Mid level height falls ahead of an approaching trough resulted in the development of scattered convection throughout the day. Given dry low levels and a well mixed boundary layer, DCAPE values were high, and numerous dry to mostly dry microbursts were observed across Utah.
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.
Mid level height falls ahead of an approaching trough resulted in the development of scattered convection throughout the day. Given dry low levels and a well mixed boundary layer, DCAPE values were high, and numerous dry to mostly dry microbursts were observed across Utah.
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 May 10, 1:04 PM MST, 12 hours 47 minutes earlier.
Area Forecast Discussion National Weather Service Salt Lake City UT 204 PM MDT Sat May 10 2025 .SYNOPSIS...Summer-like temperatures and increasingly gusty winds will continue through the weekend and into early next week. A strong cold front will gradually shift through the state Monday evening through Wednesday morning, bringing a much cooler airmass to the region. The cooler, active pattern will continue through the remainder of the week. && .DISCUSSION...High pressure remains across the region this afternoon. It is the warmest day of the year across many locations, with the Salt Lake City Airport sitting at 87F at press time. Afternoon upper air and satellite analysis indicates a trough is approaching the Pacific Northwest, with deep southwest flow shifting across the western Great Basin. Broad upper level diffluence and increased deep layer shear will support strong convection north of the Utah border, with an isolated threat of strong convection across mainly northwestern Box Elder County through this evening. If this pattern developed closer to June and fuels were critical, this is a classic severe fire weather pattern. As the trough continues to shift eastward, dry, deep southwest flow will develop across the region. Latest guidance has shifted the gusts a bit lower...to around 40 mph or so across western Utah. Given the threat of gusts greater than 45 mph for 3+ hours is less than 30%, will not be issuing a wind advisory for western Utah with this package. The associated strong cold front will approach northwestern Utah Monday afternoon. By this time, 700mb flow will increase to around 50 kts. This combined with deep mixing, will support widespread wind gusts of 50-55 mph across the western valleys (greater than 60% chance), with very dry conditions continuing. The eastern valleys will likely see gusty winds, but remaining below wind advisory criteria. Given Monday is still several days away, will not be issuing any wind advisories with this package for Monday, however if model trends continue, eventually a wind advisory will be needed. The cold front will slowly shift across the state, sitting across central Utah by Tuesday morning. Another round of gusty southerly winds 50+ mph are expected across areas south of the front (mainly southern and eastern Utah south of I-70 and east of US-6, greater than 60% chance). The cold front will finally push through the southern portions of the state Tuesday night into Wednesday morning. As the main trough approaches the region Tuesday into Wednesday, more convective threat is expected with the front and in the steep lapse rates and cold mid-level temperatures in the wake of the front. Expect somewhere between 0.10-0.50" (25th to 75th percentile) of precipitation across northern and central Utah, with a few inches of snow above 7500 feet. Temperatures will shift from being around 10-15 degrees above normal Sunday and Monday to around 10 degrees below normal across northern Utah Tuesday, southern Utah Wednesday. The cooler, more active pattern is likely to continue through the end of the week. && .AVIATION...KSLC...Gusty winds out of the south, occasionally southwest, will continue to increase into the evening hours tonight and all throughout tomorrow. Gusts tonight will generally range from 20-25kts before increasing up to 35kts following 15z tomorrow. Gusts will dwindle somewhat into Sunday evening, though they will likely remain 25kts or greater through Monday morning out of the south- southwest. There is somewhat low confidence in scattered showers and thunderstorms at the terminal tomorrow afternoon, though sufficient enough for a PROB30 to be included in future updates from around 18- 22z. REST OF UTAH AND SOUTHWEST WYOMING...Gusty winds out of the south- southwest are expected to develop this evening across all terminals and are expected to last through Monday. This evening, gusts up to 25kts will develop across our northern terminals with our southern terminals remaining somewhat calm. For our southern sites, gusts will materialize around 15z tomorrow. The strongest gusts are expected to materialize around 18z tomorrow with gusts ranging from 25-35kts across all terminals. Lastly, a chance for isolated showers and thunderstorms exists for all northern terminals following 18z tomorrow. && .FIRE WEATHER...High pressure will gradually shift out of the region today...with deep, dry southwest flow developing Sunday. Most valley locations will see RHs fall to 10-15% Sunday afternoon and evening, with wind gusts up to 40 mph across western Utah. A strong cold front associated with a Pacific trough will move into northwest Utah by Monday evening. This will help to increase winds further, especially across western Utah. Wind gusts in excess of 40 mph combined with minimum humidities below 15% are likely Monday afternoon and evening. The cold front will slowly shift into central Utah by Tuesday morning, with dry and windy conditions continuing across southern and eastern Utah into Tuesday evening. Tuesday will be much cooler behind the front...with the remainder of the region seeing significant cooling by Wednesday. A cooler, unsettled pattern will continue through the remainder of the week. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && Kruse/Worster For more information from NOAA's National Weather Service visit... http://weather.gov/saltlakecity
The Salt Lake City radar (KMTX), 77 km away, was scanning. The volume nearest the first event began at 08:48 UTC.
