On Tuesday, record highs are possible in several southwestern cities, including Las Vegas. Even coastal areas like Santa Barbara will see highs well into the 90s. Downtown Los Angeles will approach the century point.
As the high pressure ridge aloft wiggles to the west and north, the heat will expand into the Northwest. Excessive Heat Warnings have been already issued for Wednesday and Thursday in parts of Idaho, Washington, and Oregon.
Record highs are already in the forecast for Thursday as the heat bubbles northward. Highs will be well into the 90s and triple digits.
For WeatherNation: Meteorologist Mace Michaels