Risk Definitions

Briefing for February 11th - 12th Winter Storm

Widespread snowfall will impact the area Tuesday afternoon through Wednesday morning. Click here for the latest weather forecast briefing on this event. Read More >

Lightning Risk Definitions
Low Risk	Thunderstorms are only expected to be isolated or widely scattered in coverage (20 Percent Chance). Atmospheric conditions do not support frequent cloud-to-ground lightning strikes.
Moderate Risk	Thunderstorms are forecast to be scattered in coverage (30-50 Percent Chance). Atmospheric conditions support frequent cloud-to-ground lightning strikes.
High Risk	Thunderstorms are forecast to be numerous or widespread in coverage (60-100 Percent Chance). Atmospheric conditions support continuous and intense cloud-to-ground lightning strikes.

Waterspout Risk Definitions
None	No threat of waterspouts
Low Risk	Showers or thunderstorms are possible, but conditions are not particularly favorable for waterspout development.
Moderate Risk	Showers or thunderstorms are possible, and conditions could support the development of waterspouts. Mariners and beach-goers should keep an eye on the weather.
High Risk	Showers or thunderstorms are possible, and conditions are supportive of waterspout development. Mariners and beach-goers should keep a close eye on the weather. Listen for possible statements or warnings.