The Subtleties Of Warmth
For many inwards western Washington as well as Oregon, today was the warmest solar daytime of the yesteryear vii months... this was truthful at Sea-Tac Airport, where temperatures rose to 77F this afternoon (see plot of temperatures since xxx September...today was the warmest).
The plot of high temperatures today (Tuesday) shows some interesting contrasts: mid-50s nigh the water. 70s over province unopen to Puget Sound, as well as 80s nigh the coast as well as inwards the warm Willamette Valley.
Why then warm along the coast? Because at that topographic point was rigid easterly period of time aloft. This is shown yesteryear a plot of winds over fourth dimension to a higher house Sea-Tac Airport (red are temperatures, bluish are air current barbs, fourth dimension is inwards UTC/GMT alongside 24/18 indicating xi AM this morning, the y-axis is peak inwards describe per unit of measurement area alongside 850 beingness almost 5000 ft) Strong easterly period of time developed inwards the lower atmosphere final nighttime as well as this morning.
Easterly period of time pushes the cool marine influence offshore as well as produces downslope warming on the due west side of terrain (like the Cascades as well as coastal mountains). The coast enjoys the downslope warming benefits of two mountain barriers as well as thence gets really warm.
Another interesting oddity is the minimum temperatures this morning. 72F nigh Black Diamond inwards the eastern foothills of the Cascades as well as 60s nearby. Why then warm? Because of downslope warming off of nearby terrain!
Tomorrow volition live on warm, merely non equally warm equally today. Why? Because the easterly period of time has weakened as well as stay weaker on Wednesday. The body of body of water degree describe per unit of measurement area forecast for 2 PM tomorrow shows a thermal trough of depression describe per unit of measurement area extending into southwest Washington as well as less east-west describe per unit of measurement area departure than today. Such a designing tends to plow over us to a greater extent than northerly than easterly period of time over the Sound...thus, a cooler pattern.
Th at the same time, the trough has pushed northward to Bellingham as well as the period of time is to a greater extent than easterly over the Cascades--thus I aspect warmer conditions (upper 70s that afternoon unopen to Seattle). But the terminate of warmth volition live on upon us soon. With the approach of a depression offshore, a ridge of high describe per unit of measurement area builds along the coast as well as a rigid coastal describe per unit of measurement area slope is building.
The number volition live on an onshore force of marine air belatedly Thursday/early Friday, alongside considerable cooling on Friday.
So savour the adjacent 2 days....precipitation as well as cooler temperatures are inwards store for the weekend.
Why then warm along the coast? Because at that topographic point was rigid easterly period of time aloft. This is shown yesteryear a plot of winds over fourth dimension to a higher house Sea-Tac Airport (red are temperatures, bluish are air current barbs, fourth dimension is inwards UTC/GMT alongside 24/18 indicating xi AM this morning, the y-axis is peak inwards describe per unit of measurement area alongside 850 beingness almost 5000 ft) Strong easterly period of time developed inwards the lower atmosphere final nighttime as well as this morning.
Another interesting oddity is the minimum temperatures this morning. 72F nigh Black Diamond inwards the eastern foothills of the Cascades as well as 60s nearby. Why then warm? Because of downslope warming off of nearby terrain!
Tomorrow volition live on warm, merely non equally warm equally today. Why? Because the easterly period of time has weakened as well as stay weaker on Wednesday. The body of body of water degree describe per unit of measurement area forecast for 2 PM tomorrow shows a thermal trough of depression describe per unit of measurement area extending into southwest Washington as well as less east-west describe per unit of measurement area departure than today. Such a designing tends to plow over us to a greater extent than northerly than easterly period of time over the Sound...thus, a cooler pattern.
The number volition live on an onshore force of marine air belatedly Thursday/early Friday, alongside considerable cooling on Friday.
So savour the adjacent 2 days....precipitation as well as cooler temperatures are inwards store for the weekend.
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Announcement: The Northwest Weather Workshop is on Apr 27-28
Announcement: The Northwest Weather Workshop is on Apr 27-28
LAST DAY TO REGISTER
The NW Weather Workshop is the big annual coming together for those interested inwards Northwest meteorology. This twelvemonth nosotros volition receive got a major session on the meteorology of NW wildfires as well as others on other aspects of our regional weather. The gathering takes house at the NOAA facility inwards Seattle. To persuasion the agenda as well as to register, teach to the meeting website. The workshop is opened upward to everyone, merely registration is required.
The NW Weather Workshop is the big annual coming together for those interested inwards Northwest meteorology. This twelvemonth nosotros volition receive got a major session on the meteorology of NW wildfires as well as others on other aspects of our regional weather. The gathering takes house at the NOAA facility inwards Seattle. To persuasion the agenda as well as to register, teach to the meeting website. The workshop is opened upward to everyone, merely registration is required.
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