A moist upper low over eastern Utah and western Colorado produced some thunderstorms with rotation in the Grand Junction area.
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.
A moist upper low over eastern Utah and western Colorado produced some thunderstorms with rotation in the Grand Junction 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 Aug 27, 3:21 PM MST, 19 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 421 PM MDT WED AUG 27 2014 .SHORT TERM...(TONIGHT THROUGH THURSDAY NIGHT) ISSUED AT 321 PM MDT WED AUG 27 2014 UPPER LOW HAS DRIFTED SLOWLY NORTHEAST IN EASTERN UTAH TODAY WITH CENTER OF LOW NEAR UINTAH COUNTY-RIO BLANCO COUNTY BORDER AS OF MID AFTERNOON TODAY. BANDS OF SHOWERS AND THUNDERSTORMS HAVE CONTINUED TO ROTATE AROUND THE UPPER LOW ACROSS MOST OF OUR CWA TODAY...AND EXPECT THIS SITUATION TO PERSIST THROUGH THIS EVENING FOR MOST OF OUR CWA. LOCALLY HEAVY RAINFALL HAS OCCURRED IN SOME AREAS WITH MINOR FLOODING. MOST STORM MOTIONS HAVE BEEN MOVING AT AROUND 20 MPH. THE EXCEPTION IS IN THE UINTAH BASIN WHERE UPPER LOW CENTER IS SO CLOSE TO THAT AREA THAT THE WINDS ALOFT ARE RELATIVELY LIGHT...AND STORM MOVEMENT HAS BEEN LESS THAN 10 MPH. PERSISTENT RAINFALL IN THE VERNAL AND MAESER AREA RESULTED IN AREAS OF MINOR FLOODING TODAY. 0.68 AT KVEL AS OF 3 PM TODAY ...WITH THE HEAVIER RAIN TO THE NORTH AND NORTHWEST OF KVEL. GOOD LIKELIHOOD THAT SNOWFALL HAS BEEN FALLING AT TIMES AT HIGH ELEVATIONS...MAINLY ABOVE THE 12000 FOOT LEVEL. AND THIS SITUATION LIKELY TO CONTINUE INTO TONIGHT...THOUGH EXPECT ONLY MINIMAL ACCUMULATIONS OF AN INCH OR TWO OF HIGH DENSITY SNOW OR SLUSH. SPS ISSUED TODAY INCLUDED THIS MENTION OF HIGH ELEVATION SNOWFALL. AS UPPER LOW CONTINUES TO DRIFT NORTHEAST TONIGHT...MOISTURE WILL GRADUALLY BE PULLED AWAY WITH IT...WITH DECREASING SHOWERS AND THUNDERSTORMS FROM THE SOUTH AND WEST...ESPECIALLY AFTER MIDNIGHT. BY SUNRISE ON THURSDAY EXPECT MOST OF THE REMAINING SHOWERS TO BE IN NW COLORADO MOUNTAINS. ALTHOUGH TEMPERATURES ON THURSDAY SHOULD BE BELOW NORMAL IN MOST LOCATIONS WITHIN OUR CWA UNDER NW FLOW ALOFT...RESIDUAL MOISTURE AND ENOUGH DAYTIME HEATING SHOULD PRODUCE A FEW SHOWERS AND THUNDERSTORMS MAINLY OVER WESTERN CO MOUNTAINS NEAR THE CONTINENTAL DIVIDE. .LONG TERM...(FRIDAY THROUGH WEDNESDAY) ISSUED AT 321 PM MDT WED AUG 27 2014 A MUCH DRIER PERIOD IS EXPECTED FRIDAY THROUGH EARLY NEXT WEEK THOUGH NOT TOTALLY DEVOID OF THE CHANCE OF SHOWERS. GENERALLY WESTERLY FLOW WILL KEEP FURTHER MONSOON MOISTURE AT BAY AS DISTURBANCES MOVE BY TO THE NORTH. PRECIPITABLE WATER VALUES ARE FORECAST TO BE ONLY AROUND .50 TO 65 INCH THIS WEEKEND. ONE FAST- MOVING SHORTWAVE TROUGH IS FORECAST TO ZIP ACROSS MT/WY ON FRIDAY...AND ITS SOUTHERN EXTENSION MAY TRIGGER A FEW SHOWERS/STORMS NEAR THE DIVIDE. MODELS THEN SHOW A LARGER PACIFIC TROUGH LUMBERING EASTWARD ACROSS SRN CANADA AND THE NORTHERN STATES THIS WEEKEND... REACHING THE GREAT LAKES BY LATE MONDAY. THIS WILL BRING A LITTLE BETTER CHANCE OF SHOWERS AND THUNDERSTORMS TO MAINLY THE NORTH AND CENTRAL AREAS SATURDAY AND SUNDAY. ALSO ANTICIPATE AN UPTICK IN AFTERNOON WIND ACROSS THE NORTH AND MOUNTAINS THIS WEEKEND AS THIS TROUGH PASSES. MONDAY THROUGH WEDNESDAY LOOK DRY AT THE MOMENT WITH HIGH PRESSURE STRETCHING PRACTICALLY COAST TO COAST ACROSS THE SOUTHERN STATES. TEMPERATURES WILL AVERAGE NEAR TO SLIGHTLY COOLER THAN NORMAL. NEXT PACIFIC TROUGH SHOWN WORKING INTO THE PACIFIC NORTHWEST ON WED WITH FLOW ACROSS OUR AREA BECOMING MORE SOUTHWESTERLY. && .AVIATION...