The Day 1 convective outlook was upgraded from Marginal to SLIGHT over the central Plains, with large hail the primary mode, severe wind and an isolated tornado possible; Marginal runs from the southern Plains and the lower Missouri Valley into the Ohio Valley and the Southeast. No hail or wind maximum is stated in the issuance, so none is printed here. The same Ohio Valley ground under the Marginal is the ground taking the weekend's heavy rain.
THE RECORD
53 turning points on record since Jun 9 — the 8 most recent shown.
Sep 18↑ moved up the board
Sep 17▽ slipped down the board
Sep 16easing → active
Sep 15active → easing
Sep 13▽ slipped down the board
Sep 12▽ eased
Sep 11↑ firmed
Sep 8easing → active
WHO IT TOUCHES
Aviationa typhoon reaching the Tokyo area on a holiday Monday, a hail day over the central Plains, and a rain axis crossing the north-eastern hubs
Eventsa national holiday weekend under a typhoon's rain, and an American Saturday with hail in the Plains and a record-challenging heat index in the South
Agriculturea monsoon retreating over one Indian state while it soaks six others, hail over the central Plains, and a 108 °F field-work ceiling
Energyan evening load peak under a 108 °F index, wind and hail on two continents, and a river that is still a level rather than an event
CONNECTED
One country, one weekend, two hazards that both went up a notch in the same cycle.
The heavy-rain axis and the eastern half of the severe outlook are drawn over the same counties — the Ohio Valley sits under both the weekend's flash-flood focus and the Marginal tier for damaging wind and isolated hail.
THE ATMOSPHERE TODAY · EVENT← TODAY'S COVER