Tornadoes in December?

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Slide 45 of 89

Radar/EHI

18Z

EHI=(CAPE x SRH)/160,000

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Speaker Notes:

One parameter that can aid forecasters with identifying environments that are favorable for tornadoes is the Energy Helicity Index (EHI). The EHI is a function of CAPE and storm-relative helicity. Values greater than 1 are favorable for tornadoes.

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