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Severe September Heat Grips South as Northern Rockies Face Flood Watches

A persistent heat dome has driven record September temperatures and widespread drought in Texas, raising wildfire and health risks alongside a slow-moving upper‑level low that is producing heavy rain and flood watches in the northern Rockies.

Overview

  • Central Texas continues to bake under the heat dome with afternoon highs near 100°F and heat‑index readings of about 105–110°F, putting daily records and public health under strain.
  • The U.S. Drought Monitor shows nearly 18 million Texans in drought and 81% of the state in moderate drought or worse, a deficit that has increased fire danger and stretched local fire responses.
  • Texas A&M Forest Service reported active responses to multiple fires this week, with local offices handling as many as nine incidents on a single day as fuels remain dry.
  • A slow‑moving upper‑level low is producing Flood Watches for southern Montana and northern Wyoming, where forecast totals of 1–4+ inches — with higher pocketed amounts near Billings — raise flash‑flood and burn‑scar debris‑flow concerns.
  • Short‑term severe‑storm threats exist this weekend for parts of the Upper Midwest and the Southeast with damaging winds, hail and isolated tornadoes expected, and forecast guidance shows a pattern shift next week that could return moisture to the Southwest and Texas and increase midweek rain chances.