All warmth waves aren’t alike.
Some are hotter than others, some are quick (someday), others final so long as 5-days, some have temperatures rise and fall rapidly, whereas others have a gradual rise and fast fall–or vice versa. This one will not be a record-breaker, however will prolong over 4 days.
We are actually within the warmest time of the yr (see beneath), so a visitation from a warmth wave is just not surprising (see SeaTac temps beneath, the arrow is at this time, common max is pink, document highs are yellow).
The upcoming heat interval will probably be fairly run-of-the-mill on the west aspect of the Cascades, however extra notable east of the Cascade crest.
Right here is the most recent predictions from the NOAA/NWS Nationwide Mix of Fashions (NBM), which mixes fashions, observations and statistics. NBM has finished effectively with previous warmth waves!
In Seattle (beneath), excessive temperatures will rise into the higher 80s on Monday and the low 90s on Tuesday and Wednesday, slowly falling into the higher 80s on Thursday and Friday. And 80+ temperatures proceed for one more a number of days.
An extended heat interval, so make loads ice cubes and clear the blades of your window followers.
However the lows will drop into low to mid-60s every night time, so cooling will probably be doable.
.png)
However japanese Washington will probably be a distinct story….and a scorching one. Highs will climb to 110 or 111F on Wednesday by means of Friday, with lows dropping solely to round 70F.
That will probably be disagreeable.
The nice and cozy climate will probably be related to the constructing of a ridge of excessive strain aloft over the japanese Pacific. The amplitude of this excessive strain (or ridge) will probably be a most on Monday night
500 hPa heights on Monday night. Crimson is far above regular
The ridge weakens a bit and strikes eastward on Thursday. This slowly altering ridge is why the warmth continues so lengthy.
Thursday afternoon
The colours are anomalies for regular in normal deviations.
There are some people which are involved about wildfires. The warmth in itself won’t begin fires, though it would contribute to drying of floor fuels. However japanese Washington grasses are already dry sufficient to burn.
What is required is ignition and wind. Ignitions we will management (apart from lightning). However what about wind?
The large risk is on the finish of the warmth wave late within the week, as cooler air strikes into western Washington leading to greater strain there and a higher strain distinction throughout the Cascades.
The recent-dry-windy index that mixes a measure of drying situations and winds exhibits excessive values (yellow and pink colours) east of the Cascade crest on Friday afternoon (see beneath).
We higher watch out!
