textproduct: Pueblo

KEY MESSAGES

- Dry conditions with near seasonal temperatures today.

- A quick moving upper wave will likely bring minor accumulating snow to the Continental Divide late Wednesday night into Friday morning.

- The Plains will remain mild, 10-15 degrees above normal, and dry.

SHORT TERM /THROUGH TONIGHT/

Issued at 222 AM MST Mon Dec 29 2025

Current water vapor imagery and upper air analysis is indicating moderate northwest flow aloft across the Rockies, with yesterday's passing system continuing to translate across the Upper Midwest into the Great Lakes Region. Regional satellite imagery has passing high clouds across the Southern Rockies and the Intermountain West, with clear skies in place across the Central Rockies at this time. This has allowed for strong radiational cooling, with IR satellite imagery indicating cold pockets across the high mountain valleys of northern and central Colorado early this morning. Current readings are in the single digits and teens areawide, with a few below zero readings in the northern and central valleys (Granby -3F) as of 1 AM MST.

There is not much change in the forecast for today and tonight, with weakening northwest flow aloft as upper level ridging builds across the West Coast and Great Basin. With the weakening flow aloft and dry air in place, will see slowly warming temperatures to around seasonal levels in the 30s and 40s areawide, under mostly sunny skies.

Temperatures warm aloft overnight, with surface temperatures expected to cool rapidly after sunset, especially across the San Luis Valley and the lower Arkansas River Valley, with lows in teens and 20s areawide. Temperatures look to warm over and near the higher terrain before sunrise on Tuesday.

LONG TERM /TUESDAY THROUGH SUNDAY/

Issued at 222 AM MST Mon Dec 29 2025

Models in good agreement through the extended period, with the only precipitation forecast for mid to late week along the Continental Divide. Otherwise, continued dry and mild conditions are forecast for southern Colorado.

Tuesday...dry, northwesterly flow will prevail across southern Colorado on Tuesday. Temperatures will be on the rise, with mostly 50s across the Plains, and 40s across the San Luis Valley. No precipitation is forecast.

Tuesday night through Friday...quick moving upper level riding will spread across Colorado Tuesday night through Wednesday, before an upper shortwave trough impacts the region. We will continue to see mild and dry conditions during this period, with overnight lows Tuesday night into Wednesday morning mostly in the 20s on the Plains, with single digits across the San Luis Valley. Temperatures will continue to warm on Wednesday, with upper 50s to mid 60s on the Plains, and near 50 over the San Luis Valley.

The upper shortwave will approach the area Wednesday night, and move quickly across southern Colorado on Thursday. Moisture will increase with the upper shortwave, with snow spreading along the Continental Divide by Thursday morning. Orographic southwesterly flow aloft will favor the San Juan Range, where the highest snow accumulations are forecast. At this time, snow amounts look minor, with less than 5 inches over the San Juans, and less than 3 over the La Garita Range and Central Mountains. The Plains are forecast to remain dry and mild, with highs reaching the upper 50s to lower 60s. This is a quick moving system, and will quickly eject the northeast Thursday night, with snow coming to an end across the higher terrain Friday morning to early afternoon. Temperatures will remain warm on the Plains for Friday, with continued 50s and lower 60s.

Saturday through Monday...another quick moving upper ridge will spread across the region Saturday, before the next upper wave looks to impact the region by early next week. Wind looks to increase across the area late Saturday and continue into Sunday. There are some signals in the model guidance that winds could be quite gusty late Saturday night into Sunday morning along the Eastern Mountains. Snow looks to hold off along the Continental Divide for the weekend, with another quick shot Sunday night into Monday. Temperatures will remain warm over the weekend, with 50s and 60s for most of the lower elevations, with a cold front arriving by Monday, which will knock around 10 degrees off forecast highs. Mozley

AVIATION /18Z TAFS THROUGH 18Z TUESDAY/

Issued at 1015 AM MST Mon Dec 29 2025

VFR conditions are expected at KALS, KCOS, and KPUB through 24 hours. Winds will remain light and diurnally driven.

PUB WATCHES/WARNINGS/ADVISORIES

None.