JORDAN DRESSMAN – MORNING UPDATE
Tuesday, November 21, 2017
Good morning Southern Idaho, and a very happy Tuesday! High temperatures yesterday finished in the upper 30s across the Wood River Valley and mid to upper 40s everywhere else. I mention this because they’ll likely be the coolest temperatures of the next seven days. The sub-tropical jet continues its trip north creating extreme ridging for much of the southwest. If your travel plans take you anywhere along the northwest or southwest I anticipate it’ll be rather warm. A large area of high pressure sits over Baja California creating sunny skies for much of the southwest, but the same can’t be said here in Southern Idaho.
With the combination of the ridging and the high pressure so far south, we find ourselves under extreme southwest flow. Just like during the summer this will bring ample moisture providing a lot of cloud cover through the extended forecast. It is also providing several opportunities for showers over the next few days. Most of the shower activity will be contained to the higher elevations where the atmosphere is at its most unstable. That chance exists both today and tomorrow with only the smallest chance for late Thanksgiving.
A small system will pass by to the north on Black Friday, which does bring with it “Cooler” temperatures and the chance for a passing shower. Again, most of those shower chances are across the mountains with only limited opportunities across the valleys. Temperatures on Friday will hang out in the low and mid-50s.
I close with the extreme warmth that will result from our current weather pattern. Temperatures today will warm into the upper 50s before we discuss low and mid-60s for both Wednesday and Thursday. We will make a solid run at the record for both Wednesday and Thursday, but the forecast high falls 2-3 degrees shy each day.
TUESDAY: Chance PM Showers
HIGH: 58 (Mountains: 49)
TUESDAY NIGHT: Scattered Showers
LOW: 42 (Mountains: 36)
WEDNESDAY: Chance of Showers
HIGH: 63 (Mountains: 53)
THANKSGIVING: Mostly Cloudy
HIGH: 64 (Mountains: 54)
BLACK FRIDAY: Chance of Showers
HIGH: 55 (Mountains: 50)
HIGH: 63 (Mountains: 50)
HIGH: 63 (Mountains: 51)
MONDAY: Chance of showers and colder
HIGH: 42 (Mountains: 44)