


Area Forecast Discussion
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
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735 FXUS65 KBOU 061935 AFDBOU Area Forecast Discussion National Weather Service Denver/Boulder CO 135 PM MDT Mon Oct 6 2025 .KEY MESSAGES... - Scattered rain showers in the foothills and I-25 Corridor this afternoon and evening. A few snow showers possible over the mountains. - Cool Tuesday with some partial clearing. - Above normal temperatures return for Wednesday and continue through Saturday. && .DISCUSSION /Through Monday/... Issued at 135 PM MDT Mon Oct 6 2025 Low level flow will continue to keep the low clouds and moisture banked up against the foothills and east slopes of the Front Range mountains through tonight. A jet streak will bring scattered showers to the area through this evening with a little snow over the higher mountains. Precipitation comes to an end this evening, but enough low level moisture will remain in place for low clouds to persist. This will help keep temperatures from fall much overnight with lower to mid 40s expected for overnight lows. Ridging begins to develop Tuesday over the Southern Rockies, but doesn`t affect Colorado yet. Surface high pressure off to the east will result in a southeasterly low level flow. This is expected to produce a Denver cyclone, which will help keep the cooler and more moist air east of the Continental Divide. Expect mostly cloudy skies to begin the day, with some clearing during the afternoon hours. High temperatures will be below normal again with readings in the upper 50s to lower 60 across northeast Colorado. If/where clouds persist through the day, highs will likely be in the 50s. Low level flow turns more southwesterly Tuesday evening and Tuesday night. This will scour out the cooler and more moist airmass. Upper level over the Southern Rockies spreads northward Wednesday bringing warmer and drier conditions. This ridging stays over Colorado through Thursday. Temperatures climb above normal with highs expected to reach the 70s Wednesday and Thursday. The ridging slide east of Colorado Friday as an upper level low moves onto the west coast. The southwest flow aloft will continue to bring mild temperatures with highs in the mid 70s to lower 80s across northeast Colorado. Southwest flow aloft increases into Saturday as the upper level low moves inland. Moisture increases as well with widespread rain showers and high mountain snow (above 12,000 MSL) moves into the western half of Colorado Saturday and Saturday night. The rain and snow showers are expected for the north central mountains as well, but will be lighter and more scattered. The main low travels eastward across Montana and northern Wyoming, staying well north of Colorado. This will result in westerly flow aloft and downslope flow east of the Continental Divide, greatly limiting chances for precipitation. Temperatures cool off for Sunday as a cold front moves through the area. Will have low PoPs in the forecast for Sunday. Flow aloft backs to the southwest flow Monday as the next storm system drops south across the western States. There`s some normal uncertainties in the pattern with next Monday being a week away, but would expect temperatures to be near normal with dry conditions under this pattern. && .AVIATION /18Z TAFS through 18Z Tuesday/... Issued at 1131 AM MDT Mon Oct 6 2025 Low clouds to persist through tonight with ceilings mainly 1500 to 3000 feet. We may see some brief improvement this afternoon with ceilings up to 4000 feet. Rain showers and lower ceilings will be possible 21-04Z. The PROB30 covers this well. Winds to turn northeast this afternoon through 00Z Tuesday. The winds are then expected to turn to the southeast 02-04Z and stay southerly through about 12Z Tuesday. A Denver cyclone is expected to form and bring northerly winds after 12Z Tuesday, which may lower ceilings below 1500 feet. && .BOU WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...Meier AVIATION...Meier