October 17th, 2012: 3-7 Day Forecast

After this system comes over during the next 2 days, temperatures do begin to warm up as we experience warm air advection at the 850mb level, helping warm up the surface highs into the upper 60s.

GFS Model 850mb winds (green barbs), geopotential height (yellow contours) and temperature (red dotted lines)

Our next chance for precipitation comes in on Monday night with a small low pressure system and center maximum vorticity moving over the area. This chance of precipitation will continue throughout Wednesday, but our greatest chances for precipitation as of right now will occur on Tuesday.

GFS Model outlook at 1200UTC on Tuesday, October 23rd, 2012. Left: Variables plotted include 1000-500mb thickness (red dashed lines [decameters]), Mean Sea Level Pressure (yellow solid lines [hectopascals]), and 6 hour total precipitation (green shaded areas [centimeters]). Right: 500mb maximum vorticity and heights.

On the 7th day of this forecast, a large trough at the 300mb level begins to form along the West Coast. It will be interesting to see how this system will develop in the following weeks.

GFS Model outlook at the 300mb level at 0000 UTC on Thursday, October 25th, 2012.

Today's forecast graphics were provided by Juan A. Crespo.