Thunderstorms brought severe wind gusts to Uinta County, Wyoming.
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.
Thunderstorms brought severe wind gusts to Uinta County, Wyoming.
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 Aug 9, 2:39 PM MST, 3 hours 48 minutes earlier.
Area Forecast Discussion National Weather Service Salt Lake City UT 339 PM MDT Fri Aug 9 2024 .SYNOPSIS...A monsoon surge continues to bring the threat of heavy rain to the southern half of Utah, while the northern half of Utah on the edge of the moisture will see the threat of microbursts associated with any thunderstorms into the weekend. Conditions will begin to dry out by Monday as the deeper moisture is shunted east. && .SHORT TERM (Through 12z Sunday)...Afternoon satellite and H5 analysis place the local region on the northwestern periphery of broad high pressure extending from the southern plains west across the desert southwest. The western periphery of monsoonal moisture about the high appears oriented over central Nevada...with a notable downtick in PWAT extending further west into western Nevada attm. From Washington County northwest across this gradient noting PWAT values decrease from 1.1" to roughly .50" indicating the strong moisture gradient. This region is one focus for convection that will continue to spread into western/northern Utah through this evening, with diurnal initiation being somewhat aided by subtle stream-wise vorticity within near westerly flow. The other area of convective initiation today has been over the central/southern mtns and driven by namely diurnal destabilization over the elevated heat sources. For western and northern Utah steep lapse in place will allow for moderately strong updraft formation through the peak heating hours today, while dry low levels/high LCL's will drive DCAPE values to 1500-1700 J/Kg...this owing to elevated microburst potential, and at the least gusty outflow boundaries (in time). Central and southern Utah however remain locked in the more primed monsoonal airmass supporting local heavy rain potential. Two different areas, and a tale of two different storm modes. Minimal change is expected in the big picture regarding high placement and breadth of moisture over the next 24 hours...although consensus is for a slight easterly shift of the aforementioned moisture gradient into eastern Nevada. CAMs suggesting similar convective initiation, just a skosh further downstream and over western Utah vs. eastern Nevada (like today). Anticipating similar storm modes as well...greater wind potential across the northern half of the area Saturday, and better potential for locally heavy rainers across the south. .LONG TERM (After 12z Sunday), Issued 434 AM MDT... A series of shortwaves Sunday-Tuesday will interact with anomalously high PWATs that are being advected in from moist southwesterly flow along the western periphery of a ridge centered over west Texas. This will result in daily convection each afternoon across the entire CWA. A much drier airmass will settle in by midweek as moist southwesterly flow transitions to a dry westerly flow. ~37% of ensemble members keep conditions mostly dry through Friday, but the remaining 63% of members begin to advect more moisture into the CWA that could lead to more diurnal convection. Instability will be enhanced across northern Utah/SW Wyoming on Sunday as mean ensemble CAPE values ~500 J/kg and shear ~35kts will increase the risk for strong to severe storms. Storm motions across the north will be relatively fast which will help to limit the flash flood threat, but slower storm motions and PWATs near the 90th percentile across southern Utah will increase the flash flood threat. Slightly less instability and moisture Monday and Tuesday across northern Utah along with faster storm motions across southern Utah indicates that Sunday will likely be the day with the greatest risk for strong convection across the north and flash flooding across the south. By Wednesday a much drier airmass along with gusty southwesterly winds across portions of the CWA could increase the fire weather risk. Currently, RH looks to remain >15% for most locations which would help to lessen the fire weather risk. This window of dry and windy weather appears to be short-lived as 63% of ensemble members bring a return to a moist southerly flow by Friday. && .AVIATION....AVIATION...KSLC...Light southeast winds will prevail through the evening, but showers and thunderstorms with gusty, erratic outflow winds could alter direction and enhance speeds from 00-03Z. Southeast winds, with gusts around 20 knots, are likely overnight. There is around a 30% chance for showers and thunderstorms capable of gusty, erratic outflow winds from roughly 20-03Z. .REST OF UTAH AND SOUTHWEST WYOMING...Showers and thunderstorms capable of localized heavy rain and gusty, erratic outflow winds throughout southwest Wyoming and northern Utah will diminish around 03Z. Showers and thunderstorms with the same threats throughout southern Utah will continue through around 06Z. There will be largely dry conditions overnight. Scattered showers and thunderstorms are likely for southwest Wyoming and much of Utah from roughly 20-03Z. && .FIRE WEATHER...Deep moisture associated with a modest monsoonal push is spreading further north today, and trends moving forward through the weekend will continue that same path. For central and southern Utah potential for scattered heavy rain events will remain elevated, while storms developing in the north will favor more wind than rain, with microburst wind potential remaining elevated each for the next few days. A combination of net weakening of the the high pressure driving this moisture surge, and the grazing of a weak disturbance early next week will begin to dry things out from the west by midweek of next week. Looks dry and breezy across the western zones (at least) for the midweek period coming up. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && Merrill/Wilson/Mahan For more information from NOAA's National Weather Service visit... http://weather.gov/saltlakecity
Special Weather Statement
National Weather Service Salt Lake City UT
442 PM MDT Fri Aug 9 2024
UTZ101-102-104>106-115-092345-
Salt Lake Valley UT-Western Millard and Juab Counties UT-
Northern Wasatch Front UT-Utah Valley UT-Tooele and Rush Valleys UT-
Great Salt Lake Desert and Mountains UT-
442 PM MDT Fri Aug 9 2024
...Strong thunderstorms will impact portions of northeastern Millard,
central Juab, south central Davis, southwestern Salt Lake, west
central Utah and eastern Tooele Counties through 545 PM MDT...
At 442 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 13 miles southeast of Utah Test and Training
Range North to 7 miles west of Tooele Army Depot South to 25 miles
southeast of Fish Springs Wildlife Refuge. Movement was east at 25
mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could blow around unsecured objects.
