WIND CHILLS: COULD FALL TO NEAR 30 BELOW FRIDAY AND SUNDAY. WIND CHILL COULD BE AS COLD AS 50 DEGREES BELOW ZERO SATURDAY.
THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER STORM WARNING FOR SNOW AND WIND IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 AM MST SUNDAY… FEB 27 2014
A MAJOR WINTER STORM IS EXPECTED TO BEGIN ACROSS THE WEST TONIGHT AND SPREAD TO CENTRAL WYOMING LATER TONIGHT INTO FRIDAY EVENING… AND THEN CONTINUE THROUGH SATURDAY NIGHT.
THE COMBINATION OF THREE STORMS SYSTEMS ARE EXPECTED TO FORM A HIGH IMPACT WINTER
STORM ACROSS THE AREA. THE WEST WILL BE IMPACTED FIRST AS THE FIRST WEATHER DISTURBANCE MOVES IN FROM THE WEST THIS EVENING.
AT THE SAME TIME…AN ARCTIC COLD FRONT WILL MOVE SOUTH INTO FAR NORTHERN WYOMING LATE TONIGHT AND WORK SOUTH INTO CENTRAL WYOMING DURING THE DAY FRIDAY. SNOW WILL DEVELOP BEHIND THIS SYSTEM ALSO.
A THIRD…MOIST AND POTENT STORM SYSTEM FRIDAY NIGHT AND SATURDAY WILL COMBINE WITH THIS ARCTIC AIR TO PRODUCE A POTENTIALLY MAJOR STORM SYSTEM ACROSS CENTRAL WYOMING WITH SNOW CONTINUING ELSEWHERE.
IN ADDITION…THE NORTH AND EAST WILL SEE TEMPERATURES DROP TO AROUND OR BELOW ZERO FRIDAY NIGHT AND THEN STRUGGLE TO GET ABOVE ZERO IN THE FAR NORTH AND SINGLE DIGITS TO LOWER TEENS FURTHER SOUTH ON SATURDAY.
TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE- INCLUDING THE CITY OF… JACKSON … GREAT FALLS… KINGS HILL PASS… CHOTEAU… STANFORD… LEWISTOWN… LEWISTOWN DIVIDE
* SUMMARY AND TIMING…SNOW WILL BEGIN QUICKLY THIS EVENING AS STORM NUMBER ONE ARRIVES. AN EVEN STRONGER SYSTEM WILL ARRIVE FRIDAY NIGHT AND CONTINUE SATURDAY INTO SATURDAY NIGHT.
* SNOW ACCUMULATIONS…8 TO 16 INCHES IN THE LOWER ELEVATIONS. 1 TO 2 FEET IN THE MOUNTAINS WITH 30 TO 36 INCHES IN FAVORED AREAS OF THE TETONS.
* WIND AND VISIBILITY…SOUTHWEST 20 TO 30 MPH WITH GUSTS TO 45 MPH. VISIBILITY UNDER ONE QUARTER MILE AT TIMES.
* IMPACTS…TRAVEL WILL BE SEVERELY HAMPERED BY THE SNOW AND WIND. ROADS WILL BECOME SLICK WITH PERIODS OF BLOWING AND DRIFTING SNOW.
http://forecast.weather.gov/wwamap/wwatxtget.php?cwa=usa&wwa=WinterStormWarning
Thanks to Kenneth Lund for this link