After a fantastic couple of days of skiing, a bit of a pattern change is in store for this week. In particular, over the next couple of days, cyclogenesis will occur over the eastern Pacific, leading to a surge of subtropical moisture into California and the Sierra Nevada late Tuesday and Wednesday. As this occurs, we will see the large-scale flow over Utah shift to southwesterly with a strong connection into the subtropics. Note the surge of high precipitable water air into California late in the loop below.
 |
0600 UTC 28 Feb initialized GFS sea level pressure
(black contours), preciptable water (color fill) and 250-mb
(jet level) wind vectors (red). |
The Sierra in in store for a round of storminess for sure, although snow levels may rise to as high as 6000 feet near Lake Tahoe during the storm.
Due to the large-scale southwesterly flow, this will be a good case to examine the transformation (drying and warming) of the airmass across the Sierra Nevada and the evolution of the "leftovers" over the Intermountain West.
No comments:
Post a Comment