Through mid next week expect:
- Ample blue sky,
- Rebounding daytime temps with light winds,
- Very cold mornings, strong inversions in the valleys,
- Enjoy the high elevations being mindful of the evolving thaw/freeze snowpack conditions
Arctic air remains in the wake of the recent storm system and the strong cold front of this past Tuesday. The origin of the current airmass stems from the north pole. Figure 1 highlights the southwesterly journey taken by the air via the tropopause pressure field (left panel) and the 200 mb meridional (north-south) wind field (right panel). Note the black-line arrow along the pressure gradient trail (north to south) from the pole into the Sierra and points southward (left panel). Along the same trajectory, the corresponding north-to-south wind maxima is illustrated by the cool colors (blue-purple, right panel).
The new topcoat of snow should be light and powdery for the next day or so, before some decent melting begins to take shape. By the weekend, daytime melting and nighttime refreezing will be in full force with the snowpack consistency changing along with it, so plan your outdoor excursions accordingly.
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