Moisture increased over Utah beginning July 14, but the air near the surface remained dry, so gusty winds due to thunderstorms were more common than flash flooding on the 14th. On July 15, this moisture became deeper, and combined with a weather disturbance moving through the area to help produce several flash floods across the state of Utah.
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 SLC wrote it up.
Moisture increased over Utah beginning July 14, but the air near the surface remained dry, so gusty winds due to thunderstorms were more common than flash flooding on the 14th. On July 15, this moisture became deeper, and combined with a weather disturbance moving through the area to help produce several flash floods across the state of Utah. A single flash flood was reported on July 16.
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 Salt Lake City, UT wrote its last area forecast discussion before the first event at Jul 14, 2:33 PM MST, 2 hours 27 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SALT LAKE CITY UT 333 PM MDT MON JUL 14 2014 .SYNOPSIS...THE SOUTHERN END OF A TROUGH MOVING THROUGH THE NORTHERN ROCKIES WILL INTERACT WITH MONSOON MOISTURE OVER CENTRAL AND SOUTHERN UTAH TUESDAY. A GENERALLY DRIER NORTHWEST FLOW WILL BECOME ESTABLISHED OVER MOST OF THE AREA WEDNESDAY AND THURSDAY. && .DISCUSSION...SHORT TERM...TWO PROBLEMS THIS EVENING. FIRST IS TAIL END OF NORTHERN ROCKIES SHORT WAVE IS KICKING OFF A LINE OF CONVECTION FROM SOUTHEAST IDAHO TO THE UT/ID BORDER. GOOD POTENTIAL FOR STRONG MICROBURST AND OUTFLOW WINDS TO 50 MPH FROM THIS CONVECTION AS IT MOVES FROM NEVADA INTO THE NORTHWEST MOUNTAINS AND DESERTS OF UTAH. HRRR SUGGESTS THESE STRONG WINDS WILL WEAKEN CONSIDERABLY BEFORE MAKING IT TO THE URBAN WASATCH FRONT...BUT THIS WILL BE SOMETHING TO WATCH OVER THE NEXT 6 HOURS. SOME THREAT TO HIGH PROFILE VEHICLES ON I-80 ACROSS THE DESERT FROM THESE GUSTS. OTHER SHORT TERM PROBLEM IS DEVELOPMENT OF THUNDERSTORMS RIGHT UNDER THE UPPER HIGH LOCATED ACROSS SOUTHERN UTAH. THESE STORMS ARE IN A MOIST ENVIRONMENT WITH AT LEAST 1 INCH OF PRECIPITABLE WATER AND THEY ARE BARELY MOVING. SO FAR THEY ARE OVER THE MOUNTAINS BUT HRRR SUGGESTS REDEVELOPMENT SOUTH AND WESTWARD THIS EVENING WHICH COULD CREATE A FLASH FLOOD THREAT IF THEY WANDER OVER CANYON COUNTRY. TUESDAY LOOKS LIKE AN ACTIVE DAY FOR THE SOUTHERN HALF OF UTAH AS THE SOUTHERN END OF THE NORTHERN ROCKIES TROUGH PUSHES NORTHWEST FLOW TO ABOUT I-70. THIS CREATES A CONFLUENCE ZONE AND SURFACE TROUGH EAST WEST ACROSS CENTRAL UTAH. DEEP MOISTURE WILL BE IN PLACE ACROSS ALL OF SOUTHERN UTAH. ALL MODELS INDICATE WIDESPREAD CONVECTION TUESDAY ON SOUTH SIDE OF THIS CONFLUENCE ZONE. WED/THUR LOOK QUIETER AS NORTHWEST FLOW SWEEPS OUT MOST OF THE MOISTURE EXCEPT ALONG THE UT/AZ BORDER. HIGH EVENTUALLY REDEVELOPS TO THE SOUTH OVER AZ/CA BORDER AND SOME MOISTURE AND EMBEDDED SHORT WAVES COME AROUND THE NORTH SIDE OF THE HIGH FRI/SAT...BRINGING A MORE WIDESPREAD THREAT OF TYPICAL SUMMER CONVECTION TO ALL OF UTAH FRIDAY AND INTO THE WEEKEND. && .AVIATION...THE SLC TERMINAL WILL SEE VFR CONDITIONS THROUGHOUT THE TAF PERIOD WITH SOME SCATTERED CUMULUS CLOUDS WITH MODERATE VERTICAL DEVELOPMENT AND HIGH THIN CLOUDS. THERE IS A 30 PERCENT CHANCE OF GUSTY NORTHWEST