382 FXUS65 KPUB 211733 AFDPUBArea Forecast Discussion National Weather Service Pueblo CO 1133 AM MDT Sun Sep 21 2025
.KEY MESSAGES...
- Drier and warm today.
- warm again tomorrow with increasing thunder chances.
- Closed low to move over state Tuesday-ish bringing high elevation snow and cool damp wx to a good part of the remainder of the region.
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.SHORT TERM /THROUGH MONDAY/... Issued at 307 AM MDT Sun Sep 1 2025
Today...Warm and dry conditions are expected today over a large majority of the fcst area today. Best chance of some isolated thunder will be over higher elevations of central mtns and higher elevations of the Pikes Peak region.
Tonight...Dry. Min temps in the 50s plains, 40s valleys.
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.LONG TERM /MONDAY NIGHT THROUGH SATURDAY/... Issued at 307 AM MDT Sun Sep 21 2025
Monday...Moisture begins to increase from the west and pops begin to increase over the mtns early in teh day and progress west as the day advances. This is in response to a compact trough moving in from the NW. This system will allow a front to move down the plains during the afternoon period, with upslope flow developing in the low levels by later in the day. This in turn will bring a bit more unstable airmass to the region, and thunder will become possible by later in the afternoon over the plains. SPC has a good part of the plains under marginal for severe storms this day given the increasing flow aloft and increasing instability in the low levels.
Monday night into Tuesday...Weather will become a bit more active over the region. Confidence is high that it will become much cooler over the region, and max temps only in the 50s to around 70F for the plains looks reasonable. How much precip we get will be dependent on the track and intensity of the incoming mid level low. NAM guidance is more open and progressive while the GFS and EC are a bit more farther west and more closed off. If these two models verify, then we will see a much better chance od deeper upslope flow and wrap- around moisture. At this time, it appears the best chance of precip will be over the Pikes Peak region and southern mtns. As for precip type, snow will be possible at the highest elevations during this period and expect the mtn tops will get a covering of snow with this event. Lower elevations will likely see some flakes but not much in the way off accums. Could monument hill see some flakes?...maybe...and if would occur it would be Wed AM.
From mid week into the weekend, much drier wx and warmer weather returns. We could see a return of a more monsoon pattern returning by the weekend, but this will be dependent on the motion of a closed low over the SW CONUS during this time period. /Hodanish
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.AVIATION /18Z TAFS THROUGH 18Z MONDAY/... Issued at 1132 AM MDT Sun Sep 21 2025
VFR conditions are anticipated across the forecast area over the next 24 hrs, including the three main TAF sites of KCOS, KPUB and KALS. Surface winds will be diurnal in direction and generally under 12 kts. Isolated convection across the Pikes Peak region may produce some intermittent higher gusts at KCOS this afternoon between 19z-00z, but confidence is too low to include mention in terminal forecast.
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.PUB WATCHES/WARNINGS/ADVISORIES... None.
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SHORT TERM...HODANISH LONG TERM...HODANISH AVIATION...MOORE
NWS PUB Office Area Forecast Discussion