Friday, December 14, 2007

Cold rains for Seattle this weekend

Synopsis...2 weather systems will be affecting the Seattle area this weekend. They are labelled "1" and "2" on the weather map to the right, which shows these systems circled on a satellite image with their forecast movement. System 1 will be bringing widespread rain into the area tonight, with scattered showers lingering during the day Saturday. System 2 will affect the area on Sunday. Rainfall amounts of up to an inch expected in Seattle this weekend. Snow levels will be around 2000 feet. Forecast models are in good agreement. On the scale very low, low, moderate, high, very high, confidence for this weekend's forecasts are high for system 1 and moderate for system 2, as the timing of the rains could be slightly off for Sunday.

Tonight...Rain developing, should become widespread by midnight. Cold with temperatures in the upper 30's. Chance of rain near 100 percent.

Tomorrow...Rain early, tapering off to scattered showers, possibly heavy at times. Chance of rain 70 percent. Highs around 45.

Saturday night and Sunday...Rain developing Saturday night and possibly lasting through much of the day on Sunday. Rain will taper off to showers behind the cold front, forecast to pass Sunday afternoon at this time. Low of about 38 and high of about 45. Chance of rain 90 percent.

No comments: