| Weather Term | Description / Definition |
| LALs | (L)ightning (A)ctivity (L)evels. LAL 1 - No thunderstorms. LAL 2 - Few building cumulus with isolated thunderstorms. LAL 3 - Much building cumulus with scattered thunderstorms. Light to moderate rain. LAL 4 - Thunderstorms common. Moderate to heavy rain reaching the ground. LAL 5 - Numerous thunderstorms. Moderate to heavy rain reaching the ground. LAL 6 - Dry lightning (same as LAL 3 but without the rain). |