Gusty pre-frontal winds were observed near the Salt Lake and Tooele valleys ahead of an incoming winter storm.
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.
Gusty pre-frontal winds were observed near the Salt Lake and Tooele valleys ahead of an incoming winter storm.
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 Apr 8, 1:47 PM MST, 28 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
247 PM MDT WED APR 8 2009
.SYNOPSIS...A MOIST PACIFIC STORM SYSTEM WILL IMPACT MUCH OF UTAH
AND SOUTHWEST WYOMING THROUGH TOMORROW. HIGH PRESSURE WILL
BRIEFLY RETURN FRIDAY...BEFORE ANOTHER SYSTEM PASSES THROUGH THE
REGION SATURDAY.
&&
.DISCUSSION...WATER VAPOR LOOP SHOWS AN UPPER LOW ENTERING THE GREAT
BASIN. THE NEXT DISTURBANCES WERE OVER THE PACIFIC...LOCATED NEAR
135W/45N AND 150W/45N. ACARS 400-250MB WIND OBSERVATIONS REVEAL A
100-130KT CYCLONICALLY CURVED JET FROM SOUTHERN CALIFORNIA INTO
CENTRAL UTAH. 12Z 700MB ANALYSIS PLACED AN APPROACHING TROUGH OVER
NEVADA. COLD ADVECTION WAS ALREADY OCCURRING LOCALLY...WITH +2C AT
KSLC AND -6C UPSTREAM AT KDRA. -9C AIR WAS LOCATED OVER NORTHERN
CALIFORNIA.
12Z KSLC RAOB INDICATES 5C OF COOLING ABOVE 600MB...WITH 3 TO 5C OF
WARMING BELOW 800MB DURING THE PAST 24 HOURS. DRY ADIABATIC LAPSE
RATES WERE IN PLACE FROM AN INVERSION LOCATED AT 825MB TO 525MB.
MIDLEVEL MOISTURE HAS INCREASED...WITH VERY DRY LOW LEVELS IN PLACE
AS NOTED BY THE INVERTED-V SIGNATURE. PRECIPITABLE WATER VALUE HAS
RISEN ABOVE A QUARTER OF AN INCH.
CONVECTION HAS BEEN DEEPENING AND BECOMING MORE WIDESPREAD DURING
THE LAST SEVERAL HOURS AS THE MID LEVEL LOW BEGINS TO MOVE FROM
NORTHEAST NEVADA INTO NORTHERN UTAH IN CONCERT WITH DIURNAL HEATING.
SCATTERED CONVECTION SHOULD REMAIN IN PLACE THROUGH THE EVENING
HOURS UNTIL THE LOSS OF DIURNAL HEATING TAKES PLACE. WILL HAVE TO
KEEP AN EYE OUT FOR LOCALLY STRONG CONVECTION GIVEN THE COLD CORE
ALOFT AND VERY DRY LOWER LEVELS. MAINTAINED WORDING IN THE HAZARDOUS
WEATHER OUTLOOK.
GUSTY SOUTHWEST WINDS WHICH DEVELOPED POST FRONTAL DURING THE
AFTERNOON SHOULD SUBSIDE THIS EVENING AS THE PRESSURE RISES
ASSOCIATED WITH THE BOUNDARY PROPAGATE EASTWARD AND DEEP LAYER
MIXING SUBSIDES.
PRECIPITATION WILL CONTINUE TO BECOME MORE WIDESPREAD ACROSS
NORTHERN UTAH TONIGHT WITH SATURATION AND WRAP-AROUND MOISTURE. SNOW
IN THE MOUNTAINS SHOULD BECOME MAXIMIZED DURING THIS TIME...AND
ACCUMULATIONS WILL BECOME LIKELY IN THE MOUNTAIN VALLEYS (ALTHOUGH
AMOUNTS SHOULD BE LIMITED BY THE WARM GROUND). AS SNOW LEVELS FALL
RAIN SHOULD MIX WITH SNOW ON THE BENCHES.
RIDGING DEVELOPS DURING THE DAY TOMORROW...EFFECTIVELY ENDING
PRECIPITATION ACROSS THE MOUNTAINS.
