Area Forecast Discussion
Issued by NWS Denver/Boulder, CO

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
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
-- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
000 FXUS65 KBOU 281658 AFDBOU AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER/BOULDER CO 958 AM MST FRI NOV 28 2014 .UPDATE... ISSUED AT 958 AM MST FRI NOV 28 2014 WESTERLY FLOW ALOFT WILL AGAIN BRING MILD AND DRY CONDITIONS TODAY. A FEW LOCATIONS IN THE FOOTHILLS ARE SEEING WIND GUSTS TO 70 MPH THIS MORNING. THE 12Z NAM INDICATES THE MOUNTAIN WAVE WILL DECREASE AROUND 18Z. EXPECT WINDS TO SLOW UP SOME WITH GUSTS DROPPING TO AROUND 40 MPH IN THESE WIND PRONE AREAS. WATER VAPOR SHOWING MOISTURE AT THE UPPER PARTS OF THE ATMOSPHERE WEST OF COLORADO TO THE PACIFIC. THIS WILL KEEP WAVE CLOUDS OVER EASTERN COLORADO TODAY AND TONIGHT. WILL KEEP HIGHS IN THE UPPER 60S TO LOWER 70S ACROSS NORTHEAST COLORADO. IF SKIES CONTINUE TO REMAIN NEARLY OVERCAST ACROSS NORTHEAST COLORADO MAY NEED TO LOWER TEMPERATURES A FEW DEGREES. && .SHORT TERM...(TODAY THROUGH TONIGHT ) ISSUED AT 414 AM MST FRI NOV 28 2014 WLY FLOW ALOFT WILL BE OVER THE RGN THRU TONIGHT. ONCE AGAIN HIGHER LEVEL MOISTURE IS EMBEDDED IN THE FLOW WHICH WILL LEAD TO SOME WAVE CLOUDS. SIMULATED IMAGERY SUGGESTS HI LVL CLOUD COVER THRU THE DAY SO ITS HARD TO SAY HOW MUCH OF AN IMPACT THIS WILL HAVE ON HIGHS. FOR NOW WILL KEEP READINGS IN THE UPPER 60S TO NR 70 AROUND DENVER WITH 60S ACROSS THE PLAINS. IF CLOUD COVER THINS OUT THEN RECORD HIGH OF 72 AT DENVER COULD BE TIED. AREAS ALONG THE PLATTE RIVER VALLEY FM FORT MORGAN TO STERLING MAY STAY IN THE UPPER 50S TO LOWER 60S IF THE HRRR IS CORRECT. AS FOR WINDS MTN TOP INVERSION IS RATHER WK THIS AFTN THRU TONIGHT SO APPEARS THE HIGHEST WINDS WILL STAY ABV TIMBERLINE WITH A FEW GUSTS IN THE 60 TO 70 MPH RANGE. .LONG TERM...(SATURDAY THROUGH THURSDAY) ISSUED AT 414 AM MST FRI NOV 28 2014 STRONG WEST-SOUTHWESTERLY FLOW ALOFT WILL COVER THE FORECAST AREA INTO SUNDAY NIGHT. AN UPPER TROUGH WILL MOVE EASTWARD TO OUR NORTH SATURDAY NIGHT INTO MID DAY SUNDAY. UPWARD VERTICAL VELOCITY IS PROGGED FOR THE CWA SATURDAY INTO SUNDAY EVENING. THE BOUNDARY LAYER FLOW IS DOWNSLOPING SOUTHWESTERLIES ON SATURDAY AND SATURDAY NIGHT...WITH A COLD FRONT AND UPSLOPE FOR THE PLAINS AFTER 12Z SUNDAY MORNING. SOME FORM OF EASTERLY COMPONENT IS PROGGED THROUGH SUNDAY NIGHT FOR THE PLAINS AND FOOTHILLS. THE HIGHEST WINDS IN THE MOUNTAINS LOOK TO COME SATURDAY NIGHT...THE WAVE SET UP LOOKS THE STRONGEST THAN. NO HIGHLIGHTS. FOR MOISTURE...IT IS SPARSE SATURDAY AND SATURDAY NIGHT. THERE IS AN INCREASE FOR THE WESTERN CWA ON SUNDAY...BUT NOT A LOT IN THE LOWER LEVELS. THERE IS SOME LOW LEVEL MOISTURE OVER THE EASTERN HALF OF THE PLAINS WITH THE UPSLOPE BY SUNDAY AFTERNOON AND EVENING. MOISTURE IS BEST SUNDAY NIGHT...FAIRLY DEEP IN THE MOUNTAINS. MODELS SHOW A TAD OF MEASURABLE SNOWFALL ON THE QPF FIELDS FOR THE MOUNTAINS AND THE NORTHERN BORDER AREAS LATE SUNDAY AFTERNOON INTO EARLY MONDAY MORNING. WILL GO WITH SOME MINOR POPS IN THE MOUNTAINS SUNDAY NIGHT...THAT`S IT. SATURDAY`S HIGH TEMPERATURES ARE 1-2 C COOLER THAN THIS AFTERNOON`S HIGHS. ON SUNDAY...READINGS COOL DOWN SOME 10-20 C FROM WEST TO EAST. FOR THE LATER DAY`S...MONDAY THROUGH THURSDAY...THE ECMWF AND THE GFS HAVE COME MORE IN LINE WITH ONE ANOTHER. THERE IS ZONAL TO WEST-NORTHWESTERLY FLOW ALOFT ON MONDAY...THEN SOME UPPER RIDGING TUESDAY INTO WEDNESDAY...WITH THE ECMWF HAVING WEAK UPPER RIDGING ON WEDNESDAY. ON THURSDAY... THEY BOTH HAVE WEAK UPPER RIDGING. OVERALL THEY AGREE A BIT BETTER THAN YESTERDAY`S 00Z RUNS. THE GFS HAS MORE MOISTURE. WILL HAVE SOME MINOR ALPINE POPS HERE AND THERE BUT NOTHING SIGNIFICANT. && .AVIATION...(FOR THE TAFS THROUGH 18Z SATURDAY MORNING) ISSUED AT 958 AM MST FRI NOV 28 2014 VFR CONDITIONS WILL PREVAIL THROUGH THE NEXT 24 HOURS WITH HIGHS CLOUDS PERSISTING THROUGH TONIGHT AND INTO SATURDAY MORNING. SOUTHERLY WINDS THIS MORNING ARE EXPECTED TO TURN SOUTHWEST TO WEST AFTER 18Z. WINDS WILL RETURN SOUTHERLY THIS EVENING. && .BOU WATCHES/WARNINGS/ADVISORIES... NONE. && $$ UPDATE...MEIER SHORT TERM...RPK LONG TERM...RJK AVIATION...MEIER

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