A massive dome of high pressure, responsible for the extreme heat in Texas and neighboring States, stretches northward into the Central Plains and westward to the Front Range. Far from its center we reached 90 degrees F in Metro Denver yesterday and may be a bit warmer today.
Nevertheless, there are signs that we are on the rim of the dome and should expect relief in the near future. Last evening, clouds were drifting northeastward across the area, indicating that cooler air and lower atmospheric pressure are nearby. Clockwise winds around the outer edge of the dome determine the movement of clouds and storms that develop at its rim (where hot and cool air masses interact).
As the dome of high pressure drifts eastward, we will be in that clash zone. Indeed, we expect thunderstorms within a few days.
