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376 FXUS65 KBOU 092323 AFDBOU Area Forecast Discussion National Weather Service Denver/Boulder CO 523 PM MDT Thu Apr 9 2026 .KEY MESSAGES... - Scattered showers this afternoon/evening. A few weak thunderstorms are also possible. Rainfall amountswill be light (less than 0.10"). - A brief cool down Friday with scattered rain showers. Isolated thunderstorms are also possible. - Scattered showersSaturday with a few thunderstorms, mainly over the mountains andfar northeast plains. - Warm and dry Sunday and Monday, with breezy/windy conditions possible. && .DISCUSSION /Through Thursday/... Issued at 1252 PM MDT Thu Apr 9 2026 Scattered showers and perhaps a few weak thunderstorms will develop this afternoon. Moisture continues to be limited, which will keep rainfall amounts light. Gusty outflow winds up to 40 mph will be possible around the showers and storms. A weak cold front drops south across eastern Colorado this evening. Lift from the front may produce additional scattered showers this evening.Low level moisture begins to increase, but not enough during the evening to enhance rainfall. Low level flow turns southeasterly by Friday morning, ushering low level moisture and low clouds over the eastern plains. A Denver cyclone forms and likely pulls the cooler air and low clouds westward over the northern parts of the urban corridor. A convergent zone develops by afternoon and along this, scattered showers and isolated thunderstorms are expected to form. As this activity progresses eastward, it will encounter the cooler more stable airmass and should dissipate. Across the mountains, the airmass becomes unstable during the afternoon with scattered high-based showers and isolated thunderstorms expected. For Saturday through Monday, southwest flow aloft will prevail during this time frame. An upper levellow will move across California this weekend. It then weakens into a large trough with at least two shortwave troughs passing through it. A shortwave trough embedded in the southwest flow ahead of the main trough will track across the Central Rockies on Saturday. Scattered afternoon and early evening showers are expected to develop. A few weak thunderstorms are also possible. Limited moisture will keep rainfall amounts light. Flow aloft slowly increases as the trough approaches the region, becoming strong on Monday. Breezy winds are expected on Sunday and it may be windy on Monday if this patterncontinues to hold. Temperatures will be above normal with dry conditions, leading to possible elevated to critical fire weather conditions Sunday and Monday. Models have generally trended quicker and weaker as the upper level trough moves across the Central Rockies. Cooler and unsettled weather is still likely on Tuesday. Chances for heavier precipitation have decreased, but it is still possible if a shortwave trough intensifies into a closed low as it rotates through the longwave trough. This is not uncommon, but the location needs to be just right. A warming and drying trend is expected for Wednesday and Thursday behind the exiting system. There`s still considerable uncertainty during this period, especially on Tuesday. && .AVIATION /00Z TAFS through 00Z Saturday/... Issued at 517 PM MDT Thu Apr 9 2026 VFR conditions are expected to prevail for all terminals through the TAF period. Scattered -SHRA with ISO -TSRA will continue to impact the metro area through 02-03Z, producing VRB gusts 21-26 kts. Activity will subside mid-evening with prevailing winds becoming light and VRB for the overnight period and through ~15Z Fri. Friday, a Denver cyclone look to set up early to the south of KDEN, with enhanced SE winds through 20-22Z for KDEN/KAPA. Thereafter, wind direction uncertainty increases notably. Generally favoring prevailing N/NW for KDEN given preferred southern placement of the cyclone. Nonetheless, SCT -TSRA activity should develop after 20Z and will lead to variability in winds from outflows, with gusts up to 25-30 kts. && .BOU WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...12 AVIATION...BRQ