WINDS 01-03Z FROM THUNDERSTORMS OVER THE DESERT AND GREAT SALT LAKE. NORTHWEST WINDS ARE EXPECTED TO SHIFT TO THE SOUTHEAST AROUND 03-06Z. && .FIRE WEATHER...ISOLATED THUNDERSTORMS...SOME OF WHICH WILL BE DRY...WILL OCCUR OVER NORTHWEST UTAH THIS EVENING. THUNDERSTORMS OVER SOUTHERN UTAH WILL LIKELY HAVE WETTING RAINS WITH THEM. THE RIDGE OF HIGH PRESSURE OVER THE REGION TODAY WILL BE NUDGED SOUTHWEST ALLOWING A DRIER NORTHWEST FLOW TO PREVAIL ACROSS THE REGION BEGINNING WITH THE NORTHWEST TUESDAY AND ACROSS THE REMAINDER OF THE REGION WEDNESDAY THROUGH THURSDAY. RELATIVE HUMIDITY VALUES NEARING 10 PERCENT ARE EXPECTED OVER THE WESTERN AND EAST CENTRAL VALLEYS WEDNESDAY AND THURSDAY...WHILE RH READINGS NEAR 20 PERCENT ARE EXPECTED IN THE MOUNTAINS. SOME MOISTURE RETURNS LATE FRIDAY INTO SATURDAY...BUT THIS WILL BE SHORT LIVED AS A DRY SOUTHWEST FLOW IS EXPECTED TO DEVELOP BY LATE IN THE WEEKEND. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...NONE. WY...NONE. && PUBLIC...DUNN FIRE WEATHER...STRUTHWOLF AVIATION...YOUNG FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE) FOR FREQUENTLY ASKED QUESTIONS ABOUT THE AREA FORECAST DISCUSSION VISIT... HTTP://WEATHER.GOV/SALTLAKECITY/GENERAL/AFD_FAQS.PHP (ALL LOWER CASE)
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SALT LAKE CITY UT 502 AM MDT MON JUL 14 2014 UTZ001>016-019>021-517-518-WYZ021-151230- CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT- SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT- GREAT SALT LAKE DESERT AND MOUNTAINS-WASATCH MOUNTAIN VALLEYS- WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80- WESTERN UINTA MOUNTAINS-WASATCH PLATEAU/BOOK CLIFFS- WESTERN UINTA BASIN-CASTLE COUNTRY-SAN RAFAEL SWELL- SANPETE/SEVIER VALLEYS-WEST CENTRAL UTAH-SOUTHWEST UTAH- UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH- GLEN CANYON RECREATION AREA/LAKE POWELL-CENTRAL MOUNTAINS- SOUTHERN MOUNTAINS-SOUTHWEST WYOMING- 502 AM MDT MON JUL 14 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF UTAH AND SOUTHWEST WYOMING. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS WILL REMAIN MOSTLY CONFINED TO SOUTHERN UTAH TODAY. LOCALLY HEAVY RAIN WILL ACCOMPANY THE STRONGER STORMS ACROSS FAR SOUTHERN UTAH...BRINGING AN ELEVATED THREAT OF FLASH FLOODING TO THE MOST PRONE AREAS SUCH AS SLOT CANYONS. SHOWERS WILL START TO SPREAD INTO NORTHERN UTAH OVERNIGHT...WITH THE GREATEST THREAT THERE BEING LOCAL GUSTY OUTFLOW WINDS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY SHOWERS AND THUNDERSTORMS WILL BE MORE WIDESPREAD ON TUESDAY AS MOISTURE INCREASES AREAWIDE. AREA SUCH AS SLOT CANYONS...DRY WASHES...AND BURN SCARS ACROSS SOUTHERN AND CENTRAL UTAH WILL SEE AN INCREASED THREAT OF FLASH FLOODING. DRIER AIR WILL THEN QUICKLY MOVE INTO THE AREA BEGINNING WEDNESDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY/ (ALL LOWER CASE) FOR INFORMATION ON POTENTIAL ROAD TRAVEL IMPACTS VISIT... HTTP://WWW.UDOTTRAFFIC.UTAH.GOV/ROADWEATHERFORECAST.ASPX
