Heavy rainfall and runoff produced flash flooding and debris flows along Highway 133 south of Redstone to McClure Pass.
Every event with a place to put it. 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 episode as NWS GJT wrote it up.
Heavy rainfall and runoff produced flash flooding and debris flows along Highway 133 south of Redstone to McClure Pass.
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 Grand Junction, CO wrote its last area forecast discussion before the first event at Jul 31, 9:55 AM MST, 3 hours 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 1055 AM MDT THU JUL 31 2014 .UPDATE... ISSUED AT 753 AM MDT THU JUL 31 2014 UPDATED MORNING GRIDS FOR NEXT COUPLE HOURS AS SOME PATCHY FOG IS OCCURRING ALONG THE I-70 CORRIDOR NEAR AVON AND IN THE NORTHERN VALLEYS NEAR CRAIG...HAYDEN...AND MEEKER WITH SOME LOW CEILINGS. THIS IS LIKELY DUE TO SATURATED GROUND FROM RAIN THAT OCCURRED YESTERDAY FOR AREAS ALONG AND NORTH OF I-70. ALSO UPDATED FOR CLOUD COVER IN THE NORTHERN AND CENTRAL COLORADO AREAS. EXPECTING FOG TO BURN OFF BY 15Z AND LOW CEILINGS TO LIFT AS SURFACE HEATING TAKES PLACE. FORECAST STILL ON TRACK FOR DEVELOPMENT OF AFTERNOON THUNDERSTORMS OVER THE HIGHER TERRAIN WITH BEST COVERAGE SOUTH OF I-70. SOME STORMS MAY DRIFT OFF HIGHER TERRAIN LATE AFTERNOON INTO SOME SOUTHERN AND CENTRAL COLORADO VALLEYS. && .SHORT TERM...(TODAY THROUGH FRIDAY) ISSUED AT 417 AM MDT THU JUL 31 2014 MORNING LOW TEMPERATURES FLIRTING WITH RECORDS AS GRAND JUNCTION HAS A RATHER MILD JULY 31ST RECORD LOW OF 58 SET IN 1909 AND SITTING AT 60 AS OF 4 AM THIS MORNING. STILL A FEW HOURS OF COOLING TO GO...SO A NEW RECORD COULD BE HIT. AFTER THE COOL START TO THE DAY...AFTERNOON MAX TEMPS EXPECTED TO REMAIN A GOOD 10 DEGREES BELOW NORMAL FOR MOST LOCATIONS. FOCUS OF CONVECTION SHIFTS TO OUR SOUTHERN ZONES TODAY WITH ACTIVITY FIRING OVER THE SAN JUAN MOUNTAINS BY LATE MORNING AND THEN SPREADING OVER INTO THE VALLEYS THIS AFTERNOON AND EVENING. PLENTY OF MOISTURE STILL IN PLACE WITH PRECIPITABLE WATER VALUES OVER AN INCH. SO EXPECT LOCALLY HEAVY RAINFALL AND POTENTIAL FOR MORE MUD SLIDES NEAR STEEP TERRAIN. CONVECTION WILL BE A BIT MORE ISOLATED ACROSS OUR NORTHERN ZONES WITH SUBTLE DRYING BEHIND WEAK WAVE THAT PASSED LAST EVENING. DUE TO A SOMEWHAT DRIER AIR MASS...THE AFTERNOON'S CONVECTION WILL DIMINISH BY LATE IN THE EVENING. ANY LINGERING NOCTURNAL ACTIVITY LIMITED TO THE SOUTHEAST CORNER OF THE FORECAST AREA WHERE PRECIPITABLE WATER VALUES WILL STILL BE NEARLY AN INCH. AN EMBEDDED DISTURBANCE TRAVELING FROM THE CENTRAL CA COAST WILL PASS OVER THE NORTHERN HALF OF THE FORECAST AREA ON FRIDAY. THIS WILL PROVIDE AN ADDITIONAL BOOST TO THE DAYTIME INSTABILITY. HOWEVER THE MORE UNSTABLE NORTH WILL ALSO BE THE DRIEST PORTION OF THE FORECAST AREA. PRECIPITABLE WATER THERE DROPS TO ALMOST HALF AN INCH...BUT STAYS CLOSER TO AN INCH ALONG OUR SOUTHERN EDGE. SO WHILE THE NORTH IS IN A BETTER POSITION FOR THE DISTURBANCE...THE SOUTH HAS THE BETTER MOISTURE. THEREFORE EXPECT WE WILL AGAIN SEE SHOWERS AND THUNDERSTORMS DEVELOP DURING THE AFTERNOON...MAINLY OVER THE HIGHER TERRAIN. HEAVY RAIN WILL NOT BE AS LIKELY DUE TO THE LESS AVAILABLE MOISTURE. AND DO NOT EXPECT THE RAIN PRODUCTION TO BE QUITE AS EFFICIENT AS IT HAS BEEN THE PAST COUPLE OF DAYS. ALSO THE FLOW WILL BE FROM THE WEST-NORTHWEST AT AROUND 15 KTS IN THE SOUTH...ADEQUATE TO KEEP THE STORMS MOVING ALONG. THE FLOW WILL BE A LITTLE LIGHTER UP NORTH...BUT ALSO THAT AREA WILL BE DRIER. LOW TEMPERATURES WILL BE NEAR NORMAL...WITH HIGHS STAYING A LITTLE BELOW NORMAL FOR THIS TIME OF YEAR. .LONG TERM...