AgWeatherNet Weekly Weather Outlook for November 11 to November 17, 2017

Seasonal This Weekend; Stormy and Mild Next Week

Nic Loyd, Meteorologist, 509-786-9357

Unsettled and rather seasonal conditions are likely this weekend across the state. On Saturday, there will be a chance of mainly western rain, although widespread or heavy amounts are not expected. Rain should develop in the west on Sunday, while parts of the east near the Idaho border are anticipated to escape with another rather dry day. However, that western rain looks to be the start of a stormy period that should persist for much of next week. Widespread western rainfall is forecast to occur for most of the Monday to Friday time interval, with periodic rain chances in the east as well. Southerly or southwesterly winds can be expected at times as a result of low pressure systems periodically passing by to our north, and also due to the close proximity of an active jet stream. Temperatures may be relatively mild, especially at night, due to the clouds and wind. Overall, an active November weather pattern is on the way for next week.

Here are the main weather concerns for next week:

  • Significant western and mountain rainfall
  • Possible flooding and mudslides
  • Heavy high elevation snowfall
  • Strong winds

Temperatures
  • Generally above normal due to relatively mild nights and a nearly continuous infusion of maritime air masses into the state.

Precipitation
  • A chance of rain in the west on Saturday, and rain developing on Sunday.
  • Rain at times in the west next week, with a chance of periodic rain east of the Cascades.
  • Rain or snow, heavy at times, in the mountains next week.

Wind
  • Breezy to windy at times next week, and especially early in the week.

8 to 14 Day Outlook - November 18, 2017 to November 24, 2017
  • Overall, above average temperatures and near to above average precipitation are expected during the 8 to 14 day time frame.

Frost Risk Summary
  • This Weekend: Moderate risk on Saturday morning, and low to moderate risk on Sunday morning.
  • Next Week: Low to moderate risk.

Long Range Discussion / Seasonal (Winter) Outlook

The Climate Prediction Center has declared the emergence of weak La Niña conditions. While such a development does not guarantee that these conditions will persist throughout the winter, it is still a noteworthy event, since La Niña is one factor (of many) that can influence Washington’s cold season climate.

Important Points about Next Week’s Weather

South Central Washington
  • Normal conditions for this time of the year would be highs in the upper 40s to mid 50s and lows in the upper 20s to 30s.
Weekend
  • Mostly dry on Saturday. A chance of rain on Sunday.
  • Highs in the mid 40s to low 50s on Saturday, and upper 40s to mid 50s on Sunday.
  • Lows in the upper 20s to mid 30s on Saturday morning, and 30s to around 40 on Sunday morning.
Next Week
  • A chance of rain at times.
  • Highs in the mid 50s to low 60s early, and possibly cooler later in the week.
  • Lows in the mid 30s to mid 40s early, and possibly cooler later in the week.

North Central Washington
  • Normal conditions for this time of the year would be highs in the 40s and lows in the upper 20s to mid 30s.
Weekend
  • Mostly dry on Saturday. A chance of rain on Sunday.
  • Highs in the upper 30s to mid 40s on Saturday, and mid to upper 40s on Sunday.
  • Lows in the upper 20s to mid 30s on Saturday morning, and 30s on Sunday morning.
Next Week
  • Rain likely at times.
  • Highs in the upper 40s to mid 50s early, and possibly cooler later in the week.
  • Lows in the mid 30s to around 40 early, and possibly cooler later in the week.

Eastern Washington
  • Normal conditions for this time of the year would be highs in the 40s to low 50s and lows in the low to mid 30s.
Weekend
  • Mostly dry. A slight chance of rain later on Sunday.
  • Highs in the mid 40s to low 50s on Saturday, and upper 40s to mid 50s on Sunday.
  • Lows in the low to mid 30s on Saturday morning, and mid to upper 30s on Sunday morning.
Next Week
  • Rain at times.
  • Highs in the mid 40s to 50s early, and possibly cooler later in the week.
  • Lows in the 30s to mid 40s early, and possibly cooler later in the week.

Western Washington
  • Normal conditions for this time of the year would be highs in the low to mid 50s and lows in the mid 30s to low 40s.
Weekend
  • A chance of rain on Saturday.
  • Rain developing on Sunday.
  • Highs in the 50s.
  • Lows in the upper 30s to mid 40s on Saturday morning, and mid to upper 40s on Sunday morning.
Next Week
  • Rain at times, with significant totals possible.
  • Highs in the low to mid 50s early, and possibly cooler later in the week.
  • Lows in the 40s early, and possibly cooler later in the week.

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