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 Jun 19, 2:20 PM MST, 50 minutes earlier.
NORTHEAST AND NORTH CENTRAL COLORADO AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER CO 320 PM MDT THU JUN 19 2003 SHORT TERM DISCUSSION...NUMEROUS SLOW MOVING THUNDERSTORMS NOW MOVING OFF HIGHER TERRAIN INTO URBAN CORRIDOR. MOIST UNSTABLE ATMOSPHERE WITH 0.90 PW...LIGHT WINDS...WILL KEEP TSTMS MOVG SLOWLY...DRIVEN BY BOUNDARY INTERACTION. MORE LOCAL FLOODING OF ROADS/ SMALL STREAMS LIKELY TNGT FROM THE SLOW MOVING STORMS. ACTIVITY WILL LINGER TO LATE AND FINALLY DIE OUT ON PLAINS AFTER MIDNIGHT. EXPECT SOME LOW CLOUDS AND PATCHY FOG TO DEVELOP LATE. TOMORROW THERE WILL BE SOME INCREASE IN SWLY FLOW ALFT...AND DEWPTS IN THE URBAN CORRIDOR AND FOOTHILLS WILL BE LOWER THAN TODAY. MOISTURE WILL ERODE EWD SLOWLY...AND AMS WILL STILL BE UNSTABLE TOMORROW...ETA INDICATES 2000+ CAPES ON THE PLAINS SO HAVE UPPED POPS ACROSS THE CWA FOR TOMORROW AFTN. RTG LONG TERM DISCUSSION...A SHIFT IN THE WEATHER PATTERN APPRS TO BE IN THE OFFING. ETA AND GFS BOTH AGREE ON PLACING CO UNDER PERSISTENT SWLY FLOW ALOFT THROUGH THE MIDDLE OF NEXT WEEK. TMRW NIGHT WL BEGIN WITH THE END OF TMRW AFTNS CONVECTIVE EVENT WITH SHOWERS AND T-STORMS OVR THE ERN PLAINS. THE CONVECTION WILL BE DRIVEN BY A PASSING UPR SHORT WAVE AND WILL HAVE MORE FAVORABLE SHEAR THAN WE HAVE SEEN OVER THE PAST SEVERAL DAYS. THEREFORE...STRONG STORMS WL BE PSBL. AFTER TOMORROW...THE SWLY FLOW ALOFT WL KEEP A GENERALLY DRY AMS OVR THE FCST AREA. HOWEVER...MID LVL MSTR MAY BE ENTRAINED IN THE SOUTHWESTERLY FLOW PRODUCING AFTN SHOWERS OVR THE MTNS. FOR THE MOST PART...AREA WL SEE GENERAL WARMING TREND WITH THE WARMEST DAYS MON AND TUES. GFS INDICATES A COLD FRONT MOVG INTO NE CO NEXT WED NIGHT...SO COOLER TEMPS ARE FCST FOR THURS. HAVE LEFT WED AND THURS FCST DRY FOR NOW SINCE IT IS DIFFICULT TO GAUGE HOW MUCH MSTR WILL BE PRESENT AT THAT TIME. KDRBY .DEN...NONE.
COZ030>051-192200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 1105 AM MDT THU JUN 19 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS WILL AGAIN DEVELOP OVER THE FOOTHILLS EARLY THIS AFTERNOON...AND SPREAD TO THE PLAINS BY LATE AFTERNOON. SHOWERS WILL THEN CONTINUE WELL INTO THE EVENING. THE AIRMASS REMAINS SATURATED AND UNSTABLE TODAY WITH LIGHT WINDS ALOFT. DEWPOINTS IN THE MID 50S ON THE PLAINS AND SOUTHEAST WINDS AT 10 TO 15 MPH WILL HELP SUSTAIN THUNDERSTORMS WITH ENHANCED INFLOW. CLOSER TO THE FOOTHILLS THIS AFTERNOON...DEWPOINTS WILL HOVER AROUND 50 DEGREES. THIS ALL BOILS DOWN TO SLOW MOVING THUNDERSTORMS CAPABLE OF DROPPING 1 TO 2 INCHES OF RAIN IN AN HOUR. A FLASH FLOOD WATCH WAS CONSIDERED AND MAY STILL BE NEEDED LATER THIS AFTERNOON. AT THIS TIME...NEITHER MAJOR FLOODING OR WIDESPREAD FLOODING IS EXPECTED. HOWEVER...SOME LOCAL FLOODING WILL BE POSSIBLE THIS AFTERNOON...WITH THE TWO AREAS OF GREATEST CONCERN BEING THE HAYMAN BURN...AND ALONG AND NEAR THE FOOTHILLS OF LARIMER AND BOULDER COUNTIES...WHERE OVER AN INCH OF RAIN FELL LAST NIGHT. SEVERE WEATHER WILL ALSO BE ISOLATED WITH A FEW STORMS CAPABLE OF PRODUCING 1 INCH HAIL. STORMS WILL LINGER WELL INTO THE EVENING...ENDING LATE WITH AREAS OF LOW CLOUDS AND FOG DEVELOPING OVERNIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE FRIDAY...MAINLY ON THE PLAINS. STORMS WILL AGAIN BE CAPABLE OF PRODUCING HEAVY RAIN AND MAY ALSO BECOME SEVERE AT TIMES. THE UPPER LEVEL PATTERN ACROSS COLORADO WILL SHIFT TO A DRIER... SOUTHWESTERLY FLOW BY SATURDAAY WHICH WILL CONTINUE THROUGH MUCH OF NEXT WEEK. NO HAZARDOUS WEATHER IS EXPECTED AFTER FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TO MONITOR RAINFALL AND RUNOFF AFTER 2 PM. RTG/DANKERS
The Denver radar (KFTG), 61 km away, was scanning. The volume nearest the first event began at 22:09 UTC.
1 flash flood. Local standard time, as filed.
Heavy rain caused flash flooding problems near the Hayman burn area. Flooding occurred at the YMCA Shady Brook Camp south of Deckers. The only access road to the camp site was washed out by floodwaters and closed temporarily.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2003Every state in 2003This day in weather historyWarnings in Colorado, June 2003
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: 5367643.