May 042017
 
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Next Tuesday through Thursday, a low pressure system is currently in the forecast to move across Northern Arizona. It should bring considerable water, but spread across the three day period. That should help with fire season after several weeks with high winds.

I don’t write much about the spring winds. The driving force is the passage of storms north of Arizona. We get the winds. Utah gets the rain. This storm is dropping farther to the south, so we get the rain this time. Over an inch could fall across Flagstaff and surrounding areas above the Mogollon Rim. There could be large gaps in time where no rain falls. Also, it is a cut-off low pressure system, which means there is high variability in the forecast.

60-hour total precipitation from the GFS model, ending Thursday, May 11, 2017.

60-hour total precipitation from the GFS model, ending Thursday, May 11, 2017.

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