Spring runoff from an above normal snowpack, combined with a period of heavy rainfall, caused the Cache la Poudre River; at the canyon mouth of above Ft Collins and another river gage near Greeley; to rise above flood stage. Five roads were closed near bridges crossing the river including: Fern, 71st, 83rd and 95th Avenues, along with Weld County Road 13.
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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 episode as NWS BOU wrote it up.
Spring runoff from an above normal snowpack, combined with a period of heavy rainfall, caused the Cache la Poudre River; at the canyon mouth of above Ft Collins and another river gage near Greeley; to rise above flood stage. Five roads were closed near bridges crossing the river including: Fern, 71st, 83rd and 95th Avenues, along with Weld County Road 13.
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 25, 8:24 PM MST, 1 hour 21 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER/BOULDER CO 924 PM MDT SUN MAY 25 2014 .UPDATE... ISSUED AT 858 PM MDT SUN MAY 25 2014 SHOWER AND THUNDERSTORM ACTIVITY HAS RAPIDLY DIMINISHED OVER MUCH OF THE CWA THIS EVENING. THE EXCEPTION IS OVER LINCOLN AND EASTERN ELBERT COUNTIES WHERE ACTIVITY HAS INCREASED AGAIN AS WEAK IMPULSE IS ROTATING AROUND THE UPPER LOW OVER FAR NORTHERN NEW MEXICO. CAN'T RULE OUT SOME CONTINUED SHOWER ACTIVITY THRU MUCH OF THE NIGHT ESPECIALLY OVER SOUTHEAST PORTIONS OF CWA. WILL UPDATE ZONES TO FAVOR THESE AREAS. && .SHORT TERM...(THIS EVENING THROUGH MONDAY) ISSUED AT 155 PM MDT SUN MAY 25 2014 UPPER LEVEL LOW OVER SOUTHWEST COLORADO WILL SLOWLY DRIFT SOUTHEAST TONIGHT AND MONDAY. SOUTHERLY FLOW ALOFT AHEAD OF IT HAS BROUGHT DRIER AIR TO EASTERN COLORADO. ALONG THE FRONT RANGE...THE AIRMASS REMAINS MOIST WHERE PRECIPITABLE WATER VALUES ARE AROUND THREE QUARTERS OF AN INCH. CAPES ARE UP TO 2000 J/KG ALONG THE FRONT RANGE...BUT LESS THAN 500 J/KG OVER SOUTHEASTERN COLORADO. ALREADY SEEING A GOOD NUMBER OF STORMS FORMING OVER THE FOOTHILLS AND MOVING WEST. EXPECT ADDITIONAL DEVELOPMENT THROUGH EARLY EVENING OVER THE MOUNTAINS...FOOTHILLS AND FRONT RANGE. WILL HAVE HIGHEST POPS THROUGH THE EARLY EVENING HOURS FOR THE FOOTHILLS AND AREAS NEAR BY. THE DRIER AIR OVER THE PLAINS WILL LIMIT CONVECTION AND WILL JUST HAVE ISOLATED POPS. EVEN THOUGH SHEAR IS WEAK...WITH CAPES UP TO 2000 J/KG...COULD SEE A BRIEF SEVERE STORM WITH HAIL UP TO ONE INCH. IF STORMS PERSIST OVER AN AREA...FLASH FLOODING WILL BE POSSIBLE. STORMS ARE EXPECTED TO DECREASE BY MID EVENING AS THE AIRMASS STABILIZES. WILL KEEP LOW POPS IN THROUGH THE NIGHT WITH THE UPPER LEVEL LOW NEAR BY...BUT MOST LOCATIONS SHOULD STAY DRY. AIRMASS WARMS TOMORROW AS THE LOW DIPS SOUTH. HIGHS WILL CLIMB INTO THE 70S ACROSS NORTHEAST COLORADO. MOISTURE AND INSTABILITY DECREASE...BUT ENOUGH WILL PREVAIL FOR ISOLATED TO SCATTERED AFTERNOON STORMS. COVERAGE WILL BE LESS AND THAN TODAY. THREAT FOR SEVERE STORMS AND FLASH FLOODING WILL BE LOWER TOO. .LONG TERM...(MONDAY NIGHT THROUGH SUNDAY) ISSUED AT 341 PM MDT SUN MAY 25 2014 LITTLE CHANGE IN FORECAST THINKING FOR THE WEEK AHEAD. AFTER THE UPPER LOW FINALLY MOVES TO THE SOUTHERN PLAINS MONDAY NIGHT...AN UPPER RIDGE WILL BUILD OVER THE DESERT SOUTHWEST AND COLORADO. FLOW ALOFT WILL BECOME MORE WESTERLY AND WARMER TEMPERATURES ALOFT WILL BRING SOME STABILITZATION TO THE ATMOSPHERE. MORE BENIGN WEATHER SHOULD PREVAIL FOR THE TUESDAY THROUGH THURSDAY TIME FRAME. TEMPERATURES WILL ALSO WARM TO ABOVE SEASONAL NORMALS...INTO THE MID 80S ACROSS THE PLAINS. THIS MAY LEAD TO A SLIGHT RISE IN THE SNOWMELT RUNOFF. FOR THE END OF THE WEEK...IT LOOKS LIKE A RETURN TO DEEP SOUTHERLY FLOW ALOFT AS AN UPPER TROUGH DEVELOPS OVER THE WEST COAST. THE SOUTHERLY FLOW WILL TRANSPORT BOTH GULF OF MEXICO AND EASTERN PACIFIC MOISTURE ACROSS NEW MEXICO AND COLORADO. WILL BE KEEPING AN EYE ON THE REMNANTS OF HURRICANE AMANDA THROUGH THE WEEK TO SEE IF MOISTURE FROM THAT STORM GETS DRAWN INTO THE EASTERN PACIFIC MOISTURE FLOW. FOR NOW HAVE POPS INCREASING FOR FRIDAY AND SATURDAY ALONG WITH COOLER TEMPERATURES...AT LEAST PARTLY DUE TO THE ANTICIPATED INCREASE IN CLOUD COVER THROUGH NEXT WEEKEND. && .AVIATION...