textproduct: Pueblo

KEY MESSAGES

- Isolated to low-end scattered shower and thunderstorm activity today through Sunday, mainly over the higher terrain and plains south of Highway 50.

- Healthier moisture tap starting Monday, leading to increased precipitation coverage and intensity.

- Continued hot through the extended period, with little day to day changes.

SHORT TERM /THROUGH TONIGHT/

Issued at 1235 AM MDT Fri Sep 4 2026

Upper low pressure system was currently parked over the WA and OR coastlines, broad upper high remained over the southeastern US, and Hurricane Marie was very slowly moving northwest, off the coast of the CA Baja. This pattern continued to produce broad southwest flow aloft across the Four Corners and CO. A weak tap of moisture has worked up across New Mexico today and tonight, clipping the southeast corner of CO.

Currently...A few light showers have moved up along the southern CO border and across the southeast corner of the state, with some of the showers actually making it to the ground as a trace. A good amount of cloud cover streamed across the southeast corner as well. Overnight low temps are anticipated to be in the 40s to around 50F for the high valleys, and upper 50s to mid 60s for the plains.

Today and tonight...The upper low remains over WA and OR today, with the upper high to the east starts to amplify moreso over the central US. Remnant moisture from Hurricane Marie as well as monsoonal moisture over Mexico will continue to get drawn up across the Four Corners and into CO, leading to isolated to scattered shower and storm activity starting around midday and lasting into the evening. Focus areas will be the higher terrain, best chances along the southern border, as well as portions of the eastern plains, mainly south of Highway 50. SPC has painted the entire area with General Thunder, while the Excessive Rainfall Outlook focuses on areas south of the CO/NM border. It will continue to be hot, with highs in the 80s for the high valleys, which is about 5 degrees above normal, and upper 80s to upper 90s for the plains, which is close to 10 degrees above normal.

LONG TERM /SATURDAY THROUGH THURSDAY/

Issued at 1235 AM MDT Fri Sep 4 2026

Saturday and Sunday...Models indicate that the Pacific NW upper low will persist over WA and OR through Sat, then begin to open and dig south towards southern OR and northern CA on Sun. The upper high to the east changes very little, remaining amplified over the central US. So, the end result seems to be very little change over the weekend, with isolated to scattered convection each afternoon and evening over the higher terrain and portions of the plains, with the focus areas along the southern tier. Temps remain somewhat stagnant as well, with each day climbing into the 80s for the high valleys and 90s for the plains, which continues to be above normal.

Monday through Thursday...Long range model solutions start to diverge, though the operational GFS is leaning more along the lines of the NBM. The Pacific NW low pressure system opens up and pinwheels to the northeast across the northern Rockies on Mon, sweeping an upper shortwave across the Great Basin and Rocky Mt region. The upper trough remains over the Pacific NW though, dropping another low center down along the West Coast and keeping deep southwest flow aloft across the Four Corners. The upper disturbance Mon will tap into available moisture to spawn increased activity, then Tue onward the deep SW flow aloft will greatly enhance monsoonal moisture advection into CO. All this to say - precipitation chances increase in coverage across the entire forecast area starting Mon, with the best chances across the higher terrain. Increased storm coverage and in turn intensity could mean growing flash flood potential for area burn scars, so though monitoring is done on a daily basis, those areas will need more attention starting Mon. As for temps, the extended procedure keeps highs at a steady state through the week, with temps each day above normal. Given the expected increased precip and cloud cover, high temps for the mts and high valleys will likely cool a few degrees, but there is still time to fine tune that. Moore

AVIATION /12Z TAFS THROUGH 12Z SATURDAY/

Issued at 549 AM MDT Fri Sep 4 2026

VFR conditions remain expected at COS, PUB and ALS over the next 24 hour. There has been a slight increase in available moisture, leading to an expected increase in coverage of afternoon showers and storms today. However, the chances remain too low to include in the tafs at this time. Will also need to watch for gusty outflows, otherwise, winds will be generally light diurnal at the terminals.

PUB WATCHES/WARNINGS/ADVISORIES

None.