________________

________________

Here is my weekly weather quiz question. What are the three conditions needed to form a rainbow? Please post your answer as a comment by clicking on “no comments” in the upper right hand portion of this page under the caption, then add your comment. The first person to post the correct answer will win a week of free personalized  weather forecasts tailored to your needs. The answer has to be a comment to win. An email answer will not count. Good luck.

_______________

The jet stream shows another cold trough of low pressure ( “U” shaped area) migrating Eastward across the Pacific Northwest.  A strong low offshore has sent a strong frontal system through Oregon. More frontal systems will be coming our way this week producing even more precipitation.

________________

Advisories:  NONE AT THIS TIME.

_________________

Here are your detailed forecasts. **

_________________

Forecast for the Southern and lower Mid Willamette Valley including Eugene-Springfield and Albany-Corvallis:  Mostly cloudy with showers today (0.25 in. of rain possible, and possible hail this afternoon and evening), a good (50%) chance of showers tonight with patchy fog late, patchy fog then mostly cloudy with a good (50%) chance of rain in the afternoon (0.10 in. of rain possible), rain Friday night (0.25 in. of rain possible) highs 47-53 lows 33-39. Showers likely (60%) Saturday (0.25 in. of rain possible), rain Saturday night, rain likely (60%) Sunday, a good (50%) chance of showers Sunday night, a (40%) chance of rain Monday and Monday night, then showers likely (60%) Tuesday, and rain likely (60%) Tuesday night and Wednesday highs 52-47 lows 35-34. (seasonal  averages high 54 low 36)

_______________

Forecast for the Umpqua Basin including, Roseburg:  Mostly cloudy with rain and snow showers today (snow level 2,000 ft., no snow accumulation expected),  rain and snow showers this evening, a good (50%) chance of rain and snow showers late tonight (snow level 2,000 ft. falling to 1,500 ft.),  a good (50%) chance of showers Friday (snow level 3,000 ft.), then rain Friday night highs 48-55 lows 36-39.  Mostly cloudy with AM rain Saturday rain likely (60%)  Saturday afternoon, rain Saturday night, showers likely (60%) Sunday AM, a good (50%) chance of showers  Sunday afternoon, rain and snow likely (60%)in the evening, rain and snow likely (60%) late Sunday night through Tuesday night, then mostly cloudy with a good (50%) chance of rain Wednesday highs 50-57 lows 42-34. (seasonal averages high 58 low 38)

_______________

Forecast for the South Oregon Coast including Coos Bay and North Bend: Cloudy with showers today (snow level 2,000 ft.), mostly cloudy with a good (50%) chance of showers tonight (snow level 2,000 ft.),  a (40%) chance of showers Friday, rain likely (60%) in the afternoon and breezy (wind: S 15-25 mph late AM  into afternoon), rain  Friday night highs 48-53 lows 38-45. AM rain Saturday, rain likely (60%) Saturday afternoon, rain Saturday night, showers likely (60%) Sunday, rain likely (60%) Sunday night through Tuesday night, then mostly cloudy with a good (50%) chance of rain Wednesday highs near 50 lows 40-36. (seasonal averages high 55 low 41).

_________________

Forecast for the Cascades of Lane County:  Mostly cloudy with snow showers today (2-5 in. of snow possible), and snow showers this evening and a good (50%) chance of snow showers late at night (2 in. of snow possible),  a mix of clouds and sun Friday AM, mostly cloudy with rain and snow likely (60%) in the afternoon, then rain with snow and rain Friday night (3-7 in. of snow possible) snow level 2,500 ft. today, at the surface tonight,  4,000 ft. Friday, 3,500 ft. Friday night highs 32-37 lows 24-28. Mostly cloudy with rain and snow showers Saturday, snow and rain likely (60%) Saturday night, snow showers likely (60%) Sunday, a good (50%) chance of snow showers Sunday night, snow likely (60%) Monday, snow showers likely (60%) Monday night and Tuesday, then snow and rain likely (60%) Tuesday night and Wednesday snow level 3,000 ft. Saturday, 2,500 ft. and Saturday night, at the surface Sunday, 2,500 ft. Sunday night, at the surface Monday through Tuesday, 2,500 ft. Tuesday night, and 3,000 ft. Wednesday highs near 35 lows 27-22.

_________________

**Because weather forecasting is a combination of science, intuition, and timing there can be no absolute guarantees that individual forecasts will be 100% accurate. Nature is in a constant state of flux and sudden unexpected weather events can happen.