Area Forecast Discussion
Issued by NWS Denver/Boulder, CO

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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS65 KBOU 292034
AFDBOU

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
234 PM MDT FRI AUG 29 2014

.SHORT TERM...(THIS EVENING THROUGH SATURDAY)
ISSUED AT 1245 PM MDT FRI AUG 29 2014

ALREADY SEEING A FAIR AMOUNT OF CONVECTION DEVELOPING OVER THE
FRONT RANGE FOOTHILLS. STORMS ARE DEVELOPING ON LEADING EDGE OF
WEAK WAVE APPROACHING FROM WYOMING. EXPECT CONTINUED COOLING ALOFT
WHICH IS HELPING TO DESTABILIZE THE ATMOSPHERE. NOTHING TO STRONG
BUT STILL COULD SEE HEAVY RAIN AND SMALL HAIL WITH THE STRONGER
STORMS. EXPECT SHOWERS TO END LATER THIS EVENING AND CLEARING
SKIES OVERNIGHT AS UPPER AIR SUPPORT MOVES EAST WITH THE TROF.

THE FLOW ALOFT WILL SHIFT MORE WESTERLY ON SATURDAY AS THE HIGH
PRESSURE ALOFT SHIFTS INTO THE CENTRAL PLAINS. THERE IS SOME
DRYING AND ADDITIONAL WARMING EXPECTED SATURDAY AFTERNOON. INITIAL
CONVECTION A BIT MORE ISOLATED IN COVERAGE THAN TODAY AND MORE
CONFINED OVER MOUNTAINS AND HIGHER TERRAIN ON SATURDAY AFTERNOON.

.LONG TERM...(SATURDAY NIGHT THROUGH FRIDAY)
ISSUED AT 1245 PM MDT FRI AUG 29 2014

A FEW SHOWERS OR STORMS FROM SATURDAY AFTERNOON WILL LINGER INTO THE
EVENING HOURS. WESTERLY FLOW ALOFT WILL INCREASE SATURDAY NIGHT AS
AN UPPER LEVEL TROUGH OVER THE NORTHERN ROCKIES AND NORTHERN GREAT
BASIN NEAR COLORADO. A COLD FRONT ASSOCIATED WITH THE TROUGH WILL
PUSH SOUTH THROUGH NORTHEAST COLORADO SUNDAY MORNING. THE MAIN UPPER
LEVEL TROUGH WILL RACE ACROSS THE STATE SUNDAY AFTERNOON AND
EVENING. THIS SYSTEM WILL BRING A CHANCE FOR SHOWERS AND
THUNDERSTORMS ALONG WITH COOLER TEMPERATURES FOR SUNDAY. EXPECT SOME
DOWNSLOPE WINDS IN THE FOOTHILLS WHICH MAY LIMIT THE CHANCE FOR
PRECIPITATION. MOST MODELS SHOW SOME SHALLOW UPSLOPE OVER THE FRONT
RANGE...SO WILL HAVE LOW POPS IN THE FORECAST. DRIER AIR WILL MOVE
INTO THE AREA QUICKLY SUNDAY EVENING...CLEARING OUT THE
PRECIPITATION. EXPECT ANOTHER COOL NIGHT SUNDAY NIGHT/MONDAY MORNING
WITH SOME 40S POSSIBLE.

WEST-NORTHWEST FLOW ALOFT WILL PREVAIL MONDAY. THE ECMWF AND
SOMEWHAT THE GFS SHOW A WAVE MOVING ACROSS WYOMING MONDAY. WILL PUT
LOW POPS IN THE FORECAST FOR THIS OVER NORTHERN PARTS OF THE AREA.
TEMPERATURES WILL BE MILD WITH READINGS NEAR TO SLIGHTLY BELOW
NORMAL.

DRY AND MILD CONDITIONS ARE EXPECTED TUESDAY AND WEDNESDAY AS AN
UPPER LEVEL RIDGE MOVES ACROSS THE REGION. SOUTHWEST FLOW ALOFT WILL
DEVELOP WEDNESDAY AS THE RIDGE SHIFTS EAST OF THE REGION. THIS
SOUTHWEST FLOW MAY EVENTUALLY PUMP UP SOME MONSOON MOISTURE FOR
THURSDAY AND FRIDAY. WILL HAVE LOW POPS IN THE FORECAST FOR THIS
INCREASE IN MOISTURE. TEMPERATURES ARE EXPECTED TO BE NEAR TO
SLIGHTLY ABOVE NORMAL UNDER THIS PATTERN.

&&

.AVIATION...(FOR THE TAFS THROUGH 00Z SATURDAY LATE AFTERNOON)
ISSUED AT 1245 PM MDT FRI AUG 29 2014

EXPECT SCATTERED SHOWERS AND STORMS THRU EARLY THIS EVENING THEN
CLEARING SKIES WITH BRIEF RAIN AND ERRATIC AND GUSTY WINDS TO
30KT. EXPECT SURFACE WINDS TO CONTINUE NORTHEAST THIS AFTERNOON
BEFORE TURNING EAST AND SOUTH THIS EVENING THEN BACK TO DRAINAGE
BY LATER TONIGHT.

&&

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

$$

SHORT TERM...ENTREKIN
LONG TERM...MEIER
AVIATION...ENTREKIN



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