S. Highway 89.
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.
A storm system moving across Utah produced locally heavy rain over the Bald Mountain Fire and Pole Creek Fire burn scars, which resulted in a debris flow across U.S. Highway 89. At approximately the same time, a thunderstorm moved out of Nevada and across the Wendover Airport, where it produced a severe wind gust of 58 mph.
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 31, 9:28 AM MST, 5 hours 12 minutes earlier.
Area Forecast Discussion National Weather Service Salt Lake City UT 1028 AM MDT Wed Jul 31 2019 .SYNOPSIS... Monsoon moisture across Utah will fuel showers and thunderstorms today and Thursday. A somewhat drier air mass will develop during the upcoming weekend. && .DISCUSSION...The upper ridge currently centered over the southern Rockies will continue to pump deep layer moisture across the forecast area through early Thursday. PWAT values exceeding 1.00" will cover much of the area by this afternoon, This moisture will fuel showers and thunderstorms, with the potential for heavy rainfall late this afternoon through this evening. Early convection remains concentrated along the theta-e ridge along the southwest Utah/Nevada border region. This activity will shift slowly east during the day as the axis moves into south- central through east-central Utah. Up north the deep layer southerly flow will buckle this afternoon with a mid-level trough forming from west-central Utah into extreme southeast Idaho by late in the afternoon. Dynamic support for lift with this developing trough along with increasing mid-level cold advection late this afternoon/early this evening suggests that convection capable of producing heavy rain will exist along the trough axis through the evening hours. Heading into Thursday PWAT values will lower a bit, but still remain at or above 1.00" across much of the state. Anticipating somewhat less cloud cover early Thursday with significantly better surface heating early on and a potentially more unstable air mass during the afternoon. Model guidance indicates that a weak shortwave will move through during the late morning and afternoon with supporting mid-level cold advection. This dynamic and thermal support for lift should generate organized convection capable of brief heavy rain through Thursday afternoon. Somewhat drier air will work into the forecast area by the weekend. Convection that develops will likely be primarily terrain-based and diurnally driven through the weekend. && .AVIATION...Southerly winds at the SLC terminal will prevail through the TAF period, with brief gusts over 20 kts through 18Z and then more consistent gusts over 26 kts after 18-19Z this afternoon into this evening. Showers will develop after about 21Z hours with a 40 percent chance of a thunderstorm impacting the terminal 22-02Z. && .SLC WATCHES/WARNINGS/ADVISORIES... UT...None. WY...None. && PUBLIC...CONGER AVIATION...STRUTHWOLF 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
Hazardous Weather Outlook National Weather Service Salt Lake City UT 309 AM MDT Wed Jul 31 2019 UTZ001>016-019>021-517-518-WYZ021-010915- 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- 309 AM MDT Wed Jul 31 2019 This Hazardous Weather Outlook is for the western two thirds of Utah and southwest Wyoming. .DAY ONE...Today and Tonight Locally heavy rainfall may produce flash flooding Wednesday and Thursday, especially in prone areas like burn scars, slot canyons, and normally dry washes, as monsoonal moisture makes its return. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Locally heavy rainfall may produce flash flooding Wednesday and Thursday, especially in prone areas like burn scars, slot canyons, and normally dry washes, as monsoonal moisture makes its return. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. For more information from NOAA/s National Weather Service visit... http://weather.gov/saltlakecity For information on potential road travel impacts visit... http://www.udottraffic.utah.gov/roadweatherforecast.aspx
The Salt Lake City radar (KMTX), 160 km away, was scanning. The volume nearest the first event began at 21:37 UTC.
1 flash flood, 1 thunderstorm wind. Local standard time, as filed.
Heavy rain over the Bald Mountain Fire and Pole Creek Fire burn scars, produced a debris flow that closed northbound U.S. Highway 89 near Birdseye.
A peak wind gust of 58 mph was recorded at the Wendover Airport.
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: 846600, 846601.