The ridge of high pressure currently over Northcentral Washington will begin to slowly shift east today but not before we see another beautiful weather day with sunshine and highs in the upper 50’s. By tonight, a deep area of low pressure will move into the Eastern Pacific increasing our cloudiness throughout the late afternoon and into tonight. The weather front will move into the region early Tuesday morning and slowly move through the forecast area through Wednesday morning. A strong Southerly flow will tap into pretty deep Pacific moisture and will result in all locations in our forecast area receiving about 18-24 hours of light to moderate precipitation.
We have a 50% chance of rain on Tuesday and a 90% chance on Tuesday night with just some scattered showers left over on Wednesday morning. Temperatures will cool off 5-10 degrees on Wednesday and Thursday, which brings them back to seasonal averages. Our normal high temperature for March 12th is 52 degrees.
The large weather trough and upper level low will push south down the west coast and into California by Wednesday afternoon. By Thursday and right through the upcoming weekend, a weak area of high pressure will move into the Pacific Northwest bringing back dry, sunny and warmer weather with high temperatures in the mid-50’s.