Lightning decisions
Latest from Jason
The all-clear rule, and what a 60-minute forecast changes
Why the timer starts at the last strike, not the last rumble — and how prediction moves the first decision earlier.
Jason Deese · · 7 min read
Flash Weather · Meteorology
Jason Deese
Founder & CEO
Jason Deese is the Founder & CEO of Flash Weather. He is a 20-year National Weather Service veteran and the former Chief Meteorologist at Atlanta Hartsfield-Jackson International Airport.
He founded Flash Scientific Technology Inc. in Canton, Georgia, to put the forecast in the hands of the person who has to make the call: before the first strike, not after it.
He leads Flash Consulting Meteorology and is the reviewer of the Flash Accuracy Method, responsible for the method and every figure on that page.
Expertise
What Jason writes about
- Meteorology
- Lightning prediction
- National Weather Service forecasting
- Forecast verification
Heard and seen
- Guest, The ModGolf Podcast, 2024 PGA Show media stageThe ModGolf Podcast · 21 Feb 2024 (opens in a new tab)
- Speaker, Golf Inc. Strategies Summit 2026Golf Inc. Strategies Summit · Sep 2026 (opens in a new tab)
- Featured on public television's Viewpoint with Dennis QuaidViewpoint with Dennis Quaid · Jun 2023 (opens in a new tab)
Articles
Articles by Jason Deese
Lightning decisions
The all-clear rule, and what a 60-minute forecast changes
Why the timer starts at the last strike, not the last rumble — and how prediction moves the first decision earlier.
Published 18 Sep 2026
Heat & WBGT planning
WBGT forecast vs on-site reading: which one makes the call?
The reading decides compliance. The forecast decides whether you still have a practice to run.
Published 15 Sep 2026
Agentic weather
How Flash Agent decides when to act, and when to ask you
Permissions per connector, a log for every action, and a person confirming before any schedule or record changes.
Published 12 Sep 2026
Lightning decisions
Radius vs cell: a lightning policy trainers will follow
A wide radius, a tight radius, or the cell next door — the trade-offs in false alarms and lost minutes.
Published 26 Aug 2026
Lightning decisions
Lightning prediction vs detection: why your weather app warns you too late
The alert on your phone was for a strike that already hit the ground. Detection reports the past; prediction gives you up to 60 minutes. What that changes for the person who has to clear the field.
Published 14 Jul 2026