Drought conditions showed some improvement across eastern Utah as a series of Pacific storm systems brought substantial rainfall to the area.
Every event with a place to put it; 7 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
Drought conditions showed some improvement across eastern Utah as a series of Pacific storm systems brought substantial rainfall to the 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 Sep 29, 5:22 PM MST, 6 hours 38 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 622 PM MDT SAT SEP 29 2007 UPDATED HEADLINE SECTION BELOW WITH THE EXPIRATION OF THE WIND ADVISORY. && .SHORT TERM...TONIGHT THROUGH MONDAY... STRONG COLD FRONT AND ASSOCIATED UPPER LEVEL TROUGH WILL BE BLASTING THROUGH THE FORECAST AREA LATE THIS AFTERNOON AND EVENING. AS OF 2 PM...THE FRONT WAS JUST MAKING ITS WAY THROUGH VERNAL AND PRICE UTAH...WITH WIND SHIFTS AND FALLING TEMPS NOTED AT EACH SITE. THE FRONT WILL CONTINUE TO WORK EASTWARD AND IS EXPECTED TO PASS THROUGH GRAND JUNCTION BETWEEN 4 AND 6 PM...CLEARING THE EASTERN SECTIONS OF THE CWA BY MIDNIGHT. OUT AHEAD OF THE FRONT...A NICE DRY SLOT HAS DEVELOPED...WHICH IS ALLOWING GOOD SFC HEATING AND DEEP MIXING TO OCCUR. THIS IS DRIVING DOWN STRONGER WINDS TO THE SURFACE WITH WIDESPREAD GUSTS IN EXCESS OF 50 MPH BEING REPORTED. CURRENT WIND ADVISORY THROUGH 6 PM STILL ON TRACK AND NO CHANGES THERE. ACROSS THE FAR SOUTHERN ZONES AND INTO OUR EAST CENTRAL ZONES...A RATHER MOIST AND UNSTABLE AIRMASS CONTINUES TO GENERATE SHOWERS AND THUNDERSTORMS. MOST OF THE ACTIVITY HAS BEEN ON THE LIGHT SIDE WITH QPF VALUES GENERALLY LESS THAN A TENTH OF AN INCH. THIS ACTIVITY WILL BE HEADING EAST AS THE MAIN TROUGH SLIDES INTO THE FORECAST AREA. NARROW BAND OF CONVECTION IS EXPECTED ALONG AND JUST BEHIND THE FRONT...WITH SHARPLY FALLING TEMPERATURES. DAYTIME TEMPS IN KSLC HAVE CONTINUED TO DROP TODAY WITH READINGS DOWN INTO THE MID 30S. EXPECT ENOUGH CLOUD COVER AND MIXING TO KEEP OUR LOWER VALLEYS ABOVE THE FREEZING MARK TONIGHT...BUT THIS WILL NEED TO BE WATCHED AS WE HEAD INTO THE OVERNIGHT HOURS. SLIGHTLY BETTER MOISTURE WILL POOL OVER OUR NORTHERN ZONES TONIGHT...WITH WESTERLY COMPONENT TO THE FLOW DEVELOPING. THIS WILL PROVIDE A PERIOD OF FAVORABLE OROGRAPHICS INTO THE NORTHERN MOUNTAINS...AND WITH TEMPS PLUMMETING LATER THIS EVENING...EXPECT SNOW LEVELS TO DROP TO 8K OR LESS BY MIDNIGHT. NOT EXPECTING ANY HEFTY AMOUNTS OF SNOW AS SUBSIDENCE AND DRYING SLIDE IN AFTER MIDNIGHT. SUNDAY...A SUNNY AND COOL DAY IN STORE ACROSS THE REGION...WITH BRIEF SHRTWV RIDGE BUILDING IN. SUNDAY NIGHT...SHRTWV RIDGE AXIS SHIFTS EAST...WITH SWLY FLOW RESUMING AS ANOTHER FAST MOVING TROUGH ENTERS THE PACNW. AT THE SAME TIME...HIGH LEVEL MOISTURE WILL START TO RETURN TO THE AREA WITH WARMING CONDITIONS ALOFT. THIS WL HELP TO KEEP MIN TEMPS IN CHECK. MONDAY...DEEPER SUBTROPICAL MOISTURE BEING LIFTED NORTHWARD INTO THE FOUR CORNERS REGION WILL KICK OFF ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS. SOME OF THIS MOISTURE IS ASSOCIATED WITH TROPICAL STORM JULIETTE LOCATED IN THE EASTERN PACIFIC. TIMING OF THESE SECOND TROUGH WILL PLAY A BIG ROLE AS TO HOW MUCH OF THIS DEEPER MOISTURE GETS LIFTED OVER OUR AREA. ATTM...THE MODELS ARE IN GOOD AGREEMENT WITH SHUNTING THIS MOISTURE SOUTH AND EAST LATE MONDAY... WITH PACIFIC MOISTURE ROLLING IN WITH THE MAIN TROUGH. IN EITHER CASE...WE HAVE BUMPED POPS UP SIGNIFICANTLY FOR MONDAY AFTERNOON AND INTO THE OVERNIGHT HOURS. TEMPS WILL REMAIN ON THE COOL SIDE OF NORMAL FOR THE NEXT FEW DAYS. .LONG TERM...MONDAY NIGHT THROUGH SATURDAY... MODELS IN GOOD AGREEMENT FOR FIRST SYSTEM MOVING THROUGH MONDAY NIGHT THROUGH TUESDAY AM. EAST TEXAS HIGH RAPS MOISTURE INTO THE FOUR CORNERS AREA...BUT THE PACIFIC TROUGH KICKS THIS EAST BEFORE ANY SUBSTANTIAL MOISTURE CAN SET IN. BOTTOM LINE THIS SYSTEM MUCH LIKE THE CURRENT WEEKEND PATTERN...MAYBE A TOUCH SLOWER WITH MORE MOISTURE. INCREASED POPS AMD LOWERED TUESDAY AM TEMPS WITH THIS SYSTEM. PATTERN QUICKLY GOES ZONAL THEN BACKS TO THE SOUTHWEST AS THE NEXT SYSTEM MOVES IN FROM THE PACIFIC NW. THE EC IS NOW PUSHING THIS TROUGH THROUGH NEXT WEEKEND BUT CONTINUES TO