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Instant alerts for new and moved locations

LMKwhen Team
Product updates

Locations are now checked the moment you change them. Add a location, import a list, move a location on the map, or re-enable one during active weather, and it is matched against every active watch, warning, advisory, and outlook right away, instead of waiting for the next data cycle.

What is new​

  • Instant evaluation on change — creating, importing, moving, or re-enabling a location evaluates it against all currently-active hazard polygons immediately. If it is already inside a warned area, the alert fires right away.
  • Move out, get an all-clear — moving a location out of a warned area sends an all-clear noting it is no longer in the warned area.
  • Move back in, the alert reopens — the original alert reopens with its history preserved, rather than starting a brand-new one.
  • No flapping — a location sitting near a warning edge is capped at one movement notification every 15 minutes per alert, so quick back-and-forth movement will not flood you.

One caveat​

Forecast-threshold rules — like heat, wind, or snowfall — still evaluate on the next forecast update. Instant forecast checks are coming next.

There is nothing to turn on. Add or edit a location on the Locations page and it takes effect immediately.