THE AMERICAN INTERIOR — FLASH FLOODING WHERE THE SOIL HAS NOTHING LEFT TO TAKE

On the board · September 20, 2026 →

ACTIVE · September 20, 2026 · NO. 0920

THE WATER

The forecast today is about the ground, not the rain. Excessive rain and flash flooding across the northern and central Rockies, the Plains, the Midwest, the Ohio Valley and the Mid-Atlantic today, “especially where soils remain saturated” from previous rainfall, with slow-moving south-Florida downpours through Monday. The antecedent is the forecast: same rain, lower threshold.

THE RECORD

34 turning points on record since Jul 18 — the 8 most recent shown.

Sep 19building → active

Sep 18cresting → building

Sep 17building → cresting · intensified sharply

Sep 16↑ moved up the board

Sep 15active → building

Sep 13↑ firmed

Sep 12▽ slipped down the board

Sep 11building → active

WHO IT TOUCHES

Public safetyfive live water emergencies with five different distances between the warning and the water

Aviationa holiday Monday over the Tokyo airports, a hail day on the High Plains and a bura pulse on the Adriatic coast

Supply chainsa rail and road network under a holiday rain shield, a saturated American interior, and a river that will not refill

CONNECTED

Same physics, two continents — in both places the ground is the forecast, not the rain.