Breezy Weather to Continue through Thursday…..Cold Core upper Low to descend into the Sierra Friday with some light snowfall a good possibility….Amounts of a dusting to a couple of inches likely….
Tuesday May 22, 2012
Posted at 9:33 am by Howard
Friday Storm Update:
500mb Temps are projected to be -25 to -27C over central Valley
700mb Temps are expected to be as cool as -7.5C over Mammoth Friday afternoon
that -18.5F at 10,000 feet at 00Z Saturday. It will be a cool day Friday in town….upper 30s for a high?
20s on Mammoth Mtn. Again a few of inches of snow is certainly possible between Friday morning and
Saturday Noon. Rapidly moderating temps are expected between Saturday pm and Monday….
TSRW threat is being down played at this time for the central valley at this time…
Tuesday through Thursday:
Periods of gusty winds…a cooling trend begins Wednesday. Highs today 70, 68 on Wednesday then 62 Thursday and low 40s on Friday. There is a 70% chance of Snow/Showers Friday. A few inches is certainly possible.
A strong short wave approaching the pacific northwest Thursday will really spin up late Thursday night into Friday. By Friday Morning at 5:00am (12z Friday) a 543DM center is expected to form about 50 miles inland from Eureka, Ca while 500mb heights are about 552dm through Mammoth Lakes, while the upper center tracks SE down the Central Valley of Ca….then inland over NV Friday night. The cold core comes right down the coast and as a small 540dm thickness pool is evident near the Bay Area about noon. This should make for some interesting weather over the Central Valley Friday Pm depending upon timing….especially since it is late May. Cold Core Funnels? or ??? Will check server indices over the coming days….
Looking at this morning new WRF model run….the cold core is tracking a bit further west then yesterday’s run. So better for some light snowfall in the high country Friday. Temps will really chill down Friday with highs forecasted in the low 40s Friday and 20s Friday night. (protect those plants!!)
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.