Northwest flow over the area produced high based and windy thunderstorms.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PUB wrote it up.
Northwest flow over the area produced high based and windy thunderstorms.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Pueblo, CO wrote its last area forecast discussion before the first event at Sep 8, 4:35 PM MST, 30 minutes earlier.
Area Forecast Discussion National Weather Service Pueblo CO Issued by National Weather Service Denver CO 535 PM MDT Mon Sep 8 2025 Key Messages: - Slight uptick in storm activity tomorrow with potential for stronger storms across the far southeast plains. - Temperatures at to slightly above seasonal levels with daily chances of afternoon showers and storms over and near the higher terrain through mid week. - Cooler late week with greatest coverage of showers and storms Friday (highest chances still over the mountains), then drier again into the weekend. && Short Term through Tuesday: Current water vapor imagery has modest westerly flow aloft across the region, as a broad upper trough across the West Coast is ejecting short waves through upper level ridging in place across the Intermountain West and Rockies at this time. Temperatures, as of 1 pm, have warmed into the 80s across the plains, with readings mainly in the 60s and 70s across the higher terrain. Regional radars are indicating a few showers and an isolated storm across the higher terrain, with SPC meso-analysis indicating CAPE of less than 500 j/kg over and near the higher terrain, though does have CAPE up to 2000 j/kg across the far southeast plains at this time. DCAPE of 800-1300 j/kg is also in place. Rest of Today and Tonight... Latest model data continues to support fairly isolated high based showers and storms over and the higher terrain through the early evening, with drier air mixing down across the far southeast plains through the late afternoon limiting instability into the evening. Showers and storms that do develop will be mainly high based, with gusty outflow winds up to 50 mph the main threat through the evening, with slowly clearing skies through the overnight hours and near seasonal overnight lows once again. Will need to monitor any convection across western Kansas, though, as a some data supports increasing instability through the overnight hours, and the potential for convection early Tuesday morning across the far southeast plains. Tuesday... Flow aloft becomes slightly more southwest through the day, with model data supporting increasing available moisture with PWATS of 100 to 125 percent of normal into the afternoon. This will support better coverage of showers and storms over and near the higher terrain tomorrow afternoon, with better chances of seeing measurable rain. Further east across the plains, lee troughing will develop southerly flow with progged CAPE of up to 2000 j/kg in place in the afternoon, along with bulk shear of 30-40kts. Latest SPC guidance indicates a marginal risk of severe storms across the far southeast plains, with strong winds and large hail being the main risks if storms can develop. Temperatures tomorrow will remain at to slightly above normal with highs in the 80s to lower 90s once again across the plains, and mainly in the 60s and 70s across the higher terrain. && .LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/... Issued at 245 pM MDT Mon Sep 8 2025 Wednesday and Thursday pretty much have the same weather impacts each day as a closed low stalls over the US West. Each day there will be weak waves that pass over Colorado. The current thinking is that each of the waves will spark thunderstorms over the mountains and mountain valleys during the mid afternoon and then develop further to the east before dissipating before shortly after sunset. The main hazards from the storms appear to be locally heavy rain and gusty outflow winds. The instability really isn’t there each of these days, so the severe hail risk is low. However, the DCAPE values each day are above 1000 J/kg, so perhaps isolated 60 MPH wind gust will develop. High temperatures will be persistent with values in the 80s to 90s over the plains and the 60s to 70s over the mountain valleys. Friday through Sunday...The closed low finally breaks free of being stalled over the US west and ejects over northwest Colorado. The wave will be the strongest wave of the week, which will spark more widespread showers and thunderstorms over the mountains, mountain valleys, and the adjacent plains. MUCAPE values are less than 1000 J/kg, so the severe risk for hail is