Warmer Days ahead as high pressure builds strongly into California, highs in Mammoth mid to upper 70s by mid week…..upper ridge shifts east Wednesday as heat related thunderstorms develop here and there…it will be a bit cooler into the following weekend..

Looks like the idea of winter weather going more directly into a Summer is becoming more of a reality in the weather charts.  Periods of strong heights rises show up in several periods weeks one and two. It looks to be a mix of sunshine… some periods of afternoon thunder as periodic weak trofs come through the mean ridge position. Temperatures will be mostly in the 70s with 30 and 40s at night….Can’t rule out a few 80s.

Some long range charts show that around the Summer Solstice, some under cutting of the westerlies may affect our areas weather.   This is long way off at this time but worth mentioning as some times around the Solstice we get some precipitation in June.

The Dweebs are off on vacation……Caio



Showers and thunder will begin to diminish Monday as high pressure builds over the region….Temperatures will climb well above normal by midweek….. Breezy weather with cooler temps to return by Friday

As the upper low moves out of Southern California, expect diminishing chances of showers and thunder Monday through Tuesday with Wednesday’s weather the nicest since late last summer….. highs will be in the low 70s.    Winds will come up as early as Thursday and may continue at least moderate into Friday, as a vigerious trof traverses through the pacific NW. There is a big difference in how the models Handel the Friday trof. The euro is much stronger, deeper and cooler than the American models. So this will have to be worked out next week.

The EPO does go negative again late next week and so that may favor the euros stronger solution. The word is…. get all the warmth you can Tuesday and Wednesday as the weather may turn unsettled again by Thursday/Friday. There will be improvement in the weather later Saturday into the following Monday, a full week away.

Dr Howard and the Dweebs…….:-)

Current Long wave Trof over the west reloads one last time with showers increasing again…..Block over NW Territories breaks down by Sunday and weather returns more seasonal like next week…..

Our West Coast Trough is forecasted to deepen again as more energy is diverted anomalously south over the far west. This will lead to an increase in moisture, dynamics and showers and thunderstorms. The process begins Wednesday with mainly afternoon and evening showers increasing each day through Friday.  The Weekend looks unsettled as well with a drying trend beginning Sunday into the middle of next week.

There is actually an upper low that spins up through Friday AM and remains in the “sweet spot”, Friday through Saturday with upper divergence over the Central Sierra. By Sunday the Upper Low gradually weakens over Southern CA as high pressure builds over our state Monday through Wednesday next week. This upper high will bring the warmest temperatures of the year to the Eastern Sierra. Low to mid 70s are possible by Tuesday or Wednesday with low 90s in Bishop. Creeks and Streams will be running high next week, as the run-off resumes….


Long Range: (The Telle’s)

With the EPO going positive this weekend; well get a real taste of late spring weather the following week.  However, teleconnections favor the EPO going negative again by the following weekend. Note;  (High pressure blocking over AK is negative EPO and low pressure over AK is +EPO; Blocking over EPO region, often forces the jet to the south over the far west.

Thus toughing is likely to develop again over the far west by the following weekend. So far, the Trof (-height anomaly) according to the ensembles, does not deepen as far south or is as cold as far south, as the current pattern. Its negative height anomaly remains further north over the Pacific NW as compared as the current Trof with its negative height anomaly over Southern CA and the Desert Southwest.  This means that most likely it will be a milder system at this latitude. It will bring drier air into our region and offer mainly high clouds, wind and temps more in the 60s, rather than the 30s, 40s, and 50s of late.

Are we done with snowfall here in Mammoth?   The climo shows the last frost about Fathers Day.  That is usually preceded by some light snowfall.  Remember…Climate is what you expect and weather is what you get!  🙂


Dr Howard the Dweebs………………………:-)