Strong winds accompanied a cold front as it swept across the Continental Divide. Locations in the foothills of the Absaroka and Wind River ranges were most prone to the high wind.
Every event with a place to put it; 2 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 RIW wrote it up.
Strong winds accompanied a cold front as it swept across the Continental Divide. Locations in the foothills of the Absaroka and Wind River ranges were most prone to the high wind. Peak speeds included 76 mph west of Clark, 61 mph at Lander, 59 mph north of Lander, and 58 mph at Meeteetse.
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 Riverton, WY wrote its last area forecast discussion before the first event at Apr 18, 10:53 AM MST, 2 hours 46 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 1153 AM MDT FRI APR 18 2014 .SHORT TERM...TODAY THROUGH SUNDAY NIGHT WV IMAGERY SHOWS COMPLEX BUT MOSTLY TAME UPR LVLS...WITH LOW AMPLITUDE TROF RIDGE TROF PATTERN ACROSS THE NRN CONUS...LYING OVR TOP OF SUB TROPICAL BASED TROF RIDGE TROF. WEAK CLOSED LOW ANCHORS THE SRN PORTION OF THE W COAST TROF. THE NRN BRANCH OF THE UPR LVLS IS MOVING FASTER THAN THE SRN BRANCH. RIDGE CURRENTLY OVR WY WILL GIVE WAY TO THE QUICK MOVING TROF TO THE WEST. HOWEVER...MOISTURE ASSOCIATED WITH THE WRN TROF IS MODEST FOR THE MOST PART DUE IN PART TO ITS QUICK MOVEMENT WITH THE BEST WV CURRENTLY LOADED TO OUR W AND NW...ASSOCIATED W/BAROCLINIC LEAF IN THE PAC NW...STARTING TO BE RAPPED INTO WHAT WILL BE A RAPIDLY DEVELOPING CYCLONE WELL TO OUR N NEAR THE NRN ID/CA BORDER. ADDITIONALLY...THERE IS JET PHASING GOING ON NOW AS A PRECURSOR TO RAPID CYCLOGENESIS. THE SFC IS CURRENTLY REPRESENTED BY A BROAD LOW CENTERED NEAR N CNTRL MT OUT IN FRONT OF THE WRN TROF...W/ A LEE SIDE TROF NOW EXTENDING DOWN INTO OUR ERN FA. TODAY...THE PROBLEM WITH THIS MULTI-PART UPR SYSTEM IS THAT INSTEAD OF FOCUSING ALL DYNAMICS FOR THE DEVELOPMENT OF ONE LARGE DEEP BRUTAL SYSTEM...THE LOWER LVLS ARE GOING TO BE BUSY STRETCHING AND TRYING TO SPIN UP AT LEAST THREE LOW PRESSURE SYSTEMS OVR THE NEXT COUPLE OF DAYS...FROM N OF THE BORDER...S INTO THE SRN PLAINS. THE AVAILABLE MOISTURE COMING IN FROM THE WEST WILL ALSO GET DIVVIED UP WITH THE BEST WV HEADING UP NORTH WITH THE STRONGEST DEVELOPING CYCLONE AND THE REST MOSTLY MISSING US SOUTH ON SATURDAY AS THE OTHER LEE CYCLONE DEVELOPS. OUR WRN MOUNTAINS WILL FOR A SHORT PERIOD BE IN DECENT POSITION THIS MORNING THRU MID AFTERNOON FOR OROGRAPHICALLY INDUCED PRECIP. BY THIS AFTERNOON...LOW LVLS WILL WARM ENOUGH...WITH SFC HIGHS E OF THE DIVIDE...APPROACHING OR JUST CRESTING THE 70 DEG MARK IN THE BASINS AND EAST...TO CREATE SOME INSTABILITY LATE THIS