(FOR THE TAFS THROUGH 06Z MONDAY EVENING) ISSUED AT 858 PM MDT SUN MAY 25 2014 WITH SURFACE LOW OVER SOUTHEAST COLORADO MAY CONTINUE TO SEE SOME LIGHT WEST TO NORTHWEST WINDS WRAPPING AROUND THE SURFACE LOW. CHANCES OF ANY SHOWERS LOOKS REMOTE HOWEVER WILL MONITOR ACTIVITY OVER ELBERT AND LINCOLN IN CASE THOSE SHOWERS MOVE FAR ENOUGH TO THE NORTHWEST. && .HYDROLOGY... ISSUED AT 858 PM MDT SUN MAY 25 2014 RIVERS AND STREAMS CONTINUE TO RISE TODAY DUE TO SNOWMELT AND RECENT RAINFALL. THE DIMINISHED RAINFALL THIS EVENING SHOULD KEEP RIVERS FROM RISING TO QUICKLY OVERNIGHT. MAIN CONCERNS ARE ON THE CACHE LA POUDRE NEAR GREELEY WITH SOME MINOR FLOODING ALREADY REPORTED. OTHER AREAS OF CONCERN ARE OVER THE RIVERS/STREAMS ACROSS JACKSON AND GRAND COUNTIES. THE MICHIGAN RIVER REMAINS RIGHT AT FLOOD STAGE THIS EVENING. && .BOU WATCHES/WARNINGS/ADVISORIES... .FLOOD WARNING... CACHE LA POUDRE NEAR GREELEY UNTIL 5/28@1500Z. .FLOOD WARNING... MICHIGAN RIVER IN JACKSON CO. UNTIL 5/26@115Z. .FLOOD ADVISORY...CACHE LA POUDRE@CANYON MOUTH IN LARIMER CO UNTIL 5/26@2215Z. .AREAL FLOOD ADVISORY...GRAND AND JACKSON COUNTIES UNTIL 5/27@1530Z. && UPDATE...ENTREKIN SHORT TERM...MEIER LONG TERM...DANKERS AVIATION...ENTREKIN HYDROLOGY...ENTREKIN
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE DENVER/BOULDER CO 618 PM MDT SUN MAY 25 2014 COZ030>051-270030- 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- 618 PM MDT SUN MAY 25 2014 ...BIG PACIFIC STORM SYSTEM IS FINALLY LOSING ITS GRIP ON NORTHEAST COLORADO... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TONIGHT LATE THIS AFTERNOON...DRIER AND MORE STABLE AIR SPREAD OVER MUCH OF THE OUTLOOK AREA...RESULTING IN A SIGNIFICANT DECREASE IN SHOWER AND THUNDERSTORM ACTIVITY. THE FEW REMAINING THUNDERSTORMS OVER THE NORTHERN FRONT RANGE AND EASTERN PORTIONS LARIMER COUNTY SHOULD DISSIPATE OR MOVE OUT OF THE AREA BY AROUND 8 PM. THESE STORMS MAY STILL PRODUCE RAINFALL AMOUNTS UP TO ONE-HALF INCH... WIND GUSTS TO AROUND 35 MPH AND POSSIBLY SOME SMALL HAIL. A FEW WEAK THUNDERSTORMS MAY ALSO FORM ALONG A WIND GUST FRONT MOVING EAST ACROSS THE NORTHEAST PLAINS EARLY THIS EVENING. LITTLE RAINFALL IS EXPECTED FROM THESE STORMS. THEREFORE...THE RISK OF FLASH FLOODING AS THE RESULT OF HEAVY RAINFALL HAS ENDED. OVERNIGHT...MOUNTAIN AREAS ROUGHLY ABOVE 10 THOUSAND FEET COULD SEE A FEW INCHES OF SNOW BY MORNING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY ON MONDAY...WRAP-AROUND MOISTURE FROM THE DEPARTING STORM SYSTEM WILL BRING ANOTHER CHANCE OF SHOWERS AND THUNDERSTORMS TO THE FRONT RANGE FOOTHILLS AND I-25 CORRIDOR. DRIER CONDITIONS CAN BE EXPECTED FROM TUESDAY THROUGH FRIDAY AS UPPER LEVEL HIGH PRESSURE AND A DRIER AIRMASS MOVE OVER COLORADO. MOISTURE WILL INCREASE AGAIN LATER FRIDAY AND SATURDAY WITH INCREASING CHANCES OF SHOWERS AND THUNDERSTORMS AT THAT TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT BUT RAINFALL REPORTS WILL BE APPRECIATED. BAKER/DANKERS
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2014Every state in 2014This day in weather historyWarnings in Colorado, May 2014
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: 524577.