Thunderstorms caused 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.
Thunderstorms caused 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 22, 1:37 PM MST, 3 hours 23 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 237 PM MDT TUE JUL 22 2008 .SHORT TERM...TONIGHT THROUGH THURSDAY... SLOW MOVING THUNDERSTORMS DEVELOPED OVER THE SAN JUAN MTS THIS AFTERNOON...BENEATH THE LIGHT FLOW ALOFT ASSOCIATED CENTER OF THE HIGH PRESSURE CIRCULATION. FURTHER WEST...A BIT OF SPEED SHEAR ALOFT IS HELPING MODERATE THUNDERSTORMS TO DEVELOP OVER EASTERN UT WHICH WILL MOVE AT A FASTER PACE TO THE NORTHEAST. WILL EXPECT ALL THIS ACTIVITY TO SLOWLY ROTATE TO THE EAST TONIGHT THROUGH WEDNESDAY. THIS TREND IS EVIDENT ON SATELLITE IMAGERY AND IN THE MODELS. SO HAVE DECREASED POPS WEST OF GJT AND NORTH OF VAIL...WHILE KEEPING RELATIVELY HIGH POPS ELSEWHERE. TEMP TRENDS APPEAR TO MATCH THE WARMER GFS GUIDANCE FOR THE NEXT 48 HOURS...AS NAM CONTINUES TO COOL THINGS OFF TOO MUCH. .LONG TERM...THURSDAY NIGHT THROUGH TUESDAY... GENERAL PATTERN REMAINS FAIRLY CONSISTENT WITH HIGH PRESSURE CENTERED OVER...OR NEAR THE FORECAST AREA THROUGH THE LONG TERM PERIOD. FAVORABLE FLOW WILL EBB AND FLOW FROM DAY TO DAY AS THE POSITION OF THE HIGH CENTER FLUCTUATES AND THE FLOW ALOFT SHIFTS. ALSO ANY EMBEDDED WAVES WILL ENHANCE THE CHANCE FOR THUNDERSTORMS. TIMING WILL CONTINUE TO BE SOMEWHAT UNCERTAIN SINCE A SLIGHT SHIFT IN FLOW OR A HARD TO RESOLVE WAVE COULD RESULT IN BIG DIFFERENCES IN THUNDERSTORM COVERAGE. AS USUAL IN THIS MONSOONAL PATTERN THE SOUTH WILL REMAIN FAVORED. SO WILL ONLY TWEAK THE BROAD-BRUSHED POPS IN THE PREVIOUS FORECAST THAT CALL FOR A CHANCE OF THUNDERSTORMS EACH AFTERNOON/EVENING...MAINLY MOUNTAINS AND SOUTH. ALSO EXPECT A FEW THUNDERSTORMS WILL BE POSSIBLE DURING THE OVERNIGHT PERIODS BARRING A DISTURBANCE WHICH WOULD INCREASE POPS. TEMPS WILL BE HIGHLY DEPENDENT ON CLOUD COVER AND PCPN. && .AVIATION... SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS...MOST NUMEROUS OVER THE SAN JUAN MOUNTAINS AND EASTERN UTAH...WILL CONTINUE DEVELOPING THROUGH THIS EVENING...THEN SLOWLY DISSIPATE AFTER ABOUT MIDNIGHT. SOME THUNDERSTORMS WILL PRODUCE LOCALLY HEAVY RAINFALL...MAINLY IN EASTERN UTAH AND SOUTHWEST COLORADO...RESULTING IN MOUNTAIN OBSCURATION AND MVFR CIGS AND VSBYS. && .GJT WATCHES/WARNINGS/ADVISORIES... .CO...NONE. .UT...NONE. SHORT TERM.....CJC LONG TERM......EH AVIATION.......CJC
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 600 AM MDT TUE JUL 22 2008 COZ001>014-017>023-UTZ022>025-027>029-231200- 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- 600 AM MDT TUE JUL 22 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON...ESPECIALLY OVER SOUTHWEST COLORADO WHERE STORMS WILL BE MORE NUMEROUS. LOCALLY HEAVY RAIN WILL OCCUR WITH THE STRONGEST STORMS AND ALSO PRODUCE SMALL HAIL AND VERY GUSTY WINDS. SHOWERS AND THUNDERSTORMS WILL DECREASE AFTER SUNSET. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY A CHANCE OF AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH THE WEEK...ALTHOUGH THUNDERSTORM ACTIVITY MAY DIMINISH IN NORTHEAST UTAH AND NORTHWEST COLORADO ON WEDNESDAY THROUGH SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED TODAY OR TONIGHT.
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
Heavy rainfall resulted in minor flooding in the Towaoc area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2008Every state in 2008This day in weather historyWarnings in Colorado, July 2008
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: 123039.