A thunderstorm near St. George caused a severe wind gust.
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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.
A thunderstorm near St. George caused a severe wind gust.
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 Sep 16, 3:25 PM MST, 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SALT LAKE CITY UT 425 PM MDT TUE SEP 16 2008 .SYNOPSIS...STRONG HIGH PRESSURE ALOFT ACROSS THE INTERIOR WEST WILL PRESS EAST INTO THE PLAINS STATES MIDWEEK. A WEAK PACIFIC TROUGH WILL MOVE NORTHEAST THROUGH THE BASIN MIDWEEK...FOLLOWED BY A SECOND TROUGH THIS WEEKEND. && .DISCUSSION...WHILE MOST OF THE FORECAST AREA IS STILL DOMINATED BY A DRY AND STABLE AIRMASS...MID-LEVEL MOISTURE THAT MOVED INTO SOUTHERN UTAH THIS MORNING HAS ALLOWED ISOLATED THUNDERSTORMS TO FORM ALONG THE HIGHER TERRAIN...WITH A FEW OF THESE STORMS MOVING INTO THE VALLEYS IN THE LIGHT SOUTHEASTERLY FLOW. ACCORDINGLY...HAVE INCREASED POPS FOR THIS EVENING IN THE VALLEY LOCATIONS OF SOUTHERN UTAH. AS THE SHORTWAVE TROUGH CURRENTLY OVER THE COAST OF CALIFORNIA MOVES THROUGH NORTHERN NEVADA AND SOUTHERN IDAHO OVER THE NEXT 24 HOURS...ADDITIONAL MOISTURE WILL BE DRAWN UP INTO THE NORTHERN HALF OF THE CWA...EXPANDING THE THREAT OF ISOLATED CONVECTION INTO MOST OF THE FORECAST AREA FOR TOMORROW. THIS SLIGHTLY INCREASED MOISTURE WILL REMAIN IN THE AREA THROUGH AT LEAST SATURDAY...WHEN A PACIFIC TROUGH IS EXPECTED TO MOVE THROUGH THE GREAT BASIN. EVEN THOUGH THE ARRIVAL OF THIS TROUGH IS FORECAST TO BE LESS THAN 100 HOURS AWAY...THE ECMWF AND GFS DIFFER GREATLY ON HOW THIS TROUGH WILL IMPACT THE FORECAST AREA. THE GFS BRINGS IN A MUCH DEEPER CLOSED LOW THAT WOULD BRING COLDER AIR AND A GOOD CHANCE OF PRECIPITATION TO THE ENTIRE CWA. MEANWHILE...THE EC BRINGS THE TROUGH ONLY THROUGH NORTHERN UTAH AND SOUTHWEST WYOMING...SWEEPING AWAY THE LINGERING MOISTURE IN THE PROCESS. HAVE KEPT THE FORECAST TILTED TOWARD THE EC...AS THE GFS HAS BEEN VERY INCONSISTENT RECENTLY. HOWEVER...THE LATEST RUN OF THE EC TRENDS THE TROUGH EVEN FURTHER NORTH...SUCH THAT IT ONLY PROVIDES A GLANCING BLOW TO FAR NORTHERN UTAH. IF THE SOLUTION CONTINUES TO TREND FURTHER NORTH...THE POPS AND COOLING THAT ARE CURRENTLY FORECAST FOR SATURDAY IN THE NORTHERN HALF OF THE CWA WOULD BE VERY OVERDONE. BEYOND THIS WEEKEND TROUGH...BOTH THE EC AND GFS KEEP THE WESTERN CONUS IN GENERALLY UNSETTLED WEATHER...WITH A HIGH AMPLITUDE RIDGE EAST OF THE ROCKIES. HOWEVER...THE TWO MODELS STILL DIFFER GREATLY IN HOW MUCH MOISTURE WILL STILL BE LINGERING IN THE CWA...WHICH HELPS CREATE A GOOD AMOUNT OF UNCERTAINTY FOR THE EXTENDED FORECAST. FOR NOW...HAVE KEPT MUCH OF THE FORECAST RELATIVELY CLOSE TO CLIMATOLOGY. && .AVIATION...WINDS ARE EXPECTED TO SHIFT TO THE SOUTHEAST AT THE SLC TERMINAL AT 03Z. THERE IS A 30 PERCENT CHANCE OF THE SHIFT OCCURRING AS EARLY AS 02Z. HIGH CLOUDS WILL INCREASE OVERNIGHT. && .FIRE WEATHER...HIGH PRESSURE OVER THE AREA IS MOVING TO THE EAST...ALLOWING RELATIVE HUMIDITIES TO INCREASE FROM THE SOUTH. MOISTURE WILL CONTINUE TO INCREASE THROUGH THE WEEK AS A PACIFIC TROUGH MOVES INTO THE AREA THIS WEEKEND. WINDS WILL PICKUP FROM THE SOUTHWEST FRIDAY EVENING AHEAD OF THE SYSTEM THAT IS EXPECTED TO HAVE THE STRONGEST IMPACT ON SATURDAY INTO SUNDAY. THIS IS A RELATIVELY WEAK SYSTEM THAT WILL BRING PRECIPITATION...BUT IS NOT A SEASON ENDING STORM AS NO SNOW IS EXPECTED. HOWEVER...THERE IS A POSSIBILITY OF A STRONGER STORM IMPACTING THE AREA IN THE MIDDLE OF NEXT WEEK. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...NONE. WY...NONE. && PUBLIC...SCHOENING FIRE WEATHER...HOSENFELD/GIBSON AVIATION...STRUTHWOLF/SUTULA FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
The Cedar City radar (KICX), 85 km away, was scanning. The volume nearest the first event began at 22:55 UTC.
1 thunderstorm wind. Local standard time, as filed.
The St. George AWOS recorded a wind gust of 59 mph, caused by a thunderstorm in the area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2008Every state in 2008This day in weather historyWarnings in Utah, September 2008
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: 135418.