Heat Wave #3 for the Next Week
Heat Wave #3 is getting under way this weekend with hot temperatures over 100° each day. There will also be an increase in mid level moisture with more clouds drifting overhead. Humidity levels are expected to be just below moderate heat stress on Saturday, but could increase by early next week. A chance for mountain and desert thunderstorms will be present beginning Sunday and running through Thursday. However, the probabilities for measurable rainfall are only placed at 10-20%. A bigger concern is dry lightning. Overnight lows in the south valley will hold in the mid 70s for most of the next 10 days. Highs will range from about 101 to 106 degrees.
Computer models are now indicating an end to the heat wave over the following weekend. A weak trough of low pressure will develop just off the coast and upper level high pressure is expected to break down. Additionally, I'm forecasting a marine surge in about a week to help with the moderation in temperature. Stay cool and drink plenty of water if working or playing outside this weekend.
6:25 pm 7-25-14 Chief Meteorologist MILES MUZIO