59 thunderstorm wind. Local standard time, as filed.
The Logan-Cache Airport ASOS (KLGU) recorded a wind gust of 59 mph as a result of outflow winds associated with a nearby cluster of decaying convective showers moving through the area.
The Snowville (South) mesonet station recorded a wind gust of 59 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The WEST OF WILDCAT MTN mesonet station recorded an initial strong wind gust of 59 mph at 10:50 am MST, followed by a subsequent peak wind gust of 63 mph at 10:55 am MST. These wind gusts were the result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The INTERSTATE 80 mesonet station recorded a wind gust of 58 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The I-80 at MP 40 Knolls mesonet station recorded a wind gust of 62 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
A semi roll over was reported on I-80 near MP 33, with the cause overwhelmingly suspected to be strong winds.
The SR-65 at Big Mountain Pass mesonet station recorded a wind gust of 63 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The VERNON HILL mesonet station recorded a wind gust of 65 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The VERNON HILL mesonet station recorded a wind gust of 65 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Lakeside Mountain mesonet station recorded a wind gust of 61 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Grantsville South mesonet station recorded a wind gust of 65 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
A social media reported picture showed a large tree downed/uprooted with associated root ball.
The UofU Compass Minerals Flux Tower mesonet station recorded an initial strong wind gust of 65 mph at 12:00 pm MST, followed by a subsequent peak wind gust of 70 mph at 12:30 pm MST. These wind gusts were the result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The MARSH mesonet station recorded a wind gust of 59 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The LAKE POINT I-80 mesonet station recorded an initial strong wind gust of 58 mph at 12:10 pm MST, followed by a subsequent peak wind gust of 62 mph at 12:20 pm MST. These wind gusts were the result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The WEST OF WILDCAT MTN mesonet station recorded an initial peak wind gust of 63 mph at 12:10 pm MST, followed by a subsequent strong wind gust of 61 mph at 12:20 pm MST. These wind gusts were the result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Hat Island mesonet station recorded a wind gust of 64 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Fremont Island - Miller Hill mesonet station recorded a wind gust of 72 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Radar mesonet station recorded a wind gust of 64 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The SR-201 at I-80 mesonet station recorded a wind gust of 61 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The I-80 @ mp 29 mesonet station recorded a wind gust of 68 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The I-15 @ Tremonton mesonet station recorded a wind gust of 59 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
Public report of intense winds blowing trees, breaking tree parts, and damaging household parts outside.
