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Thompson Index calculator



Enter the K Index
Enter the Lifted Index
The Thompson Index is


TI    < 25      no thunderstorm.
TI    25-34    potential of thunderstorms.
TI    35-39    potential of thunderstorms approaching severe.
TI    => 40    potential of severe thunderstorm.

Use the Index to determine the severity of thunderstorms.

Tests on the field (in the States) showed there is a good correlation between severe weather events and TI >40


Formula used: TI = KI - LI



Note: Java script must be enabled