Unstable northwest flow over western Wyoming formed a convective snow band that dropped heavy snow over portions of the Star Valley, particularly the north half of the valley. Snowfall totals of 7 to 9 inches were common around Thayne and Star Valley Ranch.
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 RIW wrote it up.
Unstable northwest flow over western Wyoming formed a convective snow band that dropped heavy snow over portions of the Star Valley, particularly the north half of the valley. Snowfall totals of 7 to 9 inches were common around Thayne and Star Valley Ranch. Meanwhile, south of the band only light snow fell, with Afton receiving just over an inch of new snow.
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 Mar 16, 12:48 PM MST, 3 hours 12 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 148 PM MDT WED MAR 16 2016 .SHORT TERM...TONIGHT THROUGH THURSDAY MOIST CYCLONIC...AND SOMEWHAT UNSTABLE...NORTHWEST FLOW WILL CONTINUE TO PRODUCE OROGRAPHIC SNOW SHOWERS OVER THE WESTERN AND NORTHERN MOUNTAINS TONIGHT AND THURSDAY. SOME SNOW WILL REACH THE VALLEY BOTTOMS...WHILE ACCUMULATIONS WILL REMAIN ELEVATION DEPENDENT. SHOWERS WILL INCREASE THURSDAY AND SPREAD EAST ACROSS THE AREA. TEMPERATURES WILL REMAIN ON THE COOL SIDE. THROUGH THE AFTERNOON LOW LEVEL NORTHEAST FLOW WILL DEVELOP INCREASING THE CHANCE OF RAIN AND SNOW SHOWERS ALONG THE NORTH AND EAST SLOPES OF THE MOUNTAINS...INCLUDING CODY...BUFFALO...THERMOPOLIS...CASPER AND LANDER. .LONG TERM...THURSDAY NIGHT THROUGH WEDNESDAY BEGINNING OF FCST...STILL UNDER THE INFLUENCE OF A LARGE TROF SLOWLY TRYING TO EXIT THE WEST. A BACKSIDE JET AND SUBSTANTIAL VORTICITY RIDING ALONG THE NRN PORTION OF THE JET WILL BE MOVING ACROSS THE FA. JUST UPSTREAM...RIDGING OVR THE WCST...POISED TO MOVE ACROSS WY BY SATURDAY. SFC SHOWS VIGOROUS COLD FRONT THRU THE REGION E OF THE DIVIDE...WITH MUCH OF SCNTRL AND SWRN WY PRE-FRONTAL AND WAITING FOR THE FRONT TO GET THRU OVERNIGHT. MOST OF THE ONGOING PRECIP WILL ALIGNED WITH THE BEST OVERALL DEEP FORCING...AND ALONG AND BEHIND THE SFC FRONT. AREAS ALONG/NEAR THE FRONT AND THOSE WHERE UPSLOPE FORCING WILL BE BEST...OFTEN CO- ALIGNED IN THIS CASE...INCLUDING THE WIND RIVER...ABSAROKA...AND GREEN MOUNTAIN RANGES AS WELL AS THE REGION ADJACENT TO THESE MOUNTAINS...WILL SEE THE GREATEST CHCS FOR PRECIP AS WELL AS HIGHEST QPF AND SNOWFALL ACCUM. ATTM...BEST TOTAL SNOWFALL FROM THU AFTERNOON THRU THE DAY FRIDAY LOOKS TO REMAIN BELOW ADVISORY LEVEL AT AROUND 6 INCHES OR LESS FOR MOST MOUNTAIN LOCATIONS AND AOB 3 INCHES FOR THE LOWER ELEVATIONS. WILL MONITOR FOR POSSIBLE HIGHLIGHTS ACROSS THE LOWER ELEVATIONS WITH THIS SYSTEM...ESPECIALLY FOR THE FOOTHILL LOCATIONS. FRIDAY NIGHT...THE TROF AND JET FINALLY BEGIN TO EXIT THE REGION WITH RIDGING LIFTING IN FROM THE WEST AND SFC HIGH P BUILDING