The same powerful storm system that produced strong winds in northern Utah also brought gusty winds to far southwest Wyoming.
Every event with a place to put it; 1 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 SLC wrote it up.
The same powerful storm system that produced strong winds in northern Utah also brought gusty winds to far southwest 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 Salt Lake City, UT wrote its last area forecast discussion before the first event at Feb 7, 4:13 PM MST, 5 hours 27 minutes earlier.
Area Forecast Discussion National Weather Service Salt Lake City UT 413 PM MST Tue Feb 7 2017 .SYNOPSIS...A warm and moist pacific system will impact mainly northern and central Utah and southwest Wyoming through tonight. A stronger pacific trough is expected to impact all areas Friday through Saturday. && .SHORT TERM (Through 00z Friday)...The deep moisture tap that had been penetrating inland off the eastern pacific has now shifted downstream of the area, with the remnant tap now impacting the central high Sierra. Significant shadowing can be noted downstream of the Sierra in satellite, with guidance continuing to trend down in both PWAT and IVT over the next 12 hours. The next belt of a strengthening eastern pacific jet continues to nose into northern Utah with a near zonal (though slight WNW) orientation driving strong deep layer WNW winds in the mid/upper levels. A flattening wave embedded in this flow is currently tracking inland across Oregon remaining poised to translate east through central Idaho/northern Wyoming. Precip across northern Utah has rapidly tapered with loss of the deep moisture plume downstream, though ample moisture and a near moist neutral profile coupled with the strong WNW winds continues to maintain orographic precip along and downstream of the northern mountains this afternoon (snow above 7/7500ft). Have maintained the Winter Storm Warning due to additional light accumulations and the strong winds in place, as the high mountain areas continue to see adverse conditions in many locations. Refer to WSW for additional details/impacts. The near zonal pattern in place will begin to buckle across the western Great Basin overnight tonight as a low amplitude ridge builds along the pacific coast, this allowing the previously mentioned wave to roll over in a southeasterly orientation across SW Wyoming tomorrow morning. Shallow cold advection will occur across northern Utah namely in the H6-H7 layer increasing low level lapse rates while likely retaining orographic precip in and downstream of the mountains into the morning hours. this said, building heights aloft in response to the amplifying ridge upstream should trend to reduce orographic influence and areal coverage of mountain precip fairly rapidly Wednesday. Have trended PoPs down. Models continue to remain in agreement that this ridge will shift overhead Thursday allowing further buckling the upper jet while lifting it well north of the area. WAA within this subsident environment will trend to boost the already mild temps across the area further, and continue to forecast mid to upper 50s many areas along the Wasatch Front and near 70F in Dixie. Have shaved PoPs all areas outside of the UT/ID border region Thursday as even with somewhat ample moisture remaining in place, do not see any mechanisms for lift south of Idaho. .LONG TERM (AFTER 00Z Friday)...Models have stayed fairly consistent and in agreement for the start of the long term period with the deep trof in the ern Pac and a long fetch of deep moisture on the downstream side of this trof streaming up from the tropics and into the nwrn US. Models continue to bring a heavy precip event to our CWA as the Pac trof advances to the coast and this stream spreads into n UT by early Fri. The moisture stream shifts gradually swd across the CWA thru Fri night bringing widespread rain. Snow levels will stay high during this time due to the tropical origins of this moisture and heavy runoff could bring local flooding. This threat exists both on steep drainages in rocky terrain as well as in poorly drained areas with remaining snow pack. A cold front associated with the main trof will be