Author Archive | Dennis Mattinson

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Dennis Mattinson, Weather 06-20-2022

The Owens Valley / Mammoth Lakes Dennis Mattinson, Weather and Atmospheric Forecaster Sierra Wave Media / KSRW-FM 92.5    Monday Jun 20 2022  A large cyclonic vortex (988 mb) off the Northern California coast moving inland, brought atypical weather for mid-June thru Saturday. So both very windy weather (14.5 mb surface pressure gradient) and cooler temperatures (some 5 […]

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University Peak, south and west of Independence in the Sierra.  Photo by Andrew Kirk

Dennis Mattinson Weather 6-17-2022

  Owens Valley / Mammoth LakesDennis Mattinson Sierra Wave Media / KSRW-FM 92.5  Fri Jun 17 2022 As we head into Friday and the upcoming weekend, the overall synoptic pattern will go into an amplification phase, with a deep -2.5 Sigma trough just off the West Coast and an anomalous +2 Sigma ridge located over the Central […]

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Dennis Mattinson Weather 06-16-2022

Owens Valley / Mammoth Lakes Dennis Mattinson / Weather and Atmospheric Forecaster Sierra Wave Media / Radio 92.5 FM  Thu Jun 16 2022    High pressure remains strong today, then it’s kicked East by an incoming, high amplitude West Coast trof Friday. So expect hot conditions in our Forecast Area today with cooler and windier conditions on Friday. How windy Friday? […]

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Oct. 29 near Cardinal Village/Photo courtesy of Barbara Richter

DMatt’s Weather 6-15-22

The Owens Valley / Mammoth Lakes Dennis Mattinson Sierra Wave Media / KSRW-FM 92.5   Wed Jun 15 2022  Strong high pressure remains dominant over our area thru Thursday with warm temperatures. However the biggest upcoming impact to our area will be on Thursday, Friday and Saturday with a strong South to Southwest flow ahead of a […]

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Dennis Mattinson Weather May 23, 2022

Our lingering low pressure will stay positioned just North of our forecast area thru today. We will have a few breezesys in favored locations. Thus those temperatures look to stay controlled, right at normal for May. Wednesday / Thursday though, a vertically stacked ridge will visit our area, pushing what’s left of that low pressure to the East. So a […]

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Windy days create lovely skyscapes.  Photo by Andrew Kirk

DMatt’s Weather

Owens Valley / Mammoth Lakes Dennis Mattinson Sierra Wave Media / KSRW-FM 92.5  Fri May 20 2022 Prefrontal winds yesterday (G 51 mph in Chalfant Valley), will lead to brisk postfrontal NE winds today, gradually diminishing overnight. All due to a large and cold mid-level trough from the Northern / Central Rockies propagating SE, then stalling out over Northern […]

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Crayons & Paint will take place at Karen’s Preserve, a scenic hillside overlooking Crowley Lake. To protect important wildlife habitat, Karen’s Preserve was permanently conserved in 2008 – and it is now open to the public. Photo © Stephen Ingram.

Dennis Mattinson’s Weather April 1, 2022

  Dry weather this weekend as a shortwave ridge builds poleward into the Western US. Temperatures will gradually warm up thru Saturday. A slight dip in those temps on Sunday into Monday, as a dry front ripples across the region. Breezy in spots Sunday, 30 – 40 mph. After that high pressure again takes control […]

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clear day sunny weather

Dennis Mattinson’s Weather For March 30, 2022

Wed Mar 30 2022    Mammoth Mountain (with its elevation and closeness to the parent low) picked up 8 inches of new Tuesday. As you know, we need all the snow we can get, as the past weekend was not kind to the Sierra snowpack. Shortwave ridging brings on dry and sunny weather, with the overall flow favoring areas […]

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Dennis Mattinson’s Weather March 29, 2022

Snow showers continue this morning for Mammoth then tapering as the day progresses, as the main trough shifts East of the region. It is certainly Spring weather now, with weak inside slider systems passing through followed by weak high pressure in their place. So high pressure builds in early Wednesday then another weak system into Thursday. This one will bring mostly clouds and […]

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DMatt’s Weather

The Owens Valley / Mammoth Lakes Dennis Mattinson Sierra Wave Media / KSRW-FM 92.5   Monday Mar 28 2022  After near or record breaking heat Friday and Saturday, the closed low we talked about Friday, is finally wobbling thru today. This gives us a chance of rain / snow showers, with Mammoth Mountain still looking like 8 […]

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Photo courtesy of Alex Fitch

DMatt’s Weather

Owens Valley / Mammoth Lakes Dennis Mattinson Sierra Wave Media / KSRW-FM 92.5  Fri Mar 25 2022 We have a major West Coast Ridge anomaly overhead, for the month of March. H5 heights look like 582 – 584dm going into today and Saturday. Today is shaping up to be a record high temperature day in the Owens […]

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