Area Forecast Discussion
Issued by NWS Denver/Boulder, CO

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FXUS65 KBOU 032149
AFDBOU

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
249 PM MST TUE MAR 3 2015

.SHORT TERM...(THIS AFTERNOON THROUGH WEDNESDAY)
ISSUED AT 249 PM MST TUE MAR 3 2015

UPPER LEVEL TROUGH OVER SOUTHERN IDAHO AND WESTERN WYOMING WILL MOVE
SOUTHEAST ACROSS THE STATE TONIGHT. A SECONDARY FRONT...BETTER SEEN
AT 750MB...WILL DIVE SOUTH ACROSS EASTERN COLORADO THIS EVEING. THE
UPPER LEVEL TROUGH...COLD FRONT AND UPSLOPE LOW LEVEL FLOW WILL HELP
PRODUCE SNOW THIS EVENING. COULD EVEN SEE A HEAVIER LINE OF SNOW
WITH THE SECOND FRONT WHICH COULD PRODUCE A SHORT DURATION OF
GUSTY WINDS...HEAVY SNOW AND POOR VISIBILITY.

FOR THE MOUNTAINS...A MOIST UNSTABLE SOUTHWEST TO WEST FLOW WILL
CONTINUE TO BRING SNOW THROUGH TONIGHT. STEEP LAPSE RATES AT 500-
700MB WILL LINGER THROUGH THIS EVENING OVER THE MOUNTAINS AND
FRONT RANGE. SNOW SHOWERS WILL BRING BRIEF PERIODS OF HEAVY SNOW
DUE TO THE INSTABILITY. BEST CHANCE FOR THE HEAVIEST SNOW WILL BE
THIS AFTERNOON AND EVENING OVER THE MOUNTAINS.

WILL KEEP THE WINTER WEATHER HEADLINES IN EFFECT THROUGH TONIGHT. DO
NOT ANTICIPATE ANY MAJOR CHANGES TO THEM. HEAVIEST SNOW WILL BE
IN AND NEAR THE FOOTHILLS. EXPECT ROADS TO BECOME SNOW PACKED AND
ICY THIS EVENING DUE TO THE FALLING TEMPERATURES...LOST OF SUN AND
INCREASE IN SNOWFALL.

IT WILL BE COLD TONIGHT AND WEDNESDAY AS AND ARCTIC MOVES INTO
COLORADO. LOWS WILL BE IN THE SINGLE DIGITS WITH SUB ZERO
TEMPERATURES LIKELY IN THE NORTHERN FOOTHILLS. TEMPERATURES WILL
REMAIN COLD WEDNESDAY WITH HIGHS ONLY IN THE UPPER TEENS AND LOWER
20S.

LIGHT SNOW WILL LINGER INTO THE MORNING HOURS...MAINLY ALONG AND
SOUTH OF INTERSTATE 70. WILL KEEP POPS IN THE FORECAST FOR THE
MORNING. WILL ALSO KEEP POPS IN THE FORECAST DURING THE AFTERNOON
HOURS OVER THE MOUNTAINS WHERE A WEAK WAVE AND OROGRAPHIC LIFT
COULD PRODUCE SOME WEAK SNOW SHOWERS.

.LONG TERM...(WEDNESDAY NIGHT THROUGH MONDAY)
ISSUED AT 249 PM MST TUE MAR 3 2015

THE UPPER LEVEL TROUGH WILL MAKES ITS WAY SE OF THE REGION
WEDNESDAY EVENING. THE NAM INDICATES MILD LOW LEVEL UPSLOPE
WEDNESDAY EVENING WITH SOME RESIDUAL MOISTURE IN THE
MOUNTAINS. LIGHT SNOW WILL BE POSSIBLE MAINLY OVER THE THE
MOUNTAINS...PALMER DIVIDE AND FOOTHILLS INTO THE EARLY MORNING ON
THURSDAY. AFTER THE TROUGH MOVES EAST UPPER LEVEL FLOW WILL BECOME
NW AHEAD OF ANOTHER WEAK DISTURBANCE. THIS FEATURE WILL MOVE OVER
THE REGION THURSDAY LATE AFTERNOON AND EVENING. THERE IS LITTLE
MOISTURE ASSOCIATED WITH THIS SO HAVE KEPT JUST A SLIGHT CHANCE
FOR SOME LIGHT SNOW IN THE HIGHER MOUNTAINS. HIGHS ON THURSDAY
WILL BE WARMER THEN WHAT WE HAVE SEEN BUT STILL BELOW SEASONAL
NORMALS IN THE UPPER 30S.

FOR FRIDAY INTO THE WEEKEND NWLY FLOW WILL REMAIN ALOFT WITH A
DEEP HIGH PRESSURE SYSTEM OVER THE WEST COAST OF CA. FOR SATURDAY THERE
IS SOME MOISTURE EMBEDDED IN THE FLOW BUT UPPER LEVEL DYNAMICS ARE
NOT IMPRESSIVE AND LATEST MODEL RUNS HAVE FLUSHED OUT DISTURBANCES
FROM PREVIOUS RUNS. WITH SOME MOISTURE TRAPPED IN THE MOUNTAINS
WILL KEEP A SLIGHT CHANCE OF SNOW FOR THAT REGION SATURDAY BUT
FOR THE PLAINS IT COULD ONLY RESULT IN SOME CLOUD COVER IN THE
MORNING THAT COULD POSSIBLY HINDER MAX TEMPS FOR LATER IN THE DAY.
HIGHS ON SATURDAY WILL BE SLIGHTLY WARMER ON THE PLAINS WITH
TEMPERATURES IN THE 40S AND RISE AGAIN FOR SUNDAY WITH HIGHS
REACHING INTO THE LOWER 50S.

FOR EARLY NEXT WEEK THE UPPER LEVEL FLOW WILL REMAIN FROM THE NW
WITH UPPER LEVEL MOISTURE DRYING OUT. THIS WILL HELP TO BRING
TEMPERATURES TO NORMAL OR SLIGHTLY ABOVE NORMAL WITH HIGHS
CURRENTLY FORECASTED TO REACH INTO THE UPPER 50S ON MONDAY AND
POSSIBLY LOWER 60S BY TUESDAY.

&&

.AVIATION...(FOR THE TAFS THROUGH 18Z WEDNESDAY MORNING)
ISSUED AT 249 PM MST TUE MAR 3 2015

CEILINGS ARE EXPECTED TO REMAIN LESS THAN 2000 FEET THROUGH 18Z
WEDNESDAY AND THEN SLOWLY IMPROVE. SNOW WILL REDUCE VISIBILITY TO 1-
3SM. HEAVIER SNOW BANDS MAY REDUCE VISIBILITY UNDER A MILE AT TIMES.
A SECOND SURGE FROM THE NORTH MAY BRING A SHORT PERIOD OF HEAVY SNOW
AND GUSTY WINDS WHICH COULD DROP VISIBILITY TO QUARTER MILE. SNOW
WILL END FROM NORTH TO SOUTH WEDNESDAY MORNING. TOTAL SNOWFALL IS
EXPECTED TO BE 2 TO 5 INCHES WITH THE HEAVIER SNOWFALL AMOUNTS ON
THE SOUTH AND WEST SIDES OF DENVER.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...
WINTER WEATHER ADVISORY FROM 2 PM THIS AFTERNOON TO 5 AM MST
WEDNESDAY FOR COZ035-036-039>041.

WINTER STORM WARNING UNTIL 5 AM MST WEDNESDAY FOR COZ031-033.

&&

$$

SHORT TERM...MEIER
LONG TERM...BOWEN
AVIATION...MEIER


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