moving into the CWA Fri eve and will advance across the CWA overnight into Sat morning. This feature will drop snow levels and lower the flood threat across the north. Meanwhile the moisture stream shifts out of the srn CWA and the flood threat there will be ending as well. A cold northerly flow follows the front across the CWA with some snow possible down the to valley floors across the north Sat morning. Med range guidance diverges at this point on handling the closed low that develops out of the srn end of the upper trof with the EC farther south and east by Sun morning (over NM) with the precip threat ending. The farther north and west GFS (over nern AZ) keeps the threat of wrap around precip going into Mon. Prefer the EC ideas here but have left some small pops in the south and east Sun into Mon as confidence in any one solution is low. The airmass becomes stable going into mid week and the BC guidance wants to return the CWA to an inversion temp pattern. Suspect this may be overdone as we have now warmed considerably and the potential for a strong inversion will be lower once we're in mid Feb. && .AVIATION...VFR conditions and (strong at times) southerly/southwesterly winds will prevail through the afternoon and evening at the KSLC terminal. Winds will likely shift to the west/northwest around 05-07Z. Although ceilings should generally remain AOA 7K ft through the period, there is a chance ceilings will briefly dip slightly below this value at times this aftn/evening. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...Winter Storm Warning until 4 AM MST Wednesday for UTZ007>010-517. WY...None. && Merrill/Wilensky/Carr For more information from NOAA's National Weather Service visit... http://weather.gov/saltlakecity For frequently asked questions about the Area Forecast Discussion visit... http://weather.gov/saltlakecity/general/afd_faqs.php
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SALT LAKE CITY UT 251 AM MST TUE FEB 7 2017 UTZ001>016-019>021-517-518-WYZ021-081415- CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT- SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT- GREAT SALT LAKE DESERT AND MOUNTAINS-WASATCH MOUNTAIN VALLEYS- WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80- WESTERN UINTA MOUNTAINS-WASATCH PLATEAU/BOOK CLIFFS- WESTERN UINTA BASIN-CASTLE COUNTRY-SAN RAFAEL SWELL- SANPETE/SEVIER VALLEYS-WEST CENTRAL UTAH-SOUTHWEST UTAH- UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH- GLEN CANYON RECREATION AREA/LAKE POWELL-CENTRAL MOUNTAINS- SOUTHERN MOUNTAINS-SOUTHWEST WYOMING- 251 AM MST TUE FEB 7 2017 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF UTAH AND SOUTHWEST WYOMING. .DAY ONE...TODAY AND TONIGHT SNOW...HEAVY AT TIMES WILL CONTINUE IN THE MOUNTAINS NORTH OF INTERSTATE 70 DURING THE DAY ALONG WITH STRONG GUSTY WINDS. GUSTY WINDS ARE ALSO EXPECTED ACROSS THE WEST DESERT AND SOUTHWEST WYOMING THIS AFTERNOON. WINTER DRIVING CONDITIONS WILL CONTINUE TO IMPACT TRAVEL OVER THE MOUNTAIN PASSES FROM SOLDIER SUMMIT NORTHWARD EARLY TUESDAY. SNOW LEVELS WILL RISE TO NEAR 7500 TO 8000 FEET DURING THE AFTERNOON WITH TRAVEL IMPACTS BECOMING LIMITED TO THE HIGHEST ELEVATIONS. RAIN ON SNOW MAY CAUSE PONDING OF WATER IN AREAS WITH POOR DRAINAGE...MAINLY IN WEBER...BOX ELDER AND CACHE COUNTIES. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE NEXT PACIFIC STORM WILL BRING POTENTIALLY HEAVY RAIN AND HIGH ELEVATION SNOW TO THE OUTLOOK AREA FRIDAY INTO SATURDAY. HEAVY RUNOFF COULD DEVELOP IN MANY DRAINAGES ACROSS THE AREA FROM THIS RAIN. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. ROGOWSKI/DEWEY FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY FOR INFORMATION ON POTENTIAL ROAD TRAVEL IMPACTS VISIT... HTTP://WWW.UDOTTRAFFIC.UTAH.GOV/ROADWEATHERFORECAST.ASPX
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
Peak recorded wind gusts in Uinta County, Wyoming included 62 mph at the Evanston-Uinta County Airport - Burns Field ASOS and 59 mph at the Church Butte WYDOT sensor.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2017Every state in 2017This day in weather historyWarnings in Wyoming, February 2017
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: 680333.