THE NEXT PAIR OF DISTURBANCES WILL AFFECT THE REGION HEADING INTO
THE WEEKEND. SIMILAR TO THE CURRENT STORM...SNOW LEVELS WILL BE
QUITE HIGH. CONVECTION WILL BE POSSIBLE FRIDAY AFTERNOON AND
SATURDAY WHEN THE SHORT RANGE ENSEMBLES INDICATE A GOOD CHANCE OF
NEGATIVE LIFTED INDEX VALUES.
BOTH THE GFS AND EUROPEAN INDICATE RIDGING WILL TAKE HOLD LATER
SUNDAY INTO THE NEW WORK WEEK...BEFORE A GULF OF ALASKA DISTURBANCE
AFFECTS THE GREAT BASIN MID WEEK. THE GFS IS STILL A BIT MORE
PROGRESSIVE THAN THE EUROPEAN...BUT IS TRENDING TOWARD AN EVENTUAL
CUTOFF SCENERIO.
&&
.AVIATION...A PACIFIC SYSTEM MOVING ACROSS THE WESTERN UNITED STATES
WILL BRING A CHANCE OF RAIN SHOWERS TO THE SLC TERMINAL TODAY.
ENOUGH INSTABILITY IS PRESENT ACROSS NORTHERN UTAH THAT AN ISOLATED
THUNDERSTORM IN THE SALT LAKE VALLEY CAN NOT BE RULED OUT THROUGHOUT
THE AFTERNOON...ALTHOUGH THE CHANCE OF ANY PARTICULAR THUNDERSTORM
IMPACTING THE TERMINAL IS 10 PERCENT.
&&
.SLC WATCHES/WARNINGS/ADVISORIES...
UT...WINTER STORM WARNING UNTIL NOON THURSDAY FOR UTZ007-UTZ008-
UTZ009.
WINTER WEATHER ADVISORY UNTIL NOON THURSDAY FOR UTZ010-UTZ517.
WIND ADVISORY UNTIL 6 PM WEDNESDAY FOR UTZ003-UTZ004-UTZ005-
UTZ015.
WY...NONE.
&&
PUBLIC...ROGOWSKI
AVIATION...KRUSE
FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE SALT LAKE CITY UT 308 PM MDT WED APR 8 2009 UTZ001>016-019>021-517-518-WYZ021-091200- 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- 308 PM MDT WED APR 8 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF UTAH AND SOUTHWEST WYOMING. .DAY ONE...THIS EVENING AND TONIGHT A PACIFIC STORM SYSTEM WILL IMPACT THE OUTLOOK AREA TONIGHT...BRINGING VALLEY RAIN AND MOUNTAIN SNOW...ALONG WITH A CHANCE FOR THUNDERSTORMS. SNOW WILL LINGER ACROSS THE MOUNTAINS OF NORTHERN UTAH INTO THURSDAY AFTERNOON. SIGNIFICANT ACCUMULATIONS ARE EXPECTED ACROSS THE HIGHER TERRAIN OF NORTHERN AND CENTRAL UTAH. SNOW ACCUMULATION IS EXPECTED IN THE WASATCH MOUNTAIN VALLEYS...WITH SNOW MIXING IN WITH RAIN ON THE BENCHES. A FEW OF THE THUNDERSTORMS MAY BECOME STRONG DURING THE LATE AFTERNOON BRINGING THE POTENTIAL FOR SMALL HAIL AND LOCALLY GUSTY WINDS...PARTICULARLY OVER NORTHERN UTAH. GUSTY WINDS ACROSS PORTIONS OF WESTERN AND NORTHERN UTAH WILL DIMINISH HEADING INTO SUNSET. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY ANOTHER STORM SYSTEM IMPACT MUCH OF THE AREA LATE FRIDAY THROUGH SATURDAY...BRINGING THE NEXT OPPORTUNITY FOR VALLEY RAN AND HIGH ELEVATION SNOWFALL. THE HEAVIEST PRECIPITATION IS EXPECTED ACROSS SOUTHERN UTAH FRIDAY NIGHT INTO SATURDAY...WITH MOISTURE SPREADING INTO CENTRAL AND NORTHERN UTAH BY SATURDAY AFTERNOON. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. ROGOWSKI FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
1 high wind. Local standard time, as filed.
Widely scattered gusts greater than 58 mph were observed near the Salt Lake and Tooele valleys, including a 60 mph gust at the Great Salt Lake Marina and a 61 mph gust at the South Mountain 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, April 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: 167686.