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 338 PM MDT MON JUL 14 2014 UTZ005-142230- GREAT SALT LAKE DESERT AND MOUNTAINS UT- 338 PM MDT MON JUL 14 2014 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN TOOELE AND WESTERN BOX ELDER COUNTIES UNTIL 430 PM MDT... AT 334 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM THE UTAH/IDAHO BORDER SOUTH TO THE BONNEVILLE SALT FLATS...AND MOVING EAST AT 30 MPH. WINDS OF 40 TO 55 MPH WILL BE POSSIBLE...AS WELL AS ISOLATED AREAS OF HALF INCH HAIL... THESE STORMS WILL BE APPROACHING THE INTERSTATE 80 CORRIDOR ACROSS THE SALT FLATS BY 430 PM MDT WITH SIMILAR WINDS. BLOWING DUST MAY REDUCE VISIBILITIES ALONG AREA ROADWAYS... LOCATIONS IMPACTED INCLUDE... SNOWVILLE...PARK VALLEY...ETNA...YOST...ROSETTE...STANDROD...GROUSE CREEK...LOCOMOTIVE SPRINGS...LUCIN...CURLEW JUNCTION AND LYNN. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF THREATENING WEATHER APPROACHES...TAKE SHELTER IN A STURDY BUILDING. STRONG WINDS WITH THESE STORMS MAY OCCUR WELL AHEAD OF ANY RAIN OR LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER. SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4199 11265 4079 11341 4098 11404 4199 11403 TIME...MOT...LOC 2134Z 275DEG 26KT 4198 11346 4107 11404 GM
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 437 PM MDT MON JUL 14 2014 UTZ002-005-142330- NORTHERN WASATCH FRONT UT-GREAT SALT LAKE DESERT AND MOUNTAINS UT- 437 PM MDT MON JUL 14 2014 ...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL TOOELE AND CENTRAL BOX ELDER COUNTIES UNTIL 530 PM MDT... AT 435 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM THE UTAH/IDAHO BORDER TO THE BONNEVILLE SALT FLATS...AND MOVING EAST AT 25 MPH. WINDS OF 40 TO 55 MPH WILL BE POSSIBLE...AS WILL LOCALIZED AREAS OF PEA SIZED HAIL. AREAS OF BLOWING DUST MAY REDUCE VISIBILITIES ON AREA ROADWAYS. LOCATIONS IMPACTED INCLUDE... SNOWVILLE...HOWELL...LOCOMOTIVE SPRINGS AND CURLEW JUNCTION. THE INTERSTATE 84 NEAR THE IDAHO BORDER. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF THREATENING WEATHER APPROACHES...TAKE SHELTER IN A STURDY BUILDING. STRONG WINDS WITH THESE STORMS MAY OCCUR WELL AHEAD OF ANY RAIN OR LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER. SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4199 11233 4088 11333 4101 11401 4198 11316 TIME...MOT...LOC 2235Z 274DEG 20KT 4198 11286 4101 11380 GM
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 535 PM MDT MON JUL 14 2014 UTZ001-002-005-007-150030- NORTHERN WASATCH FRONT UT-GREAT SALT LAKE DESERT AND MOUNTAINS UT- WASATCH MOUNTAINS I-80 NORTH UT-CACHE VALLEY/UTAH PORTION UT- 535 PM MDT MON JUL 14 2014 ...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL CACHE...WESTERN WEBER...NORTHWESTERN DAVIS...NORTHEASTERN TOOELE AND SOUTHEASTERN BOX ELDER COUNTIES UNTIL 630 PM MDT... AT 531 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SHOWERS PRODUCING GUSTY WINDS ALONG A LINE EXTENDING FROM TREMONTON SOUTHWEST ACROSS THE GREAT SALT LAKE...AND MOVING SOUTH SOUTHEAST AT 35 MPH. WINDS OF 40 TO 55 MPH WILL BE POSSIBLE. LOCATIONS IMPACTED INCLUDE... OGDEN...LAYTON...BRIGHAM CITY...ROY...CLEARFIELD...SYRACUSE... CLINTON...NORTH OGDEN...SOUTH OGDEN...WASHINGTON TERRACE... RIVERDALE...HOOPER...SOUTH WEBER...PERRY...WELLSVILLE...WILLARD... MARRIOTT-SLATERVILLE...UINTAH...BEAR RIVER CITY AND MANTUA. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF THREATENING WEATHER APPROACHES...TAKE SHELTER IN A STURDY BUILDING. IF ON OR NEAR THE GREAT SALT LAKE...INCLUDING WILLARD BAY...GET OUT OF THE WATER AND MOVE INDOORS OR INSIDE A VEHICLE. && LAT...LON 4114 11188 4079 11269 4134 11299 4175 11201 TIME...MOT...LOC 2331Z 342DEG 31KT 4169 11198 4130 11291 GM
