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.!Geopotential%20500%20hPa%20and%20Temperature%20at%20850%20hPa!240!North%20America!pop!od!oper!public_plots!2011062900!!/

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