Forecast May 12th & 13th

 Monday, May 12th

The low pressure system moves further inland…

North Puget Sound
  • Highs in the upper 50s to low 60s
  • Lows in the mid to upper 40s
  • Scattered showers
  • Gusts in the teens
South Puget Sound
  • Highs in the upper 50s to low 60s
  • Lows in the mid to upper 40s
  • Scattered showers
  • Tiny chance of an isolated lightning strike
  • Gusts building until reaching the mid teens in the evening
North Willamette Valley
  • Highs in the upper 50s
  • Lows in the upper 40s to low 50s
  • Heavy showers, showers may be densely packed at times
  • Chance of scattered lightning
  • Gusts in the upper single digits
South Willamette Valley
  • Highs in the upper 50s
  • Lows in the upper 40s
  • Densely packed heavy showers
  • Chance of scattered lightning 
  • Gusts in the teens

Tuesday, May 13th

Higher pressure begins to make its way back towards the area…

North Puget Sound
  • Highs in the low to mid 60s
  • Lows in the upper 40s
  • Scattered showers
  • Gusts in the upper single digits
South Puget Sound
  • Highs in the low to mid 60s
  • Lows in the mid to upper 40s
  • Scattered showers
  • Gusts in the teens
North Willamette Valley
  • Highs in the low to mid 60s
  • Lows in the mid to upper 40s
  • Scattered showers
  • Gusts in the upper single digits
South Willamette Valley
  • Highs in the low to mid 60s
  • Lows in the mid to upper 40s
  • Steady rain before 6 AM, and then showers 
  • Gusts in the teens

Comments

  1. Big BoyMay 11, 2025 at 4:06 PM

    Thanks for putting all the weather topics together.

    ReplyDelete

Post a Comment

Popular posts from this blog

Weather topic #7

Image
  Windstorms Windstorms are some of the most damaging weather scenarios we receive in the Pacific Northwest. Winds we typically receive in the Pacific Northwest are only high enough to be classified as “blustery”, but with the right conditions aloft, areas of the PNW can be hit by highly damaging wind speeds. Wind is caused by a gradient in pressure. By “gradient in pressure” I mean a change from low to high pressure over an area. The tighter the gradient, the higher the wind speeds. PNW wind is caused by a low setting up off the coastline, and then moving over the area. The favorable trajectory for high winds is when the low sets up slightly to the north, because the pressure gradient is typically denser on the south side of the low. The SE corner of the low, (where it begins to curve north), has the highest winds, and these winds are known as Bent Back Occlusion winds.  Wind can also be impacted by local terrain features. Some features can amplify the wind. One of these is t...
Read more

Forecast August 27th

Image
 Wednesday, August 27th Southeasterly flow aloft continues to bring unstable weather, particularly to the Mountains… Map is showing  CAPE  values on Wednesday  North Puget Sound Highs in the upper 70s to low 80s Lows in the upper 50s to low 60s Showers Little to no wind Central Puget Sound Highs in the upper 70s to low 80s Lows in the low to mid 60s Showers, highest shower density in the morning Little to no wind South Puget Sound Highs in the upper 70s to low 80s Lows in the low to mid 60s Showers, highest shower density in the morning Slight chance of scattered lightning in the morning Gusts in the teens North Willamette Valley Highs in the upper 80s to low 90s Lows in the mid to upper 60s Scattered showers Slight chance of scattered lightning in the morning Little to no wind South Willamette Valley Highs in the upper 80s to low 90s Lows in the low to mid 60s Isolated showers Little to no wind
Read more