Quantitative Precipitation Forecast
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
000
FOUS11 KWBC 061936
QPFHSD

PROBABILISTIC HEAVY SNOW AND ICING DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
336 PM EDT FRI MAY 06 2016

VALID 00Z SAT MAY 07 2016 - 00Z TUE MAY 10 2016


DAYS 1-3...

...SIERRA/NORTHERN AND CENTRAL ROCKIES...

SNOW LEVELS REMAIN HIGH...MOSTLY ABOVE 7500 TO 8500 FEET BUT THE
LARGE UPPER LOW OVER THE WESTERN UNITED STATES WILL CONTINUE TO
PRODUCE HEAVY SNOW...WITH THE WIND RIVER MOUNTAINS/ABSAROKA RANGE
AND LARAMIE RANGE SEEING THE HIGHEST TOTALS...POSSIBLY 1 TO 2
FEET.  THE NEAR SYMMETRICAL UPPER LOW WILL MOVE EAST NORTHEASTWARD
AS SEVERAL EMBEDDED SHORTWAVES HELP DRIVE THE SYSTEM. WITH MOIST
UPPER LEVEL SOUTHEASTERLY TO EASTERLY FLOW ESPECIALLY ACROSS
NORTHERN COLORADO AND WYOMING...STRONG LIFT WILL PRODUCE THE
HEAVIEST SNOW.  OTHER HIGH PEAKS IN THE WEST INCLUDING THE
SIERRA/WASATCH/UINTA/SAN JUAN/COLORADO RANGES AND THE HIGH PEAKS
IN NEVADA WILL ALL SEE SIGNIFICANT SNOW.  EVEN THE HIGH PEAKS OF
SOUTHERN CALIFORNIA WILL ALSO SEE SNOW AS SNOW LEVELS DROP TO
AROUND 7000 FEET.

A STRONG SHORTWAVE SYSTEM MOVING SOUTHEASTWARD FROM SOUTHWESTERN
CANADA ON SUNDAY INTO MONDAY WILL HELP KICK THIS SYSTEM EASTWARD.
HOWEVER...IT WILL ALSO BRING SNOW LEVELS DOWN TO BELOW 6000 FEET
AND WILL GENERATE HIGH ELEVATION SNOWFALL ACROSS THE WESTERN
MONTANA MOUNTAINS AS THE TROUGH DEEPENS OVER THE NORTHWEST STATES
ON DAY 3/MONDAY.  SNOW WILL FALL AS LOW AS 5500 FEET AND THERE IS
A LOW PROBABILITY OF GREATER THAN 4 INCHES OF SNOW NEAR THE BORDER
OF NORTHWEST MONTANA/BRITISH COLUMBIA AND ALBERTA.

THE PROBABILITY OF SIGNIFICANT ICING IS LESS THAN 10 PERCENT.

KOCIN



$$




USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.