384 FXUS65 KPUB 012323 AFDPUBArea Forecast Discussion National Weather Service Pueblo CO 523 PM MDT Wed Oct 1 2025
.KEY MESSAGES...
- Dry, warm, and calm weather the rest of Today and on Thursday.
- Breezy to windy conditions Friday and Saturday as an upper level weather system translates across the Rockies.
- Well above seasonal temperatures on Friday with increasing coverage of showers and storms Friday night and Saturday over the higher terrain.
- Cooler and more unsettled weather remains on tap for the weekend into early next week.
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.SHORT TERM /THROUGH TONIGHT/... Issued at 452 PM MDT Wed Oct 1 2025
Rest of Today and Tonight...
High pressure continues to build in overhead, with above-average temperatures and dry westerly flow. Given the dry conditions, temperatures will noticeably cool off overnight, though the plains will still be a few degrees above normal. Expect lows in the 40s to near 50 out east, while the mountain valleys fall into the 30s, with a few of the lower lying areas approaching freezing. Areas of frost will be possible into early Thursday morning for a few hours over the San Luis Valley, warranting a Frost Advisory 3am-9am.
Thursday...
Dry west-southwest flow will continue overhead on Thursday, leading to another dry, warm day across the region. High temperatures will be a few degrees warmer than today, with mid-high 80s over most of the plains, and mid-70s over the high valleys and the Palmer. Winds will keep a southerly component, with a few gusts in the afternoon, but overall a quiet, clear day is expected.
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.LONG TERM /THURSDAY THROUGH WEDNESDAY/... Issued at 306 AM MDT Wed Oct 1 2025
Thursday night-Saturday night...Latest operational and ensemble model data are coming into better agreement with a broad upper trough digging into the Great Basin on Friday, which then lifts out across the Rockies on Saturday. Increasing southwest flow allows for breezy conditions over and near the higher terrain on Friday, with lee troughing leading to breezy southerly winds across the plains. The breezy and dry conditions will lead to elevated fire danger across the area, though recent precipitation will limit critical fire weather conditions, with no fire weather highlights expected at this time. Temperatures are expected to be well above seasonal levels on Friday, with highs in the 80s to lower 90s expected across the plains, and in the 60s and 70s across the higher terrain. Current records for October 3rd are 79F at ALS in 2024, 87F at COS in 1935, and 94F at PUB in 2018.
Increasing southwest flow aloft will bring increasing coverage of showers and a few possible embedded thunderstorms along and west of the ContDvd Friday night and Saturday, with chances of precipitation spreading east through the day Saturday. Breezy west to southwest winds across the region Friday night becomes more westerly and remain gusty as the passing system`s bora front translates across south central and southeast Colorado through the day. This will allow for temperatures to warm quickly on Saturday into the 70s and 80s across the plains, with mainly 50s and 60s across the higher terrain, save for 30s and 40s across the peaks. Current model data keeps the best chances of precipitation along the ContDvd with snow levels remaining relatively high (at or above 10,000 feet) leading to some light accumulations across the higher peaks. Cooler and much drier air filters into the region behind the passing system Saturday night, leading to the potential for sub-freezing temperatures across the higher terrain into early Sunday morning.
Sunday-Wednesday...Latest model data differ on the timing and location of secondary energy digging back across the Great Basin, as well as the amount of available moisture across the region into the beginning of next week. With that said, NBM data keeps temperatures at to slightly below seasonal levels, along with chances of precipitation areawide into early next week.
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.AVIATION /00Z TAFS THROUGH 00Z FRIDAY/... Issued at 520 PM MDT Wed Oct 1 2025
VFR conditions are near certain at KCOS and KPUB, and likely at KALS, during the next 24 hours. With temps getting cool in the San Luis Valley, I cannot rule out some brief periods of GF around sunrise at KALS tomorrow morning.
Winds will be quite light and primarily diurnally driven at each taf sites. Winds may be a bit breezy at KCOS tomorrow afternoon.
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.PUB WATCHES/WARNINGS/ADVISORIES... Frost Advisory from 3 AM to 9 AM MDT Thursday for COZ070-071.
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SHORT TERM...GARBEROGLIO LONG TERM...MW AVIATION...HODANISH
NWS PUB Office Area Forecast Discussion