BE SLOWER THAN THE GFS MODEL. STARTED INCREASING SKY...POPS TOWARD THE WEEKEND FOR THIS SYSTEM. REST OF FORECAST HAS A GOOD HANDLE ON THE SENSIBLE WEATHER. && .AVIATION... BIG CONCERN THIS PERIOD IS STRONG WINDS CAUSING MODERATE TURBULENCE. LOCAL METARS GUSTING TO AROUND 45 KTS. FLOW STRONG THROUGH LOWER DEPTHS WITH ISOLD TSRA SO LLWS NOT IN THE TAFS. A FEW PIREPS REPORTING RIME SO COOLING WITH TODAYS SYSTEM WILL LOWER THE RIME ICING POTENTIAL THIS EVENING AND TONIGHT. LOCAL MVFR CONDITIONS EARLY THIS AFTERNOON BECOMING WIDESPREAD IN THE MOUNTAINS THIS EVENING AS SHOWERS AND THUNDERSTORMS INCREASE FROM ISOLATED TO SCATTERED. SNOW IN THE MOUNTAINS LATER THIS AFTERNOON THROUGH TONIGHT WILL PRODUCE LOCAL IFR CONDITIONS. && .GJT WATCHES/WARNINGS/ADVISORIES... .CO...NONE. .UT...NONE. SHORT TERM...JDC LONG TERM....DJC AVIATION.....DJC
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 617 PM MDT SAT SEP 29 2007 COZ001>014-017>023-UTZ022>025-027>029-301200- 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- 617 PM MDT SAT SEP 29 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TONIGHT SOUTHWEST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH WILL GRADUALLY DIMINISH THIS EVENING. SHOWERS WITH ISOLATED THUNDERSTORMS AND POSSIBLE SMALL HAIL WILL OCCUR THIS EVENING...EXCEPT FOR EXTREME SOUTHEAST UTAH AND SOUTHWEST COLORADO WHERE DRY WEATHER CAN BE EXPECTED. TEMPERATURES WILL QUICKLY DROP TWENTY DEGREES BEHIND A FAST MOVING COLD FRONT THIS EVENING. SNOW ACCUMULATIONS OF 2 TO 4 INCHES ARE POSSIBLE ABOVE 9000 FEET ACROSS SOME OF THE MOUNTAINS OF NORTHEAST UTAH AND NORTHWEST AND CENTRAL COLORADO BY LATE TONIGHT. ROADS OVER HIGH MOUNTAIN PASSES MAY BECOME LOCALLY ICY AND SNOWPACKED. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ISOLATED SNOW SHOWERS WILL DISSIPATE OVER THE NORTHWEST COLORADO MOUNTAINS SUNDAY MORNING. THE NEXT CHANCE OF VALLEY RAIN SHOWERS AND THUNDERSTORMS...AND MOUNTAIN THUNDERSTORMS WITH RAIN AND SNOW SHOWERS...COMES ON MONDAY AND TUESDAY WHEN ANOTHER PACIFIC STORM MOVES THROUGH THE AREA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT.
The national radar mosaic for the moment the first event began.
7 drought. Local standard time, as filed.
Conditions improved during the month from severe drought to moderate drought by the end of the month in the eastern Uinta Mountains. The exception was a small portion of Daggett County near the Wyoming border which remained in severe drought conditions.
Conditions improved during the month from severe drought to moderate drought by the end of the month in the eastern Uinta Basin.|
Drought conditions on the Tavaputs Plateau improved from severe drought to moderate drought or abnormally dry conditions by the end of the month.
The month began with moderate to severe drought conditions. By the end of the month, the moderate drought areas improved to abnormally dry conditions, and the severe drought areas improved to moderate drought conditions.
Severe drought conditions prevailed early in the month, except for a sliver of moderate drought conditions along the Colorado border. By the end of the month, the moderate drought area had improved to abnormally dry conditions, and the severe drought area improved to moderate drought conditions.
Moderate drought to abnormally dry conditions plagued the La Sal and Abajo Mountains through the month. However, some improvement occurred as severe drought diminished.
The month began with severe drought conditions, except for a sliver of moderate drought conditions along the Colorado border. By the end of the month, the moderate drought area had improved to abnormally dry conditions, and the severe drought area had improved to moderate drought condtions.
The month began with widespread severe drought conditions in the Canyonlands and Natural Bridges area of southeast Utah. By the end of the month, the situation had improved to moderate drought conditions with only a few lingering patches of severe drought.
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, September 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: 59872, 59873, 59875, 59876, 59877, 59878, 59879.