Runoff from heavy rain producing thunderstorms caused ponding of water and minor flooding.
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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 GJT wrote it up.
Runoff from heavy rain producing thunderstorms caused ponding of water and minor flooding.
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 19, 3:00 AM MST, 10 hours earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 400 AM MDT THU JUL 19 2007 .SHORT TERM...TODAY THROUGH FRIDAY NIGHT... THE STRONG RIDGE OVER THE AREA IS PROJECTED TO CONTINUE ITS VERY SLOW SLIDE TO THE EAST. MOISTURE WILL CONTINUE ROTATING AROUND THE HIGH CENTER WITH WEAK DISTURBANCE ENHANCING CONVECTION. SOME OF THESE HAVE BEEN HARD FOR MODELS TO PICK UP AND ARE NOT DISCERNABLE UNTIL THEY START FOCUSING CONVECTIVE DEVELOPMENT. PRECIPITAL WATER DROPPED OFF A LITTLE AT 00Z...BUT STILL AT 3/4 OF AN INCH. AREAS SOUTH OF I-70 SHOULD GET THE BULK OF THE SHOWERS AND THUNDERSTORMS TODAY AS THE MAIN MOISTURE PLUME IS OVER THAT AREA. BY FRIDAY A DRIER SW FLOW ALOFT WILL MOVE IN AND DECREASE THE CHANCE OF RAIN AND CLOUD COVER OVER MOST OF EASTERN UTAH AND NW CO. THE MAIN MOISTURE BAND WILL SHIFT FURTHER SOUTHER...ALONG THE SOUTHER CO BORDER. WHERE TEMPS WILL DECREASE A DEGREE OR SO TODAY DUE TO CLOUDS AND MOISTURE CONTENT... DRIER CONDITIONS FRIDAY WILL ALLOW MAX TEMPS TO REBOUND...BACK UP 3 OR SO DEGREES. .LONG TERM...SATURDAY THROUGH THURSDAY... LOW LEVEL MOISTURE WILL REMAIN ENTRENCHED OVER THE REGION AS THE RIDGE PERSISTS. ALTHOUGH MODELS CONTINUE TO INDICATE A SHIFT IN ORIENTATION OF THE RIDGE AXIS IN THE POSITIVE AND SLIGHTLY EAST WHICH WOULD ALLOW ADDITIONAL MOISTURE TO PUSH IN FROM THE SOUTH. CONVECTION IN NM SHOULD HELP TO PUSH THIS MOISTURE NORTHWARD. A NUMBER OF SHORT WAVES TRAVERSE AROUND THE RIDGE AND WILL HELP WITH SHOWER AND THUNDERSTORMS DEVELOPMENT. PLACEMENT AND TIMING OF THESE SMALL FEATURES IS STILL UNCERTAIN SO SPECIFIC LOCATIONS ARE DIFFICULT TO PLACE. EXPECT THE AFTERNOON AND EVENING THUNDERSTORMS FORMING ESPECIALLY OVER THE HIGHER TERRAIN AND THEN DRIFTING OVER VALLEY LOCATIONS. THE MOISTURE WILL ALSO HELP MODERATE TEMPERATURES SLIGHTLY KEEPING MOST LOCATIONS BELOW THE CENTURY MARK. CURRENT FORECAST HOLDING STEADY. && .AVIATION... ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS EXPECTED THROUGH THE REST OF THIS WEEK...MAINLY AFTERNOON AND EVENING HOURS...AND MAINLY OVER THE MOUNTAINS. ALTHOUGH VFR CONDITIONS EXPECTED TO PREVAIL... SOME STORMS WILL LIKELY PRODUCE MOUNTAIN OBSCURATION AND MVFR CONDITIONS. && .GJT WATCHES/WARNINGS/ADVISORIES... .CO...NONE. .UT...NONE. SHORT TERM...CJC LONG TERM...AS AVIATION...CJC
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 510 AM MDT THU JUL 19 2007 COZ001>014-017>023-UTZ022>025-027>029-201200- ANIMAS RIVER BASIN-ARCHES/GRAND FLAT-CANYONLANDS/NATURAL BRIDGES- CENTRAL COLORADO RIVER BASIN- CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN- CENTRAL YAMPA RIVER BASIN-DEBEQUE TO SILT CORRIDOR- EASTERN UINTA BASIN-EASTERN UINTA MOUNTAINS- ELKHEAD AND PARK MOUNTAINS-FLAT TOPS- FOUR CORNERS/UPPER DOLORES RIVER- GORE AND ELK MOUNTAINS/CENTRAL MOUNTAINS-GRAND AND BATTLEMENT MESAS- GRAND VALLEY-LA SAL AND ABAJO MOUNTAINS-LOWER YAMPA RIVER BASIN- NORTHWEST SAN JUAN MOUNTAINS-PARADOX VALLEY/LOWER DOLORES RIVER- ROAN AND TAVAPUTS PLATEAUS-SAN JUAN RIVER BASIN-SOUTHEAST UTAH- SOUTHWEST SAN JUAN MOUNTAINS-TAVAPUTS PLATEAU- UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE-UPPER GUNNISON RIVER VALLEY- UPPER YAMPA RIVER BASIN-WEST ELK AND SAWATCH MOUNTAINS- 510 AM MDT THU JUL 19 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT ISOLATED SHOWERS AND THUNDERSTORMS WILL INCREASE TO SCATTERED THUNDERSTORMS MAINLY OVER THE HIGHER TERRAIN BY THIS AFTERNOON. IN ADDITION TO CLOUD TO GROUND LIGHTNING...MANY OF THESE STORMS WILL PRODUCE GUSTY WINDS UP TO 35 MPH...AND SOME STORMS WILL PRODUCE LOCALLY HEAVY RAIN AND SMALL HAIL. ISOLATED SHOWERS AND THUNDERSTORMS WILL LIKELY PERSIST AFTER MIDNIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED EVERY DAY... MAINLY DURING THE AFTERNOON AND EVENING HOURS. LIGHTNING AND GUSTY WINDS WILL BE COMMON WITH THE STORMS. A FEW OF THESE STORMS WILL GENERATE BRIEF HEAVY RAIN SHOWERS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT...ALTHOUGH REPORTS TO THE NATIONAL WEATHER SERVICE OF HEAVY RAIN...HAIL...AND ANY WEATHER RELATED DAMAGE WOULD BE GREATLY APPRECIATED. CUOCO
The national radar mosaic for the moment the first event began.
3 heavy rain. Local standard time, as filed.
Forty minutes of moderate rainfall resulted in some large pools of water in low lying areas within the Hahns Peak community.
Heavy rain caused some field flooding along Alkali Creek and also washed some gravel onto Highway 131.
Heavy rain washed rocks and debris out of bar ditches and onto Highway 133 in multiple locations along a three mile stretch of the road near McClure Pass.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2007Every state in 2007This day in weather historyWarnings in Colorado, July 2007
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: 55464, 55466, 55465.