Thunderstorms produced heavy rain in San Juan County.
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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 produced heavy rain in San Juan County.
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 30, 2:19 PM MST, 3 hours 48 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 319 PM MDT MON JUL 30 2007 .SHORT TERM...TODAY THROUGH WEDNESDAY... RELATIVELY DRIER AIR MASS COVERS THE FORECAST AREA TODAY WITH HIGH PRESSURE CENTERED OVER UTAH. EVEN SO...CONVECTION FIRING OVER THE RIDGES AND MOUNTAIN TOPS SHOW A BIT MORE STRENGTH THAN YESTERDAY. EXPECT SOME STORMS TO PRODUCE STRONG OUTFLOWS AS THESE STORMS HAVE HIGHER BASES THAN STORMS OF THE PAST FEW DAYS. AREAL COVERAGE STILL ISOLATED ACROSS THE NORTH AND SCATTERED OVER THE SOUTH PORTION. WITH WEAK SHEAR...STORMS WILL PULSE AND DRIFT TO THE SOUTH BUT WEAKEN ONCE THEY MOVE OFF THE HIGH TERRAIN. SIMILAR DAY ON TUESDAY WITH THE DRIEST AIR POSITIONED OVER NW COLORADO. THE 700 MB TEMPERATURES WILL RANGE FROM 18C TO 20C FOR THIS AREA AND WILL BE THE WARMEST DAY OF THE WEEK. NOT AS DRY OVER SW COLORADO WITH THE STRONGEST CONVECTION OVER THE SAN JUAN MOUNTAINS...THEN DRIFTING TOWARD DURANGO AND PAGOSA SPRINGS. HIGH PRESSURE FLATTENS ON WEDNESDAY AS THE TRAILING PORTION OF PACIFIC NORTHWEST COOL FRONT APPROACHES. THE BAROCLINIC ZONE MAY DRAG ACROSS THE COLORADO AND WYOMING BORDER BY WEDNESDAY AFTERNOON... INCREASING CONVECTION FOR THE ELKHEAD MOUNTAINS AND PARK RANGE. THE OVERALL TREND WILL BE FOR AN INCREASE OF STORMS AS MOISTURE CIRCULATES AROUND THE HIGH PRESSURE SYSTEM. .LONG TERM...THURSDAY THROUGH MONDAY... BY THURSDAY...THE INVERTED TROUGH...CURRENTLY OVER NORTHERN MEXICO... WILL ROTATE INTO THE GREAT BASIN. THIS WILL BRING INCREASED SUBTROPICAL MOISTURE INTO THE FORECAST AREA. FRIDAY IN WEST FLOW... SOME DRYING IS INDICATED IN THE GFS. SUCH A QUICK LOSS OF MOISTURE WITHIN THE RIDGE WOULD BE UNUSUAL...SO HAVE DONE LITTLE LOWERING OF THE POP FIELD. FORMATION OF A WEST COAST TROUGH THIS WEEKEND KEEPS THE REGION IN A MOIST SW FLOW ALOFT. TEMPERATURES ARE TRENDED DOWN WITH TIME TO NEAR CLIMATOLOGY. && .AVIATION... GUSTY OUTFLOW WINDS FROM SCATTERED THUNDERSTORMS WILL BE THE PRIMARY AVIATION WEATHER THREAT UNTIL 03Z. ISOLATED GUSTS TO 45 MPH WILL OCCUR...BUT GUSTY WINDS OF 30 MPH WILL BE FAIRLY COMMON. THUNDERSTORMS WILL DIMINISH AFTER 03Z AND ENDING BY 06Z. && .GJT WATCHES/WARNINGS/ADVISORIES... .CO...NONE. .UT...NONE. SHORT TERM...PF LONG TERM...JOE AVIATION...PF
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 545 AM MDT MON JUL 30 2007 COZ001>014-017>023-UTZ022>025-027>029-311145- 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- 545 AM MDT MON JUL 30 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING. DANGEROUS CLOUD TO GROUND LIGHTNING...LOCALLY HEAVY RAINFALL AND SMALL HAIL WILL ACCOMPANY THE STRONGEST THUNDERSTORMS. HEAVY RAINFALL MAY CAUSE A FEW ARROYOS AND SMALL STREAMS TO QUICKLY FILL OR RUN HIGH WITH FAST FLOWING WATER. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THERE IS A CHANCE FOR SHOWERS AND THUNDERSTORMS EACH DAY... WITH THUNDERSTORMS FIRST DEVELOPING OVER THE MOUNTAINS DURING THE AFTERNOON HOURS AND SPREADING INTO THE VALLEYS EACH EVENING. HEAVY RAIN...GUSTY WINDS TO 40 MPH AND SMALL HAIL WILL ACCOMPANY THE STRONGEST STORMS. THE POTENTIAL FOR HEAVY RAIN PRODUCING THUNDERSTORMS WILL BE ON THE INCREASE WEDNESDAY THROUGH FRIDAY AS MOISTURE SURGES NORTHWARD INTO EASTERN UTAH AND WESTERN COLORADO. AS A RESULT...THE RISK OF HEAVY RAINS AND LOCALIZED FLASH FLOODING WILL INCREASE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT. HOWEVER...REPORTS TO THE NATIONAL WEATHER SERVICE OF HEAVY RAIN... HAIL...AND ANY WEATHER RELATED DAMAGE WOULD BE GREATLY APPRECIATED.
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
Thunderstorms produced heavy rain in the Cedar Point area in extreme east central San Juan County. 0.57 inches of rain was measured from the event, with most of the rainfall occurring in a 30 minute period.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2007Every state in 2007This day in weather historyWarnings in Utah, 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: 55156.