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 May 14, 1:00 PM MST, 2 hours 4 minutes earlier.
NORTHEAST AND NORTH CENTRAL COLORADO AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER COLORADO 200 PM MDT MON MAY 14 2001 SHORT TERM DISCUSSION: WESTERLY FLOW ALOFT WITH WEAK UPPER LEVEL DISTURBANCE MOVING ACROSS EASTERN COLORADO LATE THIS AFTERNOON INTO TONIGHT. SUBTROPICAL MOISTURE OVER THE MOUNTAINS WILL SHIFT ACROSS THE CWA TONIGHT AS THE SYSTEM MOVES EAST. CURRENT FCST OF SCT TSTM COVERAGE IN THE MOUNTAINS WITH ISOLD CONVECTION OVER MOST THE NORTHEAST PLAINS LOOKS GOOD. WILL ALSO ADD SOME WESTERLY WINDS TO THE MOUNTAINS AND FOOTHILLS OVERNIGHT. WILL ALSO ADD SOME WIND IN THE NORTHEAST CORNER FOLLOWING THE PASSAGE OF THE SURFACE TROUGH. COOPER LONG TERM DISCUSSION: PRETTY GOOD BATCH OF SUBSIDENCE MOVING OVER THE STATE TUESDAY BEHIND TONIGHTS SHORT WAVE. FORECAST SOUNDINGS INDICATE NICE SUBSIDENCE INVERSION SO NO STORMS TOMORROW. TEMPS QUITE WARM...BUT DOUBT ANY RECORDS AS THERE IS A HINT OF COLD ADVECTION TO OFFSET INCREASED DOWNSLOPE FLOW. GRIDS AND GUIDANCE SUGGEST MID 80S IN DENVER AND SEE NO REASON TO ARGUE. SOME HIGH LEVEL MOISTURE WILL BEGIN TO PUSH IN BY LATE AFTERNOON...BUT AT THIS TIME SHOULD NOT BE ENOUGH TO WARRANT ANYTHING LESS THAN MOSTLY SUNNY. ON WEDNESDAY...SOME MID LEVEL MOISTURE COMES IN AHEAD OF THE NEXT WEAK TROF SO WILL HAVE PARTLY CLOUDY ON THE PLAINS AND ADD SOME ISOLATED POPS TO THE MOUNTAINS AS INSTABILITY INCREASES. FOR THE EXTENDED...AVN AND MRF ARE QUICKER WITH THE FRONT NOW BRINGING IT IN THURSDAY. WITH ALL THE FLOW AND WEAK SHORT WAVE MOVING ACROSS THE NORTHERN PLAINS...CANT ARGUE WITH THIS AS SOME SORT OF A SURGE ALWAYS SEEMS TO REACH COLORADO. WILL HAVE COOLER TEMPS AND CHANCE OF SHOWERS AND THUNDERSTORMS FOR THE EXTENDED PERIOD WITH BEST CHANCE ON FRIDAY AS WEAK SHORT WAVE MOVES THROUGH. THEN A RIDGE DEVELOPING TOWARD LATE IN THE WEEKEND AND EARLY NEXT WEAK SO EuXPECT MODERATING TEMPS AND LESS CHANCE OF STORMS. BARJENBRUCH .DEN...NONE.
The Denver radar (KFTG), 61 km away, was scanning. The volume nearest the first event began at 22:02 UTC.
1 lightning. Local standard time, as filed.
A construction worker received minor injuries when he took an indirect lightning strike.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2001Every state in 2001This day in weather historyWarnings in Colorado, May 2001
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: 5250064.