Isolated thunderstorms developed near Boulder Mountain and moved slowly eastward across Capitol Reef National Park. Flash flooding resulted along Sulphur Creek with high flows also reported in Grand Wash.
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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.
Isolated thunderstorms developed near Boulder Mountain and moved slowly eastward across Capitol Reef National Park. Flash flooding resulted along Sulphur Creek with high flows also reported in Grand Wash.
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 Jul 1, 2:52 PM MST, 4 hours 8 minutes earlier.
Area Forecast Discussion National Weather Service Salt Lake City UT 352 PM MDT Mon Jul 1 2019 .SYNOPSIS...High pressure will build across the region through midweek. A weak cold front will cross into northern Utah Thursday and Friday. && .DISCUSSION...Fairly typical early July pattern has developed across Utah to start the month. An upper level low near the Washington Coast is helping to induce dry southwesterly flow across the eastern Great Basin. Afternoon visible imagery shows minimal vertical convective cloud development across the CWA outside of the central Uintas. The next real threat of precipitation will be with a relatively weak cold front as the previously mentioned upper level low gradually shifts eastward Thursday into Friday. More of the global deterministic/ensemble data points toward some low threat of precipitation with this boundary. The 12Z GFS was especially bullish. For now, compromised with a more ensemble approach to the precipitation threat near the Utah/Idaho border Thursday morning into Thursday evening. As this is the 4th of July, those planning outdoor activities north of Salt Lake City should monitor the forecast over the next few days. Temperatures are expected to cool a bit across northern Utah behind this cold front Friday...but will warm right back up for the weekend as upper level ridging builds across the Interior West. && .AVIATION...Southerly winds at SLC are expected to yield to northwest winds through late this afternoon, before a developing easterly pressure gradient will produce a short period of northeast winds this evening. Climatological southerly winds are expected to resume between 03-04Z this evening. Cumulus buildups over the Oquirrhs will dissipate this evening leaving mainly clear skies. && .FIRE WEATHER...High pressure will build into the area and remain in place through midweek. A dry and warm southwest flow will bring gusty southwest winds to southern Utah each afternoon and evening through at least Thursday. A weak cold front is expected to cross into northern Utah Thursday into Friday. This will cool temperatures down a bit...and bring a slight chance of showers. Following this system...high pressure will build into the area once again. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && Kruse/Church For more information from NOAA's National Weather Service visit... http://weather.gov/saltlakecity For frequently asked questions about the Area Forecast Discussion visit... http://weather.gov/saltlakecity/general/afd_faqs.php
The Cedar City radar (KICX), 159 km away, was scanning. The volume nearest the first event began at 01:57 UTC.
1 flash flood. Local standard time, as filed.
Sulphur Creek experienced a flash flood and Grand Wash also experienced elevated flows.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2019Every state in 2019This day in weather historyWarnings in Utah, July 2019
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: 846052.