Heavy rain caused some flooding in the Grand Junction metropolitan area.
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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.
Heavy rain caused some flooding in the Grand Junction metropolitan area.
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 Jun 18, 2:02 PM MST, 28 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 302 PM MDT THU JUN 18 2009 .SHORT TERM...TONIGHT THROUGH SATURDAY... ACTIVE EVENING IN STORE FOR THE FORECAST AREA AS UPPER LEVEL TROUGH OVER UTAH WORKS EAST. MOIST...UNSTABLE CONDITIONS REMAIN IN PLACE AHEAD OF THIS TROUGH...WITH WIDESPREAD SHOWERS AND THUNDERSTORMS UNDERWAY. THE 12Z SOUNDING INDICATED PRECIPITABLE WATER VALUES NEAR THREE QUARTERS OF AN INCH. THIS WILL LEAD TO EFFICIENT RAIN PRODUCING STORMS...AS THEY CONTINUE TO STRENGTHEN INTO THE EVENING HOURS. IN ADDITION TO THE HEAVY RAINFALL...EXPECT SMALL HAIL AND GUSTY WINDS TO NEAR 40 MPH WITH THE STRONGER CELLS. THIS ACTIVITY LINGERS THROUGH LATE THIS EVENING ENDING SHORTLY AFTER THE TROUGH PASSES BETWEEN MIDNIGHT AND 6 AM FRIDAY MORNING. SUBSIDENCE IN WAKE OF THE EXITING TROUGH AND SHRTWV RIDGE BUILDING IN WILL RESULT IN DRY CONDITIONS OVER THE ENTIRE CWA ON FRIDAY. NEXT SYSTEM APPROACHES FRIDAY NIGHT AND SATURDAY. INCREASING MID AND HIGH LEVEL MOISTURE SPREADS A BLANKET OF CLOUDS OVER THE AREA FRIDAY NIGHT... HELPING TO KEEP MIN TEMPS UP...ALLOWING SATURDAY TO START OFF ON THE WARM SIDE. AS A RESULT...HAVE NUDGED SATURDAY TEMPS UP A FEW DEGREES WITH THE WARMER START AND SOUTHWEST FLOW IN PLACE. RETURN OF CONVECTION ALSO IN STORE WITH CONDITIONS DESTABILIZING BY EARLY AFTERNOON. ANOTHER SHRTWV ALSO MOVES THROUGH...SO EXPECT A DAY VERY SIMILAR TO TODAY...WITH SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS...ENDING LATE SATURDAY EVENING. TEMPERATURES WILL REMAIN UNSEASONABLY COOL THROUGH SATURDAY. .LONG TERM...SATURDAY NIGHT THROUGH THURSDAY... SOUTHWEST FLOW IN GENERAL SUN-WED AS OUR FORECAST AREA SITS BETWEEN AN UPPER TROUGH OVER THE PAC NW AND A HIGH PRESSURE RIDGE OVER THE LOWER MS VALLEY AND WESTERN GULF COAST. INITIALLY...THE FLOW LOOKS FAIRLY DRY...BUT AS THE PAC NW TROUGH EJECTS INLAND AND THE RIDGE BULGES BACK TOWARD THE NW...MOISTURE MAY GET DRAWN NORTHWARD AGAIN. 18/00Z ECWMF THE MOST AGGRESSIVE WITH SHOWERS FOR NEXT WED...BUT 12Z GFS MEX GUIDANCE ALSO SHOWS AN UPWARD TREND IN POPS NEXT WED-THU. MAY DEPEND ON HOW MUCH CONVECTION OCCURS OVER THE NW MEXICO MTNS TO FEED THE MOISTURE NORTHWARD. FOR NOW...WILL KEEP SOME MENTION OF AFTN/EVE THUNDERSTORMS PRESENT MAINLY FOR THE MTNS THU UNLESS 12Z ECWMF RUN SHOWS A DRASTIC CHANGE IN ITS CONTINUITY. TEMPS EXPECTED TO WARM TO SEASONAL NORMS OR A BIT ABOVE. && .AVIATION... SHOWERS AND THUNDERSTORMS WILL CONTINUE UNTIL 09Z TONIGHT...WITH LOCALIZED MVFR CONDITIONS. GUSTY OUTFLOW WINDS...SMALL HAIL AND HEAVY RAINFALL WILL BE ASSOCIATED WITH THE STRONG STORMS. CONDITIONS IMPROVE FRONT WEST TO EAST AFTER 09Z THIS EVENING...WITH DRY CONDITIONS EXPECTED THROUGH FRIDAY EVENING. && .GJT WATCHES/WARNINGS/ADVISORIES... .CO...NONE. .UT...NONE. SHORT TERM.....JDC LONG TERM......JAD AVIATION.......JDC
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 600 AM MDT THU JUN 18 2009 COZ001>014-017>023-UTZ022>025-027>029-191200- 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 THU JUN 18 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT... SCATTERED SHOWERS AND THUNDERSTORMS WILL FOCUS MAINLY OVER THE NORTHERN PORTION OF EASTERN UTAH AND WESTERN COLORADO. ISOLATED THUNDERSTORMS WILL OCCUR OVER THE SOUTHERN MOUNTAINS. THE STRONGER STORMS WILL PRODUCE GUSTY WINDS...SMALL HAIL AND BRIEF HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY... AFTER ONLY A FEW SHOWERS ON FRIDAY SCATTERED AFTERNOON THUNDERSTORMS WILL DEVELOP EACH DAY OVER THE MOUNTAINS...BUT ONLY A FEW STORMS WILL IMPACT VALLEY AREAS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT.
The Grand Junction radar (KGJX), 29 km away, was scanning. The volume nearest the first event began at 21:29 UTC.
1 heavy rain, 1 flash flood. Local standard time, as filed.
Heavy rainfall in some areas of Grand Junction resulted in minor street flooding on North Avenue, in Clifton, and in the Redlands. A spotter in the Redlands area of Grand Junction reported 0.56 of an inch of rain within 15 minutes.
A normally dry arroyo was running 1 to 2 feet deep with rapidly flowing water. This flash flood occurred near a parking area at the head of popular hiking and biking trails, which temporarily stranded some people to the east of the arroyo.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2009Every state in 2009This day in weather historyWarnings in Colorado, June 2009
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: 180855, 194277.