Area Forecast Discussion
Issued by NWS Denver/Boulder, CO

Home | Current Version | Previous Version | Graphics & Text | 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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS65 KBOU 142054
AFDBOU

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
254 PM MDT SUN SEP 14 2014

.SHORT TERM...(THIS EVENING THROUGH MONDAY)
ISSUED AT 229 PM MDT SUN SEP 14 2014

SHOWERS AND A FEW THUNDERSTORMS WILL CONTINUE THIS AFTERNOON
MAINLY NORTHERN MOUNTAINS AND ALONG THE CHEYENNE RIDGE...THESE
SHOULD DIE QUICKLY EARLY THIS EVENING. THEN WE TURN OUR ATTENTION
TO THE COLD FRONT WHICH SHOULD ENTER THE STATE AROUND SUNSET...
THEN PROCEED SOUTH THROUGH THE METRO AREA AROUND MIDNIGHT. MODELS
SHOW BOUNDARY LAYER GETS SATURATED ACROSS NORTHEAST COLORADO EARLY
TOMORROW MORNING...SO EXPECT AREAS OF FOG AND STRATUS TO DEVELOP
ACROSS THE PLAINS. WITH THE SLOW START AND A COOLER AIRMASS IN
PLACE...MONDAY WILL BE QUITE A BIT COOLER...WITH HIGHS IN UPPER
60S TO LOWER 70S ON THE PLAINS. THE MORNING CLOUDS WILL GIVE WAY
SLOWLY TO PARTLY SUNNY CONDITIONS BY EARLY AFTERNOON. GUIDANCE
TEMPERATURES WERE HIGHER THAN OUR EARLIER FORECAST...WE SHOULD GET
MUCH OF THE AFTERNOON TO WARM THINGS UP...SO I RAISED MAX TEMPS BY
A DEGREE. MODELS ALSO SHOWED SHOWERS AND THUNDERSTORMS DEVELOPING
OVER THE HIGHER TERRAIN ON MONDAY...RAISED POPS A BIT...BUT PLAINS
SHOULD BE TOO COOL AND STABLE TO HAVE ANY AFTERNOON THUNDERSTORM
ACTIVITY.

.LONG TERM...(MONDAY NIGHT THROUGH SUNDAY)
ISSUED AT 229 PM MDT SUN SEP 14 2014

SKIES WILL CLEAR BEHIND A WEAK SHORTWAVE MONDAY NIGHT. SOUTH TO
SOUTHWEST WINDS ON THE PLAINS SHOULD BE ENOUGH TO KEEP STRATUS
FROM REDEVELOPING...THOUGH THERE IS A CHANCE OF GETTING SOME IN
THE NORTHEAST CORNER. WARM AND DRY AIR WILL THEN BE OVER COLORADO
AS THE UPPER RIDGE SHIFTS EASTWARD. HIGH TEMPERATURES WILL WARM TO
NEAR 90 ON THE PLAINS BY THURSDAY...BUT THE NIGHTTIME COOLING WILL
HELP KEEP THINGS RATHER STABLE...GENERALLY A LITTLE SHY OF
CONVECTIVE TEMPERATURES SO EVEN THE AFTERNOON CLOUD COVER SHOULD
BE LIMITED.

MOISTURE WILL BEGIN TO SPREAD IN FROM THE WEST LATE THURSDAY
POSSIBLY BRINGING ISOLATED SHOWERS TO THE MOUNTAINS. MODELS HAVE
TRENDED AWAY FROM A STRONG TROUGH ON FRIDAY. DESPITE INCREASING
MID AND HIGH LEVEL MOISTURE THERE MAY NOT BE MUCH IN THE WAY OF
DYNAMIC LIFT...INSTABILITY...OR LOW LEVEL MOISTURE. CURRENT LOW
POPS SEEM APPROPRIATE. BEST CHANCE OF RAIN PROBABLY LATE FRIDAY AS
A COLD FRONT MOVES UNDER THE MOISTURE ALOFT. SATURDAY LOOKS FAIRLY
STABLE BEHIND THE FRONT...NOT READY TO RULE OUT SHOWERS YET THOUGH
THEY MAY BE LIMITED TO THE MOUNTAINS OR PERHAPS JUST ENDING ON THE
PLAINS IN THE MORNING AS THE TROUGH EXITS. LOOKING FOR SOME
RECOVERY ON SUNDAY WITH SOME LOW/MID LEVEL MOISTURE TRAPPED SOUTH
OF THE REBUILDING RIDGE. NOT ENOUGH DRYING YET TO PRECLUDE
ISOLATED SHOWERS...MOST LIKELY IN AND NEAR THE MOUNTAINS.

&&

.AVIATION...(FOR THE TAFS THROUGH 00Z MONDAY LATE AFTERNOON)
ISSUED AT 229 PM MDT SUN SEP 14 2014

A DRY AND STABLE AIRMASS IS IN PLACE OVER THE METRO AREA...THERE
WILL BE A FEW SHOWERS AND THUNDERSTORMS OVER THE HIGHER TERRAIN
INTO EARLY EVENING.  THE COLD FRONT SHOULD ARRIVE FROM THE NORTH
AROUND 06Z...WITH UPSLOPE CONDITIONS DEVELOPING BEFORE SUNRISE.
I EXPECT AREAS OF STRATUS AND FOG TO DEVELOP...WITH IFR CONDITIONS
AT AREA AIRPORTS BETWEEN 10Z AND 15Z...POSSIBLY A LITTLE LONGER.
CLOUDS WILL LIFT MID MORNING WITH VFR CONDITIONS RETURNING. DRY
AND STABLE CONDITIONS RETURN TO METRO DENVER MONDAY AFTERNOON...
WITH SOME THUNDERSTORMS OVER THE MOUNTAINS...BUT COOLER AND STABLE
CONDITIONS ON THE PLAINS.

&&

.BOU WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$

SHORT TERM...RTG
LONG TERM...GIMMESTAD
AVIATION...RTG


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