Thunderstorms in the Cascades and another hot day in Seattle

Wednesday morning clouds, warm temps in the afternoon

Starting on Wednesday, clouds will be around to start as a mid-level system moves in from the south.

Seattle - Wednesday will bring more clouds and a chance for mountain thunderstorms as a disturbance moves through Washington.

Clouds moved in overnight, keeping temperatures warm around the Seattle metro area Wednesday morning. Highs will be back into the mid 60s for most of the central and south Puget Sound areas.

A map showing the high temperatures forecast for Wednesday in Western Washington

Morning clouds and afternoon sunshine will be the pattern Wednesday with warm high temperatures in Western Washington. (FOX 13 Seattle)

Instability will increase over the mountains Wednesday afternoon and early evening. Thunderstorms are likely to develop with the potential for dry lightning. These kinds of thunderstorms are especially dangerous this time of year with how dry fuels are.

A map showing the locations where a Red Flag Warning has been issued in Washington State.

A Red Flag Warning signaling extreme wildfire danger has been issued for a large part of Washington State. (FOX 13 Seattle)

Central and Eastern Washington will remain very hot Wednesday and Thursday with several heat alerts in effect.

A map showing areas where heat alerts are issued Wednesday.

A Heat Advisory and an Excessive Heat Warning issued Wednesday for areas in Central and Eastern Washington. (FOX 13 Seattle)

Increasing onshore flow will bring more clouds Thursday morning, but sunshine should prevail in the afternoon.

Tuesday marked Seattle's 13th consecutive day with a high of 80 degrees or warmer. We should have no problem breaking the all-time consecutive 80 degree record of 15 days set in 1977 and 2015. This long stretch of 80 degree weather