1 high wind, 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 Aug 2, 1:55 PM MST, 50 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER CO 255 PM MDT TUE AUG 2 2005 .SHORT TERM...CONVECTION FIRING ACROSS MOUNTAINS AND ALONG FOOTHILLS AS WELL AS ALONG A BOUNDARY ACROSS ELBERT COUNTY. STORMS TRYING TO MOVE ONTO PLAINS BUT HAVING A OF BIT TROUBLE SUSTAINING THEMSELVES IN THE DRIER AND MORE STABLE AIR. WOULD EXPECT LOWER LEVELS TO MOISTEN A BIT AND BECOME MORE UNSTABLE ONCE OUTFLOW BOUNDARIES MOVE THROUGH. LATEST MODEL DATA STILL HINTING AT SOME TYPE OF CONVERGENCE ZONE NEAR NORTHERN COLORADO BORDER BY 00Z...THOUGH CURRENT DATA NOT SHOWING ANTHING. IT APPEARS NOW THAT FOCUS FOR DECENT CONVECTION WOULD BE WITH BOUNDARY OVER ELBERT COUNTY WHICH IS GRADUALLY MOVING NORTHWARD. FORECAST SOUNDINGS SHOW CAPES ACROSS PLAINS REACHING 1500 J/KG...LAPS ANALYSIS CERTAINLY HEADING IN THAT DIRECTION. THOUGH COVERAGE OF STORMS APPEAR MINIMAL...CANNOT RULE OUT A FEW STORMS GETTING CLOSE TO SEVERE...WITH MICROBURST WINDS THE BIGGEST THREAT. WILL LEAVE CURRENT POPS AS IS...WITH THE HIGHEST POPS OVER MOUNTAINS AND FOOTHILLS. CURRENT GPS INTEGRETED PRECIPITABLE WATER VALUES ARE NEARING AN INCH...SHOULD SEE SOME MEASURABLE RAINFALL. COULD BE SOME BRIEF HEAVY RAIN WITH A FEW OF THE STORMS...MAINLY ALONG THE FOOTHILLS. WEAK SHORTWAVE APPEARS TO BE OVER SOUTHERN UTAH AND SHOULD BE MOVING ACROSS WESTERN COLORADO THIS EVENING. DIV-Q PROGS SHOW THIS WAVE AFFECTING MOUNTAINS OVERNIGHT...THOUGH VERTICAL VELOCITY PROGS INDICATE MINIMAL LIFT. THERE MAY STILL BE SOME LINGERING SHOWERS OVER MOUNTAINS OVERNIGHT THOUGH THE MAJORITY OF CONVECTION SHOULD BE OVER WITH. ON WEDNESDAY...RIDGE REMAINS OVER SOUTHERN COLORADO WITH CONTINUED MOISTURE PLUME EXPECTED FROM THE SOUTHWEST. MODELS INDICATE ANOTHER SHORTWAVE WILL BE ROTATING ACROSS AREA BY THE AFTERNOON...WITH INCREASING LIFT NOTED BY VERTICAL VELOCITY PROGS AFTER 18Z. COMBINATION OF DAYTIME HEATING AND LIFT WILL CERTAINLY SUPPORT ANOTHER ROUND OF AFTERNOON CONVECTION. MODELS ALSO SHOWING COLD FRONT DROPPING INTO NORTHEAST COLORADO AROUND 18Z AS UPPER LEVEL TROUGH SLIDES ACROSS WYOMING. WITH UPSLOPE FLOW INCREASING ALONG FRONT RANGE DURING AFTERNOON...SCATTERED STORMS A POSSIBILITY ALONG THE URBAN CORRIDOR AND ADJACENT PLAINS WHICH FALLS IN LINE WITH THE FORECAST QPF. MADE SOME POP ADJUSTMENTS THERE. WITH FAIRLY LIGHT WINDS ALOFT AND UPSLOPE DEEPENING BY EVENING...STORMS COULD BE SLOW MOVING AND CAPABLE OF DUMPING SOME HEAVY RAIN. MAX TEMPS SHOULD BE A GOOD 10 DEGREES COOLER FROM TODAYS READINGS IN ANTICIPATION OF MORE CLOUD COVER AND CAA. LOWERED TEMPERATURE GRIDS SLIGHTLY ALONG FRONT RANGE. REST OF GRIDS LOOK GOOD. .LONG TERM...WEDNESDAY NIGHT...THE NAM SHOWS THE AMS SATURATING OVERNIGHT FOLLOWING THE PASSAGE OF A STRONG COLD FRONT IN THE AFTN. THE BEST