IN FROM THE NORTH. OTHER THAN LINGERING/DECREASING SHOWER ACTIVITY OVR THE CNTRL AND SRN MOUNTAINS IN ADDITION TO THE BIGHORNS...PRECIP WILL END WITH WARMING AND DRYING TAKING PLACE. FIRE DANGER CONCERNS WILL ONCE AGAIN BE ENHANCED BY MONDAY...AS THE UPR/LOWER LVLS TRANSITION TO SW FLOW AND THE P GRAD TIGHTENS AHEAD OF THE NEXT PAC SYSTEM DUE TO BEGIN TO IMPACT THE WRN CWA MONDAY MORNING. HIGH WIND WARNINGS WILL BE LIKELY FOR PORTIONS OF THE CODY FOOTHILLS SUNDAY NIGHT INTO MONDAY...WITH A WAIT AND SEE SCENARIO ACROSS THE WIND CORRIDOR. SO FAR...THE MR MDLS ARE IN DECENT AGREEMENT THRU TUESDAY...ALL BEGINNING PRECIP ACROSS THE WRN MOUNTAINS BY MON AFTERNOON AND REALLY CONTINUING THRU THE END OF THE FCST IN ONE FASHION OR ANOTHER. MAX PRECIP/SNOW POTENTIAL OUT WEST LOOKS TO ARRIVE TUE NIGHT...AND CONTINUING THRU WED MORNING...AS THE UPR SW TROF AXIS PASSES THRU. POSSIBLE ADVISORY/WARNING CRITERIA WILL BE POSSIBLE IN THE WRN MOUNTAINS DURING THAT PERIOD. ADDITIONALLY...LOCATIONS E OF THE DIVIDE WILL ALSO SEE THEIR BEST SHOT AT PRECIP DURING THIS TIME FRAME...WITH RAIN SHOWERS AND ISOLATED THUNDER E OF THE DIVIDE A POSSIBILITY WED AFTERNOON. && .AVIATION.../00Z ISSUANCE/ WEST OF THE CONTINENTAL DIVIDE...KJAC/KRKS/KPNA/KBPI ROUTES MOIST NORTHWEST FLOW CONTINUES THROUGH THE PERIOD WITH SCATTERED TO WIDESPREAD SNOW SHOWERS THROUGH THE PERIOD ESPECIALLY OVER THE WESTERN MOUNTAINS AND VALLEYS. PEAK HEATING WILL RESULT IN AN INCREASE IN ACTIVITY THIS AFTERNOON...BUT A DISTURBANCE IN THE NORTHWEST FLOW SHOULD EXPAND THE COVERAGE/INTENSITY TONIGHT. KJAC AND KAFO WILL SEE MVFR/IFR CONDITIONS THROUGH THE PERIOD WITH OCCASIONAL MVFR CONDITIONS POSSIBLE AT KBPI...KPNA AND KEMM. WESTERN MOUNTAINS WILL BE OBSCURED MUCH OF THE TIME. NORTHWEST WIND WILL INCREASE IN MOST LOCATIONS...WITH THE USUAL SOUTH TO SOUTHWEST WIND IN JACKSON HOLE. EAST OF THE CONTINENTAL DIVIDE...KCPR/KCOD/KRIW/KWRL/KLND ROUTES IN A MOIST NORTHWEST FLOW...SCATTERED...LOCALLY WIDESPREAD SNOW SHOWERS ARE EXPECTED OVER AND NEAR THE MOUNTAINS. WILL KEEP TAF SITES KRIW...AND KWRL DRY FOR NOW. INCREASING CLOUDINESS IS EXPECTED OVERNIGHT AS ANOTHER DISTURBANCE BEGINS TO IMPACT THE AREA...BUT THE MAIN IMPACT WILL OCCUR AFTER 18Z MVFR CONDITIONS MAY DEVELOP AT KCOD...KPOY...KGEY...KCPR...KLND AND KBYG THURSDAY 18Z TO 00Z AS NORTHEAST UPSLOPE FLOW DEVELOPS. && .FIRE WEATHER... MOIST CYCLONIC...AND SOMEWHAT UNSTABLE...NORTHWEST FLOW WILL CONTINUE TO PRODUCE OROGRAPHIC SNOW SHOWERS OVER THE WESTERN AND NORTHERN MOUNTAINS TONIGHT AND THURSDAY. SOME SNOW WILL REACH THE VALLEY BOTTOMS...WHILE ACCUMULATIONS WILL REMAIN ELEVATION DEPENDENT. SHOWERS WILL INCREASE THURSDAY AND SPREAD EAST ACROSS THE AREA. TEMPERATURES WILL REMAIN ON THE COOL SIDE. THROUGH THE AFTERNOON LOW LEVEL NORTHEAST FLOW WILL DEVELOP INCREASING THE CHANCE OF RAIN AND SNOW