Friday, March 27, 2015

time is running out... (am.27.mar.15)>

Last night's band of thick high clouds has pushed off to the east, leaving us with totally clear skies this morning at sunrise.  I'm recording a low temp of 59.2F (15.1C), and there has been no rainfall overnight.  In fact, there has been only a trace of rain in the past ten days.

We're down to just two more days of this super-fine springtime weather before what looks to be an extended period of unsettled, wetter and cooler weather sets in.  Here in the short-term, our high pressure ridge which has been the main feature for the past week plus will continue to provide us with a good amount of sunshine, along with temperatures running several degrees above normal for the end of March.  Other than the threat of occasional high clouds, and perhaps some afternoon mountain cumulus development, all is well.  Both today and Saturday should feature high temps close to the 75ºF mark, which is where we've been for the last couple of days.

A whole-scale pattern shift will occur by Sunday, however.  A general trough of low pressure in the upper atmosphere will move in from the west, and then linger in the vicinity of northern India for pretty much all of next week.  Our air mass will destabilize dramatically on Sunday into Monday, increasing the risk of some periods of rain and thunderstorms, as temperatures drop at least 10ºF/5ºC.  There won't be continuous rain and clouds next week, but the way the data is looking right now, it may be hard to have a period of 24-36 hours without at least one round of showers and thunderstorms.  Just be prepared for a dramatically different kind of weather scenario starting on Sunday, and continuing perhaps all the way through Easter Sunday the following week...

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