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 552 PM MDT MON JUL 14 2014 UTZ016-518-150030- SOUTHWEST UTAH UT-SOUTHERN UTAH MOUNTAINS UT- 552 PM MDT MON JUL 14 2014 ...SPECIAL WEATHER STATEMENT... AT 548 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER PAROWAN...OR 19 MILES NORTHEAST OF CEDAR CITY...THAT IS NEARLY STATIONARY... TORRENTIAL RAIN...PEA SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE. THOSE TRAVELING ALONG INTERSTATE 15 THROUGH PAROWAN WITHIN THE NEXT 45 MINUTES SHOULD PREPARE FOR REDUCED VISIBILITIES AND PONDING OF WATER ON THE ROADWAY. LOCATIONS IMPACTED INCLUDE... PAROWAN AND PARAGONAH. INTERSTATE 15. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 3799 11294 3800 11269 3784 11274 3784 11295 TIME...MOT...LOC 2348Z 317DEG 36KT 3785 11279 GM
The Grand Junction radar (KGJX), 217 km away, was scanning. The volume nearest the first event began at 00:00 UTC.
9 flash flood, 7 thunderstorm wind. Local standard time, as filed.
A flash flood was reported in Nine Mile Canyon and recorded on video.
The Promontory Point sensor recorded a maximum wind gust of 72 mph.
The Wig Mountain sensor recorded a peak wind gust of 59 mph.
A 60 mph wind gust was recorded at the Salt Flats sensor in the Dugway Proving Ground mesonet.
A sensor in Saratoga Springs recorded a peak wind gust of 62 mph.
The Camel Back Mountain sensor in the Dugway Proving Ground mesonet recorded a wind gust of 59 mph.
A 63 mph wind gust was recorded at the I-80 at Grassey, UT sensor.
A flash flood occurred on Utah State Route 12 at Milepost 6. The westbound lane was blocked by debris that was about 4 feet deep and 20 feet long.
Flash flooding occurred in Red Canyon after heavy rainfall, and was recorded on video.
The Five Mile RAWS recorded a maximum wind gust of 76 mph.
Flash flooding occurred across Nine Mile Canyon Road, with boulders and mud pushed onto the roadway by the flood waters.
Heavy rain caused flash flooding in Zion National Park. Several waterfalls were reported across the park, and flash floods were observed in Birch Creek and multiple other drainages across the southern end of the park.
Flash flooding was observed along Pleasant Creek in Capitol Reef National Park, with the worst flooding at the south end of the Scenic Drive.
A flash flood was reported in lower Johnson Canyon after estimated rainfall of more than 2 inches.
Pine Creek, a tributary of the Escalante River, experienced a flash flood due to heavy rainfall. Flows on Pine Creek reached 1000 cfs before the creek flowed into the larger Escalante River.
Heavy rain caused flash flooding in multiple neighborhoods in Enterprise, Utah. Street flooding was widespread, and several homes and business were impacted by flood waters. Two homes experienced extensive damage, with basement flooding destroying furniture and other possessions, while other homes had less significant damage.
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, July 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: 537596, 537580, 537582, 537585, 537587, 537588, 537589, 537598, 537608, 537590, 537597, 537599, 537600, 537603, 537601, 537846.