AFTERNOON AND EARLY EVENING. HOWEVER...EVEN WITH BEST UPR FORCING FROM JET THIS AFTERNOON/EVENING...MEAGER MOISTURE WILL SEVERELY LIMIT CONVECTIVE DEVELOPMENT FOR MOST AREAS. THE BEST CHANCE FOR ISOLATED THUNDER E OF THE DIVIDE WILL ALL BE ABOUT THE TIMING...AND WILL TAKE A FRONT...SOME BRIEF SHALLOW MOISTURE POOLING NEAR NEAR THE FRONT...AND PROBABLY SOME NEARBY TERRAIN TO LEND A HELPING HAND. ATTM...THE BEST LOCATION APPEARS TO BE IN THE BIG HORN BASIN...WITH THE FAR SOUTHERN PORTION MOST FAVORABLE...ALONG THE OWL CREEK AND BRIDGER MOUNTAINS...NORTH TO PERHAPS THERMOPOLIS AND/OR WORLAND. MOSTLY DRY ADIABATIC ATMOSPHERE SOUTH AND EAST OF THE THE BIG HORN BASIN WILL ONLY BE SLIGHTLY UNSTABLE EVEN WITH RELATIVELY HIGH LAPSE RATES...AND THE WINDOW SHORT FOR CONVECTION TO GET THRU. DIFFICULT TO ASCERTAIN WHERE THE NAM IS/WAS GETTING THE RELATIVELY HIGH BL MOISTURE IN A SW FLOW REGIME FOR NATRONA COUNTY...GENERATING RATHER LARGE CAPE. IT HAS TONED DOWN SOME IN TONIGHTS RUN...BUT STILL SHOWS IT TO SOME DEGREE...ALBEIT UNDER FAIRLY WELL CAPPED SKIES. OVERALL...JUST DOESN'T LOOK ALL THAT PROMISING. STILL HAVE LOW POPS FOR LATE AFTERNOON/EVE JUST IN CASE...WITH VIRGA THE MOSTLY LIKELY MAIN EVENT FOR MUCH OF THE AREA. 2 INCHES OF WET SNOW AT BEST IN ISOLATED LOCATIONS IN THE WRN MOUNTAINS...WITH MOST LOCATIONS GETTING HALF THAT WITH SEASONALLY WARM CONDITIONS. OTHERWISE...THE SFC TO MID LVL P AND T PATTERN WILL FAVOR INCREASED WINDS THRU THE DAY. HOWEVER IT STILL APPEARS THAT ONLY VERY ISOLATED HIGH WIND CONDITIONS WILL MANIFEST...IF AT ALL. JUST NOT ENOUGH CONFIDENCE TO WARN FOR THIS. SATURDAY WILL BE SOMEWHAT COOLER N OF THE FRONT...BUT NOTHING TOO DRASTIC WITH HIGH TEMPS STILL REACHING INTO THE MIDDLE 60S FOR MANY LOW ELEVATION LOCALS...AND ALL WITH LESS WIND THAN FRIDAY. AS A WEAK PRESSURE GRAD FILLS IN. STALLED FRONT NEAR AND JUST NORTH OF THE WY/CO BORDER WILL ALLOW FOR SOME CONTINUED CONVECTIVE DEVELOPMENT...ESPECIALLY BY MID DAY...AND MAY PUSH UP TO THE VERY SRN REACHES OF NATRONA COUNTY. SUNDAY AFTERNOON WILL OFFER THE NEXT BEST CHANCE FOR ISOLATED TO WIDELY SCATTERED SHOWERS WITH SOME THUNDER AS LOW LEVELS WARM (NEAR 70S AGAIN) AND A WEAK UPR DISTURBANCE MOVES THROUGH WHILE A WEAK CLIPPER TYPE FRONT BRUSHES OUR ERN ZONES. GENERALLY 30 PERCENT OF LESS POPS FOR THIS PERIOD. .LONG TERM...MONDAY THROUGH FRIDAY OUR MAIN WEATHER MAKER DURING THIS PERIOD WILL BE AN UPPER LOW WOBBLING ITS WAY EASTWARD ALONG THE ALEUTIAN ISLANDS EARLY THIS MORNING. THIS SYSTEM WILL TAKE THE FORM OF AN UPRIGHT TROUGH ALONG 130W BY 00Z TUESDAY...PUMPING UP A RIDGE ACROSS THE ROCKIES. THIS WILL BRING DRY AND MILD CONDITIONS ON MONDAY. TROUGH BECOMES MORE NEGATIVELY TILTED AS IT PUSHES INTO THE INTERMOUNTAIN WEST ON TUESDAY AND THEN THE FUN BEGINS. 