(FOR THE 00Z TAFS THROUGH 00Z THURSDAY EVENING) ISSUED AT 420 PM MDT WED AUG 27 2014 A SLOW MOVING LOW PRESSURE SYSTEM OVER NORTHWEST COLORADO WILL CONTINUE TO GENERATE NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS THE FORECAST AREA THIS EVENING. THERE IS A VERY GOOD CHANCE THAT ALL TAF SITES WILL EXPERIENCE THUNDERSTORMS WITH HEAVY RAIN. STORMS WILL BE CAPABLE OF PRODUCING BRIEF PERIODS OF MVFR/IFR VSBY AND MVFR CIGS. EXPECT PERIODS OF MOUNTAIN OBSCURATION. AS THE LOW DRIFTS EASTWARD LATER TONIGHT AND INTO THURSDAY STORM ACTIVITY WILL SHIFT TO THE COLORADO MOUNTAINS AND ADJACENT VALLEYS. && .GJT WATCHES/WARNINGS/ADVISORIES... CO...NONE. UT...NONE. && SHORT TERM...JRP LONG TERM...JAD AVIATION...NL
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 511 AM MDT WED AUG 27 2014 COZ001>014-017>023-UTZ022>025-027>029-281200- 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- 511 AM MDT WED AUG 27 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS THE AREA THROUGH TONIGHT. LOCALLY HEAVY RAIN AND GUSTY OUTFLOW WINDS TO 40 MPH WILL ACCOMPANY THE STRONGEST STORMS. SMALL HAIL WILL ALSO BE POSSIBLE THIS AFTERNOON. OVER THE HIGHER MOUNTAINS...WET SNOW MAY FALL WITH SOME LIGHT ACCUMULATIONS EXPECTED ABOVE 12000 FEET. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY SCATTERED SHOWERS AND THUNDERSTORMS CONTINUE ON THURSDAY...BEFORE DRIER AND WARMER CONDITIONS MOVE BACK INTO THE REGION OVER THE WEEKEND. THERE IS A SLIGHT CHANCE FOR MORE SHOWERS AND THUNDERSTORMS TO MOVE ACROSS NORTHEAST UTAH AND NORTHWEST COLORADO LATE SUNDAY AND MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED TODAY OR TONIGHT...HOWEVER SPOTTERS ARE ENCOURAGED TO RELAY RAINFALL AMOUNTS OR ANY OBSERVED FLOODING TO THE GRAND JUNCTION FORECAST OFFICE.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
118 PM MDT WED AUG 27 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0923 AM HEAVY RAIN 4 NNE CEDAREDGE 38.95N 107.90W
08/27/2014 M0.61 INCH DELTA CO TRAINED SPOTTER
24 HOUR RAINFALL
&&
EVENT NUMBER GJT1401408
MALEKSASPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND JUNCTION CO 225 PM MDT WED AUG 27 2014 COZ009-011-272100- GRAND AND BATTLEMENT MESAS CO- CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN CO- 225 PM MDT WED AUG 27 2014 ...SPECIAL WEATHER STATEMENT... AT 224 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM JUST WEST OF ECKERT AND ORCHARD CITY...MOVING EAST AT 20 MPH. HALF INCH HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... ORCHARD CITY...CEDAREDGE AND ECKERT. LAT...LON 3879 10806 3886 10809 3892 10786 3881 10783 TIME...MOT...LOC 2024Z 255DEG 19KT 3881 10810 JAM