(FRIDAY NIGHT THROUGH WEDNESDAY) ISSUED AT 417 AM MDT THU JUL 31 2014 MOISTURE CONTINUES TO DIMINISH ON SATURDAY WITH PRECIPITABLE WATER DROPPING BELOW HALF AN INCH OVER A LARGE SECTION OF THE FORECAST AREA. THEREFORE LOOK FOR A DOWN TURN IN THE AFTERNOON SHOWER AND THUNDERSTORM ACTIVITY. WITH LESS CLOUDS AND SHOWERS...TEMPERATURES WILL CLIMB TO AROUND NORMAL. RIDGE AXIS SLIDES BACK INTO THE PLAINS BY EARLY NEXT WEEK OPENING THE GATES BACK UP FOR ANOTHER SURGE OF DEEPER MONSOONAL MOISTURE. MODELS HINTING AT A STRONGER WAVE LIFTING NORTH ACROSS THE FOUR CORNERS LATE SUNDAY...WITH A SECOND STRONGER WAVE FOLLOWING LATE MONDAY NIGHT AND TUESDAY. THIS SECOND WAVE LOOKS TO SWEEP THE DEEPER MOISTURE OUT INTO THE PLAINS BY THE MIDDLE OF NEXT WEEK WITH RIDGING REBUILDING TO OUR WEST. THIS WOULD BRING DRIER NWLY FLOW INTO THE FORECAST AREA BY WEDNESDAY. TEMPS EXPECTED TO REMAIN NEAR SEASONAL NORMS THROUGH THE LATER PERIODS OF THE EXTENDED. && .AVIATION...(FOR THE 18Z TAFS THROUGH 18Z FRIDAY AFTERNOON) ISSUED AT 1055 AM MDT THU JUL 31 2014 SCATTERED SHOWERS AND THUNDERSTORMS EXPECTED TO DEVELOP JUST BEFORE 18Z OVER THE HIGHER TERRAIN WITH SOME DRIFTING INTO THE VALLEYS AFTER 21Z. AREAS SOUTH OF I-70 ARE EXPECTED TO SEE GREATER COVERAGE THAN NORTH OF I-70. EXPECT HEAVY RAIN AND GUSTY WINDS TO 40 MPH TO BE THE PRIMARY THREATS WITH STORMS...WITH MOUNTAIN OBSCURATIONS IN ANY STORMS AND HEAVY RAIN. STORMS WILL LINGER UNTIL 06Z BEFORE COMING TO AN END. && .GJT WATCHES/WARNINGS/ADVISORIES... CO...NONE. UT...NONE. && UPDATE...MDA SHORT TERM...JDC/EH LONG TERM...EH/JDC AVIATION...MDA
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 533 AM MDT THU JUL 31 2014 COZ001>014-017>023-UTZ022>025-027>029-011200- LOWER YAMPA RIVER BASIN-CENTRAL YAMPA RIVER BASIN- ROAN AND TAVAPUTS PLATEAUS-ELKHEAD AND PARK MOUNTAINS- UPPER YAMPA RIVER BASIN-GRAND VALLEY-DEBEQUE TO SILT CORRIDOR- CENTRAL COLORADO RIVER BASIN-GRAND AND BATTLEMENT MESAS- GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS- CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN- WEST ELK AND SAWATCH MOUNTAINS-FLATTOPS- UPPER GUNNISON RIVER VALLEY-UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE- NORTHWEST SAN JUAN MOUNTAINS-SOUTHWEST SAN JUAN MOUNTAINS- PARADOX VALLEY/LOWER DOLORES RIVER- FOUR CORNERS/UPPER DOLORES RIVER-ANIMAS RIVER BASIN- SAN JUAN RIVER BASIN-SOUTHEAST UTAH-EASTERN UINTA MOUNTAINS- EASTERN UINTA BASIN-TAVAPUTS PLATEAU-ARCHES/GRAND FLAT- LA SAL AND ABAJO MOUNTAINS-CANYONLANDS/NATURAL BRIDGES- 533 AM MDT THU JUL 31 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT EXPECT SHOWERS AND THUNDERSTORMS TO REDEVELOP LATE THIS MORNING BECOMING SCATTERED TO NUMEROUS THIS AFTERNOON...ESPECIALLY OVER HIGHER TERRAIN AND THE SOUTH. THE STRONGEST CELLS WILL BE CAPABLE OF GENERATING LARGE AMOUNTS OF RAINFALL IN A SHORT PERIOD OF TIME. LOCALIZED FLOODING IS POSSIBLE. IN ADDITION TO HEAVY RAIN... STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS FROM 30 TO 40 MPH...SMALL HAIL...AND DANGEROUS LIGHTNING. SHOWERS AND THUNDERSTORMS WILL DIMINISH THIS EVENING...WITH ONLY A FEW REMAINING OVERNIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY DRIER CONDITIONS EXPECTED FRIDAY AND SATURDAY...AHEAD OF ANOTHER SURGE OF DEEP MONSOONAL MOISTURE THAT MOVES IN SUNDAY. THIS WILL BRING ANOTHER ROUND OF HEAVY RAIN PRODUCING THUNDERSTORMS TO MUCH OF EASTERN UTAH AND WESTERN COLORADO LATE SUNDAY THROUGH EARLY TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
229 PM MDT THU JUL 31 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1252 PM HAIL 1 SSW DURANGO 37.27N 107.87W
07/31/2014 E0.50 INCH LA PLATA CO COCORAHS
0.5 INCH DIAMETER HAIL COVERED THE GROUND
&&
EVENT NUMBER GJT1401344
MALEKSAThe Grand Junction radar (KGJX), 86 km away, was scanning. The volume nearest the first event began at 20:39 UTC.
1 flash flood. Local standard time, as filed.
Highway 133 was closed for about 30 minutes due to flash flooding which deposited a large amount of debris onto the road at various locations between Redstone and McClure Pass.
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, July 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: 545369.