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 3, 12:35 AM MST, 11 hours 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER CO 135 AM MDT MON JUL 3 2006 .SHORT TERM DISCUSSION...TDA-TNGT...UPR RDG OVER WRN U.S. WILL CONT TO ENTRAIN TROPICAL MID AND HI LVL MONSOONAL MSTR NWD AND SPRD IT INTO THE CNTRL RCKYS. A WK SURGE OVER THE PLAINS WILL KEEP THE AMS THERE MOIST IN THE LO LVLS WITH DWPTS IN THE 50S. WK LO LVL UPSLP FLO WILL ENHANCE TSTM DVLPMT ALG ERN SLP MTNS. CAPES OVER THE PLAINS AND URBAN CORRIDOR RANGE FM 600-1050J/KG THIS AFTN AND EVE. THE ONLY MISSING INGREDIENT IS A GUD SHORT WV OF THE DAY TO PROVIDE ADDITIONAL LIFT. PRECIPITIBLE WATERS RMN ARND AN INCH...SO TSTMS WILL AGN PRODUCE LCLY HVY RAINFALL ALG ERN SLPS AND OVER PLAINS. WITH SURGE OVR PLAINS MAX TEMPS WILL BE A LTL COOLER THAN YSTRDY. WILL MAKE ONLY SML ADJSTMTS TO MOS TEMP GDNC VALUES WHICH APPEAR TO BE ON TRACK. .LONG TERM DISCUSSION...ON TUESDAY...THE UPPER RIDGE AXIS WILL BE WEST OF COLORADO WITH A WEAK WEST-NORTHWESTERLY FLOW OVER THE CWFA. INTERACTIVE SOUNDINGS NOT VERY IMPRESSIVE WITH CAPES OF 500-1000 J/KG IN THE AFTERNOON...BUT SOME CIN AS WELL. THE STORMS THAT DO DVLP WL LIKELY BE LATER IN THE DAY. IT WILL BE A LITTLE WARMER VS MONDAY AS WELL. A SURGE ASSOCIATED WITH A DISTURBANCE PASSING TO THE N AND E OF COLORADO WILL SLIP INTO THE NERN PLAINS DURING THE EVENING...AND THIS COULD ACT AS A FOCUS FOR SOME SHOWERS OR TSTMS TUESDAY NIGHT. ON WEDNESDAY...THE RIDGE AXIS SHIFTS OVER COLORADO. ANOTHER DISTURBANCE IS PROGGED TO MOVE UP THE WEST SIDE OF THE RIDGE AXIS WEDNESDAY...WITH SOME WEAK QG ASCENT ASSOCIATED WITH IT...MOVING ACROSS WEDNESDAY NIGHT INTO THURSDAY MORNING. CAPES ON WEDNESDAY ARE IN THE 1000-1500 J/KG RANGE WITH PW VALUES AROUND 1 INCH. COULD SEE A FAIR AMOUNTS OF NOCTURNAL CONVECTION WEDNESDAY NIGHT. IT WILL BE A BIT COOLER AS WELL ON WEDNESDAY...SO I SHAVE A COUPLE OF DEGREES OFF THE EXPECTED HIGHS. LOOKS LIKE A VERY MOIST AMS WILL REMAIN IN PLACE ON THURSDAY. CLOUD COVER AND PCPN MAY AGAIN IMPACT TEMPERATURES ON THURSDAY. ON FRIDAY AND SATURDAY...THE UPPER RIDGE CENTERS ITSELF OVER OKLAHOMA WHICH IS THE BEST LOCATION FOR OUR MONSOON. MOST OF THE MSTR LOOKS TO BE OVER WRN COLORADO SO WL KEEP THE BEST POPS OVER THE HIGHER TERRAIN BOTH DAYS. THIS ALREADY REFLECTED IN THE GRIDS SO NO CHANGES THERE. && .BOU WATCHES/WARNINGS/ADVISORIES...NONE. && GARD/COOPER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1048 AM MDT MON JUL 03 2006 COZ030>051-041200- 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- 1048 AM MDT MON JUL 03 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER THE MOUNTAINS AND FOOTHILLS BY NOON AND SPREAD OVER THE URBAN CORRIDOR AND PLAINS BY MID AFTERNOON. THE FLOW ALOFT REMAINS FAIRLY WEAK AND THE AIR MASS OVER THE FORECAST AREA IS MOISTURE LADEN. AS A RESULT...THE SHOWERS AND THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL. OF NOTE...YESTERDAYS THUNDERSTORMS PRODUCED GENERALLY 1.0 - 2.5 INCHES OF RAINFALL OVER AREAS OF NORTH CENTRAL DOUGLAS... SOUTHEASTERN DOUGLAS...WESTERN ARAPAHOE...NORTH CENTRAL ADAMS... NORTHEASTERN MORGAN...NORTHWESTERN WASHINGTON...AND WESTERN LOGAN COUNTIES. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY SHOWERS AND THUNDERSTORMS ARE EXPECTED TUESDAY AND WEDNESDAY DURING THE AFTERNOON AND EVENING HOURS AS LOW LEVEL UPSLOPE FLOW EAST OF THE CONTINENTAL DIVIDE WILL KEEP THE AIRMASS RELATIVELY MOIST AND UNSTABLE. DUE TO THE WEAK FLOW ALOFT IN THE ATMOSPHERE THE THREAT OF SEVERE THUNDERSTORMS WILL BE LOW. HOWEVER WITH WEAK WINDS ALOFT THE STORMS WILL BE SLOW MOVING AND MAY PRODUCE LOCALLY HEAVY RAINFALL IN SOME AREAS. BY THURSDAY AND FRIDAY SOME DRIER AIR MAY MOVE INTO THE AREA WITH THUNDERSTORM ACTIVITY BECOMING MORE WIDELY SCATTERED DURING THE AFTERNOON AND EVENING HOURS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. KOOPMEINERS/RPK
The Denver radar (KFTG), 139 km away, was scanning. The volume nearest the first event began at 19:22 UTC.
1 lightning. Local standard time, as filed.
A man was hit in the head by lightning while golfing at the Grand Elk Ranch and Golf Club golf course in Granby. His clothes were completely blown off by the blast and his body turned purple. His wife performed CPR immediately and was able to resuscitate him.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2006Every state in 2006This day in weather historyWarnings in Colorado, July 2006
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: 5528299.