low. The thermodynamic profile over the San Luis Valley is a bit concerning because of how saturated the profile is – I think there may be a sneaky heavy rain and flash flood risk over the mountains and the mountain valleys as the wave passes overhead on Friday. The profile over the plains have a large T – Td spread, so the gusty outflow winds are expected. Saturday and Sunday look drier as the heights rise after the trough passes overhead with perhaps an isolated thunderstorm over the mountains. && .AVIATION /00Z TAFS THROUGH 00Z WEDNESDAY/... Issued at 535 PM MDT Mon Sep 8 2025 VFR conditions are likely during the next 24 hours at all 3 taf sites, KPUB, KALS and KCOS. There may be some quick moving convective showers this at the beginning of this taf period which may cause some brief gusty winds, otherwise winds will become light and diurnally driven. Diurnal flow is anticipated tomorrow at each taf site. Chances of convective showers are low tomorrow and decided to leave any mention of convection out of tomorrow afternoons TAFs. && .PUB WATCHES/WARNINGS/ADVISORIES... None. && SHORT TERM...WFO PUB LONG TERM...WFO PUB AVIATION...WFO PUB
Hazardous Weather Outlook National Weather Service Pueblo CO Issued by National Weather Service Denver CO 1131 AM MDT Mon Sep 8 2025 COZ058>089-093>099-091045- Western Mosquito Range/East Lake County Above 11000 Feet- Leadville Vicinity/Lake County Below 11000 Feet- Eastern Sawatch Mountains Above 11000 Feet- Western Chaffee County Between 9000 and 11000 Feet- Central Chaffee County Below 9000 Feet- Western Mosquito Range/East Chaffee County Above 9000 Feet- Saguache County West of Continental Divide Below 10000 Feet- Saguache County East of Continental Divide Below 10000 Feet- La Garita Mountains Above 10000 Feet- Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Feet-Eastern San Juan Mountains Above 10000 Feet- Del Norte Vicinity/Northern San Luis Valley Below 8500 Feet- Alamosa Vicinity/Central San Luis Valley Below 8500 Feet- Southern San Luis Valley- Northern Sangre de Cristo Mountains Between 8500 And 11000 Feet- Northern Sangre de Cristo Mountains Above 11000 Feet- Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet- Southern Sangre de Cristo Mountains Above 11000 Feet- Northwestern Fremont County Above 8500 Feet- Western/Central Fremont County Below 8500 Feet- Wet Mountain Valley Below 8500 Feet- Wet Mountains between 6300 and 10000 Feet- Wet Mountains Above 10000 Feet- Teller County/Rampart Range Above 7500 Feet/Pikes Peak Between 7500 And 11000 Feet-Pikes Peak Above 11000 Feet- Canon City Vicinity/Eastern Fremont County- Northern El Paso County/Monument Ridge/Rampart Range Below 7500 Feet- Colorado Springs Vicinity/Southern El Paso County/Rampart Range Below 7400 Feet-Pueblo Vicinity/Pueblo County Below 6300 Feet- Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Feet- Trinidad Vicinity/Western Las Animas County Below 7500 Feet- Crowley County-La Junta Vicinity/Otero County- Eastern Las Animas County-Western Kiowa County- Eastern Kiowa County-Las Animas Vicinity/Bent County- Lamar Vicinity/Prowers County-Springfield Vicinity/Baca County- 433 AM MDT Mon Sep 8 2025 This hazardous weather outlook is for portions of central...east central...south central and southeast Colorado. .DAY ONE...Today and Tonight Isolated showers and thunderstorms are expected to develop over the higher terrain this afternoon, with a few storms pushing east across the high mountain valleys and the immediate adjacent plains through the late afternoon and early evening. Storms will be higher based, with the main threats being lightning and gusty outflow winds up to 50 mph. Brief heavy rain and small hail may also accompany the strongest storms. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Daily showers and thunderstorms are expected over the mountains, mountain valleys, and the plains. Though scattered in coverage, there will be a risk for lightning, gusty outflow winds, and small hail. On Friday a stronger wave passes overhead increasing the thunderstorm coverage across the aforementioned areas. .SPOTTER INFORMATION STATEMENT... Weather conditions that meet reporting criteria for spotters will be possible over portions of the region. GARBEROGLIO/SKELLY
The national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
Convective wind gust of 66 mph was measured at KALS observation station.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2025Every state in 2025This day in weather historyWarnings in Colorado, September 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1295140.