1 flash flood, 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 25, 1:45 PM MST, 2 hours 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER CO 245 PM MDT TUE JUL 25 2006 .SHORT TERM DISCUSSION...TNGT...WEAK SHORTWAVE CURRENTLY MOVING INTO NORTHWEST COLORADO. AIRMASS UNSTABLE AHEAD OF WAVE...WITH NEIGHBORING RADARS SHOWING SCATTERED CONVECTION OVER MOUNTAINS AND FOOTHILLS SPREADING ACROSS ADJACENT PLAINS. CURRENT PRECIPITABLE WATER VALUES INCREASED TO AROUND 1.25 INCHES ACROSS THE PLAINS... COULD SEE SOME LOCALLY HEAVY RAIN. BUT CONVECTION PUSHING STEADILY EASTWARD... SO NOT TOO CONCERNED ABOUT SLOW-MOVING STORMS. STORMS WILL CONTINUE MOVE ACROSS REMAINDER OF PLAINS THIS EVENING AS SHORTWAVE CONTINUES TO MOVE EASTWARD. CURRENT SCATTERED POPS LOOK ON TRACK AS THERE APPEARS TO BE A LACK OF A LOW LEVEL FOCUS TO WARRANT AN INCREASE IN COVERAGE. SHORTWAVE TO EXIT THE REGION AROUND MIDNIGHT...SHOULD SEE MOST OF THE CONVECTION END AT THAT TIME. NAM KEEPS SOME LIGHT QPF ACROSS PLAINS AFTER MIDNIGHT... BUT ALSO INDICATES WEAK QG DESCENT. WILL KEEP THINGS DRY OVERNIGHT. ON WEDNESDAY...AIRMASS WILL REMAIN FAIRLY MOIST...AS PRECIPITABLE WATER VALUES HOVER BETWEEN 1 AND 1.30 INCHES ACROSS THE PLAINS. MODELS SHOW A WEAK SHORTWAVE MOVING ACROSS THE AREA DURING THE AFTERNOON. EXPECT AIRMASS TO BECOME MARGINALLY UNSTABLE BY THE AFTERNOON. SHOULD SEE CONVECTION FIRST FIRE OVER THE HIGHER TERRAIN THEN GRADUALLY SPREAD ACROSS THE PLAINS. AMOUNT OF CONVECTION IN QUESTION...AS FORECAST SOUNDINGS SHOW SOME CIN LINGERING ACROSS PLAINS. CURRENT POPS LOOK REASONABLE FOR NOW...WILL MAKE A MINOR ADJUSTMENT TO THE PLAINS. NO CHANGE TO TEMPERATURE GRIDS. .LONG TERM DISCUSSION...HOT HIGH PRESSURE RIDGE ALOFT PASSING OVER THE GREAT BASIN ON THURSDAY MAKES ITS WAY EASTWARD ACROSS THE ROCKY MTN REGION OVER THE WEEKEND. HOTTEST AIR ALOFT NEAR CENTER OF THE RIDGE WITH 700 MB TEMPS UP AROUND 21C. THERMAL RIDGE AXIS NOW PROGGED OVER THE FRONT RANGE AND NERN PLAINS OF COLORADO ON SATURDAY. GFS MOS TEMP GUIDANCE INDICATING A MAX TEMP OF 100F AT DENVER ON SATURDAY AND A 98F ON SUNDAY. REALLY CAN/T ARGUE WITH THESE READINGS. RECORD HIGHS AT DENVER: 99F ON SATURDAY AND 101F ON SUNDAY. MAX TEMP READINGS FARTHER OUT ACROSS THE PLAINS EVEN HOTTER...PROBABLY AS MUCH AS 3-6 DEG F ABOVE THOSE OBSERVED ALONG THE FRONT RANGE. WILL ALSO SEE A STEADY DECLINE IN PRECIPITABLE WATER VAPOR DURING THE PERIOD WITH VALUES FALLING BELOW 0.75 INCH BY 00Z/SUNDAY. AS MID-LEVELS WARM AND STABILIZE SHOULD SEE A CORRESPONDING REDUCTION IN CONVECTION...WITH THE CHANCE FOR T-STORMS ON THE PLAINS BOTH