Labor Day Update on Irma

The synoptic (large-scale) pattern remains key in how quickly a trough (dip in the jet stream) moving through the east is able to exit the United States.  Latest indications are trending for the potential of a faster exit of this trough which could potentially leave Irma behind as high pressure in the upper-levels of the atmosphere builds in (behind the departing trough) to the north of Irma.

Latest Global Ensemble Forecast System (GEFS) Spaghetti Tracks:

Latest Canadian Ensemble Prediction System (GEPS) Spaghetti Tracks (image courtesy WxBell):

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