Near record breaking upper low (PVA) has now crossed the Sierra into Eastern Ca and will shortly be into Nevada via the Owens Valley while the main trof still hangs back over CA. The next minor low is coming down the pike, now off-shore nearing the Or/Ca border. 

Scattered Showers will continue throughout the day today under unstable air aloft. The next system does not have the moisture that the former system had, but will bring a renewed threat of showers to the Eastern Sierra Tuesday PM.  Temperatures will be in the 40s in Mammoth today climbing into the 50s Tuesday and Wednesday then low 60s Thursday. Lows in the 20 and 30 this week.

Will this be the last big system (for June) to effect the Mammoth area?  So far yes! This may be the last significant gasp of Winter!  At the moment, the guidance shows that weak Trofing will persist into the end of the week with continued below normal temps. Normal for this time of the year is about 70 degrees here in Mammoth. Actually, some years in the past we have gotten up into the low 80s! High temps will move up into the 60s by Thursday.

Longer Range:

The American Global Forecast System is suggesting that a “hot” ridge will develop beginning the early to middle part of next week some 6 to 10 days away. The ECMWF is holding on to the weak troffing over the far west with somewhat below normal temps. (Low to mid 60s)

The Dweebs will be tracking the change in the pattern this week and and will let you know if Summer will arrive on time from a Meteorology point of view!  😉


Some comments from WSFO FAT:

FRESNO RECEIVED 1.16 INCH OF RAIN ON JUNE 5TH. ALTHOUGH THIS DID NOT BREAK THE RECORD FOR THE DATE /1.30 INCH IN 1993/…IT DID BRING THE MONTHLY TOTAL TO 1.35 INCH FOR THE 4TH WETTEST JUNE ON RECORD. THE SEASONAL TOTAL FOR FRESNO THROUGH JUNE 5TH IS 16.95 INCH FOR THE 8TH WETTEST RAINFALL SEASON ON RECORD.

Dweebs Comment: This is signifacant for Mammoth as a lot of our weather come via the Fresno and San Joaquin Valley. 


Dr Howard and the Dweebs…………………………:-)  

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Reference Glossary of Weather Terms
Disclaimer: I have been a hobbyist meteorologist for over 30 years here in the Mammoth area and I do this for my personal enjoyment. The National Weather Service saves lives every day . . . I do not. When making important planning decisions please use information provided by the National Weather Service as they are the most knowledgeable and accurate information source available today.