Today morning many of you woke up with a dusting of snow. The official Portland snowfall total is 0.5 inches.
Now will it Snow again?
Some showers today will produce snow
The best chance for sticking snow once again will be tomorrow starting around 7pm.
On Tuesday the forecast is difficult, the GFS model suggests we warm up quickly, the euro model suggests that we warm up slowly in the afternoon, But the NAM model says that the 850mb temp will be around -7 to -8c (borderline for snow) all day. All of the models say there will be moisture available on Tuesday,
Now on Wednesday the chance of snow will depend on the placement of the low, too far north and we get rain.
The image below shows the GFS placing the low (red) to the north of Astoria, however for us to get snow the low must be in the blue zone.
End of the week:
all models are hinting at a very deep low coming in some time Thursday-Saturday. Now what does a deep low do? A deep low gives us a big pressure gradient witch gives us strong wind.
the image below is the 18z GFS on Friday
The pressure gradient from Eugene to Olympia is about 14mb witch would give us wind gusts of 45-50 mph
My forecast:
Timberline Forecast:
Tonight: Snow showers. Low around 9. Wind chill values as low as -10. West northwest wind around 18 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
M.L.King Day: Snow showers. High near 14. Wind chill values as low as -10. Windy, with a west wind 21 to 24 mph increasing to between 29 and 32 mph. Winds could gust as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Monday Night: Snow showers. Low around 12. Wind chill values as low as -10. Windy, with a west wind between 28 and 33 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.
Tuesday: Snow showers. High near 20. Windy, with a west wind between 28 and 30 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New snow accumulation of 10 to 14 inches possible.
Tuesday Night: Snow. Low around 14. Windy. Chance of precipitation is 100%. New snow accumulation of 11 to 17 inches possible.
Wednesday: Snow. The snow could be heavy at times. High near 30. Windy. Chance of precipitation is 100%. New snow accumulation of 15 to 21 inches possible.
M.L.King Day: Snow showers. High near 14. Wind chill values as low as -10. Windy, with a west wind 21 to 24 mph increasing to between 29 and 32 mph. Winds could gust as high as 45 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Monday Night: Snow showers. Low around 12. Wind chill values as low as -10. Windy, with a west wind between 28 and 33 mph, with gusts as high as 47 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.
Tuesday: Snow showers. High near 20. Windy, with a west wind between 28 and 30 mph, with gusts as high as 41 mph. Chance of precipitation is 100%. New snow accumulation of 10 to 14 inches possible.
Tuesday Night: Snow. Low around 14. Windy. Chance of precipitation is 100%. New snow accumulation of 11 to 17 inches possible.
Wednesday: Snow. The snow could be heavy at times. High near 30. Windy. Chance of precipitation is 100%. New snow accumulation of 15 to 21 inches possible.
Thanks for reading
-Michael
No comments:
Post a Comment