SHOWERS ALONG THE NORTH AND EAST SLOPES OF THE MOUNTAINS...INCLUDING CODY...BUFFALO...THERMOPOLIS...CASPER AND LANDER. MIXING HEIGHTS WILL LIFT THURSDAY AFTERNOON WITH GOOD SMOKE DISPERSAL IN THE EAST BUT REMAINING POOR IN THE WEST WITH DENSER CLOUD COVER. && .RIW WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...C.BAKER LONG TERM...BRAUN AVIATION...C.BAKER FIRE WEATHER...C.BAKER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 414 AM MDT WED MAR 16 2016 WYZ001>020-022>030-171015- YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS-CODY FOOTHILLS- NORTH BIG HORN BASIN-SOUTHWEST BIG HORN BASIN- SOUTHEAST BIG HORN BASIN-OWL CREEK AND BRIDGER MOUNTAINS- BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST- NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY- TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE- WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST- UPPER WIND RIVER BASIN-WIND RIVER BASIN-LANDER FOOTHILLS- GREEN MOUNTAINS AND RATTLESNAKE RANGE- NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN-STAR VALLEY- SALT RIVER AND WYOMING RANGES-UPPER GREEN RIVER BASIN FOOTHILLS- UPPER GREEN RIVER BASIN-SOUTH LINCOLN COUNTY- ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY- 414 AM MDT WED MAR 16 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT CONTINUED LIGHT SNOWFALL COULD CREATE HAZARDOUS TRAVEL OVER WESTERN MOUNTAIN PASSES TODAY AND THROUGH THIS EVENING. MOTORISTS SHOULD USE CAUTION AND MONITOR ROAD CONDITIONS BEFORE TRAVELING. ADDITIONALLY...GUSTY WIND WILL DEVELOP AGAIN ACROSS THE AREA. THE STRONGEST WIND LOOKS TO IMPACT SWEETWATER COUNTY AND INTO FREMONT COUNTY. THOSE WITH PLANS TO CONDUCT AGRICULTURAL BURNING SHOULD INVESTIGATE ALTERNATIVE DAYS AND KEEP AN EYE ON THE FORECAST. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THURSDAY AND FRIDAY...A STRONGER MOISTURE PUSH WILL IMPACT THE AREA LATE THURSDAY AFTERNOON. SNOWFALL LOOKS FAVORABLE TO IMPACT AREAS EAST OF THE CONTINENTAL DIVIDE. SNOWFALL LOOKS TO BE GENERALLY LIGHT...THOUGH PERIODS OF MODERATE SNOWFALL ARE POSSIBLE THROUGH FRIDAY MORNING. TUESDAY NIGHT AND WEDNESDAY...POTENTIAL SNOW EAST OF THE DIVIDE. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT SNOW AMOUNTS AND WIND GUSTS OF 45 MPH OR GREATER. THANK YOU. TEAM RIVERTON
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 200 PM MDT WED MAR 16 2016 WYZ003-170900- CODY FOOTHILLS- INCLUDING THE CITIES OF...CODY...MEETEETSE 200 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL MOVE THROUGH THE CODY FOOTHILLS DURING THE DAY THURSDAY WITH WINDS COMING AROUND TO THE NORTH TO NORTHEAST AND LIGHT SNOW BEGINNING BY MID-DAY. