Wednesday, June 29, 2011

7 to 10 day Northwest Weather and July 4

Current numerical forecast models are indicating that the weather through July 4, 2011 is below normal rainfall and average temperatures. Some of the extended forecast models out to July 9 indicate a trough of low pressure that returns close to July 9 so cooler conditions and chance of some showers will return.
The map below indicates a trough of low pressure off the coast on July 9. Map below is 500 mb chart for the 18,000 to 19,000 foot level.
http://www.ecmwf.int/products/forecasts/d/charts/medium/deterministic/msl_uv850_z500!Geopotential%20500%20hPa%20and%20Temperature%20at%20850%20hPa!240!North%20America!pop!od!oper!public_plots!2011062900!!/

No comments: