As record temperatures melt the record winter snowpack, Utah rivers and streams will be “running high, fast, cold, and extremely dangerous” for the next few days, according to the National Weather Service.
On Sunday, the high temperature in Salt Lake City hit 87 — a new record for that date and 21 degrees above normal for April 30. (The previous record was 84, set in 2021.) And there’s a chance of another record on Monday. (The current record is 87, set in 2007.)
Not only that, but highs in the low 80s are in the forecast for both Tuesday and Wednesday.
Temperatures running 15-20 degrees above normal “will lead to accelerated snowmelt of low and mid-elevation basins,” according to the weather service, creating “a high chance of localized flooding throughout the upcoming week.”
Among the flooding concerns:
• A flood warning is in effect for Emigration Creek through Thursday morning. The creek exceeded the flood stage on Sunday night, reaching 144 cubic feet per second; flood stage is 130 cfs.
The creek dropped back below 130 on Monday morning, according to the weather service, but is expected to peak near or above flood stage through Wednesday night, leading to “minor flooding” — including in Sugarhouse Park, which is designed as a retention pond.
• Minor flooding is also expected near the south fork of the Ogden River near Huntsville, according to the National Weather Service.
• Three rivers remain under flood watch until further notice — the Little Bear near Paradise; the lower Weber near Plain City and east Canyon Creek from near Jeremy Ranch to the East Canyon Reservoir.
• Flooding has closed bout 30 miles of U.S. 89 through Spanish Fork Canyon, from the intersection with U.S. 6 near Thistle to Mount Pleasant. The Utah Department of Transportation has no estimate for when it will reopen.
• SR 210 through Little Cottonwood Canyon remains closed. UDOT has no estimate for when it will reopen.
• SR 190 through Big Cottonwood Canyon is scheduled to be closed from 9 a.m.-5 p.m. Monday for avalanche mitigation.
from The Salt Lake Tribune https://ift.tt/OgiayDu
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