20 May 2013

May 20, 2013

Looking north this morning its evident the clouds will move in.

Still looking broken to the South West.

At 2240 meters the temperature was 0, winds were light from the S. At 1550 meters the temperature wad +3, no new snow and a base of 121 cm. In the valley it was +8. Observations taken at 08:00 Hrs.

For the forecast we will see unsettled conditions with sunny breaks early this morning as the upper level ridging is pushed out of the zone.  Increased cloud cover this am with the possibility of showers by this afternoon.  A deep persistent cold low is moving down the coast from the Gulf of Alaska and will remain in this zone until the weekend. It appears the bulk of the system will slide into the interior by Wednesday, difficult to estimate precipitation amounts as our zone will be on the fringe of the system. The position and strength of the low will change through out the forecast period.  Freezing levels could drop to 1200 meters by Tuesday. Guesstimates for today trace to 2 mm, Tonight 5-10 mm with snow in the upper elevations, Tuesday 10-20 mm with snow in the upper elevations, Wednesday 1-5 mm with snow in the upper elevations.

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The cold low is moving from the Gulf of Alaska into BC where it will linger until Saturday. This AM picture.

Satellite picture from last night around 20:30 Hrs, picture below taken around the same time.

The end of the day yesterday on Alta Lake.

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