977
FXUS65 KBOU 061121
AFDBOU
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
521 AM MDT THU AUG 6 2026
KEY MESSAGES
- VERY WARM TEMPERATURES RETURN TO THE AREA TODAY.
- HOT THIS WEEKEND WITH HIGHS REACHING 95 TO 105 ACROSS NORTHEAST
COLORADO.
DISCUSSION /THROUGH WEDNESDAY/
ISSUED AT 1255 AM MDT THU AUG 6 2026
AN UPPER LEVEL HIGH OVER THE DESERT SOUTHWEST WILL CONTINUE TO
MOVE SLOWLY NORTHEASTWARD. NORTHWEST FLOW ALOFT AROUND THE HIGH
WILL PERSIST TODAY, CONTINUING TO BRING SMOKE FROM THE PACIFIC
NORTHWEST. TEMPERATURES WILL WARM UP MORE TODAY, WITH HIGHS
RETURNING TO THE 90S. THE AIRMASS WILL BE DRY WITH MOSTLY SUNNY
SKIES PREVAILING THROUGHOUT THE DAY.
FOR FRIDAY AND THE WEEKEND, THE UPPER LEVEL HIGH SLIGHTLY
STRENGTHENS FRIDAY AND STALLS OVER THE FOUR CORNERS ON SATURDAY
AND SUNDAY. THE WARMEST AIR IS EXPECTED SATURDAY AND SUNDAY, WITH
HIGHS REACHING 97-105 ACROSS NORTHEAST COLORADO. WITH THE RIDGE
CENTERED OVER THE FOUR CORNERS, WE WILL MAINTAIN A WEAK WEST-
NORTHWEST FLOW ALOFT, WHICH IS EXPECTED TO CONTINUE TRANSPORTING
WILDFIRE SMOKE INTO THE REGION. THIS COULD AFFECT HIGH
TEMPERATURES OVER THE NEXT SEVERAL DAYS. TODAY WILL OFFER A
GLIMPSE OF HOW MUCH THIS SMOKE WILL AFFECT HIGH TEMPERATURES. WE
ARE ON TRACK FOR HEAT ADVISORIES FOR SATURDAY AND SUNDAY, BUT
TEMPERATURES COULD FALL SHORT DUE TO THE WILDFIRE SMOKE. THE
AIRMASS STAYS VERY DRY (PRECIPITABLE WATER VALUES 50% OF NORMAL)
FRIDAY AND SATURDAY. MOISTURE FINALLY STARTS TO INCREASE SUNDAY,
THOUGH PRECIPITABLE WATER VALUES STAY BELOW NORMAL. WE SHOULD SEE
A FEW SHOWERS AND STORMS FORM OVER THE HIGHER ELEVATIONS SUNDAY
AFTERNOON.
FOR NEXT WEEK MONDAY THROUGH WEDNESDAY, THE UPPER LEVEL HIGH
WEAKENS SOME. MODELS DIFFER ON THE LOCATION AND STRENGTH OF THE
UPPER LEVEL HIGH. THE GFS KEEPS THE HIGH PARKED OVER THE FOUR
CORNERS AND ONLY WEAKENS THE RIDGE SLIGHTLY. THIS WOULD LIMIT
MONSOONAL MOISTURE AND HELP KEEP TEMPERATURES VERY WARM.
MEANWHILE, THE ECMWF SHOWS THE RIDGE WEAKENING MORE AND ENDING UP
OVER NEW MEXICO AND TEXAS. THIS LEADS TO A BETTER MONSOONAL FETCH,
COOLER TEMPERATURES, AND A BETTER CHANCE FOR SHOWERS AND
THUNDERSTORMS.
AVIATION /12Z TAFS THROUGH 12Z FRIDAY/
ISSUED AT 521 AM MDT THU AUG 6 2026
MOSTLY CLEAR SKIES WILL PREVAIL THROUGH TONIGHT. SMOKE WILL
PERSIST FOR THE FORESEEABLE FUTURE (NEXT SEVERAL DAYS) AND COULD
AFFECT APPROACH SLANTWISE VISIBILITY. A NORMAL DIURNAL WIND
PATTERN WILL PREVAIL TODAY AND TONIGHT WITH GENERALLY LIGHT (LESS
THAN 12 KTS) WINDS.
BOU WATCHES/WARNINGS/ADVISORIES
NONE.
DISCUSSION...12
AVIATION...12
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