18/00Z ECMWF IS MUCH MORE PROGRESSIVE THAN EARLIER RUNS...SWINGING THE UPPER TROUGH ACROSS THE ROCKIES ON WEDNESDAY AND INTO THE PLAINS WEDNESDAY NIGHT...SHORTWAVE RIDGE BUILDING IN THURSDAY MORNING. THOUGH GFS/GEFS MEAN HAVE ALSO TRENDED MORE PROGRESSIVE...THE DETERMINISTIC CONTINUES BRIEFLY STALL OUT A CLOSED UPPER LOW OVER MONTANA ON WEDNESDAY BEFORE PUSHING THE WHOLE MESSY TROUGH OUT INTO THE PLAINS THURSDAY NIGHT. THESE DIFFERENCES ALSO TRANSLATE INTO SUBSTANTIAL SPREAD UPSTREAM WITH ECMWF BRINGING NEXT PACIFIC SYSTEM ONSHORE ON FRIDAY WHILE GFS KEEPS THE SYSTEM OFF THE COAST. ECMWF DETERMINISTIC IS IN OVERALL AGREEMENT WITH THE EC EM...THE GFS IS ON THE SLOW END OF ITS ENSEMBLE MEMBERS. GIVEN THE ONGOING RUN-TO-RUN INCONSISTENCIES...THE FORECAST GIVES THE MOST WEIGHT TO CONTINUITY. ON TUESDAY...VERY MILD AND WINDY CONDITIONS WILL DEVELOP ACROSS CENTRAL AREAS AS PACIFIC COLD FRONT PUSHES ACROSS IDAHO WITH INCREASING CHANCES OF SHOWERS AND THUNDERSTORMS ACROSS THE WEST...ISOLATED STORMS SPREADING EAST LATE IN THE DAY. SNOW LEVELS WILL REMAIN QUITE HIGH TUESDAY AHEAD OF THE FRONT...GENERALLY AROUND 10KFT AND UP. RAPID SNOW MELT AND SIGNIFICANT RISES IN CREEKS AND STREAMS WILL BE A CONCERN WITH THE WARM TEMPERATURES...ESPECIALLY WITH THE POTENTIAL FOR RAIN NEAR AND BELOW 10KFT. ON TUESDAY NIGHT AND WEDNESDAY...COLD FRONT WILL PUSH ACROSS THE AREA SPREADING SHOWERS AND ISOLATED THUNDERSTORMS EAST OF THE DIVIDE WITH SNOW LEVELS LOWERING TO THE VALLEY FLOORS IN THE WEST. PRECIPITATION LOOKS TO BE MAINLY RAIN OR A RAIN/SNOW MIX ACROSS THE CENTRAL BASINS THROUGH THE DAY. THURSDAY AND FRIDAY...FORECAST MAINTAINS CHANCES OF MOUNTAIN SNOW SHOWERS WITH SLIGHT CHANCES OF RAIN/SNOW SHOWERS IN THE VALLEYS AND BASINS DURING THIS PERIOD WITH UNCERTAINTY ON HOW FAST THIS TROUGH WILL EXIT AND THE NEXT ONE ARRIVES. && .AVIATION.../18Z ISSUANCE/ A STORM SYSTEM AND ASSOCIATED COLD FRONT PASSING THROUGH THE COWBOY STATE WILL RESULT IN SCATTERED TO LOCALLY NUMEROUS MOUNTAIN SNOW/VALLEY RAIN SHOWERS...MAINLY ALONG AND NORTHWEST OF A KAFO...KPNA...KDUB...KCOD LINE THROUGH THIS AFTERNOON. THE MOST NUMEROUS RAIN AND SNOW SHOWERS WILL BE IN THE WEST THROUGH EARLY AFTERNOON WITH MORE ISOLATED COVERAGE EAST OF THE DIVIDE MAINLY LATER THIS AFTERNOON AND EARLY EVENING WITH ONLY A SMALL CHANCE OF A THUNDERSTORM EAST OF THE DIVIDE. MOUNTAIN OBSCURATIONS WILL BE PREVALENT WEST OF THE DIVIDE WITH THESE MOUNTAIN SNOW SHOWERS WITH SOME VALLEY MVFR AFFECTING KJAC THROUGH ABOUT 20Z. IT WILL BE WINDY IN MANY AREAS WITH POSSIBLE LLWS AT KLND AND KCOD. CONDITIONS WILL IMPROVE TONIGHT WITH JUST