Heavy rain caused flash flooding along the Rio Blanco River south of Pagosa Springs.
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The episode as NWS GJT wrote it up.
Heavy rain caused flash flooding along the Rio Blanco River south of Pagosa Springs.
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 7, 1:11 PM MST, 2 hours 44 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 211 PM MDT TUE AUG 7 2007 .SHORT TERM...TONIGHT THROUGH THURSDAY... A WEAK SHORTWAVE WILL CONTINUE MOVING OVER NW CO AND NE UT INTO THIS EVENING...KICKING OFF SCATTERED THUNDERSTORMS IS CO ZONE 1 AN 2. A BIT VERTICAL SPEED SHEAR IS HELPING MULTICELL CONVECTION DEVELOP... BUT THE STORMS ARE FAIRLY WEAK AND RELATIVELY SHORT-LIVED. SURFACE HEATING IS DRIVING CONVECTION OVER THE SAN JUANS AND CENTRAL CO MTS EAST OF EGE. MODELS IN AGREEMENT FOR THE NEXT 48 HOURS. THE HIGH THAT HAS BEEN DRIVING THE MONSOON FLOW OVER WILL FLATTEN AN MOVE TO THE WESTERN GULF OF MEXICO...WITH DRY SOUTHWEST FLOW ALOFT SPREADS OVER THE FORECAST AREA ASSOCIATED WITH A BROAD TROUGH OVER THE PAC NW AND WESTERN GREAT BASIN. THE DRIER CONDITIONS WILL MEAN A DRASTIC DECREASE IN THUNDERSTORM DEVELOPMENT WED AND THU. THE STORM SHOULD REMAIN OVER THE MTS AND DUE TO DRIER LOWER LEVELS WILL PROBABLY DIE AND PRODUCE LITTLE IF ANY PRECIPITATION OVER THE VALLEYS. THE CLEARER SKIES WILL INITIALLY MEAN COOLER OVERNIGHT LOW TEMPS... WITH WARMER DAYTIME HIGHS. .LONG TERM...THURSDAY NIGHT THROUGH TUESDAY... MODELS HAVE BEEN CONSISTENT IN SHOWING A FLATTER RIDGE CENTERED OVER NORTHERN TEXAS AT THE BEGINNING OF THE PERIOD. THIS KEEPS US IN A DRIER REGIME THROUGH THE WORK WEEK. THE TREND BEGINS TO REVERSE ON FRI AS THE RIDGE AMPLIFIES AND SLOWLY SHIFTS WEST. HOWEVER TIMING HAS TRENDED TOWARDS A SLOWER SOLUTION...SO BACKED OFF POPS A LITTLE ON FRIDAY. A MORE SOUTHERLY FETCH WILL BRING AN INCREASE IN MOISTURE OVER THE AREA DURING THE WEEKEND. WHILE THIS MOISTURE WILL RESULT IN A BETTER CHANCE OF AFTERNOON SHOWERS AND THUNDERSTORMS...POPS WILL REMAIN ON THE LOW SIDE. FAVORED AREA REMAINS THE SOUTHERN MOUNTAINS. TEMPS WILL BE DEPENDENT ON CLOUD COVER AND PRECIPITATION. MORE CLOUDS/RAIN WILL RESULT IN COOLER HIGHS AND WARMER LOWS...WITH VALUES NOT TOO FAR FROM NORMAL. && .AVIATION... WIDESPREAD VFR CONDITIONS TONIGHT...THOUGH ISOLATED MVFR CONDITIONS ARE EXPECTED FROM STRONGER SHOWER AND THUNDERSTORMS OVER THE NORTHWEST COLORADO AND THE SAN JUAN MOUNTAINS THIS EVENING. MOST THUNDERSTORMS WILL BE SHORT-LIVED BUT MAY GENERATE BRIEF ERRATIC WIND GUSTS. && .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 AUG 7 2007 COZ001>014-017>023-UTZ022>025-027>029-081200- 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 AUG 7 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS ACROSS SOUTHWEST COLORADO AND EXTREME SOUTHEAST UTAH THIS AFTERNOON WILL PRODUCE SOME HEAVY SHOWERS. SOME SMALL STREAM FLOODING WILL BE POSSIBLE FROM THESE HEAVY SHOWERS. THE MONSOONAL MOISTURE WILL BEGIN TO MOVE EAST THIS EVENING AND EXPECT SHOWERS TO TAPER OFF BY MIDNIGHT. FOR THE REMAINDER OF EASTERN UTAH AND NORTHWEST COLORADO...ISOLATED MOUNTAIN THUNDERSTORMS WILL OCCUR THIS AFTERNOON. THESE STORMS WILL DISSIPATE DURING THE EARLY EVENING HOURS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY ISOLATED THUNDERSTORMS WILL BE CONFINED TO THE HIGH MOUNTAINS DURING THE LATE AFTERNOON HOURS...OTHERWISE SUNNY AND DRY CONDITIONS WILL PREVAIL. MOISTURE INCREASES OVER THE AREA LATE THURSDAY THROUGH THIS WEEKEND...PROMISING AN INCREASED CHANCE FOR SHOWERS AND THUNDERSTORMS. THESE STORMS WILL BE CAPABLE OF PRODUCING HEAVY RAINFALL...GUSTY WINDS TO 40 MPH AND SMALL HAIL. URBAN OR SMALL STREAM FLOODING WILL BE POSSIBLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT. HOWEVER... REPORTS RELAYED TO THE NATIONAL WEATHER SERVICE OF HEAVY RAIN... HAIL...AND ANY WEATHER RELATED DAMAGE WOULD BE GREATLY APPRECIATED.
The Albuquerque radar (KABX), 227 km away, was scanning. The volume nearest the first event began at 22:57 UTC.
1 flash flood. Local standard time, as filed.
Heavy rainfall caused flash flooding along the Rio Blanco River. Water up to 6 inches deep flowed across County Road 326. Big boulders were being moved by the water along with mud and other debris.
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: 56790.