Heavy Snow in Utah, November 9 to 11, 2002

UTAH AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1030 AM MST SAT NOV 9 2002

.SYNOPSIS...A SERIES OF MOIST AND PROGRESSIVELY COLDER WEATHER
SYSTEMS WILL MOVE RAPIDLY ACROSS THE FORECAST AREA THROUGH MONDAY.

.DISCUSSION...VERY STRONG AND MOIST WESTERLIES TO REMAIN RELATIVELY
UNCHANGED FOR AT LEAST THE NEXT 24-30 HOURS.  A 150+ KNOT JET
SHOULD PUSH A SERIES OF EMBEDDED SHORTWAVES THROUGH THE WEST VERY
QUICKLY MAINTAINING THE THREAT FOR LOWER VALLEY RAIN AND MOUNTAINS
SNOW THROUGH SUNDAY.

IN THE SHORT TERM WE MAY BE LOOKING AT SOME DECREASE IN AREAL
COVERAGE OF PRECIP BETWEEN THE SHORTWAVE OVER ERN ID/NRN UT AND THE
NEXT WAVE JUST OFF THE NW CA/SW OREGON COAST.   THIS WAVE LIKE THOSE
BEFORE IT SHOWING SOME ORGANIZATION AS IT MOVES ONSHORE.  EXPECT
THAT HEAVY SNOW WILL AGAIN POUND THE NRN MOUNTAINS WITH THE VALLEYS
SEE RAIN AND/OR SNOW DEPENDING ON ELEVATION.

AMPLIFICATION OF THE TROUGH OVER THE CNTRL PACIFIC TONIGHT/SUNDAY
WILL LEAD TO BUILDING HEIGHTS OVER THE WRN STATES SUNDAY/MONDAY.
ONE LAST WAVE CRESTING THE BUILDING RIDGE WILL BRING A THREAT OF
PRECIP MONDAY...OTHERWISE STEADILY RISING HEIGHTS AND WARMING ALOFT
SHOULD END MOST PRECIP FOR MONDAY NIGHT/TUESDAY.  THE RIDGE WILL
REMAIN PROGRESSIVE...SO LOOK FOR MORE PACIFIC SYSTEM TO INVADE THE
REGION TOWARDS THE LATTER HALF OF NEXT WEEK.

NO UPDATES PLANNED ON THE EARLY MORNING PACKAGE...THOUGH THE
THREAT OF A RAIN/SNOW MIX IN THE LOWER NRN VALLEYS DOESNT LOOK TO
BE THERE AT THIS TIME.

SLC 777 CDC 566  CONGER

.SLC...HEAVY SNOW WARNING THROUGH SUNDAY NORTHERN MOUNTAINS AND
       SOUTHWEST WYOMING...IDZ025...UTZ007>010 AND WYZ021.

IDZ024-025-UTZ001>021-WYZ021-101400-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
628 AM MST SAT NOV 9 2002

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO-THIRDS OF
UTAH...EXTREME SOUTHEAST IDAHO AND EXTREME SOUTHWEST WYOMING

.DAY ONE... TODAY

COLDER AIR WILL BE PUSHING ACROSS THE AREA TODAY BRINGING SNOW
LEVELS DOWN TO NEAR 5000 FEET IN THE NORTH BY EVENING. THE SNOW WILL
BE HEAVY AT TIMES IN THE MOUNTAINS TONIGHT AND RAIN WILL CHANGE TO
SNOW IN ALL NORTHERN VALLEYS.  A HEAVY SNOW WARNING IS IN EFFECT
FOR THE NORTHERN MOUNTAINS THROUGH SUNDAY.  SEE SLCWSWSLC FOR
DETAILS.

.DAYS TWO THROUGH SEVEN... SUNDAY THROUGH FRIDAY

THE HEAVY MOUNTAIN SNOW...SEE WARNING ABOVE...WILL CONTINUE SUNDAY
AND IN SOME AREAS INTO MONDAY MORNING.  THE WARNING MAY NEED TO BE
EXTENDED. OTHERWISE SNOW SHOULD GRADUALLY TAPER OFF MONDAY AND
MONDAY NIGHT.  NO HAZARDOUS WEATHER IS EXPECTED THE REMAINDER OF
THE PERIOD BUT THERE WILL BE ANOTHER WEAKER STORM SYSTEM MOVING
ACROSS THE NORTHERN HALF OF THE AREA LATE WEDNESDAY INTO THURSDAY.

.INSTRUCTIONS TO SPOTTERS...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURE.

WCJIN-WYSW