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND JUNCTION CO 301 PM MDT WED AUG 27 2014 COZ001>014-017>023-UTZ022>025-027>029-280915- 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- INCLUDING THE CITIES OF...RANGELY...DINOSAUR...CRAIG...HAYDEN... MEEKER...RIO BLANCO...COLUMBINE...TOPONAS... STEAMBOAT SPRINGS AND VICINITY...GRAND JUNCTION...FRUITA... PALISADE...RIFLE...SILT...PARACHUTE...MESA...GLENWOOD SPRINGS... EAGLE...CARBONDALE...SKYWAY...ASPEN...VAIL...SNOWMASS... CEDAREDGE...DELTA...HOTCHKISS...MONTROSE...CRESTED BUTTE... TAYLOR PARK...MARBLE...BUFORD...TRAPPERS LAKE...GUNNISON... CIMARRON...RIDGWAY...GLADE PARK...OURAY...TELLURIDE...LAKE CITY... SILVERTON...RICO...HESPERUS...GATEWAY...NUCLA...CORTEZ... DOVE CREEK...MANCOS...DURANGO...BAYFIELD...IGNACIO... PAGOSA SPRINGS AND VICINITY...BLANDING...BLUFF...MEXICAN HAT... MANILA...DUTCH JOHN...VERNAL...JENSEN...BALLARD...FORT DUCHESNE... RANDLETT...MOAB...CASTLE VALLEY...THOMPSON SPRINGS... MONTICELLO AND VICINITY 301 PM MDT WED AUG 27 2014 ...WET WEATHER TO CONTINUE THROUGH THIS EVENING WITH SOME HIGH MOUNTAIN SNOW POSSIBLE... AN UNSEASONABLY COLD LOW PRESSURE SYSTEM OVER THE AREA WILL CONTINUE TO PRODUCE SHOWERS AND THUNDERSTORMS OVER MUCH OF EASTERN UTAH AND WESTERN COLORADO THROUGH THIS EVENING...WITH LOCALLY HEAVY RAIN STILL POSSIBLE. OVER THE HIGHER MOUNTAINS...COLDER AIR FILTERING INTO THE REGION WILL RESULT IN SNOWFALL AT HIGH ELEVATIONS MAINLY ABOVE 12000 FEET INTO TONIGHT. HOWEVER..SNOWFALL AMOUNTS WILL LIKELY BE MINIMAL. THIS FALL-LIKE WEATHER SYSTEM WILL BE EXITING THE REGION LATE TONIGHT ...FOLLOWED BY DRIER AIR AND A WARMING TREND INTO THE WEEKEND. FOR THE LATEST INFORMATION ON THIS STORM VISIT OUR WEB SITE AT WEATHER.GOV/GJT OR FOLLOW US ON FACEBOOK OR TWITTER.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
326 PM MDT WED AUG 27 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0325 PM HEAVY RAIN 6 ESE MONTICELLO 37.84N 109.23W
08/27/2014 U0.00 INCH SAN JUAN UT TRAINED SPOTTER
HEAVY RAIN AND PEA SIZE HAIL ACCUMULATING IN GRASSY
AREAS.
&&
EVENT NUMBER GJT1401409
MALEKSAPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
348 PM MDT WED AUG 27 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0346 PM HAIL 6 ESE MONTICELLO 37.84N 109.23W
08/27/2014 E0.70 INCH SAN JUAN UT TRAINED SPOTTER
0.50 INCHES OF RAINFALL WITH STORM. HAIL UP TO DIME
SIZE. WATER 2 INCHES DEEP RUNNING ALONG DIRT DRIVEWAY.
0346 PM HEAVY RAIN 6 ESE MONTICELLO 37.84N 109.23W
08/27/2014 M0.50 INCH SAN JUAN UT TRAINED SPOTTER
0.50 INCHES OF RAINFALL WITH STORM. HAIL UP TO DIME
SIZE. WATER 2 INCHES DEEP RUNNING ALONG DIRT DRIVEWAY.
&&
EVENT NUMBER GJT1401410
EVENT NUMBER GJT1401411
MALEKSAPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
406 PM MDT WED AUG 27 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0405 PM HAIL STEAMBOAT SPRINGS 40.48N 106.82W
08/27/2014 E0.50 INCH ROUTT CO TRAINED SPOTTER
&&
EVENT NUMBER GJT1401412
MALEKSAThe Grand Junction radar (KGJX), 24 km away, was scanning. The volume nearest the first event began at 22:39 UTC.
1 funnel cloud. Local standard time, as filed.
A funnel cloud over the northeast portion of the Grand Valley was observed and photographed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2014Every state in 2014This day in weather historyWarnings in Colorado, August 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: 531213.