Strong thunderstorms continued to move across northern Utah on June 2 and 3, with several storms producing strong gusty winds or large hail. While the deepest moisture remained over southern Utah during this time, one storm in northern Utah was moist enough to produce flash flooding on the Patch Springs Fire burn scar.
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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 SLC wrote it up.
Strong thunderstorms continued to move across northern Utah on June 2 and 3, with several storms producing strong gusty winds or large hail. While the deepest moisture remained over southern Utah during this time, one storm in northern Utah was moist enough to produce flash flooding on the Patch Springs Fire burn scar.
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 Jun 2, 3:04 PM MST, 4 hours 56 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SALT LAKE CITY UT 404 PM MDT TUE JUN 2 2015 .SYNOPSIS...A WEAK PACIFIC STORM SYSTEM WILL GRAZE NORTHERN UTAH WEDNESDAY AND WEDNESDAY NIGHT. A CLOSED LOW OFF THE CALIFORNIA COAST WILL BEGIN TO SEND MOISTURE NORTH INTO UTAH ON FRIDAY...CONTINUING INTO THE WEEKEND. && .SHORT TERM (THROUGH 00Z FRIDAY)...A MEAN SOUTHWESTERLY FLOW ALOFT PREVAILS ACROSS THE REGION THIS AFTERNOON...WHILE A STALLED FRONTAL BOUNDARY REMAINS SITUATED ACROSS CENTRAL UTAH. TO THE SOUTH OF THIS BOUNDARY A WARM AND VERY DRY AIRMASS RESIDES ACROSS SOUTHERN UT...WHILE TO THE NORTH TEMPERATURES ARE CONSIDERABLY COOLER THIS AFTERNOON AS COMPARED TO MONDAY. LINGERING MOISTURE NEAR THE ID BORDER WILL SUPPORT A SMALL THREAT FOR SHOWERS AND THUNDERSTORMS INTO THE EARLY EVENING HOURS...WHILE THE REMAINDER OF THE FORECAST AREA REMAINS DRY. A WEAK SHORTWAVE FEATURE CURRENTLY APPROACHING THE PACIFIC COAST IS FORECAST TO ROTATE INLAND OVERNIGHT BEFORE EJECTING ACROSS THE EASTERN GREAT BASIN WEDNESDAY. THIS COUPLED WITH MOISTURE IN PLACE NORTH OF THE AFOREMENTIONED BOUNDARY WILL BRING A BETTER CHANCE FOR SHOWERS AND THUNDERSTORMS NORTH OF I-80 DURING THE AFTERNOON...WITH ADDITIONAL CONVECTION EXPECTED TO DEVELOP ACROSS NORTHEAST NV POTENTIALLY SPREADING INTO THE WEST DESERT AND PERHAPS REACHING THE WASATCH FRONT DURING THE EVENING HOURS. STRENGTHENING MID LEVEL WIND FIELDS IN RESPONSE TO THE APPROACHING WAVE WILL ALLOW FOR SHEAR VALUES SUPPORTIVE OF STRONGER ORGANIZED CONVECTION WITH GUSTY WINDS BEING THE PRIMARY THREAT GIVEN A DEEPLY MIXED BOUNDARY LAYER. THE NEXT UPSTREAM WAVE IS FORECAST TO DIG ALONG THE PACIFIC COAST LATE WEDNESDAY INTO THURSDAY...BACKING THE FLOW ALOFT ACROSS THE FORECAST AREA...AND ADVECTING THE DRIER AIR CURRENTLY IN PLACE ACROSS SOUTHERN UT NORTHWARD ACROSS THE REMAINDER OF THE AREA. AS SUCH HAVE CONTINUED WITH THE GOING TREND FOR THURSDAY ACROSS THE NORTH. .LONG TERM (AFTER 00Z FRIDAY)...UPPER LOW WILL CONTINUE DIGGING SOUTH THURSDAY NIGHT...CLOSING OFF OVER SOCAL BY DAYBREAK FRIDAY. 12Z GLOBALS CONTINUE TO INDICATE A STRONG MOISTURE TAP FROM THE TROPICAL EASTERN PACIFIC...AND ABSORPTION OF REMNANT ENERGY FROM WHAT WAS HURRICANE ANDRES. THIS MOISTURE/ENERGY IS EXPECTED TO REACH SOUTHEASTERN UTAH FRIDAY MORNING WITH SIGNIFICANT MOISTURE ADVECTION WRAPPING NORTH AND WEST INTO THE SYSTEM FROM THERE DURING THE DAY. WITH UPPER LOW POSITION ONCE AGAIN SETTING UP NEAR STATIONARY OVER SOCAL...BOTH THE DOWNSTREAM JET AND DIFFLUENCE ALOFT WILL AID LARGE SCALE FORCING ACROSS THE AREA FRIDAY THROUGH SATURDAY. PWATS OF SOME 2 TO 3 DEVIATIONS ABOVE NORMAL CONTINUE TO BE PORTRAYED BY NAEFS MEAN PW OWING TO THE RARITY OF MOISTURE THIS DEEP THIS TIME OF YEAR. WITH CONTINUED RUN TO RUN CONSISTENCY IN GLOBALS OPTED TO CONTINUE AN UPWARD TREND IN POPS...ESPECIALLY ALONG THE MOUNTAIN SPINES AND POINTS EAST WHERE POTENTIALLY SIGNIFICANT PRECIP IS LOOKING MORE LIKELY. BOTH 12Z EC/GFS HINTING AT A SIGNIFICANT DRY SLOT DEVELOPING FROM THE SOUTHWEST SATURDAY NIGHT INTO SUNDAY AS THE PARENT LOW ELONGATES AND BECOMES MORE DIFFUSE...THEN STRETCHING FROM NORTHERN NV SOUTHWEST INTO THE EASTERN PACIFIC. NOT OVERLY CONFIDENT YET ON PLACEMENT OF THIS DRY SLOT ON SUNDAY...BUT BULK OF THE AREA SHOULD BE EXPERIENCING A NET DRYING TREND WITH DIMINISHED FORCING...THIS OWING TO MAINTENANCE OF SLIGHT CHANCE/CHANCE POPS IN LATEST FORECAST. EC/GFS DIVERGE IN DETAIL