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE THURSDAY EVENING...TAPERING OFF AFTER MIDNIGHT. TOTAL SNOWFALL ACCUMULATION THROUGH FRIDAY MORNING IS EXPECTED TO BE IN THE 1 TO 2 INCH RANGE WITH A FEWS AREAS IN THE UPPER REACHES OF THE FOOTHILLS SEEING PERHAPS UP TO 4 INCHES. WYZ016>019-170900- UPPER WIND RIVER BASIN-WIND RIVER BASIN-LANDER FOOTHILLS- GREEN MOUNTAINS AND RATTLESNAKE RANGE- INCLUDING THE CITIES OF...DUBOIS...RIVERTON...SHOSHONI...LANDER... JEFFREY CITY 200 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL MOVE THROUGH THE WIND RIVER BASIN...LANDER FOOTHILLS AND THE GREEN AND RATTLESNAKE MOUNTAINS DURING THURSDAY AFTERNOON WITH WINDS COMING AROUND TO THE NORTH TO NORTHEAST AND LIGHT SNOW BEGINNING BY MID AFTERNOON. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE THURSDAY EVENING...AND CONTINUE UNTIL FRIDAY MORNING BEFORE TAPERING OFF. TOTAL SNOWFALL ACCUMULATION THROUGH THE DAY FRIDAY IS EXPECTED TO BE IN THE 1 TO 3 INCH RANGE WITH A FEWS AREAS IN THE HIGHER REACHES OF THE FOOTHILLS AND MOUNTAINS SEEING PERHAPS 4 INCHES. WYZ010-011-020-022-170900- NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY- NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN- INCLUDING THE CITIES OF...BUFFALO...KAYCEE...CASPER 200 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL BEGIN TO MOVE THROUGH JOHNSON COUNTY LATE THURSDAY MORNING...ARRIVING OVER NATRONA COUNTY BY MID DAY WITH WINDS COMING AROUND TO THE NORTH TO NORTHEAST AND LIGHT SNOW BEGINNING WITH THE FRONT. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE LATE THURSDAY AFTERNOON ACROSS JOHNSON COUNTY...THEN THURSDAY EVENING ACROSS NATRONA COUNTY...CONTINUING OVERNIGHT BEFORE TAPERING OFF FRIDAY MORNING. TOTAL SNOWFALL ACCUMULATION THROUGH THE DAY FRIDAY IS EXPECTED TO BE IN THE 1 TO 3 INCH RANGE WITH A FEWS AREAS IN THE UPPER REACHES OF THE FOOTHILLS AND MOUNTAINS SEEING PERHAPS UP TO 4 INCHES. WYZ008-009-170900- BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST- 200 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL MOVE THROUGH THE BIGHORN MOUNTAINS THURSDAY MORNING WITH WINDS COMING AROUND TO THE NORTH TO NORTHEAST AND LIGHT SNOW BEGINNING. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE THURSDAY AFTERNOON AND EVENING...TAPERING OFF AFTER MIDNIGHT. TOTAL SNOWFALL ACCUMULATION THROUGH FRIDAY MORNING IS EXPECTED TO BE IN THE 3 TO 6 INCH RANGE WITH A FEWS AREAS IN THE HIGHER REACHES OF THE MOUNTAINS SEEING PERHAPS UP TO 7 INCHES. WYZ002-170900- ABSAROKA MOUNTAINS- 200 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL MOVE THROUGH THE ABSAROKA MOUNTAINS THURSDAY MORNING WITH WINDS COMING AROUND TO THE NORTH AND LIGHT SNOW CONTINUING. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE THURSDAY AFTERNOON AND EVENING...TAPERING OFF AFTER MIDNIGHT. TOTAL SNOWFALL ACCUMULATION THROUGH FRIDAY MORNING IS EXPECTED TO BE IN THE 2 TO 5 INCH RANGE WITH A FEWS AREAS IN THE HIGHER REACHES OF THE MOUNTAINS SEEING PERHAPS UP TO 6 INCHES.