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 Aug 27, 2:00 PM MST, 24 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER CO 300 PM MDT SAT AUG 27 2005 .SHORT TERM...SCATTERED STORMS DRIFTING EWRD ACROSS PARK CTY AND THE SRN FRONT RANGE FOOTHILLS CRANKING OUT QUITE A BIT OF CG LIGHTNING. SPOTTER ALSO REPORTED SMALL HAIL WITH STORM PASSING OVR SRN JEFCO. MODEST QG ASCENT AND 8-9C/KM MID-LEVEL LAPSE RATES WITH SHORTWAVE TROUGH PASSING OVER CNTRL COLORADO ATTM SLOWLY PROPAGATES EWRD OVER THE ERN PLAINS OF COLORADO THIS EVENING. BIG QUESTIONS ARE HOW MUCH AND HOW LONG WILL LOW-LEVEL MOISTURE HANG AROUND. SFC DEW POINTS HAVE CONTINUED TO SLIDE THIS AFTERNOON AS VERY DRY AIR FILTERS IN FROM SRN WYOMING. CURRENT DEWPOINTS JUST NORTH OF THE CO/WY BORDER ONLY IN THE TEENS AND 20S. NOT MUCH BETTER IN WRN NEBRASKA. EARLIER TODAY LOOKED AS THOUGH T-STORM COVERAGE WOULD BE GREATER EAST OF A STERLING TO LIMON LINE WHERE NAM12 AND RUC SHOWED LATE AFTERNOON AND ERLY EVENING SFC BASED CAPE VALUES IN THE 200-2600 J/KG RANGE. LATEST CAPES OFF LAPS MODEL ONLY IN THE 800-1300 J/KG RANGE OUT THERE...AND EVEN THOSE NUMBERS SHOULD CONTINUE TO FALL AS DEWPTS DROP. WILL STICK WITH ISOLATED STORM COVERAGE THIS EVENING ON THE PLAINS WITH SHORTWAVE PASSING OVERHEAD...AND SCATTERED POPS OVER THE SRN FOOTHILLS AND PARK CTY WHERE STORMS HAVE BEEN ACTIVE PAST FEW HOURS. OVERNIGHT SKIES CLEAR FROM WEST-TO-EAST WITH DRYING ALOFT. ON SUNDAY...MID-LEVEL HIGH PRESSURE RIDGE OUT WEST NOSES ACROSS WYOMING AND NRN COLORADO CAUSING 700-400MB WINDS TO VEER AROUND FM NWLY TO A NELY COMPONENT DURING THE DAY. MODEL SOUNDINGS SHOW MID-LEVELS STRONGLY CAPPED AND LOWER HUMIDITIES ACROSS NERN COLORADO. HOWEVER...NELY SFC-700MB FLOW AND STEEP LAPSE RATES BY AFTERNOON SHOULD SUFFICE TO INITIATE AFTERNOON CONVECTION OVER THE SRN FRONT RANGE FOOTHILLS AND PALMER DIVIDE. AT THIS TIME WILL GO WITH ONLY 10 PCT POPS IN THESE AREAS. MAX TEMPS ON SUNDAY SHOULD BE SLIGHTLY BELOW THOSE OBSERVED TODAY. 700MB TEMP FCST TO BE ABOUT A DEG C LOWER TOMORROW. .LONG TERM...STRONG RIDGE ALOFT WILL BE BUILDING OVER THE REGION LATE SUNDAY THRU TUE AS 700MB TEMPS CONTINUE TO CLIMB TO NEAR +17C ON TUE WITH TEMPS WELL INTO THE 90S ACROSS EASTERN SXNS. THIS PERIOD LOOKS QUITE DRY AND VERY WARM WITH NO TS ACTIVITY...WITH THE ONLY EXCEPTION OF ISOLD TS OVER FAR SRN PERIPHERY SUN EVENING WITH LINGERING MSTR ACROSS THE SOUTH. THE CHANGE IN THE PATTERN WILL OCCUR ON WEDNESDAY AS NEXT PROGRESSIVE TROF BEGINS TO SWEEP ACROSS NRN PLAINS STATES AND ASSOCD COLD FRONT MOVES INTO REGION ON WED AM. COOLER WX ON WED/THU WITH SLOW WARMUP BEYOND INTO THE EARLY WEEKEND. MOST OF THE FORCING ALOFT WILL BE NORTH OF COLORADO BUT INCREASED LOW LVL MSTR WILL AT LEAST ADD A RETURN TO ISOLD ACTIVITY. WED MAY END UP BEING QUITE STABLE IN POST FRONTAL ENVIORNMENT OVER THE PLAINS WITH THU ENDING UP BEING THE BEST DAY FOR TS CHANCES AS SOME RETURN MSTR IN SERLY LOW LVL FLOW. HOWEVER...EVEN SUBTLE TIMING DIFFERENCES MAY EFFECT THE ABOVE SCENARIO AND WILL CONTINUE WITH A BROAD BRUSH ISOLD POPS OVER MUCH OF THE CWA. HAVE CONTINUED THE COOL DOWN BY MID WEEK...BUT MAY STILL NOT BE COOL ENOUGH. WILL HAVE TO DEPEND ON HOW MUCH STRATUS...IF ANY DEVELOPS AND KEEPS THINGS COOLER THAN ADVERTISED. && .BOU...NONE. && BAKER/ENTREKIN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1103 AM MDT SAT AUG 27 2005 COZ030>051-281200- 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- 1103 AM MDT SAT AUG 27 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT ISOLATED THUNDERSTORMS WILL BEGIN FORMING OVER THE FRONT RANGE BY MIDDAY BEFORE DRIFTING EAST OVER THE INTERSTATE 25 URBAN CORRIDOR BETWEEN 12:30 AND 2 PM TODAY. THESE THUNDERSTORMS SHOULD BE HIGH BASED...AND THEREFORE MORE LIKELY TO PRODUCE GUSTY OUTFLOW WINDS AND LIGHTNING...BUT LITTLE IF ANY RAINFALL. AS THESE THUNDERSTORMS MOVE EAST ACROSS NORTHEAST COLORADO INTO A MOIST AND UNSTABLE ATMOSPHERE...STORM CHANGES WILL INCREASE WITH A FEW STORMS POSSIBLY BECOMING SEVERE AFTER 5 PM TODAY. LARGE HAIL AND DAMAGING WINDS WILL BE THE MAIN SEVERE WEATHER THREAT. THUNDERSTORM ACTIVITY SHOULD END BY MID-EVENING...EXCEPT IN LINCOLN...WASHINGTON...SEDGWICK AND PHILLIPS COUNTIES WHERE A FEW STORMS CAPABLE OF LOCALLY HEAVY RAINFALL AND HAIL MAY LINGER A FEW HOURS BEYOND MIDNIGHT. AN UPPER AIR DISTURBANCE PASSING OVER THE NORTHERN MOUNTAINS OF COLORADO LATE THIS MORNING AND AN UNSTABLE ATMOSPHERE ON THE PLAINS WILL COME TOGETHER TO PRODUCE THE THUNDERSTORMS EXPECTED LATER TODAY. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. BAKER/ENTREKIN
The Denver radar (KFTG), 61 km away, was scanning. The volume nearest the first event began at 21:26 UTC.
1 lightning. Local standard time, as filed.
Lightning struck an unoccupied home in Parker. The fire caused damage to the roof, attic and second floor bedroom.
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: 5471512.