Several thunderstorms in northern Utah produced severe wind gusts.
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.
Several thunderstorms in northern Utah produced severe wind gusts.
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 30, 9:18 AM MST, 5 hours 2 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SALT LAKE CITY UT 1018 AM MDT TUE JUN 30 2009 .SYNOPSIS...HIGH PRESSURE WILL SLOWLY SHIFT EAST THROUGH FRIDAY...ALLOWING MOISTURE TO INCREASE ACROSS THE AREA. A DRIER AIRMASS WILL GRADUALLY SPREAD BACK INTO THE AREA FROM THE WEST OVER THE WEEKEND. && .DISCUSSION...HIGH PRESSURE OVER THE AREA WILL MIGRATE TO THE EAST TOMORROW. MIDLEVEL MOISTURE UNDER THE RIDGE IS INCREASING...WITH INCREASED CLOUDINESS OVER THE WEST AND SOUTH ALREADY TODAY. THE 12Z SLC SOUNDING SHOWS A PWAT VALUE OF 0.45 INCHES...UP FROM 0.31 INCHES OF YESTERDAYS 12Z SOUNDING. THE LOWER LEVELS ARE BEGINNING TO MOISTEN AS WELL...WITH DEWPOINTS A FEW DEGREES HIGHER AT MOST STATIONS STATEWIDE. HOWEVER...WITH MOST OF THE MOISTURE STILL CONFINED TO THE MID LEVELS...PRECIPITATION WILL LIKELY NOT HIT THE GROUND AND THE GREATEST THREAT WITH THE THUNDERSTORMS WILL BE GUSTY WINDS. ANY PRECIPITATION THAT FALLS WILL BE OVER THE HIGHER TERRAIN. A WEATHER DISTURBANCE CURRENTLY OVER SOUTHEASTERN NEVADA IS EXPECTED TO MOVE NORTHWARD ALONG THE STATE LINE AND CROSS THE NORTHWEST CORNER OF THE STATE OVERNIGHT. THE GOES SOUNDER INDICATES PW VALUES AROUND AN INCH ASSOCIATED WITH THIS DISTURBANCE...SO WILL LIKELY BOOST POPS OVER EXTREME NORTH AND WEST PORTION OF THE STATE OVERNIGHT WITH THE AFTERNOON PACKAGE. AS THE HIGH PRESSURE MOVES TO THE EAST...MOIST AIR WILL MOVE UP FROM THE SOUTH THROUGH FRIDAY. BOTH THE NAM AND GFS SHOW PWAT VALUES REACHING OVER AN INCH ACROSS MUCH OF THE STATE BY FRIDAY. WITH PW VALUES AROUND 2 STANDARD DEVIATIONS ABOVE NORMAL ACROSS MUCH OF THE STATE AND RELATIVELY LIGHT WINDS...HEAVY RAIN WILL BE THE MAIN THREAT THURSDAY AND FRIDAY. MOISTURE WILL BEGIN TO DECREASE FROM THE SOUTHWEST ON SATURDAY AS DRY AIR AHEAD OF A PACIFIC SYSTEM FILTERS INTO THE AREA. HOWEVER...ENOUGH MOISTURE WILL LINGER THAT AFTERNOON CONVECTION WILL LIKELY FORM OVER THE HIGHER TERRAIN ON SATURDAY. CONDITIONS WILL CONTINUE TO DRY THROUGH EARLY NEXT WEEK AHEAD OF THE APPROACHING PACIFIC SYSTEM. && .AVIATION...SURFACE WINDS AT THE SLC TERMINAL ARE EXPECTED TO TURN TO THE NORTHWEST BETWEEN 20Z AND 22Z TODAY. OTHERWISE...VFR CONDITIONS WILL PREVAIL THROUGH THE DAY. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...NONE. WY...NONE. && PUBLIC...HOSENFELD/TRAPHAGAN AVIATION...YOUNG FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SALT LAKE CITY UT 448 AM MDT TUE JUN 30 2009 UTZ001>016-019>021-517-518-WYZ021-011200- 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- 448 AM MDT TUE JUN 30 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF UTAH AND SOUTHWEST WYOMING. .DAY ONE...TODAY AND TONIGHT ISOLATED THUNDERSTORMS WILL DEVELOP TODAY...MAINLY OVER THE HIGH TERRAIN AND FAR NORTHWEST UTAH. SOME OF THESE STORMS COULD PRODUCE WIND GUSTS IN EXCESS OF 40 MPH. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY MOISTURE WILL CONTINUE TO INCREASE OVER THE AREA THROUGH FRIDAY...RESULTING IN INCREASED THUNDERSTORM COVERAGE. GUSTY WINDS ARE POSSIBLE WITH SOME OF THE STORMS. LOCALLY HEAVY RAIN WILL ALSO BECOME A POSSIBILITY...ESPECIALLY ON THURSDAY AND FRIDAY. THE AIRMASS WILL THEN GRADUALLY DRY THROUGH THE WEEKEND AND INTO EARLY NEXT WEEK. .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)
The Salt Lake City radar (KMTX), 152 km away, was scanning. The volume nearest the first event began at 21:18 UTC.
3 thunderstorm wind. Local standard time, as filed.
The West Salt Flats sensor recorded a wind gust of 67 mph, and 20 minutes later the North Salt Flats sensor recorded a gust of 62 mph.
The White Sage sensor recorded a 65 mph wind gust, and then the Ditto sensor recorded a 67 mph wind gust 5 minutes later.
A 60 mph wind gust was recorded at the Wellsville sensor.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2009Every state in 2009This day in weather historyWarnings in Utah, June 2009
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: 184866, 184867, 184868.