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 240 PM MDT WED MAR 16 2016 WYZ003-170900- CODY FOOTHILLS- INCLUDING THE CITIES OF...CODY...MEETEETSE 240 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL MOVE THROUGH THE CODY FOOTHILLS DURING THE DAY THURSDAY WITH WINDS COMING AROUND TO THE NORTH TO NORTHEAST AND LIGHT SNOW BEGINNING BY MID-DAY. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE THURSDAY EVENING...TAPERING OFF AFTER MIDNIGHT. TOTAL SNOWFALL ACCUMULATION THROUGH FRIDAY MORNING IS EXPECTED TO BE IN THE 1 TO 2 INCH RANGE WITH A FEW AREAS IN THE UPPER REACHES OF THE FOOTHILLS SEEING PERHAPS UP TO 4 INCHES. WYZ016>019-170900- UPPER WIND RIVER BASIN-WIND RIVER BASIN-LANDER FOOTHILLS- GREEN MOUNTAINS AND RATTLESNAKE RANGE- INCLUDING THE CITIES OF...DUBOIS...RIVERTON...SHOSHONI...LANDER... JEFFREY CITY 240 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL MOVE THROUGH THE WIND RIVER BASIN...LANDER FOOTHILLS AND THE GREEN AND RATTLESNAKE MOUNTAINS DURING THURSDAY AFTERNOON WITH WINDS COMING AROUND TO THE NORTH TO NORTHEAST AND LIGHT SNOW BEGINNING BY MID AFTERNOON. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE THURSDAY EVENING...AND CONTINUE UNTIL FRIDAY MORNING BEFORE TAPERING OFF. TOTAL SNOWFALL ACCUMULATION THROUGH THE DAY FRIDAY IS EXPECTED TO BE IN THE 1 TO 3 INCH RANGE WITH A FEW AREAS IN THE HIGHER REACHES OF THE FOOTHILLS AND MOUNTAINS SEEING PERHAPS 4 INCHES. WYZ010-011-020-022-170900- NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY- NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN- INCLUDING THE CITIES OF...BUFFALO...KAYCEE...CASPER 240 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL BEGIN TO MOVE THROUGH JOHNSON COUNTY LATE THURSDAY MORNING...ARRIVING OVER NATRONA COUNTY BY MID DAY WITH WINDS COMING AROUND TO THE NORTH TO NORTHEAST AND LIGHT SNOW BEGINNING WITH THE FRONT. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE LATE THURSDAY AFTERNOON ACROSS JOHNSON COUNTY...THEN THURSDAY EVENING ACROSS NATRONA COUNTY...CONTINUING OVERNIGHT BEFORE TAPERING OFF FRIDAY MORNING. TOTAL SNOWFALL ACCUMULATION THROUGH THE DAY FRIDAY IS EXPECTED TO BE IN THE 1 TO 3 INCH RANGE WITH A FEW AREAS IN THE UPPER REACHES OF THE FOOTHILLS AND MOUNTAINS SEEING PERHAPS UP TO 4 INCHES. WYZ008-009-170900- BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST- 240 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL MOVE THROUGH THE BIGHORN MOUNTAINS THURSDAY MORNING WITH WINDS COMING AROUND TO THE NORTH TO NORTHEAST AND LIGHT SNOW BEGINNING. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE THURSDAY AFTERNOON AND EVENING...TAPERING OFF AFTER MIDNIGHT. TOTAL SNOWFALL ACCUMULATION THROUGH FRIDAY MORNING IS EXPECTED TO BE IN THE 3 TO 6 INCH RANGE WITH A FEW AREAS IN THE HIGHER REACHES OF THE MOUNTAINS SEEING PERHAPS UP TO 7 INCHES. WYZ002-170900- ABSAROKA MOUNTAINS- 240 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL MOVE THROUGH THE ABSAROKA MOUNTAINS THURSDAY MORNING WITH WINDS COMING AROUND TO THE NORTH AND LIGHT SNOW CONTINUING. