through the next week that will keep humidities in check. No fire weather concerns expected. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...High Wind Warning until 8 AM MST Thursday for WYZ110-116. NE...None. && SHORT TERM...GCC LONG TERM...RE AVIATION...ZF FIRE WEATHER...GCC
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 755 PM MST WED NOV 23 2016 WYZ101>119-250300- CONVERSE COUNTY LOWER ELEVATIONS-NIOBRARA COUNTY- NORTH LARAMIE RANGE-FERRIS/SEMINOE/SHIRLEY MOUNTAINS- SHIRLEY BASIN-CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY- EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL CARBON COUNTY- NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY- SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE- LARAMIE VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS- CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY- 755 PM MST WED NOV 23 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL WYOMING...SOUTH CENTRAL WYOMING AND SOUTHEAST WYOMING. .DAY ONE...TONIGHT A HIGH WIND WARNING IS IN EFFECT FOR THE ARLINGTON AREA AND SOUTHERN LARAMIE RANGE INCLUDING THE I-80 SUMMIT LATE TONIGHT. SEE THE LATEST HIGH WIND WARNING FOR FURTHER DETAILS. MORE SNOW IS EXPECTED ACROSS SOUTHEAST WYOMING TONIGHT THROUGH THURSDAY MORNING WITH SNOW AMOUNTS GENERALLY AN INCH OR LESS ACROSS THE PLAINS AND HIGH VALLEYS...AND 2 TO 4 INCH AMOUNTS POSSIBLE IN THE MOUNTAINS. REDUCED VISIBILITY AND SLICK CONDITIONS DUE TO BLOWING SNOW IN AND NEAR THE MOUNTAINS IS POSSIBLE INCLUDING THE INTERSTATE 80 CORRIDOR FROM RAWLINS TO CHEYENNE. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. NEZ002-003-019>021-054-055-095-096-250300- DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE- NORTH SIOUX-SOUTH SIOUX- 755 PM MST WED NOV 23 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN NEBRASKA. .DAY ONE...TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY SCATTERED SNOW SHOWERS WILL BE POSSIBLE THURSDAY MORNING MAINLY IN THE NORTHERN NEBRASKA PANHANDLE. LITTLE OR NO TRAVEL IMPACTS ARE ANTICIPATED WITH THIS SNOWFALL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The national radar mosaic for the moment the first event began.
4 high wind. Local standard time, as filed.
The WYDOT sensor at Cooper Cove measured sustained winds of 40 mph or higher.
The UPR sensor at Buford measured sustained winds of 40 mph or higher.
The WYDOT sensor at Remount Road measured sustained winds of 40 mph or higher.
The WYDOT sensor at Wildcat Trail measured sustained winds of 40 mph or higher.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2016Every state in 2016This day in weather historyWarnings in Wyoming, November 2016
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 2026-09-24. Each event’s entry at NCEI: 666508, 666509, 666510, 666511.