National Weather Service Forecast Discussion |
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213 FXUS65 KBOU 122308 AFDBOU Area Forecast Discussion National Weather Service Denver/Boulder CO 408 PM MST Wed Nov 12 2025 .KEY MESSAGES... - Dry conditions and above normal temperatures are expected across the forecast area into the weekend. - The next system will bring a chance of precipitation to much of the forecast area Sunday night and Monday. && .DISCUSSION /Through Wednesday/... Issued at 241 PM MST Wed Nov 12 2025 Westerly flow aloft under a broad ridge has kept temperatures mild today. A persistent mountain wave cloud has kept highs cooler in Boulder, Erie, and more locations towards Greeley. For those wanting to see the aurora borealis tonight, the satellite imagery is not a good sight. A large area of high clouds is over almost all of the state of Utah and is headed our way this evening. Cloudy skies are expected through the evening with some breaks towards sunrise. Ridging aloft will continue to be in place on Thursday and Friday. Some high level mountain wave clouds are possible each day which could keep highs slightly lower than forecast. However, if there aren`t any high clouds, highs could near records with the mid 70s expected across lower elevations on Thursday and upper 70s on Friday. The record high for Denver is 75 tomorrow and 79 on Friday, with both being within reach. From past forecasts, Saturday and Sunday have trended quite a bit warmer. The ECMWF ensembles for Denver have high confidence in a high around 70 each day. This is because a cut-off trough will meander slowly over California on Saturday and will moves towards Utah on Sunday. This trough will bring light snow to the mountains beginning Sunday night. Some light rain may extend onto the plains Sunday night into Monday morning. Ensemble data shows that next week will at least have an active pattern of troughs moving through our forecast area. There is good confidence in mountain snowfall and confidence is growing that the plains will see a couple rounds of light moisture. Temperatures will fall to near seasonal normals or below normal by the end of the week. && .AVIATION /00Z TAFS through 00Z Friday/... Issued at 406 PM MST Wed Nov 12 2025 VFR conditions thru the period. Light and variable winds will become SE by 01z and then more SSW by 03z. By 16z Thu, winds will become more westerly and then northwesterly by 21z. && .BOU WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...Danielson AVIATION...RPK