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701 FXUS65 KBOU 092324 AFDBOU Area Forecast Discussion National Weather Service Denver/Boulder CO 424 PM MST Sun Nov 9 2025 .KEY MESSAGES... - Dry conditions and above normal temperatures are expected across the forecast area all week. - A few hours of elevated fire weather conditions are expected Tuesday afternoon over the plains. - An upper trough is expected to move across the forecast area late Friday and Saturday with a chance of precipitation for most areas. && .DISCUSSION /Through Sunday/... Issued at 155 PM MST Sun Nov 9 2025 Models show the northerly flow aloft tonight to gradually weaken and become northwesterly by Monday afternoon as upper riding moves slowly eastward towards Colorado. The northwesterly flow aloft is expected to continue through Tuesday night at jet level speeds of 30 to 50 mph. By Wednesday, the upper ridge is over the CWA and the zonal flow aloft is progged to increase in speed. The QG fields point to very weak or no synoptic scale energy over the CWA tonight through Wednesday night. The QPF fields show no measurable precipitation through Wednesday night either. Will keep the dry weather going through Wednesday. For temperatures, thickness fields point to daily highs getting 10 to 15 degrees F above normal much of the week. There is an outside chance of a record high or two being set through Thursday. There will be elevated fire weather conditions; mainly Tuesday afternoon, across the plains due to the warmth, dryness and fairly breezy winds that are expected. For the later days, Thursday through Sunday, zonal flow aloft on Thursday increases and becomes southwesterly by Friday ahead of an approaching upper trough. The trough axis is over the western Colorado border 00Z Saturday, then it moves across the CWA through mid day Saturday. The GFS is stronger than the ECMWF with this feature. This system will bring a chance of precipitation to the CWA Friday into early Sunday, especially in the mountains. Strong north-northwesterly flow aloft moves in early Sunday but then decreases through the day. && .AVIATION /00Z TAFS through 00Z Tuesday/... Issued at 420 PM MST Sun Nov 9 2025 VFR conditions are expected through the TAF period with light winds. && .BOU WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...66 AVIATION...Hiris