A FEW LINGERING MOUNTAIN SNOW SHOWERS. ANOTHER SYSTEM WILL AID IN AFTERNOON SHOWERS AND ISOLATED THUNDERSTORMS IN THE FAR SOUTH POSSIBLY AFFECTING KRKS SATURDAY AFTERNOON. && .FIRE WEATHER... TODAY...THE BASIN ZONES WILL CLIMB NEAR OR INTO THE LOWER 70S...AHEAD OF THE NEXT SPRING WEATHER SYSTEM DUE TO PUSH THROUGH THE FORECAST AREA THROUGH THE DAY. MOUNTAIN INDUCED RAIN/SNOW CHANCES WILL INCREASE THROUGH THE MORNING AND AFTERNOON HOURS... LASTING INTO THE EARLY EVENING. HOWEVER...NEW SNOWFALL ACCUMULATIONS LOOK TO REMAIN ON THE LOW SIDE WITH AN INCH OR TWO OF WET SNOW AT BEST. WINDS WILL ALSO PICK UP TO THE BREEZY CATEGORY ACROSS MOST OF THE FORECAST ZONES...WITH THE USUAL WIND PRONE AREAS OF THE SOUTHERN DISPATCH ZONES...MOUNTAIN RIDGE TOPS AND NORTHERN CODY FOOTHILLS POSSIBLY GETTING SOME ISOLATED HIGH WINDS. IN ADDITION...BY THIS AFTERNOON THERE WILL BE AN INCREASING CHANCES FOR GUSTY LIGHT SHOWERS AND PERHAPS AN ISOLATED THUNDERSTORM LASTING INTO THE EVENING PERIOD. SATURDAY...HIGH TEMPERATURES WILL BE SEASONAL...AND THE WINDS MORE TAME...WITH ISOLATED TO WIDELY SCATTERED CHANCES FOR SHOWERS OR AN ISOLATED THUNDERSTORM SUNDAY AFTERNOON...MAINLY EAST OF THE DIVIDE. && .RIW WATCHES/WARNINGS/ADVISORIES...NONE. && UPDATE...SKRBAC SHORT TERM...BRAUN LONG TERM...AEM AVIATION...WM FIRE WEATHER...BRAUN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 233 PM MDT FRI APR 18 2014 WYZ001>020-022>030-191200- ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST- BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS- EAST SWEETWATER COUNTY-FLAMING GORGE- GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS- NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN- NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS- ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES- SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN- SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY- TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN- UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN- WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST- YELLOWSTONE NATIONAL PARK- 233 PM MDT FRI APR 18 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT STRONG WEST WINDS WILL OCCUR IN MANY AREAS AS A COLD FRONT SWEEPS EAST ACROSS THE AREA INTO THE EARLY EVENING. EXPECT WEST WIND 25 TO 35 MPH WITH GUSTS OF 40 TO 50 MPH WITH LOCAL GUSTS OVER 55 MPH FOR A FEW HOURS THIS AFTERNOON. THE COLD FRONT WILL ALSO BE ACCOMPANIED BY A SLIGHT CHANCE OF A THUNDERSTORM...BUT MAINLY OVER THE EASTERN PART OF THE BIGHORN BASIN OVER TO JOHNSON COUNTY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SATURDAY...ISOLATED THUNDERSTORMS POSSIBLE NEAR AND