The GROOME mesonet station recorded a wind gust of 60 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Crow Mountain mesonet station recorded an initial strong wind gust of 58 mph at 12:40 pm MST, followed by a subsequent peak wind gust of 68 mph at 1:20 pm MST, and a final strong gust of 67 mph at 1:30 pm MST. These wind gusts were the result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The KF6RAL-6 Salt Lake Marina mesonet station recorded a wind gust of 64 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The I-80 at MP 71 East Delle mesonet station recorded a wind gust of 66 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The US-6 @ Eureka mesonet station recorded a wind gust of 59 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The FW8325 Garden City mesonet station recorded a wind gust of 60 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The EW2533 Bountiful Bench mesonet station recorded a wind gust of 59 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The I-80 at MP 40 Knolls mesonet station recorded a wind gust of 72 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The The Head mesonet station recorded a wind gust of 65 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
Public social media pictures showing large trees downed.
The STRNSW mesonet station recorded a wind gust of 75 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The I-80 at MP 40 Knolls mesonet station recorded an initial strong wind gust of 67 mph at 1:40 pm MST, followed by a subsequent peak wind gust of 74 mph at 1:50 pm MST. These wind gusts were the result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Kennecott Rd Lake Point mesonet station recorded a period of strong sustained winds with wind gusts generally between 58 mph and 65 mph. The peak gust reported in the period was 66 mph at 3:30 pm MST.
The Marina mesonet station recorded a wind gust of 68 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
Report of recorded wind gust of 75 mph for 20-30 seconds.
The Grantsville South mesonet station recorded a wind gust of 69 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The SR-201 at I-80 mesonet station recorded a wind gust of 70 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The I-80 at MP 40 Knolls mesonet station recorded a wind gust of 59 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The KF6RAL-6 Salt Lake Marina mesonet station recorded a wind gust of 64 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The MARSH mesonet station recorded a wind gust of 65 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Beach mesonet station recorded a wind gust of 64 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Bolinder Field-Tooele Valley Airport AWOS (KTVY) recorded a wind gust of 59 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The I-80 @ Grassey mesonet station recorded an initial strong wind gust of 67 mph at 4:10 pm MST, followed by a subsequent peak wind gust of 68 mph at 4:20 pm MST. These wind gusts were the result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Murray's Hill mesonet station recorded an initial strong wind gust of 59 mph at 4:50 pm MST, followed by a subsequent peak wind gust of 66 mph at 5:10 pm MST, and a final strong wind gust of 62 mph at 5:30 pm MST. More modest wind gusts in the 53 mph to 55 mph were recorded in between these observations. These wind gusts were the result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Hat Island mesonet station recorded a wind gust of 66 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The I-80 @ Grassey mesonet station recorded a wind gust of 65 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Radar mesonet station recorded a wind gust of 58 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The I-80 at MP 68 West Delle mesonet station recorded a wind gust of 63 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The UofU Compass Minerals Flux Tower mesonet station recorded an initial strong wind gust of 72 mph at 6:00 pm MST, followed by a subsequent peak wind gust of 73 mph at 6:30 pm MST. These wind gusts were the result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The I-80 at MP 71 East Delle mesonet station recorded a wind gust of 66 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Great Salt Lake Minerals mesonet station recorded a wind gust of 61 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The West Jordan Bench mesonet station recorded a wind gust of 60 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The SR-85 @ Dannon Way mesonet station recorded a wind gust of 65 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The South Valley Regional Airport AWOS (KSVR) recorded a wind gust of 58 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The Chaulk Hill mesonet station recorded a wind gust of 66 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
The US-89 at USU mesonet station recorded a wind gust of 64 mph as a result of outflow winds associated with a nearby cluster of showers and thunderstorms moving through the area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2025Every state in 2025This day in weather historyWarnings in Utah, May 2025
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: 1246989, 1246990, 1246993, 1246994, 1246995, 1246996, 1246998, 1246999, 1247000, 1247001, 1247002, 1247004, 1247007, 1247009, 1247010, 1247011, 1268009, 1247012, 1247013, 1247014, 1247015, 1247016, 1247032, 1247021, 1268017, 1247022, 1247023, 1247024, 1247025, 1247026, 1247030, 1268355, 1247031, 1247034, 1247035, 1247041, 1247036, 1247037, 1247003, 1247038, and more.