Despite what it feels like, it is not hot enough to fry an egg on the sidewalk. (We looked it up, and according to the American Egg Board, you need it to be 144 degrees for an egg to be considered cooked.)

But by Seattle standards, it is hot enough to turn your iced mocha into a steaming hot mocha in 10 minutes flat...

A very strong thermal trough is entrenched, providing a very warm and dry easterly flow into the area. Not only does it clear the skies to a brilliant shade of blue, but it also warms up as the air sinks down the western slopes of the Cascades.

Temperatures around the Puget Sound area were well into the 80s Thursday, with some spots touching 90. Seattle broke the record high of 87 with an 89 degree reading and it was a record that had stood for a loooooong time -- since 1947. Olympia and Shelton also hit 89, while Renton hit 90.

And believe it or not, Friday could be even hotter.

During thermal trough situations, the warmest day in the Seattle area is usually the day it's overhead, and that's what we're thinking for Friday. If so, we're looking at highs into the upper 80s and low 90s again (We're going 89 for Seattle just because 90 is such a big number, but 89 might be conservative. In fact, I'm going on my own limb and putting 90 on the home page.)

Spots away from Puget Sound on the Eastside and Cascade foothills could get into the low 90s and perhaps even mid 90s. Seattle's record high of 86 for May 27 should be broken by early afternoon, and really, the odds of breaking the all-time record high for May (93), while low, aren't out of the question.

As a result, the National Weather Service has issued a HEAT ADVISORY for the main Seattle-Everett-Tacoma area between noon and 6 p.m. Friday, which basically means it's hot enough to get heat illnesses if you exert yourself too much. More information on the current advisory here, and general information on the advisory here.

Oh, and by the way, it'll be sunny.

If you're looking for tips to stay cool, here's a good Web site we found. I'll add in one of my own -- I keep a spray bottle full of water around and just spray myself a few times every so often. The air is dry enough here that the water evaporates and cools you off (do not try this in the humid Southeast.)

That, and keep an iced mocha nearby...