Locations impacted include...
Tooele, Grantsville, Delta, Dugway English Village, Stansbury Park,
Cedar Fort, Vernon, Ophir, Delle, Tooele Army Depot, Tooele Army
Depot South, Skull Valley, Bingham Canyon Mine, Camp Williams,
Hinckley, Stockton, Rush Valley, Fairfield, Lynndyl, and Abraham.
This includes the following highways...
Interstate 80 in Utah between mile markers 51 and 107.
US Route 6 between mile markers 87 and 108.
US Route 50 between mile markers 90 and 95.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4087 11215 4025 11207 3931 11245 3943 11332
4021 11280 4085 11314
TIME...MOT...LOC 2242Z 255DEG 21KT 4091 11302 4029 11248 3951 11318
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH
NDSpecial Weather Statement
National Weather Service Salt Lake City UT
531 PM MDT Fri Aug 9 2024
UTZ101-102-104-105-100030-
Salt Lake Valley UT-Northern Wasatch Front UT-
Tooele and Rush Valleys UT-Great Salt Lake Desert and Mountains UT-
531 PM MDT Fri Aug 9 2024
...Strong thunderstorms will impact portions of southwestern Weber,
southeastern Box Elder, Davis, northwestern Salt Lake and
northeastern Tooele Counties through 630 PM MDT...
At 530 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 10 miles northeast of Great Salt Lake South of
the Causeway to 15 miles north of Stansbury Park. Movement was east
at 20 mph.
HAZARD...Wind gusts up to 50 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Salt Lake City, Ogden, Layton, Hill Air Force Base, Roy, Clearfield,
Kaysville, Syracuse, Clinton, South Ogden, North Salt Lake, Woods
Cross, Washington Terrace, Riverdale, Hooper, South Weber, Uintah,
Salt Lake City International Airport, Weber State University, and
Great Salt Lake South of the Causeway.
This storm will be capable of producing strong gusty winds on the
Great Salt Lake. This will lead to a sudden increase in waves and
very choppy waters which will result in hazardous boating conditions.
Boaters are urged to seek safe harbor if possible.
This includes the following highways...
Interstate 15 between mile markers 327 and 343.
Interstate 84 between mile markers 82 and 86.
Interstate 80 in Utah between mile markers 106 and 117.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4123 11193 4076 11195 4076 11245 4122 11243
TIME...MOT...LOC 2330Z 252DEG 11KT 4115 11235 4086 11237
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
NDSpecial Weather Statement
National Weather Service Salt Lake City UT
623 PM MDT Fri Aug 9 2024
UTZ108-110-112-100115-
Wasatch Back UT-Western Uinta Mountains UT-Wasatch Mountains I-
80 North UT-
623 PM MDT Fri Aug 9 2024
...Strong thunderstorms will impact portions of east central Weber,
central Morgan and west central Summit Counties through 715 PM MDT
...
At 623 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 8 miles east of North Ogden to near Morgan.
Movement was east at 25 mph.
HAZARD...Wind gusts of 50 to 55 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Morgan, Henefer, Huntsville, Causey Reservoir, Portersville, Croydon,
Echo, Stoddard, Peterson, Richville, Echo Reservoir, and Pineview
Reservoir.
This includes the following highways...
Interstate 84 between mile markers 95 and 119.
Interstate 80 in Utah between mile markers 166 and 172.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
If on or near a body of water, get out of the water and move indoors
or inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.
&&
LAT...LON 4135 11135 4095 11137 4097 11180 4131 11179
TIME...MOT...LOC 0023Z 254DEG 33KT 4130 11179 4100 11177
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...55 MPH
NDPreliminary Local Storm Report
National Weather Service Salt Lake City UT
625 PM MDT Fri Aug 9 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0550 PM Tstm Wnd Gst 3 W North Salt Lake 40.83N 111.99W
08/09/2024 M61 MPH Salt Lake UT Mesonet
Mesonet station UUPT1 Uu Portable Trailer 1.
&&Preliminary Local Storm Report
National Weather Service Salt Lake City UT
701 PM MDT Fri Aug 9 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0701 PM Tstm Wnd Dmg Woods Cross 40.88N 111.91W
08/09/2024 Davis UT Public
Trees and large branches reportedly downed
from earlier storm passing through Woods
Cross.
&&
mtSpecial Weather Statement
National Weather Service Salt Lake City UT
713 PM MDT Fri Aug 9 2024
UTZ109-110-112-WYZ021-100200-
Bear Lake and Bear River Valley UT-Western Uinta Mountains UT-
Wasatch Mountains I-80 North UT-Southwest Wyoming WY-
713 PM MDT Fri Aug 9 2024
...Strong thunderstorms will impact portions of southeastern Rich,
east central Morgan, northwestern Summit and western Uinta Counties
through 800 PM MDT...
At 713 PM MDT, Doppler radar was tracking a cluster of strong
thunderstorms 7 miles west of Evanston, moving east at 30 mph.
HAZARD...Wind gusts up to 50 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Evanston, Wahsatch, Almy, Altamont, and Castle Rock.
This includes Interstate 80 in Utah between mile markers 185 and 196.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4113 11129 4146 11128 4151 11067 4106 11070
TIME...MOT...LOC 0113Z 270DEG 37KT 4126 11111
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
JACThe Salt Lake City radar (KMTX), 118 km away, was scanning. The volume nearest the first event began at 01:25 UTC.
1 thunderstorm wind. Local standard time, as filed.
A wind gust of 60 mph was recorded at the Evanston-Uinta County Airport - Burns Field ASOS.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2024Every state in 2024This day in weather historyWarnings in Wyoming, August 2024
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: 1214096.