SOUTH OF INTERSTATE 80. SUNDAY...ISOLATED THUNDERSTORMS POSSIBLE SOUTH OF A MEETEETSE TO CASPER LINE AND THE BIG HORN MOUNTAINS. TUESDAY...INCREASING RAIN SHOWERS AND THUNDERSTORMS IN THE WEST... VERY WARM AND WINDY CONDITIONS ACROSS THE CENTRAL AND SOUTH...MAY RESULT IN RAPID SNOWMELT AND SIGNIFICANT RISES IN CREEKS AND STREAMS. THESE WINDY AND WARM CONDITIONS IN THE CENTRAL AND SOUTH WILL ALSO RESULT IN AN ELEVATED FIRE DANGER. WEDNESDAY...SIGNIFICANT SNOW ACCUMULATIONS POSSIBLE IN THE NORTHERN AND WESTERN MOUNTAINS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. TEAM RIVERTON
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 945 AM MDT FRI APR 18 2014 WYZ019-020-022-182200- CASPER MOUNTAIN-GREEN MOUNTAINS AND RATTLESNAKE RANGE- NATRONA COUNTY LOWER ELEVATIONS- 945 AM MDT FRI APR 18 2014 SOUTHWEST WINDS WILL BE ON THE INCREASE ACROSS THE AREA TODAY AHEAD OF AN APPROACHING COLD FRONT. SOUTHWEST WINDS WILL INCREASE TO SPEEDS OF 25 TO 35 MPH WITH GUSTS OF 45 TO 55 MPH TODAY WITH LOCALIZED GUSTS AROUND 60 MPH IN FAVORED LOCATIONS. AN AUTOMATED SENSOR ALONG OUTER DRIVE IN CASPER WAS ALREADY SHOWING WIND GUSTS AROUND 50 MPH AS OF 930 AM THIS MORNING. TRAVELLERS AND OTHERS WITH WIND CONCERNS SHOULD JUST BE ALERT AND PREPARED FOR INCREASING SOUTHWEST WINDS THROUGH THE DAY...PEAKING LATER THIS AFTERNOON. WYZ015-018-182200- LANDER FOOTHILLS-WIND RIVER MOUNTAINS EAST- 945 AM MDT FRI APR 18 2014 VERY STRONG WEST TO SOUTHWEST WINDS WILL CONTINUE THROUGH THIS AFTERNOON ALONG THE EAST SLOPE OF THE WIND RIVER MOUNTAINS AND AT TIMES THIS AFTERNOON IN THE LANDER FOOTHILLS. AN AUTOMATED SENSOR ALONG SOUTH PASS NEAR RED CANYON WAS ALREADY REPORTING WIND GUSTS AROUND 60 MPH AT 930 AM THIS MORNING. EXPECT CONTINUED WEST TO SOUTHWEST WIND 30 TO 40 MPH TODAY WITH GUSTS OF 55 TO 65 MPH IN THE FOOTHILLS AND OVER THE EAST SIDE OF SOUTH PASS. WIND GUSTS OF 40 TO 50 MPH WILL LIKELY MAKE IT INTO THE LANDER FOOTHILLS AT TIMES THIS AFTERNOON. TRAVELLERS SHOULD BE ALERT AND PREPARED TO ENCOUNTER VERY STRONG AND ERRATIC WINDS THROUGH THIS AFTERNOON. SKRBAC
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 1118 AM MDT FRI APR 18 2014 WYZ019-020-022-182200- CASPER MOUNTAIN-GREEN MOUNTAINS AND RATTLESNAKE RANGE- NATRONA COUNTY LOWER ELEVATIONS- 1118 AM MDT FRI APR 18 2014 SOUTHWEST WINDS WILL BE ON THE INCREASE ACROSS THE AREA TODAY AHEAD OF AN APPROACHING COLD FRONT. SOUTHWEST WINDS OF 25 TO 35 MPH WITH GUSTS OF 45 TO 55 MPH TODAY WITH LOCALIZED GUSTS AROUND 60 MPH IN FAVORED LOCATIONS. AN AUTOMATED SENSOR ALONG OUTER DRIVE IN CASPER HAS BEEN REPORTING WIND GUSTS OF 40 TO 50 MPH MOST OF THE MORNING. TRAVELLERS AND OTHERS WITH WIND CONCERNS SHOULD JUST BE