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE THURSDAY AFTERNOON AND EVENING...TAPERING OFF AFTER MIDNIGHT. TOTAL SNOWFALL ACCUMULATION THROUGH FRIDAY MORNING IS EXPECTED TO BE IN THE 2 TO 5 INCH RANGE WITH A FEW AREAS IN THE HIGHER REACHES OF THE MOUNTAINS SEEING PERHAPS UP TO 6 INCHES. WYZ012-170900- TETON AND GROS VENTRE MOUNTAINS- 240 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE WILL BEGIN TO AFFECT THE TETON AND GROSS VENTRE MOUNTAINS LATE THIS AFTERNOON THROUGH THIS EVENING WITH ISOLATED LIGHT SNOW INCREASING IN COVERAGE. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE THIS EVENING...TAPERING OFF THURSDAY MORNING. TOTAL SNOWFALL ACCUMULATION THROUGH THURSDAY MORNING IS EXPECTED TO BE IN THE 4 TO 7 INCH RANGE WITH A FEW AREAS IN THE HIGHER REACHES OF THE MOUNTAINS SEEING PERHAPS UP TO 8 INCHES.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 246 PM MDT WED MAR 16 2016 WYZ003-170900- CODY FOOTHILLS- INCLUDING THE CITIES OF...CODY...MEETEETSE 246 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL MOVE THROUGH THE CODY FOOTHILLS DURING THE DAY THURSDAY WITH WINDS COMING AROUND TO THE NORTH TO NORTHEAST AND LIGHT SNOW BEGINNING BY MID-DAY. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE THURSDAY EVENING...TAPERING OFF AFTER MIDNIGHT. TOTAL SNOWFALL ACCUMULATION THROUGH FRIDAY MORNING IS EXPECTED TO BE IN THE 1 TO 2 INCH RANGE WITH A FEW AREAS IN THE UPPER REACHES OF THE FOOTHILLS SEEING PERHAPS UP TO 4 INCHES. WYZ016>019-170900- UPPER WIND RIVER BASIN-WIND RIVER BASIN-LANDER FOOTHILLS- GREEN MOUNTAINS AND RATTLESNAKE RANGE- INCLUDING THE CITIES OF...DUBOIS...RIVERTON...SHOSHONI...LANDER... JEFFREY CITY 246 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL MOVE THROUGH THE WIND RIVER BASIN...LANDER FOOTHILLS AND THE GREEN AND RATTLESNAKE MOUNTAINS DURING THURSDAY AFTERNOON WITH WINDS COMING AROUND TO THE NORTH TO NORTHEAST AND LIGHT SNOW BEGINNING BY MID AFTERNOON. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE THURSDAY EVENING...AND CONTINUE UNTIL FRIDAY MORNING BEFORE TAPERING OFF. TOTAL SNOWFALL ACCUMULATION THROUGH THE DAY FRIDAY IS EXPECTED TO BE IN THE 1 TO 3 INCH RANGE WITH A FEW AREAS IN THE HIGHER REACHES OF THE FOOTHILLS AND MOUNTAINS SEEING PERHAPS 4 INCHES. WYZ010-011-020-022-170900- NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY- NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN- INCLUDING THE CITIES OF...BUFFALO...KAYCEE...CASPER 246 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL BEGIN TO MOVE THROUGH JOHNSON COUNTY LATE THURSDAY MORNING...ARRIVING OVER NATRONA COUNTY BY MID DAY WITH WINDS COMING AROUND TO THE NORTH TO NORTHEAST AND LIGHT SNOW BEGINNING WITH THE FRONT. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE LATE THURSDAY AFTERNOON ACROSS JOHNSON COUNTY...THEN THURSDAY EVENING ACROSS NATRONA COUNTY...CONTINUING OVERNIGHT BEFORE TAPERING OFF FRIDAY MORNING. TOTAL SNOWFALL ACCUMULATION THROUGH THE DAY FRIDAY IS EXPECTED TO BE IN THE 1 TO 3 INCH RANGE WITH A FEW AREAS IN THE UPPER REACHES OF THE FOOTHILLS AND MOUNTAINS SEEING PERHAPS UP TO 4 INCHES. WYZ008-009-170900- BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST- 246 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL MOVE THROUGH THE BIGHORN MOUNTAINS THURSDAY MORNING WITH WINDS COMING AROUND TO THE NORTH TO NORTHEAST AND LIGHT SNOW BEGINNING. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE THURSDAY AFTERNOON AND EVENING...TAPERING OFF AFTER MIDNIGHT. TOTAL SNOWFALL ACCUMULATION THROUGH FRIDAY MORNING IS EXPECTED TO BE IN THE 3 TO 6 INCH RANGE WITH A FEW AREAS IN THE HIGHER REACHES OF THE MOUNTAINS SEEING PERHAPS UP TO 7 INCHES. WYZ002-170900- ABSAROKA MOUNTAINS- 246 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE AND ASSOCIATED COLD FRONT WILL MOVE THROUGH THE ABSAROKA MOUNTAINS THURSDAY MORNING WITH WINDS COMING AROUND TO THE NORTH AND LIGHT SNOW CONTINUING. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE THURSDAY AFTERNOON AND EVENING...TAPERING OFF AFTER MIDNIGHT. TOTAL SNOWFALL ACCUMULATION THROUGH FRIDAY MORNING IS EXPECTED TO BE IN THE 2 TO 5 INCH RANGE WITH A FEW AREAS IN THE HIGHER REACHES OF THE MOUNTAINS SEEING PERHAPS UP TO 6 INCHES. WYZ012-170900- TETON AND GROS VENTRE MOUNTAINS- 246 PM MDT WED MAR 16 2016 A STRONG UPPER LEVEL DISTURBANCE WILL BEGIN TO AFFECT THE TETON AND GROSS VENTRE MOUNTAINS LATE THIS AFTERNOON THROUGH THIS EVENING WITH ISOLATED LIGHT SNOW INCREASING IN COVERAGE. BEST CHANCES FOR ACCUMULATING SNOW WILL ARRIVE THIS EVENING...TAPERING OFF THURSDAY MORNING. TOTAL SNOWFALL ACCUMULATION THROUGH THURSDAY MORNING IS EXPECTED TO BE IN THE 4 TO 6 INCH RANGE WITH A FEW AREAS IN THE HIGHER REACHES OF THE MOUNTAINS SEEING PERHAPS UP TO 8 INCHES.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 458 PM MDT WED MAR 16 2016 WYZ012-013-170600- TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE- INCLUDING THE CITY OF...JACKSON 458 PM MDT WED MAR 16 2016 THROUGH MIDNIGHT...NUMEROUS SNOW SHOWERS WILL IMPACT JACKSON HOLE AND SURROUNDING MOUNTAINS. THE HEAVIEST SNOWFALL IS EXPECTED TO OCCUR THROUGH 9 PM. BY MIDNIGHT...EXPECT 1 TO 3 INCHES OF NEW SNOWFALL IN JACKSON HOLE...WITH 3 TO 8 INCHES IN THE MOUNTAINS. ROADS IN THE LOWER ELEVATIONS WILL INCREASINGLY BECOME SLICK AND HAZARDOUS THIS EVENING...WITH LOSS OF DAYTIME HEATING. TETON AND TOGWOTEE MOUNTAIN PASSES WILL BE SNOWPACKED AND SLICK. VISIBILITY WILL ONLY ABOUT A TENTH OF A MILE IN HEAVIER SNOW BURSTS ESPECIALLY IN THE MOUNTAINS. WYZ023-024-170600- STAR