The historic California, Southwest U.S., and Texas heatwave of mid-July will expand across the U.S. to close the month. The risk of >100F shifts across much of the Great Plains to the Mid-south States in the 6-10-day period. In the 11-15-day period, the risk of >100F shifts eastward through the southern Ohio Valley, Tennessee Valley, and into the Mid-Atlantic States.

After a relatively dry and cool spring in the Northeast U.S. Corridor, the weather pattern has changed dramatically. During July so far, the Northeast U.S. has shifted 1-3C warmer than normal while flooding rainfall events have emerged. The rainfall events are producing historical flooding in Vermont and widening toward central and southern New England today.