QG OMEGA OCCURS AROUND 00Z THEN DECREASES THROUGH THE EVENING AS AN UPPER TROF MOVES THROUGH THE NORTHERN GREAT PLAINS. INTERACTIVE SOUDNINGS SHOW GOOD UPSLOPE AOB 700 MB WEDNESDAY EVENING WITH PW VALUES NEAR 1.2 INCHES. CAPES BY LATE IN THE AFTN SHOULD BE AROUND 1000 J/KG ALONG THE FRONT RANGE. THE QFP GENERATED BY BOTH THE NAM AND GFS FM 00Z-12Z THU INDICATE OVER 2 INCHES OF PCPN. THE NAMS FOCUSES MUCH OF THE PCPN ALONG THE FRONT RANGE WHEREAS THE GFS CARRIES SOME OF THE HEAVIER RAIN INTO THE NORTHEAST PLAINS. IN ANY EVENT...IT LOOKS VERY WET SO LIKELY POPS WILL REMAIN IN PLACE THROUGH WEDNESDAAY NIGHT. ON THURSDAY...ELY FLOW CONTINUES BUT IS MUCH WEAKER WITH ENOUGH MSTR AND INSTBY PRESENT ALONG THE FRONT RANGE FOR SCATTERED SHOWERS AND THUNDERSTORMS. OVER THE NORTHEAST PLAINS AMS APPEARS TO BE CAPPED SO WILL HEDGE WX MORE FOR SHOWERS THAN THUNDERSTORMS ON THURSDAY. H7 TEMPERATURES ARE STILL PROGGED TO BE AROUND 6C. GUIDANCE PARKS MAX TEMPERATURES IN THE LOW 70S AND THIS LOOKS REASONABLE. DRIER AMS DEVELOP THROUGH THE REMAINDER OF THE PERIOD WITH A DRIER MORE ZONAL FLOW OVR COLORADO. ALTHOUGH MOST OF THE MSTR WILL REMAIN SOUTH OF THE CWFA THERE MAY STILL BE ENOUGH TO WARRANT A SLIGHT CHANCE OF THUNDERSTORMS EACH AFTN AND EVENING. ANY CHANGES BEYOND THURSDAY WILL BE MINOR. && .BOU...NONE. && D-L/COOPER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1042 AM MDT TUE AUG 02 2005 COZ030>051-031200- 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- 1042 AM MDT TUE AUG 02 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER THE MOUNTAINS BY NOON AS MOISTURE STREAMS INTO COLORADO FROM THE WEST. THERE IS LESS MOISTURE ACROSS THE PLAINS...SO ONLY ISOLATED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON. ONE OR TWO THUNDERSTORMS MAY APPROACH SEVERE LIMITS WITH HAIL TO ONE INCH IN DIAMETER AND WIND GUSTS TO 60 MPH THE PRIMARY THREATS. LOCALIZED HEAVY RAIN IS ALSO POSSIBLE AND A FEW OF THE STORMS COULD PRODUCE UP TO AN INCH AND A HALF OF RAIN IN LESS THAN AN HOUR. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY A COLD FRONT IS EXPECTED TO MOVE ACROSS THE AREA WEDNESDAY AFTERNOON BRINGING INCREASED THUNDERSTORM ACTIVITY ON WEDNESDAY AND THURSDAY ...ESPECIALLY FOR AREAS IN AND NEAR THE FRONT RANGE FOOTHILLS AND PALMER DIVIDE. TEMPERATURES WILL BE MUCH COOLER AS WELL ON THURSDAY. WARMER WEATHER IS EXPECTED FOR THE WEEKEND WITH JUST A SLIGHT CHANCE OF THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. D-L/COOPER
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
A trained spotter located 1 mile southwest of Strasburg measured a non-thunderstorm wind gust of 60 mph.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2005Every state in 2005This day in weather historyWarnings in Colorado, August 2005
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: 5471515.