Yesterday brought another day of heavy monsoon convection to northern Utah. The National Weather Service 24-hour precipitation analysis for the period ending at 1200 UTC 4 August (6 AM MDT Friday) shows totals in northern Utah reaching over 5 inches in the area north of Brigham City.
An observing site near Honeyville near that maximum reported a 48-hour total of 5.83". There is some concern about the veracity of that sensor, so this will need to be verified, but other stations in that area reported over three inches.
Meanwhile a bit further south, convection moved across the southern Salt Lake Valley and northern Utah County yesterday evening. The storms produced a remarkable amount of lightning.
Well played Mother Nature. Well played. pic.twitter.com/vyogDD4U2j
— Jim Steenburgh (@ProfessorPowder) August 4, 2023
The analysis above indicates maximum accumulations of between 1.5 and 2 inches, although there is one pixel that may be above 2. A closeup of radar estimated precipitation in the Corner Canyon area shows estimates over 1.8 inches in an hour.
Draper Mayor Troy Walker declared a state of emergency due to flooding and damaged roads. The storm intensity was similar to the one that hit the Sugarhouse in July 2017 and put down about 2.28" in 60 minutes (see Another Look at the Deluge...although this was a different deluge!). It was a monsoon storm producing heavy precipitation in a highly localized area overwhelming the human-built system. Hopefully the damage is limited.
This was such a lovely storm. Thank you for the video.
ReplyDeleteUnrelated, but you did tweet (or X whatever the correct lingo is) about the east winds this morning. NWS issued statement for Utah County "Conditions have developed this morning to promote enhanced easterly canyon winds. Easterly wind gusts in the 25-35 mph range with locally higher gusts can be expected near canyons, with locally higher gusts" which applied well to the morning in Sugar House. Any insight on why "conditions develdoped."
ReplyDeleteThe 5.60" in 6 hrs (5.83" total) at the Honeyville South station would be a new state record if correct. I did reach out to Western Weather Group and they said they calibrated that station in May so it likely accurate. I have friends/owners on a private ski lake in Honeyville where the water went up 3' feet.
ReplyDelete