2 Days Away from Heat Wave #3
Today should be the last day of the month we are blessed with an on shore flow. The cooler coastal air will ebb inland as the exiting low just west of Washington moves into Canada. We will tap into the tail end of its trough to keep highs today just at or below seasonal highs; mid 90s for the south valley and mid 80s for the mountains.
Thursday into the weeekend and next week easterly winds take over. High pressure over the four corner states expands. The off shore wind will help bring the hot desert air into the region. Plus, the monsoonal flow connected with it will also arrive. Sunday into Tuesday the monsoonal push will be strongest as moisture arrives from the Baja. A 20% chance of thunderstorms are forecast for the mountain and desert areas during that period. The temperatures start to peak at 100° as early as Thursday... if not Friday. Triple digit heat will range from 100-108° Friday into Wednesday of next week. This will likely become Heat Wave #3 for the 2014 summer season. Find shaded areas, keep yourself cool by drinking water and if you do plan to swim please put on sunscreen, while parents... watch those kids around water.
BTW... our current number of triple digit days holds at 18, thus far. Normal by this date is 17 days.
6:47 am 7-23-14 Morning Forecaster Aaron Perlman