ALERT AND PREPARED FOR INCREASING SOUTHWEST WINDS THROUGH THE DAY...PEAKING LATER THIS AFTERNOON. WYZ015-018-182200- LANDER FOOTHILLS-WIND RIVER MOUNTAINS EAST- 1118 AM MDT FRI APR 18 2014 VERY STRONG WEST TO SOUTHWEST WINDS WILL CONTINUE THROUGH THIS AFTERNOON ALONG THE EAST SLOPE OF THE WIND RIVER MOUNTAINS AND AT TIMES THIS AFTERNOON IN THE LANDER FOOTHILLS. AN AUTOMATED SENSOR ALONG SOUTH PASS NEAR RED CANYON HAS BEEN REPORTING WIND GUSTS OF 50 TO 60 MPH THIS MORNING. EXPECT CONTINUED WEST TO SOUTHWEST WIND 30 TO 40 MPH TODAY WITH GUSTS OF 55 TO 65 MPH IN THE FOOTHILLS AND OVER THE EAST SIDE OF SOUTH PASS. WIND GUSTS OF 40 TO 50 MPH WILL LIKELY MAKE IT INTO THE LANDER FOOTHILLS AT TIMES THROUGH THE AFTERNOON HOURS. TRAVELLERS SHOULD BE ALERT AND PREPARED TO ENCOUNTER VERY STRONG AND ERRATIC WINDS THROUGH THIS AFTERNOON. SKRBAC
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 109 PM MDT FRI APR 18 2014 WYZ019-020-022-182300- CASPER MOUNTAIN-GREEN MOUNTAINS AND RATTLESNAKE RANGE- NATRONA COUNTY LOWER ELEVATIONS- 109 PM MDT FRI APR 18 2014 SOUTHWEST WINDS WILL CONTINUE THIS AFTERNOON AS A COLD FRONT MOVES EAST ACROSS THE AREA. SOUTHWEST WINDS OF 30 TO 40 MPH WITH GUSTS OF 50 TO 55 MPH TODAY WITH LOCALIZED GUSTS AROUND 60 MPH IN FAVORED LOCATIONS. TRAVELLERS AND OTHERS WITH WIND CONCERNS SHOULD JUST BE ALERT AND PREPARED FOR CONTINUED STRONG SOUTHWEST WINDS...PEAKING LATER THIS AFTERNOON. THE WYOMING DEPARTMENT OF TRANSPORTATION ADVISES NO LIGHT TRAILER TRAFFIC DUE TO WIND SPEEDS ABOVE 50 MPH BETWEEN CASPER AND SHOSHONI. WYZ015-018-182300- LANDER FOOTHILLS-WIND RIVER MOUNTAINS EAST- 109 PM MDT FRI APR 18 2014 VERY STRONG WEST TO SOUTHWEST WINDS WILL CONTINUE THROUGH THIS AFTERNOON ALONG THE EAST SLOPE OF THE WIND RIVER MOUNTAINS AND AT TIMES THIS AFTERNOON IN THE LANDER FOOTHILLS. AN AUTOMATED SENSOR ALONG SOUTH PASS NEAR RED CANYON HAS BEEN REPORTING WIND GUSTS OF 50 TO 60 MPH THROUGH THE DAY. EXPECT CONTINUED WEST TO SOUTHWEST WIND 30 TO 40 MPH TODAY WITH GUSTS OF 55 TO 65 MPH IN THE FOOTHILLS AND OVER THE EAST SIDE OF SOUTH PASS. WIND GUSTS OF 45 TO 55 MPH WILL WILL ALSO CONTINUE IN THE LANDER FOOTHILLS THROUGH THE AFTERNOON. TRAVELLERS SHOULD BE ALERT AND PREPARED TO ENCOUNTER VERY STRONG AND ERRATIC WINDS THROUGH THIS AFTERNOON. THE WYOMING DEPARTMENT OF TRANSPORTATION ADVISES NO LIGHT TRAILER TRAFFIC DUE TO WIND SPEEDS ABOVE 50 MPH OVER SOUTH PASS. WYZ017-182300- WIND RIVER BASIN- 109 PM MDT FRI APR 18 2014 STRONG WEST TO SOUTHWEST WINDS WILL BECOME MORE WIDESPREAD ACROSS THE WIND RIVER BASIN AS THE AFTERNOON WEARS ON DUE TO AN APPROACHING COLD FRONT. RESIDENTS AND TRAVELLERS CAN EXPECT WEST TO SOUTHWEST WINDS 25 TO 35 MPH WITH GUSTS OF 40 TO 50 MPH THROUGH THE AFTERNOON INCLUDING THE RIVERTON AREA. SKRBAC
