textproduct: Pueblo

KEY MESSAGES

- Increased coverage of showers and storms expected tomorrow, with flash flood potential, especially along the Aspen Acres burn scar.

- Showers and storms continue through much of the incoming week, though with a downtrend in coverage late week.

SHORT TERM /THROUGH SUNDAY/

Issued at 202 PM MDT Sat Aug 22 2026

Tonight: For Saturday night, active weather persist for portions of south central and southeastern Colorado. A ridge of high pressure will be in place just to the south of the region. Along the northern periphery of this feature, a short wave will push across the area through the evening and overnight hours. The increased support from this wave, along with abundant monsoonal moisture in place, will allow for storms that develop along the higher terrain earlier in the day to push eastward across the plains overnight. The greatest coverage of storms is expected north of Highway 50, where support from the wave will be best. In addition, outflow from these storms may initiate further thunderstorm development along and just south of Highway 50, but this will be highly dependent on how outflows evolve during this period. With high precipitable water values between 1-.1.5 inches, heavy rainfall and strong outflow winds around 55 mph from wet microburst/heavy water laden downdrafts will be possible with stronger thunderstorms. Outside of that, light showers will fester around the mountain and valley areas. Heading into the early morning hours though, most, if not all, showers and storms are anticipated to be dissipate as the shortwave exits. Beyond all of that, winds will weaken and become lighter overnight, around 10 mph, with clouds lingering through much of the evening and overnight as well. Looking at temperatures, given the moisture and cloud cover in place, another mild to warm night is anticipated, with the plains cooling into the 60s to low 70s, the valleys into the 50s to low 60s, and the mountains into the low 40s to 50s.

Tomorrow: Heading into Sunday, another day of active weather is anticipated for south central and southeastern Colorado. The ridge of high pressure will remain to our south, with monsoonal moisture continuing to stream up and around the ridge and into the region. Like Saturday and Saturday night, this moisture, combined with vort maxes and a short wave within the broader flow, will bring another day of scattered to numerous showers and thunderstorms. Showers and storms are expected to first blossom along the mountains, and then ooze across the valleys and adjacent plains by mid to late afternoon. With another day of high precipitable water values around 1-1.2 inches, more heavy rainfall and strong outflow winds around 50 mph from water laden downdrafts is expected with any stronger storms. Also given the increased coverage, flash flooding may become a concern, especially across the Aspen Acres burn scar. Given this, a Flash Flood Watch has been issued for this area for Sunday. Outside of all of that, afternoon winds will remain fairly light, around 10 mph, with cloud cover increasing heading into the afternoon hours. As for temperatures, another hot day with above seasonal values is expected, with the plains warming into the low to upper 90s, the valleys into the low to upper 80s, and the mountains into the mid 50s to mid 70s.

LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/

Issued at 202 PM MDT Sat Aug 22 2026

Sunday Night - Friday: For the rest of the forecast period, active weather persist across south central and southeastern Colorado. The ridge of high pressure to south will remain there, but will slowly meander further to the southwest throughout the week. While monsoon moisture will continue to stream around this feature and into the area, it will become less and less as the high pressure cuts-off the better quality moisture heading through week. With that all said, daily afternoon and evening showers and storms are still expected each day, with the greatest coverage through Wednesday, with a progressive downtrend in coverage Thursday and Friday. Otherwise, winds will continue to remain relatively light, with afternoon and evening clouds expected. Temperatures will also remain elevated, with much of the region staying at above seasonal values through the week, especially for the end of the week.

AVIATION /06Z TAFS THROUGH 06Z MONDAY/

Issued at 1125 PM MDT Sat Aug 22 2026

VFR conditions anticipated across the forecast area, including the three main TAF sites of KCOS, KPUB and KALS, during the overnight hours, though decided to maintain mention of VCSH at KCOS and KPUB until 07z as a few light showers linger. On Sunday, convection expected to redevelop over the higher terrain by 18z-19z, spreading to lower elevations after 20z.

KCOS and KPUB: PROB30 for -TSRA once again starting 21z-22z and lasting until 03z.

KALS: PROB30 for variable gusts and -TSRA again starting at 20z, lasting until 02z.

PUB WATCHES/WARNINGS/ADVISORIES

Flash Flood Watch from Sunday afternoon through Sunday evening for COZ079-080-086.