Heavy rain producing thunderstorms caused minor flooding along the Montrose County and San Miguel County border north of Norwood.
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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 producing thunderstorms caused minor flooding along the Montrose County and San Miguel County border north of Norwood.
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 Aug 27, 1:22 PM MST, 2 hours 23 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 222 PM MDT MON AUG 27 2007 .SHORT TERM (TONIGHT THROUGH WEDNESDAY)... AN UPPER LEVEL HIGH IS CENTERED OVER TEXAS WHILE AN UPPER TROUGH IS MOVING ACROSS THE NORTHERN ROCKIES. A MOIST SOUTHWEST FLOW BETWEEN THESE FEATURES IS PRODUCING WIDESPREAD OVERCAST AND SHOWERS AND THUNDERSTORMS ACROSS EASTERN UTAH AND WESTERN COLORADO. A SHORTWAVE TROUGH MOVED THROUGH THE AREA LAST NIGHT AND EARLIER TODAY WITH ANOTHER STRONGER WAVE CURRENTLY OVER SOUTHERN UTAH AND NORTHERN ARIZONA. THIS WAVE APPEARS TO HAVE PHASED WITH SOME ENERGY ASSOCIATED WITH THE TROUGH TO THE NORTH RESULTING IN A PERSISTENT LINE OF THUNDERSTORMS CURRENTLY MOVING ACROSS SOUTHEAST UTAH. ADDITIONAL STORMS DEVELOPING AHEAD OF THIS MAIN LINE SO WIDESPREAD SHOWERS AND THUNDERSTORMS ON TAP FOR THE REST OF THIS AFTERNOON AND EVENING AS THE SHORTWAVE MOVES OVER THE FORECAST AREA. STORMS ARE MOVING AT A PRETTY GOOD SPEED BUT ADDITIONAL HEAVY RAIN THIS AFTERNOON AND EVENING ON TOP OF RAINFALL THE PAST 12 TO 18 HOURS WILL LIKELY RESULT IN SOME LOCALIZED FLOODING SO A FLASH FLOOD WATCH HAS BEEN ISSUED FOR MUCH OF THE AREA. MAIN AREAS OF CONCERN FOR HEAVY RAIN ARE GENERALLY ALONG THE ROAN AND TAVAPUTS PLATEAU SOUTH TO THE FOUR CORNERS AREA. IN ADDITION TO FLOODING CONCERNS...A FEW STRONG STORMS EXPECTED TO DEVELOP AND PRODUCE STRONG WIND GUSTS AND SOME SMALL HAIL. SHOWERS AND STORMS EXPECTED TO BE ON THE DECREASE OVERNIGHT ESPECIALLY ACROSS NORTHEAST UTAH AND NORTHWEST COLORADO WHICH WILL BE ON THE NORTH SIDE OF A SHEARED VORTICITY AXIS EXPERIENCING SOME SUBSIDENCE. THE SHORTWAVE TROUGH WILL MOVE EAST OF THE AREA ON TUESDAY WHILE THE HIGH CENTER OVER TEXAS SHIFTS TO THE WEST AND BECOMES POSITIONED OVER ARIZONA BY WEDNESDAY. ALTHOUGH THE FETCH OF DEEP SUBTROPICAL MOISTURE GETS CUT OFF AND DRIER AIR GRADUALLY WORKS INTO THE AREA...PLENTY OF RESIDUAL MOISTURE WILL BE PRESENT FOR DIURNAL SHOWERS AND THUNDERSTORMS TO DEVELOP TUESDAY AND WEDNESDAY. HIGHEST POPS OVER THE MOUNTAINS WHERE LOCAL CONVERGENCE WILL BE THE MAIN FORCING MECHANISM. LITTLE CHANGE TO THE TEMPERATURE FORECAST. WIDESPREAD PRECIPITATION WILL KEEP OVERNIGHT MIN TEMPERATURES COOL BUT MILD TONIGHT. DAYTIME HIGHS WILL BE SEVERAL DEGREES WARMER TUESDAY WITH LESS CLOUDS AND PRECIPITATION. WARMING TREND TO CONTINUE WEDNESDAY AS THE HIGH SHIFTS WEST OVER THE AREA. .LONG TERM...WEDNESDAY NIGHT THROUGH MONDAY... UPPER LEVEL RIDGE DEVELOPS SOUTHWEST OF THE FOUR CORNERS CUTTING OFF THE SOUTHERN FETCH OF MID TO UPPER LEVEL MOISTURE. MOISTURE ALREADY OVER THE REGION WILL LINGER AND HELP WITH DIURNAL SHOWERS AND THUNDERSTORMS. MODELS INDICATE SOME LOW LEVEL MOISTURE FROM THE EASTERN PLAINS PUSHING INTO THE EAST CENTRAL AND SOUTHEAST PORTION OF THE CWA AND SHOULD FOCUS CONVECTION OVER THIS AREA. THE RIDGE SLIDES WEST DURING THE END OF THE WEEK LEAVING WESTERN CO AND PORTIONS OF EAST UT