AgWeatherNet Weekly Weather Outlook for August 19 to August 25, 2017

Pleasant on Saturday; Becoming Warmer in the East Early Next Week

Nic Loyd, Meteorologist, 509-786-9357

Monday Eclipse Viewing Forecast: Cautiously optimistic overall.
Clouds: Generally a minor issue (except potentially at the coast).
Smoke: Possibly an issue, especially near and downwind of active wildfires. (Although smoke should not be as dense or widespread across the region as it was last week, it is likely to be a local issue for some areas.)
Wildcard: High fire danger continues. Any major new fires between now and Monday morning could decrease visibility for some locations.
Summary: Good viewing for most of the Northwest, but the view may be hazy or smoke filtered for some areas.

Saturday looks to be warm and somewhat breezy, but nonetheless pleasant, as a modest westerly flow takes the edge off of the heat. However, a warming trend is expected for Sunday and into early next week, as dry conditions allow for a high fire danger to persist. As mentioned above, the Monday morning eclipse viewing weather should be mainly favorable in terms of visibility and sky cover, although smoke is likely to be an issue, or at least a nuisance, for a few areas. By Wednesday, the hottest sites in central Washington may be nearing 100 degrees, even as western areas are slowly becoming cooler.

The pattern will begin to change during the middle of next week, as a disturbance coming in from the Pacific Ocean should at least clip the northern part of the state on Thursday. The result will likely be briefly cooler and windier conditions, although it may be a dry frontal passage with blowing dust east of the Cascades. Unfortunately, the respite may be short-lived, as a potentially strong and persistent ridge of high pressure could develop over the Northwest starting next weekend. Early indications are that a substantial heat wave is possible beginning at that time. It is still too far in the future for a confident forecast, but the early signs are ominous. Luckily, the summer solstice was nearly two months ago, and the (still intense) potential solar radiation is decreasing each day.


Temperatures
  • Becoming warmer early next week, especially in the east.
  • Possibly cooler later in the period.

Precipitation
  • Mostly dry overall.
  • A slight chance of western showers later in the period.

Wind
  • Breezy on Saturday, and again later in the period.

8 to 14 Day Outlook - August 26, 2017 to September 1, 2017
  • Overall, above average temperatures and below average precipitation are expected during the 8 to 14 day time frame.

Important Points about Next Week's Weather

South Central Washington
  • Normal conditions for this time of the year would be highs in the mid 80s to low 90s and lows in the 50s.
Weekend
  • Mostly dry.
  • Highs in the mid 80s to low 90s.
  • Lows in the mid 50s to low 60s on Saturday morning, and 50s to low 60s on Sunday morning.
Next Week
  • Mostly dry.
  • Highs in the upper 80s to mid 90s on Monday, and then warmer, and possibly cooler later in the week.
  • Lows in the mid 50s to low 60s on Monday morning, and then warmer, and possibly cooler later in the week.

North Central Washington
  • Normal conditions for this time of the year would be highs in the mid to upper 80s and lows in the mid to upper 50s.
Weekend
  • Mostly dry.
  • Highs in the mid to upper 80s on Saturday, and mid 80s to around 90 on Sunday.
  • Lows in the mid 50s to mid 60s on Saturday morning, and mid 50s to low 60s on Sunday morning.
Next Week
  • Mostly dry.
  • Highs in the mid 80s to mid 90s on Monday, and then warmer, and possibly cooler later in the week.
  • Lows in the upper 50s to mid 60s on Monday morning, and then warmer, and possibly cooler later in the week.

Eastern Washington
  • Normal conditions for this time of the year would be highs in the 80s and lows in the low to mid 50s.
Weekend
  • Mostly dry.
  • Highs in the upper 70s to 80s.
  • Lows in the 50s to around 60 on Saturday morning, and upper 40s to mid 50s on Sunday morning.
Next Week
  • Mostly dry.
  • Highs in the mid 80s to low 90s on Monday, and then warmer, and possibly cooler later in the week.
  • Lows in the upper 40s to 50s on Monday morning, and then warmer, and possibly cooler later in the week.

Western Washington
  • Normal conditions for this time of the year would be highs in the 70s and lows in the upper 40s to mid 50s.
Weekend
  • Mostly dry.
  • Highs in the upper 60s to 70s on Saturday, and 70s to low 80s on Sunday.
  • Lows in the 50s on Saturday morning, and upper 40s to 50s on Sunday morning.
Next Week
  • Mostly dry early. A slight chance of showers later in the week, mainly in the north.
  • Highs in the upper 70s to 80s on Monday (except cooler at the coast), and then warmer for the interior, and cooler later in the week.
  • Lows in the 50s to around 60 on Monday morning, and then warmer, and cooler later in the week.


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