Sounding plotted on skew-T diagram

Question

What is the SWEAT index for this sounding?
Enter your answer in the text box below, then click Done.

SWEAT =

The correct answer is 464.
SWEAT= 12(850Td)
     + 20(TT-49) + 2(V850) + (V500) + 125(sin(dd500-dd850) + 0.2)
     =12(13) + 20(51-49) + 2(40) + (65) + 125(sin(240-190) + 0.2)
     =464.2

Note that the SWEAT index value also appears in the parameters listing to the right of the plotted sounding on the interactive skew-T.

What is the potential for severe convection?
a. Low
b. Moderate
c. High
Correct. The SWEAT index value of 464 indicates a high likelihood of severe weather with possible tornadoes.
Incorrect. Recall that a SWEAT index greater than 300 indicates a possibility of severe convection, while a value greater than 400 indicates a high likelihood of severe convection with possible tornadoes.
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