Temperatures will heat up in the Tri-Cities, but only briefly, according to the National Weather Service.
A red flag fire warning will continue through today because of a slight chance of thunderstorms. But the biggest threat of thunderstorms, with possible small hail, gusty wind and lightning, was Monday night before 11 p.m., according to the weather service.
Tuesday the high should be in the upper 90s, increasing to about 102 degrees Wednesday under sunny skies. Highs should cool to the upper 80s Friday, Saturday and Sunday, with a slight chance of showers and thundershowers Thursday through Friday.
The weather service’s thunderstorm warning covers much of Eastern Washington, from Ellensburg all the way through Southentral and Southeast Washington, as well as most of Central and Eastern Oregon.
Coming in three waves, the stormy weather is the result of a low-pressure system moving through the area and will bring scattered thunderstorms in the afternoons and evenings continuing through Tuesday night, the weather service predicts.
The storms won’t bring much moisture. There was only a 20 percent to 25 percent chance of rain Monday, with forecasters predicting the greatest chance for moderate to heavy rain to be Monday evening. Some storms could drop more than a quarter of an inch of rain, but others will bring less than a tenth of an inch.
The reporting station in Spokane also put out a fire weather watch Sunday, citing the quick-moving storms, lightning and strong, gusty winds as “critical” fire weather conditions.