Heavy rainfall produced by passing thunderstorms resulted in localized flash flooding in east central Utah during the afternoon hours of September 29th.
Every event with a place to put it. 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.
Heavy rainfall produced by passing thunderstorms resulted in localized flash flooding in east central Utah during the afternoon hours of September 29th.
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, 10:56 AM MST, 2 hours 49 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 1156 AM MDT MON SEP 29 2014 .SHORT TERM...(TODAY THROUGH TUESDAY) ISSUED AT 249 AM MDT MON SEP 29 2014 CLOSED LOW REMAINS TO OUR WEST THIS MORNING AS WEAK PIECES OF ENERGY MOVE ACROSS THE AREA CAUSING ISOLATED SHOWERS AND WEAK STORMS TO FIRE. HOWEVER...RADAR IMAGERY SUGGESTING PRECIP WINDING DOWN FOR NOW EXCEPT ALONG THE CONTINENTAL DIVIDE WHERE SOME RETURNS ARE STILL SHOWING UP. SOME LIGHT SNOW POSSIBLE FOR THE HIGHEST ELEVATIONS ALONG THE DIVIDE BUT DO NOT EXPECT ANY CONCERNS FOR MTN PASSES OR THE LIKE. MODELS AGREE THE CLOSED LOW WILL SHIFT TO THE NORTH AND EAST TODAY AS JET ENERGY CONTINUES TO ROUND THE BASE OF THE CLOSED LOW. THIS ENERGY WILL LEND ITSELF TO ANOTHER ROUND OF SHOWERS AND STORMS THIS AFTERNOON AND EVENING ESPECIALLY SINCE THE COLD POOL ALOFT WILL BE MOVING OVERHEAD INCREASING INSTABILITY. CONCERNS WILL BE SOME HAIL...GUSTY WINDS AND OCCASIONAL HEAVY DOWNPOURS FROM ABOUT 3PM THROUGH 9PM. WILL NEED TO KEEP AN EYE OUT FOR THOSE AREAS THAT HAVE ALREADY SEEN PLENTY OF RAIN OVER THE LAST FEW DAYS FOR INCREASED FLOODING CONCERNS. TONIGHT THE UPPER LOW LIFTS ONTO THE WY-NE PLAINS ENDING UPPER SUPPORT. OROGRAPHIC SHOWERS WILL CONTINUE THROUGH THE NIGHT ACROSS THE PARK/GORE/FLAT TOP/ELK MOUNTAIN RANGES IN MARGINALLY MOIST WEST FLOW. TEMPERATURES TONIGHT WILL BE WELL BELOW AVERAGE AND WE MAY SEE NEAR FREEZING IN THE COLORADO HIGH VALLEYS SUCH AS THE ROARING FORK AND GUNNISON BASIN. WITH 700MB TEMPS NEAR ZERO DEGREES LIGHT NORTHERN MOUNTAIN SNOW ACCUMULATIONS ARE POSSIBLE ABOVE 10KFT. CRAIG/HAYDEN/STEAMBOAT ARE EXPECTED TO STAY ABOVE NORMAL UNDER CLOUDS AND VIRGA/SHOWERS. RABBIT EARS...VAIL... INDEPENDENCE PASSES MAY HAVE SLICK CONDITIONS TUESDAY MORNING. FAST WEST FLOW ON TUESDAY WILL BRING A WEAK DISTURBANCE THAT WILL KEEP SCATTERED SHOWERS AND STORMS GOING OVER THE NORTHERN HIGHER TERRAIN. LIGHT SNOW IS POSSIBLE IN THE HIGHEST ELEVATIONS. SHOWER AMOUNTS ARE EXPECTED TO BE LIGHT BUT STORMS MAY PRODUCE LOCALLY STRONG WIND GUSTS. TEMPERATURES STAY BELOW AVERAGE. .LONG TERM...(TUESDAY NIGHT THROUGH SUNDAY) ISSUED AT 249 AM MDT MON SEP 29 2014 TUESDAY NIGHT AN OPEN TROUGH WORKS THROUGH THE GREAT BASIN THEN SWEEPS THROUGH THIS FORECAST AREA WEDNESDAY AFTERNOON. THIS TROUGH IS DEEPER IN THE 00Z RUNS. FRONTAL PASSAGE ON WEDNESDAY LOOKS FAIRLY ROBUST WITH THE -20C COLD CORE PASSING WEDNESDAY NIGHT. GUSTY WINDS WILL BE WIDESPREAD ALONG THE FRONT AND AFTERNOON AND EVENING THUNDERSTORMS AGAIN THREATEN STRONG OUTFLOW GUSTS. 700MB TEMPS DROP AS LOW AS -4C LATE WEDNESDAY NIGHT FOR SNOW POTENTIALLY INTO THE HIGH COLORADO VALLEYS ESPECIALLY STEAMBOAT AND VAIL. THERE IS SOME POTENTIAL FOR THE FIRST WINTER HIGHLIGHTS OF THE SEASON. ONCE THE FRONT AND TROUGH PASS THROUGH THURSDAY...A RATHER BROAD AREA OF HIGH PRESSURE SETS UP OVER THE WRN US. WHILE THIS AREA WILL MOVE AROUND SOME...THE INFLUENCE ON US REMAINS THE SAME. THAT IS...NWLY FLOW WITH NO PRECIP EXPECTED. EXTENDED GUIDANCE ALSO SHOWING A WARMING TREND INTO THE WEEKEND. FROM THURSDAY ON THEN...A QUIET TIME EXPECTED. && .AVIATION...(FOR THE 18Z TAFS THROUGH 18Z TUESDAY AFTERNOON) ISSUED AT 1154 AM MDT MON SEP 29 2014 AN UPPER DISTURBANCE ALONG THE UT/AZ BORDER WILL SWING ACROSS SW CO THIS AFTERNOON AS THE LARGER TROUGH OVER THE GREAT BASIN FINALLY LIFTS OUT TO THE NORTHEAST. SHOWERS AND POSSIBLY A THUNDERSTORM WILL IMPACT MOST TAF SITES BEFORE 03Z. MTNS WILL ALSO BE FREQUENTLY OBSCURED. GUSTY WINDS AND SMALL HAIL WILL BE POSSIBLE FROM THUNDERSTORMS. CONDITIONS WILL IMPROVE AFTER 03Z WITH PATCHY VALLEY FOG POSSIBLE IF SKIES CLEAR SUFFICIENTLY. VFR CONDITIONS GENERALLY EXPECTED 12Z-18Z TUE. && .GJT WATCHES/WARNINGS/ADVISORIES... CO...NONE. UT...NONE. && SHORT TERM...TGR/JOE LONG TERM...JOE/TGR AVIATION...JAD