FRIDAY AND SATURDAY NEXT TO NOTHING. HOWEVER WILL KEEP A SLIGHT CHANCE OF AFTERNOON/EVENING T-STORMS OVER THE MTNS AND FOOTHILLS THROUGH FRIDAY...BUT SEE CHANCES LOWERING TO NEAR ZERO BY SATURDAY. SUNDAY AND BEYOND...MODELS GENERALLY SHOW THE UPPER RIDGE WEAKENING AND ITS AXIS SLOWLY SHIFTING EAST OF THE AREA BY MONDAY. TEMPS ALOFT COOL SLIGHTLY AND PRECIPITABLE WATER VALUES GRADUALLY RISE AS DEEPENING SWLY FLOW ON BACKSIDE OF RIDGE ACTS LIKE A CONVEYOR BELT TO TRANSPORT SUBTROPICAL MONSOONAL MOISTURE UP FROM THE DESERT SOUTHWEST. INITIALLY MOST OF THIS MOISTURE RICH AIR APPEARS TO REMAIN WEST OF THE CONTINENTAL DIVIDE SUNDAY AND MONDAY...BUT BY TUESDAY...AS FLOW ALOFT BECOMES MORE SOUTHERLY ORIENTED...COULD SEE MORE OF THIS MOISTURE MAKING ITS WAY UP THE FRONT RANGE AND ACROSS THE NERN PLAINS OF COLORADO. FOR THIS REASON WILL RAISE POPS SLIGHTLY TO REFLECT THIS TREND. SHOULD ALSO SEE A GRADUAL DECLINE IN DAYLIGHT TEMPS DURING THIS PERIOD...WHILE OVERNIGHT LOWS SHOULD REMAIN QUITE MILD WITH THE HIGHER SPECIFIC HUMIDITIES. && .BOU WATCHES/WARNINGS/ADVISORIES...NONE. && DL/BAKER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1107 AM MDT TUE JUL 25 2006 COZ030>051-261200- 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- 1107 AM MDT TUE JUL 25 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER THE MOUNTAINS...SPREADING ACROSS THE PLAINS DURING THE AFTERNOON AND EARLY EVENING. SOME OF THE STORMS COULD PRODUCE LOCALLY HEAVY RAIN ALONG THE EAST SLOPES OF THE MOUNTAINS AND OVER THE URBAN CORRIDOR. A MOIST AND UNSTABLE AIRMASS WILL COMBINE WITH A WEAK UPPER LEVEL DISTURBANCE TO PRODUCE THE SHOWERS AND STORMS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY HIGH PRESSURE RIDGE BUILDING OVER THE REGION WILL BRING DRIER AND WARMER CONDITIONS TO THE OUTLOOK AREA THROUGH SATURDAY...WITH DAYTIME TEMPERATURES ON THE PLAINS HOVERING AROUND THE CENTURY MARK LATE IN THE WEEK. DURING THIS PERIOD ONLY ISOLATED THUNDERSTORMS ARE EXPECTED AND MAINLY OVER THE MOUNTAINS AND HIGHER FOOTHILLS. BY LATE IN THE WEEKEND...ANTICIPATE A RETURN TO HIGHER HUMIDITIES AS WELL AS AN INCREASE IN AFTERNOON AND EVENING THUNDERSTORMS. LOOK FOR THE HIGH PRESSURE RIDGE TO WEAKEN AND SHIFT EAST ALLOWING MONSOONAL MOISTURE TO FLOW UP FROM THE DESERT SOUTHWEST. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. D-L/BAKER
The national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
Heavy rain caused flash flooding 1 mile north of Westcreek. Several maintenance roads were washed out by floodwaters.
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: 5525062.