Extreme heat is waning over the Pacific Northwest. Dry, gusty winds, and isolated dry thunderstorms will bring critical fire weather to the Pacific Northwest and Intermountain West. Heavy rain and thunderstorms continue across portions of the Great Basin, Rockies, and central/southern Plains into the Ozarks. An atmospheric river will bring heavy rain and strong winds to southwest Alaska. 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. |