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 550 AM MDT MON SEP 29 2014 COZ001>014-017>023-UTZ022>025-027>029-301200- LOWER YAMPA RIVER BASIN-CENTRAL YAMPA RIVER BASIN- ROAN AND TAVAPUTS PLATEAUS-ELKHEAD AND PARK MOUNTAINS- UPPER YAMPA RIVER BASIN-GRAND VALLEY-DEBEQUE TO SILT CORRIDOR- CENTRAL COLORADO RIVER BASIN-GRAND AND BATTLEMENT MESAS- GORE AND ELK MOUNTAINS/CENTRAL MOUNTAIN VALLEYS- CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN- WEST ELK AND SAWATCH MOUNTAINS-FLATTOPS- UPPER GUNNISON RIVER VALLEY-UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE- NORTHWEST SAN JUAN MOUNTAINS-SOUTHWEST SAN JUAN MOUNTAINS- PARADOX VALLEY/LOWER DOLORES RIVER- FOUR CORNERS/UPPER DOLORES RIVER-ANIMAS RIVER BASIN- SAN JUAN RIVER BASIN-SOUTHEAST UTAH-EASTERN UINTA MOUNTAINS- EASTERN UINTA BASIN-TAVAPUTS PLATEAU-ARCHES/GRAND FLAT- LA SAL AND ABAJO MOUNTAINS-CANYONLANDS/NATURAL BRIDGES- 550 AM MDT MON SEP 29 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT THE CLOSED LOW THAT HAS BROUGHT ALL THE RAIN OVER THE LAST FEW DAYS WILL MOVE OVER THE FORECAST AREA TODAY AND AS IT DOES...IT WILL PRODUCE SHOWERS AND THUNDERSTORMS. HAIL...HEAVY RAIN AND SOME GUSTY WINDS ARE POSSIBLE THIS AFTERNOON AND EVENING. SOME LIGHT SNOW ACCUMULATION IS ALSO POSSIBLE ABOVE 10,000 FEET. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A WEAK DISTURBANCE WILL MOVE OVER THE REGION FROM THE NORTH TUESDAY EVENING BRINGING SOME MINOR SNOW ACCUMULATIONS FOR AREAS ALONG AND NORTH OF I-70. A SECOND...STRONGER DISTURBANCE WILL MOVE THROUGH WEDNESDAY NIGHT INTO THURSDAY MORNING BRINGING THUNDERSTORMS AND SHOWERS TO THE REGION WITH HIGHER ELEVATIONS SEEING ACCUMULATING SNOW. AFTER THAT...NORTHWEST FLOW SETS UP AND DRY WEATHER PERSISTS THROUGH THE WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
117 PM MDT MON SEP 29 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1232 PM TORNADO 10 NNW DELTA 38.88N 108.15W
09/29/2014 DELTA CO PUBLIC
FUNNEL CLOUD VISIBLE FOR 3 MINUTES TOUCHED THE GROUND
FOR ABOUT ONE MINUTE. NO KNOWN DAMAGE.
&&
EVENT NUMBER GJT1401471
DCPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
130 PM MDT MON SEP 29 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1230 PM TSTM WND DMG 4 E PAGOSA SPRINGS 37.27N 106.95W
09/29/2014 ARCHULETA CO EMERGENCY MNGR
HUNDREDS OF TREES DOWN IN A FOREST AREA NEAR COUNTY
ROAD 302 IN EASTERN ARCHULETA COUNTY. TIME IS
APPROXIMATE.
&&
EVENT NUMBER GJT1401472
DCPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
224 PM MDT MON SEP 29 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0158 PM FLOOD MOAB 38.57N 109.55W
09/29/2014 GRAND UT DEPT OF HIGHWAYS
MINOR STREET FLOODING IN MOAB AND PEA SIZED HAIL. WATER
RUNNING THROUGH DOWNTOWN STREETS OVERTOPPING CURBS AND
ONTO SIDEWALKS.
&&
EVENT NUMBER GJT1401473
DCThe Grand Junction radar (KGJX), 128 km away, was scanning. The volume nearest the first event began at 20:45 UTC.
1 flash flood. Local standard time, as filed.
Flash flooding occurred along a 400 ft stretch of Highway 191 where nearly a foot of sand, rocks and debris were deposited on the roadway.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2014Every state in 2014This day in weather historyWarnings in Utah, September 2014
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: 550826.