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 28, 1:15 AM MST, 11 hours 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER CO 215 AM MDT SUN AUG 28 2005 .SHORT TERM...THERE IS A BIT MORE LOW LEVEL MOISTURE THIS MORNING THAN YESTERDAY. HOWEVER...WITH RIDGE BUILDING UPSTREAM LOW/MID LEVEL FLOW WILL BECOME MORE NLY WHICH WILL BE BRINGING IN QUITE DRY AIR AGAIN. LOW LEVEL MOISTURE SHOULD MIX OUT ONCE AGAIN. STILL MAY BE ENOUGH TO PRODUCE WEAK CONVECTION OVER THE CENTRAL MOUNTAINS AND PALMER DIVIDE...BUT IF THERE IS ANYTHING IT WILL DRIFT SOUTH OUT OF OUR AREA. FORECAST TEMPERATURES THE SAME OR SLIGHTLY WARMER THAN YESTERDAY LOOK GOOD. DROPPED MOUNTAIN LOWS A BIT AGAIN WITH THE DRY AIR AND QUICK CLEARING. .LONG TERM...THE UPPER RIDGE AXIS IS OVER THE FORECAST AREA MONDAY AND MONDAY NIGHT. THE RIDGE FLATTENS OUT QUITE A BIT TUESDAY WITH A PRETTY STRONG UPPER TROUGH MOVING EASTWARD NORTH OF US. THE JET LEVEL FLOW IS WEAK...THEN IT INCREASES BY TUESDAY AND TUESDAY EVENING...WITH A BIT OF THE BOTTOM OF THE TROUGH AXIS PUSHING ACROSS TUESDAY OVERNIGHT. THE QG VERTICAL VELOCITY FIELDS HAVE WEAK DOWNWARD MOVING AIR MONDAY ...THEN DECENT UPWARD MOTION TUESDAY AND TUESDAY EVENING. IN THE LOWER LEVEL...THE PRESSURE GRADIENT IS WEAK MONDAY...WITH DECENT SOUTHERLY FLOW MONDAY OVERNIGHT. NORMAL DIURNAL BOUNDARY LAYER FLOW IS EXPECTED TUESDAY...WITH A SIGNIFICANT SURGE OF UPSLOPE EXPECTED TUESDAY EVENING BY 06Z. MOISTURE-WISE... MONDAY AND MONDAY NIGHT ARE PRETTY DRY. BY TUESDAY AFTERNOON THE MID AND UPPER LEVELS HAVE INCREASING MOISTURE. THE THETA-E AXIS IS WELL EAST OF THE FORECAST AREA MONDAY. BY TUESDAY AFTERNOON...A BIT OF THE AXIS IS OVER THE FAR NORTHEAST CORNER. VERY LITTLE CAPE IS INDICATED FOR LATE DAY MONDAY AND ITS OVER THE FAR NORTHEAST CORNER. HOWEVER THERE IS MORE BY TUESDAY LATE IN THE DAY...BUT STILL NOTHING SIGNIFICANT. WILL LEAVE BOTH MONDAY AND TUESDAY LATE DAYS DRY. FOR TEMPERATURES...MONDAY AND TUESDAY STAY WARM...SIMILAR OR SLIGHTLY WARMER THAN TODAY. WILL LEAVE THE LATER FOUR DAYS ALONE WITH THE EXCEPTION OF COOLING WEDNESDAYS HIGHS A BIT. && .BOU WATCHES/WARNINGS/ADVISORIES...NONE. && GIMMESTAD/KOOPMEINERS
HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE DENVER CO 1112 AM MDT SUN AUG 28 2005 COZ030>051-291200- 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- 1112 AM MDT SUN AUG 28 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT A DRY AND STABLE AIRMASS UNDER THE INFLUENCE OF HIGH PRESSURE AT THE SURFACE AND ALOFT WILL SUPPRESS THUNDERSTORM FORMATION IN ALL BUT THE HIGHER TERRAIN OF THE TARRYALL AND RAMPART RANGES...SOUTHERN PORTIONS OF THE FRONT RANGE AND FOOTHILL AREAS IN JEFFERSON...CLEAR CREEK...GILPIN...PARK AND DOUGLAS COUNTIES. GUSTY DOWNDRAFT WINDS AND LIGHTNING WILL BE THE PRINCIPLE THREAT WITH THESE HIGH BASED MOSTLY DRY STORMS. THESE THUNDERSTORMS SHOULD DISSIPATE QUICKLY SOON AFTER SUNSET. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY DRY AND WARM CONDITIONS WILL EXIST ON MONDAY AND MUCH OF TUESDAY... THEN A COLD FRONT WILL MOVE ACROSS EASTERN COLORADO TUESDAY NIGHT WITH COOLER TEMPERATURES AND ISOLATED SHOWERS AND THUNDERSTORMS ON WEDNESDAY. THROUGH THE END OF THE WEEK...LOOK FOR ISOLATED AFTERNOON AND EVENING THUNDERSTORMS AND NEAR SEASONABLE TEMPERATURES. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. BAKER/ENTREKIN
The Denver radar (KFTG), 77 km away, was scanning. The volume nearest the first event began at 19:56 UTC.
1 lightning. Local standard time, as filed.
Lightning sparked a small fire near Jamestown. The blaze was quickly contained and consumed less than an acre.
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: 5471511.