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Mountain West Discussion


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SLC had 2.47" of rain on Saturday, easily breaking the daily record of 0.74" (1882). Some flooding problems were reported in the Salt Lake City and Tooele regions. 

official report ... their 2.43" value is only to 8 p.m. ... seems to be the new October record as it is second all-time 24h rainfall and record 2.64" set May 3, 1901. 

RECORD EVENT REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
823 PM MDT SAT OCT 04 2025

...RECORD DAILY MAXIMUM RAINFALL SET AT SALT LAKE CITY UT...


AS OF 800 PM MDT A RECORD RAINFALL OF 2.43 INCHES WAS SET AT SALT 
LAKE CITY UT. THIS BREAKS THE OLD RECORD OF 0.74 INCHES SET IN 1882.

THE DAILY TOTAL OF 2.43 IS THE SECOND HIGHEST DAILY PRECIPITATION ON 
RECORD FOR SALT LAKE CITY UT (2.64 SET ON MAY 3 1901). 

THE TWO DAY TOTAL OF 2.57 INCHES IS THE FIFTH HIGHEST 2 DAY TOTAL ON 
RECORD FOR SALT LAKE CITY UT (3.55 INCHES SET ON MAY 3-4TH 1901).
 

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The highest rainfall in the region was 3.74" at Stansbury Park which is near the southern end of Great Salt Lake about halfway from downtown SLC to Tooele. At the Nevada border, 100 miles west, rainfalls were only about 0.05" -- also much less rain fell in northern portions of the Wasatch Front around Tremonton (0.4") ... so this rainfall event was centered over the SLC to Lehi portion of the region between Great Salt Lake and Lake Utah. News reports show snowfall pictures at ski resorts above 7,000 feet. 

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7 hours ago, Roger Smith said:

The highest rainfall in the region was 3.74" at Stansbury Park which is near the southern end of Great Salt Lake about halfway from downtown SLC to Tooele. At the Nevada border, 100 miles west, rainfalls were only about 0.05" -- also much less rain fell in northern portions of the Wasatch Front around Tremonton (0.4") ... so this rainfall event was centered over the SLC to Lehi portion of the region between Great Salt Lake and Lake Utah. News reports show snowfall pictures at ski resorts above 7,000 feet. 

That's about what our snow level was during this event.  Here in the Hebgen Basin we're at about 6,600 feet and we finished with a trace to an inch depending on the area etc. This was our first snowfall since the June 22 event a little over three months ago.  

Currently 28 and dropping.  Should hit the lower teens by Tuesday morning.

image.thumb.png.cd1b808e1822046de412e313

(This is the Madison River in YNP)

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On 10/7/2025 at 11:50 AM, tacoman25 said:

30dPNormHPRCC-CO.thumb.png.53660e6256c7cdc58e3d187bd4693f50.png

Not to split hairs too much, but given COCORAHS and climate reports I'd move the purple and blue boundaries 10 miles or so northwest. Centennial Airport, the nearest climate site around 5 miles SE of the Denver line in Arapahoe County and about 3 miles SE of me, got 1.58" (122% of normal) in September and is at 0.11" so far in October.

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Looks like Phoenix’ Sky Harbor airport picked up 1.7” overnight and this morning. El Paso got over an inch last night. Salt Lake City also recently had one of their wettest days on record, and Las Vegas got 0.90” in thunderstorms a few days ago. So most of the major metro areas in the desert SW and Great Basin are lucking out lately on rainfall - with the exception of Tucson, which is still way below normal for the year to date.

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First snow on local peaks overnight, snow line is 6,000' and a chilly 45 F at 2 p.m. here at 3500' elevation, stratus deck at around 10,000' just above the peaks of the local Monashee Range. Snow stayed a little higher than mountain pass elevations but we could see the clear snow line on the local peaks, just some drizzly light rain falling in some places now as a shallow layer of arctic air seeps in from the northeast. Peak fall colors now at 2,000' to 5,000' elevations. 

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3 hours ago, Roger Smith said:

First snow on local peaks overnight, snow line is 6,000' and a chilly 45 F at 2 p.m. here at 3500' elevation, stratus deck at around 10,000' just above the peaks of the local Monashee Range. Snow stayed a little higher than mountain pass elevations but we could see the clear snow line on the local peaks, just some drizzly light rain falling in some places now as a shallow layer of arctic air seeps in from the northeast. Peak fall colors now at 2,000' to 5,000' elevations. 

Just in time for Thanksgiving Day. Have a great Thanksgiving Day, tomorrow.

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14 minutes ago, donsutherland1 said:

Just in time for Thanksgiving Day. Have a great Thanksgiving Day, tomorrow.

Thanks Don, because our Thanksgiving always falls on a Monday and people travel to visit family/friends, almost everyone in Canada has their big meal on Sunday (today) as we are now about to do ... some wait for the Monday but I would guess three quarters or more of Canadians celebrate today. The big meal is probably very similar to American traditions, but we don't have any huge sales like Black Friday. If people are visiting they usually travel home on the Monday and it's back to work Tuesday so it's a three-day instead of four-day holiday here. If people have summer cottages they usually close those down for the winter either this weekend or the next. I don't know which country had Thanksgiving first, but I think it stems from harvest festival Sundays in some Christian denominations, plus the feast of Tabernacles in Jewish observance that has some similar features. 

People probably realize this but Columbus Day is not observed in Canada, some might know when it takes place, but Canadian weather enthusiasts refer to the Columbus Day storm as post-tropical Freda. 

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