Isolated Non-Severe Thunderstorms Expected Today
Surface high pressure over the Mid-Atlantic will shift northeast into the western Atlantic today, allowing southerly winds to bring modest moisture into the central and southern Plains. Despite the increasing humidity, warm temperatures aloft and limited atmospheric lift will keep most areas dry. Isolated, non-severe thunderstorms are possible this afternoon and evening across central and southern Arizona, south Florida, and a small portion of southeastern Louisiana. In Arizona, strong daytime heating and dry air near the surface may produce brief downbursts, while storms in Florida and Louisiana are expected to remain weak and short-lived. Overall, the majority of the eastern and central United States will experience dry, warm conditions with only isolated thunderstorm activity in the locations mentioned.

Critical Fire Weather Threats Across Parts of Wyoming and the West
Broad upper-level ridging will dominate the western and central United States today, creating dry and windy conditions across portions of the Interior West. In southeastern Wyoming, relative humidity may drop below 15 percent with sustained westerly winds exceeding 20 miles per hour, producing a critical fire weather threat. Elevated fire concerns extend across the High Plains and central Rockies, where dry fuels combined with 15+ mile-per-hour winds may allow fires to spread rapidly. Farther southwest, isolated dry thunderstorms are possible in southern Arizona, with lightning posing a risk to dry vegetation. In the central Appalachians, low humidity and moderate southerly winds may also support elevated wildfire potential, making outdoor fire caution essential.