VALLEY-SALT RIVER AND WYOMING RANGES- INCLUDING THE CITIES OF...AFTON...ALPINE...STAR VALLEY RANCH... THAYNE 458 PM MDT WED MAR 16 2016 THROUGH MIDNIGHT...NUMEROUS SNOW SHOWERS WILL IMPACT STAR VALLEY AND SURROUNDING MOUNTAINS. THE HEAVIEST SNOWFALL IS EXPECTED TO OCCUR THROUGH 9 PM. BY MIDNIGHT...EXPECT 1 TO 3 INCHES OF NEW SNOWFALL ACROSS STAR VALLEY...WITH 3 TO 6 INCHES IN THE MOUNTAINS. ROADS IN THE LOWER ELEVATIONS WILL INCREASINGLY BECOME SLICK AND HAZARDOUS THIS EVENING...WITH LOSS OF DAYTIME HEATING. VISIBILITY WILL BE UNDER A QUARTER MILE IN HEAVIER SNOW BURSTS. WYZ025-170600- UPPER GREEN RIVER BASIN FOOTHILLS- INCLUDING THE CITY OF...PINEDALE 458 PM MDT WED MAR 16 2016 SCATTERED TO NUMEROUS SNOW SHOWERS WILL IMPACT THE UPPER GREEN RIVER BASIN THIS EVENING. 1 TO 3 INCHES OF SNOW IS EXPECTED WITH THE GREATEST AMOUNTS TOWARD BONDURANT. VISIBILITY IN SNOW SHOWERS WILL BE REDUCED TO UNDER A QUARTER MILE IN HEAVIER SNOW BURSTS. ROADS WILL INCREASINGLY BECOME SLICK AND HAZARDOUS WITH LOSS OF DAYTIME HEATING AND WITH ANY BURSTS OF SNOWFALL. WYZ027-170600- SOUTH LINCOLN COUNTY- INCLUDING THE CITIES OF...KEMMERER...COKEVILLE 458 PM MDT WED MAR 16 2016 SCATTERED SNOW SHOWERS WILL IMPACT SOUTHERN LINCOLN COUNTY THIS EVENING. 1 TO 2 INCHES COULD OCCUR IN THE COKEVILLE AREA...WHILE AN INCH OR LESS IS EXPECTED IN THE KEMMERER AREA. MOTORISTS SHOULD BE PREPARED FOR QUICKLY VARYING ROAD CONDITIONS THIS EVENING...AS WELL AS VISIBILITY BEING REDUCED TO UNDER A HALF MILE IN BURSTS OF HEAVIER SNOW. WYZ028>030-170600- ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY- INCLUDING THE CITIES OF...ROCK SPRINGS...GREEN RIVER...WAMSUTTER 458 PM MDT WED MAR 16 2016 SCATTERED SNOW SHOWERS WILL IMPACT SWEETWATER COUNTY THIS EVENING. AROUND 1 INCH OF SNOW COULD OCCUR IN SOME AREAS. MOTORISTS SHOULD BE PREPARED FOR QUICKLY VARYING ROAD CONDITIONS THIS EVENING...AS WELL AS VISIBILITY BEING REDUCED TO UNDER A HALF MILE IN BURSTS OF HEAVIER SNOW. WYZ026-170600- UPPER GREEN RIVER BASIN- INCLUDING THE CITIES OF...LA BARGE...BIG PINEY...FARSON 458 PM MDT WED MAR 16 2016 SCATTERED SNOW SHOWERS WILL IMPACT THE UPPER GREEN RIVER BASIN THIS EVENING. AROUND 1 INCH OF SNOW COULD ACCUMULATE BY MIDNIGHT...INCLUDING THE FARSON AND BIG PINEY AREAS. HEAVIER SNOW CAN BE EXPECTED IN THE PINEDALE AND BONDURANT AREAS WHERE 2 TO 3 INCHES COULD OCCUR. MOTORISTS SHOULD BE PREPARED FOR QUICKLY VARYING ROAD CONDITIONS THIS EVENING...AS WELL AS VISIBILITY BEING REDUCED TO UNDER A HALF MILE IN BURSTS OF HEAVIER SNOW. 21
The national radar mosaic for the moment the first event began.
1 heavy snow. Local standard time, as filed.
Snowfall of 7 to 9 inches fell around Thayne and Star Valley Ranch.
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, March 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: 615452.