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 147 PM MDT FRI APR 18 2014 WYZ019-020-022-182300- CASPER MOUNTAIN-GREEN MOUNTAINS AND RATTLESNAKE RANGE- NATRONA COUNTY LOWER ELEVATIONS- 147 PM MDT FRI APR 18 2014 SOUTHWEST WINDS WILL CONTINUE THIS AFTERNOON AS A COLD FRONT MOVES EAST ACROSS THE AREA. SOUTHWEST WINDS OF 30 TO 40 MPH WITH GUSTS OF 50 TO 55 MPH TODAY WITH LOCALIZED GUSTS AROUND 60 MPH IN FAVORED LOCATIONS. TRAVELLERS AND OTHERS WITH WIND CONCERNS SHOULD JUST BE ALERT AND PREPARED FOR CONTINUED STRONG SOUTHWEST WINDS...PEAKING LATER THIS AFTERNOON. THE WYOMING DEPARTMENT OF TRANSPORTATION ADVISES NO LIGHT TRAILER TRAFFIC DUE TO WIND SPEEDS ABOVE 50 MPH ON HIGHWAY 20 26 BETWEEN CASPER AND SHOSHONI AND ALONG INTERSTATE 25 THROUGH NATRONA COUNTY. WYZ015-018-182300- LANDER FOOTHILLS-WIND RIVER MOUNTAINS EAST- 147 PM MDT FRI APR 18 2014 VERY STRONG WEST TO SOUTHWEST WINDS WILL CONTINUE THROUGH THIS AFTERNOON ALONG THE EAST SLOPE OF THE WIND RIVER MOUNTAINS AND AT TIMES THIS AFTERNOON IN THE LANDER FOOTHILLS. AN AUTOMATED SENSOR ALONG SOUTH PASS NEAR RED CANYON HAS BEEN REPORTING WIND GUSTS OF 50 TO 60 MPH THROUGH THE DAY. EXPECT CONTINUED WEST TO SOUTHWEST WIND 30 TO 40 MPH TODAY WITH GUSTS OF 55 TO 65 MPH IN THE FOOTHILLS AND OVER THE EAST SIDE OF SOUTH PASS. WIND GUSTS OF 45 TO 55 MPH WILL WILL ALSO CONTINUE IN THE LANDER FOOTHILLS THROUGH THE AFTERNOON. TRAVELLERS SHOULD BE ALERT AND PREPARED TO ENCOUNTER VERY STRONG AND ERRATIC WINDS THROUGH THIS AFTERNOON. THE WYOMING DEPARTMENT OF TRANSPORTATION ADVISES NO LIGHT TRAILER TRAFFIC DUE TO WIND SPEEDS ABOVE 50 MPH OVER SOUTH PASS. WYZ017-182300- WIND RIVER BASIN- 147 PM MDT FRI APR 18 2014 STRONG WEST TO SOUTHWEST WINDS WILL BECOME MORE WIDESPREAD ACROSS THE WIND RIVER BASIN AS THE AFTERNOON WEARS ON DUE TO AN APPROACHING COLD FRONT. RESIDENTS AND TRAVELLERS CAN EXPECT WEST TO SOUTHWEST WINDS 25 TO 35 MPH WITH GUSTS OF 40 TO 50 MPH THROUGH THE AFTERNOON INCLUDING THE RIVERTON AREA. SKRBAC
The national radar mosaic for the moment the first event began.
2 high wind. Local standard time, as filed.
Several wind gusts past 58 mph were recorded 5 miles WNW of Clark including a maximum of 76 mph. In addition, a gust to 58 mph was recorded at Meeteetse.
The ASOS at Hunt Field in Lander registered a wind gust of 61 mph. A mesonet sensor in the Lander Foothills on the North Fork of the Popo Agie River measured multiple gusts of 59 mph.
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, April 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 2026-09-24. Each event’s entry at NCEI: 506367, 506364.