THEREAFTER...SPECIFICALLY IN REGARDS TO TRACK AND SIGNIFICANCE OF NOW HURRICANE BLANCA SPINNING IN THE EASTERN PACIFIC. THOUGH INITIAL TRACK ONLY DIFFERS BY A FEW HUNDRED MILES...GFS TAKES THE CIRCULATION NORTH ALONG THE GULF OF CALIFORNIA /OVER WARM WATER/ MAINTAINING A STRONGER SYSTEM INTO THE DESERT SOUTHWEST. EC TRACKS THIS WEST ALONG THE BAJA COAST OVER THE MUCH COLDER WATERS OF THE EASTERN PACIFIC AND ALLOWS MUCH OF THE ENERGY TO DISSIPATE QUITE RAPIDLY EARLY NEXT WEEK. OPTED TO WAIT FOR A MORE CONSISTENT SOLUTION BEFORE GOING ONE WAY OR THE OTHER REGARDING AREAL EXTENT OF AND POTENTIAL OF PRECIP EARLY NEXT WEEK. && .AVIATION...OPERATIONAL WEATHER CONCERNS WILL REMAIN MINIMAL AT THE KSLC TERMINAL THROUGH THE OVERNIGHT HOURS. NORTHWEST WINDS ARE EXPECTED TO SWITCH BACK TO THE SOUTHEAST BETWEEN 04-06Z AND WILL REMAIN IN PLACE THROUGH THE NIGHT. && .FIRE WEATHER...A FRONTAL BOUNDARY STALLED ACROSS CENTRAL UTAH WILL RETREAT NORTHWARD JUST A BIT WEDNESDAY. TO THE SOUTH OF THIS BOUNDARY A VERY DRY AIRMASS COUPLED WITH GUSTY SOUTH WINDS WILL PREVAIL THROUGH THE REMAINDER OF THE AFTERNOON...AND REDEVELOP ONCE AGAIN WEDNESDAY AFTERNOON. TO THE NORTH OF THIS BOUNDARY A COOLER AIRMASS WILL RESIDE ACROSS NORTHERN UT...WHERE LINGERING MOISTURE WILL MAINTAIN A SMALL CHANCE FOR SHOWERS AND THUNDERSTORMS. A DRIER SOUTHERLY FLOW IS EXPECTED TO DEVELOP AREA-WIDE THURSDAY...BEFORE MOISTURE SURGES NORTHWARD INTO THE REGION FRIDAY AND SATURDAY RESULTING IN A GOOD CHANCE FOR SHOWERS AND THUNDERSTORMS CAPABLE OF PRODUCING WETTING RAINS. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...NONE. WY...NONE. && SEAMAN/MERRILL 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)
The Salt Lake City radar (KMTX), 84 km away, was scanning. The volume nearest the first event began at 02:59 UTC.
8 thunderstorm wind, 4 hail, 1 debris flow. Local standard time, as filed.
The SR-85 at Dannon Way sensor recorded a peak wind gust of 58 mph.
The North Salt Flats sensor in the Dugway Proving Ground mesonet recorded a maximum wind gust of 60 mph.
A peak wind gust of 62 mph was recorded at the Center Tailings sensor.
Strong thunderstorms pushed through far northern Utah, producing a peak wind gust of 64 mph at the Curlew Junction sensor. In addition, this storm damaged an irrigation system near Snowville and downed many tree branches in the area.
One inch diameter hail was reported near Clarkston.
Hail up to the size of ping pong balls was reported near Promontory, north of the Great Salt Lake.
A strong thunderstorm produced severe winds across the northern end of the Great Salt Lake, with peak recorded gusts of 65 mph at the I-15 at Plymouth sensor, 62 mph at Promontory Point, and 58 mph at the I-15 at Tremonton sensor. In addition, trees were knocked down as the storm moved through Garland, including one tree that fell onto a car.
Nickel-sized hail was reported in Cornish, Utah, near the Idaho border in Cache Valley.
A 66 mph wind gust was recorded by the Legacy Parkway sensor.
Multiple sensors on the west end of the Salt Lake Valley recorded severe wind gusts with a passing thunderstorm, including 71 mph at the Mountain View at Dannon Way sensor, 64 at the Baccus Highway sensor, and 58 mph at the Trans-Jordan Landfill sensor. In addition, one of these microbursts made it to the Salt Lake City International Airport, with a recorded wind gust as high as 70 mph on the FAA Midfield sensor. These winds caused significant impacts to the terminal, with a total of 837 minutes of holding time on the ground, 11 flight diversions, several planes that had to circle the airport, and 3 flight cancellations.
Heavy rain fell on the Patch Springs Fire burn scar, causing a debris flow along the southern end of the scar, with debris flowing all the way to Johnson Pass Road.
Nickel-sized hail was reported in Providence.
Strong thunderstorm winds knocked down several large trees throughout the Cache Valley, including near the cities of Logan and Cornish.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2015Every state in 2015This day in weather historyWarnings in Utah, June 2015
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: 591680, 591681, 591682, 591722, 591712, 591713, 591724, 591714, 591683, 591727, 591741, 591715, 591719.