UNDER WEAK NORTHWEST FLOW. A FEW DISTURBANCES MOVE THROUGH THE FLOW BUT HAVE NOT BEEN CONSISTENT RUN TO RUN WITHOUT A SUB TROPICAL MOISTURE TAP...SO WILL KEEP THE DIURNAL PRECIP TREND AS IS FOR NOW. NEW MODELS KEEP THE RIDGE AXIS OVER WESTERN AZ AND SOUTHERN NV THROUGH WEEKEND WITH THE RIDGE TILTING IN A POS DIRECTION AND FLOW BECOMING MORE NORTHERLY OVER THE WESTERN CO. && .AVIATION... WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS WILL CONTINUE ACROSS THE REGION THROUGH THIS EVENING AS DISTURBANCES MOVE ACROSS THE AREA IN A DEEP MOIST SOUTHWEST FLOW. ISOLATED TO SCATTERED MVFR CONDITIONS CAN BE EXPECTED IN SHOWERS AND THUNDERSTORMS WITH LOCAL IFR CONDITIONS IN HEAVY RAIN. THE VERY MOIST LOW LEVELS WILL YIELD SOME LOCAL MVFR CIGS IN SOME OF THE VALLEYS LATE TODAY AND TONIGHT. LOCAL MVFR CONDITIONS IN VALLEY FOG LIKELY TONIGHT. && .GJT WATCHES/WARNINGS/ADVISORIES... .CO...FLASH FLOOD WATCH UNTIL 8 PM MDT FOR COZ003-006-007-017>022. .UT...FLASH FLOOD WATCH UNTIL 8 PM MDT FOR UTZ022-025-027>029. SHORT TERM...TAL LONG TERM...AS AVIATION...TAL
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 858 AM MDT MON AUG 27 2007 COZ003-006-007-011-017>022-UTZ022-025-027>029-281145- ANIMAS RIVER BASIN-ARCHES/GRAND FLAT-CANYONLANDS/NATURAL BRIDGES- CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN- DEBEQUE TO SILT CORRIDOR-FOUR CORNERS/UPPER DOLORES RIVER- GRAND VALLEY-LA SAL AND ABAJO MOUNTAINS-NORTHWEST SAN JUAN MOUNTAINS- PARADOX VALLEY/LOWER DOLORES RIVER-ROAN AND TAVAPUTS PLATEAUS- SOUTHEAST UTAH-SOUTHWEST SAN JUAN MOUNTAINS-TAVAPUTS PLATEAU- UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE- 858 AM MDT MON AUG 27 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT. A FLASH FLOOD WATCH IS IN EFFECT FOR PORTIONS OF EASTERN UTAH AND WESTERN COLORADO THROUGH 800 PM TONIGHT. NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS WILL OCCUR ACROSS THE REGION THIS MORNING. AFTER A BRIEF LULL IN PRECIPITATION BY LATE MORNING...ADDITIONAL STORMS WILL BRING BACK HEAVY RAINFALL TO THE WATCH AREA THIS AFTERNOON. THIS COULD LEAD TO LOCALIZED FLOODING AND MUD AND DEBRIS SLIDES. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THE CHANCE OF SHOWERS AND THUNDERSTORMS WILL DECREASE SLIGHTLY FOR THE TUESDAY THROUGH SUNDAY TIME FRAME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT. HOWEVER... SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT RAINFALL AMOUNTS. NL/ELH/BA
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
354 PM MDT MON AUG 27 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0340 PM FUNNEL CLOUD 3 W CRAIG 40.52N 107.61W
08/27/2007 MOFFAT CO PUBLIC
&&
LUDThe national radar mosaic for the moment the first event began.
2 heavy rain. Local standard time, as filed.
Heavy rain producing thunderstorms caused minor flooding of county roads along the Montrose County and San Miguel County border.
Heavy rain producing thunderstorms caused minor flooding along the San Miguel County and Montrose County border. Rainfall reports in the area included 0.65 inches within 25 minutes and 0.63 inches within 15 minutes. Estimated wind gusts of 50 to 55 mph accompanied the rainfall, with minor wind damage reported at a farm.
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, August 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: 56812, 56813.