National Weather Service Forecast Discussion |
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790 FXUS65 KBOU 070031 AFDBOU Area Forecast Discussion National Weather Service Denver/Boulder CO 531 PM MST Fri Mar 6 2026 .KEY MESSAGES... - Snow to gradually diminish and become more intermittent for the high country and I-25 corridor through early this evening. All areas will be dry by midnight. Slick roads will remain possible through early Saturday morning as temperatures drop well below freezing. - Warming trend returns Saturday, and continues through Monday/Tuesday. Dry weather favored for the foreseeable future, aside from slim (20%) chances for light mountain snow showers Tuesday-Wednesday, && .DISCUSSION /Through Friday/... Issued at 1209 PM MST Fri Mar 6 2026 The winter storm is on its exit glidepath already for the mountains, foothills and urban corridor, although banded snow continues to produce moderate to heavy snow east of I-25 as it pushes deeper into the rural plains. Table Mountain and KFTG profilers indicate strengthening north flow through 11,000 ft MSL as anticipated, acting to reduce snowfall rates for areas west of I-25. This trend is set to continue through the coming hours. With the above in mind, potential for snow accumulation on lower- elevation roadways, especially along/west of I-25 (excluding the Palmer Divide), will be very limited for the remainder of the day. The current Advisories for the Denver metro area may thus be ended early once the current band progresses east of Denver International Airport. Nonetheless, temperatures will more readily descend below freezing this evening, so lingering wet and locally slushy conditions on area roads may lead to re-freezing and some slick conditions that could persist through early Saturday morning. Precipitation will taper off further this evening, with all areas dry by midnight. Lows tonight will drop to near 20F for the metro, upper teens in the plains, and single digits to locally below zero for our high mountain valleys. Subsident flow returns Saturday along with clear sky conditions, allowing for some modest warming into the upper 40`s to low 50`s for the plains and I-25 corridor, with 30`s for mountain communities. The warming trend will accelerate on Sunday and continue into Monday/Tuesday, when highs will rebound into the upper 60`s or even scrape 70F around the Denver metro. We`ll remain under dry zonal flow aloft through Monday, with no precipitation expected. Winds will gradually increase as the jet stream nudges southward closer to Colorado, especially for the high country. There`s a slim shot (~20% chance) for some very light mountain snow showers Tuesday into Wednesday as a shortwave skirts by to our north, and slight cooling on Wednesday as a result, but mountain precip chances may drop to zero soon if current trends in ensemble guidance continue. Dry and unseasonably warm weather is set to prevail thereafter and carry us through the end of the work week. && .AVIATION /00Z TAFS through 00Z Sunday/... Issued at 457 PM MST Fri Mar 6 2026 Snow is ongoing at all three TAF sites, causing visibilities to dip down to 1/2SM at times. Hi-res guidance now keeps snow through 04-06Z for DEN and APA (snow likely to end for BJC by 03Z due to downsloping winds), so have kept a TEMPO group for 3/4SM visibility through 03Z, with light snow showers through 06Z. However, there is a chance (~30%) that snow will end at APA by 03Z as winds turn slightly more northwest. Dry conditions expected through the rest of the TAF period. Ceilings will begin improving as snow comes to an end - lifting to 1000 ft by 03Z and 4000/5000 ft by 06Z. There could be a few lingering low-level clouds overnight, however expect clearing of skies by 12Z. In terms of winds, northerly winds are expected through at least 03Z. The gusty winds we have been seeing all day should decrease in the next hour, with sustained winds of 15-20 kts through 03Z. After that, expect lighter northwesterly winds generally less than 10 kts before drainage flow by 08/09Z. For tomorrow, south/southwesterly winds less than 15 kts are expected. && .BOU WATCHES/WARNINGS/ADVISORIES... Winter Weather Advisory until 8 PM MST this evening for COZ031. Winter Storm Warning until midnight MST tonight for COZ033>036. Winter Weather Advisory until midnight MST tonight for COZ037- 041. && $$ DISCUSSION...BRQ AVIATION...MAI