2 hail, 1 lightning, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 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 26, 1:45 PM MST, 3 hours 45 minutes earlier.
NORTHEAST AND NORTH CENTRAL COLORADO AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER CO 245 PM MDT SAT JUL 26 2003 SHORT TERM DISCUSSION...STG SFC CDFNT STILL ON TRACK TO MOV THRU THE ERN PLAINS THIS EVENING. MDLS HAS COALESCED INTO REASONABLE AGMNT WRT TIMING THE FNT. FIRST SURGE WL SPILL OVR THE BORDER ARND 00Z WITH THE WND BCMG STGR OUT OF THE NE ARND 03Z IN DENVER. MDLS ARE TRENDING TWD STG WNDS THAN PRVS RUNS...18Z RUC DEPICTING NELY WNDS OF 25 KTS OVR THE ERN PLAINS. THERE ARE SOME PRESSURE RISES ACRS THE DAKOTAS...BUT CANNOT SEE THE WNDS BEING THAT STG TNGT. AS THE FNT PUSHES SWD ACRS THE DIST THRU 06Z...WNDS ACRS THE FNT RANGE AND FTHILLS WL BE NELY...THEN WL TREND SELY. THIS SHUD CAUSE PCPN TO DCRS ACRS JEFFERSON AND DOUGLAS CNTY FIRST...THEN LATER IN BOULDER AND LARIMER COUNTIES AS THE WNDS BCM LESS ORTHOGONAL. AVN AND ETA AT ODDS IN DEPICTION OF LCN OF UPPER LVL SUPPORT. AVN KEEPS MOST OF THE LIFT ACRS THE PLAINS AND INTO KS AND NEBR WHILE THE ETA AND MESOETA KPS MOST OF THE UPR LVL SUPPORT ALG THE FTHILLS WHERE THE BEST OROGRAPHIC LIFT WL OCCUR. MDLS ARE PAINTING PRODIGIOUS PRECIPITATION ACRS THE PLAINS DURG THE PD...AVN HAS A WIDE SWATH THRU THE FIRST AND SECOND PERIOD. FAVORING THE ETA/MESOETA WHICH KPS MOST OF THE SIGNIFICANT QPF ALG THE FNT RANGE TNGT. TMRW...MID LVL MSTR WL LINGER ACRS THE AREA THRU THE DAY. NOT A LOT OF UPPER SUPPORT TO HELP PRODUCE PRECIP AND THE PLAINS/FNT RANGE WL BE TOO STBL FOR SUBSTANTIAL CONVECTION. STG ELY WAVE MOVG ACRS NEW MEXICO AND AZ WL GENERATE SOME PCPN...BUT THIS CWFA IS TOO FAR NORTH TO BENEFIT FROM THIS. DUE TO THE WK WNDS ALF AND AMT OF RESIDUAL MSTR IN THE MID LVLS...FNT RANGE AREA WL PBLY RMN CLDY THRU THE DAY AND WL ADJUST TEMPS DWNWD TO WELL BELOW NRML LEVELS FOR ZNS 38-40 OTWS WL MAKE LTL CHG TO PD 2. 46 LONG TERM DISCUSSION: NEXT COUPLE DAYS LOOK WET ACRS THE FCST AREA. WITH THE UPR RIDGE CENTERED W OF US AND A STALLED SFC FRONT ALG THE PALMERS DVD...ABUNDANT MID AND LOW LVL MSTR IN THE REGION WL PRODUCE THE THREAT OF AFTN AND EVENING SHOWERS...MAINLY ON THE PLAINS AND AGAINST THE FTHLS. 700 MB SPEC HUMIDITY FIELDS SHOW VALUES GREATER THAN 8 G/KG SO THE AMS WL BE MOIST. THE STALLED FRONT WL SERVE AS A LOW LVL FOCUSING MECHANISM...WHILE AT UPR LVLS...MODELS SHOW REGION OF UPR LVL DIFFLUENT FLOW WL BE OVERHEAD. WILL GO WITH LKLY POPS ALG AND N OF THE PALMER DVD TMRW NITE AS A BEST GUESS OF WHERE ALL THE FCST INGREDIENTS WL BE COMING TOGETHER. TEMPS WL REMAIN COOL ON MONDAY AS MSTR LINGERS. AFTN AND EVENING SHOWERS WL AGAIN BE SUPPORTED BY THE WEAK NWLY FLOW ALOFT CONTG OVR THE REGION. THE REST OF THE WEEK WILL FEATURE A GRADUAL WARMUP IN TEMPS AND A RETURN TO DRIER WX AS THE STRONG UPR LVL RDG OVR THE WRN U.S. MIGRATES EWD...RIGHT OVR CO. BY NEXT SUNDAY...THE LATEST MRF RUN SHOWS THE UPR RIDGE TO BE FAR ENOUGH EWD TO ALLOW SOME MONSOONAL MSTR TO MAKE IT INTO CO. WELL SEE IF SUBSEQUENT MODEL RUNS CONT TO SHOW THIS. UNTIL THEN...THE END OF THE WEEK WL BE DRY WITH TEMPS ON THE PLAINS MAKING BACK INTO THE LOWER 90S. KDRBY .DEN...NONE.
COZ030>051-271200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1100 AM MDT SAT JUL 26 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP AGAIN THIS AFTERNOON IN THE HIGH COUNTRY. SOME OF THE STORMS WILL APPROACH THE FRONT RANGE BY LATE AFTERNOON...BUT LITTLE BESIDES WIND CAN BE EXPECTED FROM THE STORMS. IT WILL BE TOO STABLE ACROSS THE PLAINS FOR MORE THAN ISOLATED THUNDERSTORMS IN THE AFTERNOON. A TROUGH WILL MOVE INTO THE EASTERN PLAINS TONIGHT WITH UPSLOPE FLOW DEVELOPING BEHIND IT. SINCE THE ATMOSPHERE WILL BE VERY MOIST TONIGHT...SOME SIGNIFICANT RAINFALL MAY BE POSSIBLE IN AREAS OF THE FOOTHILLS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SCATTERED THUNDERSTORMS WILL OCCUR OVER THE MOUNTAINS SUNDAY THROUGH TUESDAY. THUNDERSTORMS WITH POSSIBLY HEAVY RAIN WILL ALSO BE POSSIBLE ON THE PLAINS SUNDAY. A COLD FRONT IS EXPECTED TO MOVE OVER THE NORTHEASTERN PLAINS SUNDAY MORNING. THERE SHOULD BE SUFFICIENT MOISTURE...INSTABILITY AND LIFT ASSOCIATED WITH THE FRONT...FOR SCATTERED SHOWERS AND THUNDERSTORMS ACROSS THE NORTHEAST PLAINS OF COLORADO...ESPECIALLY DURING THE AFTERNOON. DRIER AND WARMER CONDITIONS WILL RETURN TO THE AREA BY MIDWEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.
The Cheyenne radar (KCYS), 77 km away, was scanning. The volume nearest the first event began at 00:35 UTC.
2 hail, 1 lightning. Local standard time, as filed.
A woman was struck by lightning while camping.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2003Every state in 2003This day in weather historyWarnings in Colorado, July 2003
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: 5368270, 5368268, 5368269.