A severe thunderstorm produced winds to 60 mph in Centennial Colorado.
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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 BOU wrote it up.
A severe thunderstorm produced winds to 60 mph in Centennial Colorado.
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 Denver/Boulder, CO wrote its last area forecast discussion before the first event at Jul 22, 3:07 PM MST, 1 hour 9 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Denver/Boulder CO 407 PM MDT Tue Jul 22 2025 .KEY MESSAGES... - Increased moisture and slight cooling expected by midweek leading to better chances for showers and thunderstorms Today through Thursday. - Heavy rainfall under slow moving storms may result in localized flooding today and Wednesday. - Warmer and drier for next weekend. && .DISCUSSION /Through Tuesday/... Issued at 255 PM MDT Tue Jul 22 2025 Current radar shows convection underway along the higher elevations, with a near stationary line of storms currently producing heavy rainfall in Lincoln County. The main concern for today will be the potential for these slow moving storms to lead to localized flooding from heavy rainfall, and with DCAPE values approaching 1000 J/kg, across the plains, gusty outflows to 50 mph will be possible, especially for the far east plains. ACARS soundings show CIN is decreasing across the plains and instability is slowly increasing as surface heating has resulted in low level lapse rates nearly at the DALR. With multiple outflow boundaries present across the plains, showers and storms are expected to develop across the lower foothills and lower elevations in the next hour or two. Showers and storms are expected to continue into late tonight before a cold front drops south across northern Colorado early Wednesday morning. Mid and low level moisture will increase Wednesday, and with greater forcings expected, another day of scattered to numerous showers and storms will be on tap for the forecast area. Ensembles continue to show moisture peaking Wednesday, with PWAT values increasing to 130-160% of normal, but remaining elevated on Thursday, so there will be one more day of scattered to numerous afternoon showers and storms across the forecast area on Thursday before a warming and drying trend returns on Friday. Not much has changed with the persistent upper level high still in place over the Mississippi River Valley region. This ridge is expected to amplify through the weekend, with models showing 500 mb heights approaching 6000m. This will result in hot temperatures across the plains, with triple digits forecast along the South Platte River Valley on Sunday and Monday. Scattered afternoon showers and thunderstorms will still be possible for the higher elevations each day, but moisture will remain limited across the plains through the weekend. && .AVIATION /18Z TAFS through 18Z Wednesday/... Issued at 1211 PM MDT Tue Jul 22 2025 Current NE winds should persist until showers and storms kick in this afternoon. The main impacts will be gusty outflows between 25 to 35 kts from passing storms, and a few wind shifts from outflow boundaries moving across the plains. There are some uncertainties with regards to how long showers will continue into tonight, so have introduced a PROB30 for the potential they continue beyond the afternoon convection. There are also some uncertainties with timing on a frontal passage Wednesday morning, which could make the difference between low stratus developing in the early morning. There is too much uncertainty to add into the TAF for now, but this may need to be included in the coming updates. However, winds are expected to transition to the north between 14/15Z at KDEN and KBJC, followed by KAPA shortly there after. Winds will increase as the front passes with gusts between 20-25 kts possible. && .BOU WATCHES/WARNINGS/ADVISORIES... None. && DISCUSSION...Bonner AVIATION...Bonner
Hazardous Weather Outlook National Weather Service Denver/Boulder CO 728 AM MDT Tue Jul 22 2025 COZ030>051-231330- Jackson County Below 9000 Feet- West Jackson and West Grand Counties Above 9000 Feet- Grand and Summit Counties Below 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Central and Southeast Park County- Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Elbert/Central and East Douglas Counties Above 6000 Feet- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Logan County-Washington County-Sedgwick County-Phillips County- 728 AM MDT Tue Jul 22 2025 This hazardous weather outlook is for northeast and north central Colorado. .DAY ONE...Today and Tonight An uptick in moisture today will bring an increase in shower and thunderstorm activity. Brief heavy rain and gusty outflow winds to 50 mph will be possible, but can't rule out a few severe gusts, especially for the far eastern plains. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Moisture will continue to increase for Wednesday with scattered to numerous showers and thunderstorms expected once again. Heavy rain with localized flooding will be possible with these slow moving storms. Afternoon and evening showers and thunderstorms continue for Thursday and Friday, though they may not be as strong as moisture begins to decrease. Warmer and drier conditions are expected for the weekend, with portions of the plains forecast to reach the triple digits. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today or tonight.
Special Weather Statement National Weather Service Denver CO 220 PM MDT Tue Jul 22 2025 COZ046-222045- North and Northeast Elbert County Below 6000 Feet/North Lincoln County CO- 220 PM MDT Tue Jul 22 2025 ...A STRONG THUNDERSTORM WILL IMPACT EAST CENTRAL ELBERT AND NORTH CENTRAL LINCOLN COUNTIES UNTIL 245 PM MDT... At 220 PM MDT, Doppler radar was tracking a strong thunderstorm 8 miles north of Limon, and is stationary. HAZARD...Wind gusts up to 40 mph and nickel size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Mainly rural areas of East Central Elbert and North Central Lincoln Counties. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the weather situation closely and be alert for threatening weather conditions. Torrential rainfall is also occurring with this storm and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3929 10380 3948 10380 3949 10350 3929 10349 TIME...MOT...LOC 2019Z 0DEG 0KT 3938 10363 MAX HAIL SIZE...0.88 IN MAX WIND GUST...40 MPH Danielson
The Denver radar (KFTG), 36 km away, was scanning. The volume nearest the first event began at 23:18 UTC.
2 thunderstorm wind. Local standard time, as filed.
The wind gust was recorded at the ASOS station located at the Centennial airport (APA).
The wind gust was recorded at the mesonet station CO001 located at I-25 and C470.
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, July 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: 1271433, 1271434.