Indianapolis, IN
Weather Forecast Office
Overview
A landspout tornado formed out of a thunderstorm across Randolph County on the afternoon of August 20. A brief touchdown resulted in damage to an outbuilding.Tornadoes
Tornado - Northwest of Winchester
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The Enhanced Fujita (EF) Scale classifies tornadoes into the following categories:
EF0 Weak 65-85 mph |
EF1 Moderate 86-110 mph |
EF2 Significant 111-135 mph |
EF3 Severe 136-165 mph |
EF4 Extreme 166-200 mph |
EF5 Catastrophic 200+ mph |
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Environment
Thunderstorms developed in warm and unstable air during the afternoon of August 20. A surface trough was across northern portions of central Indiana.
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Figure 1: Mixed Layer CAPE at 3:00 PM EDT | Figure 2: Environment - Non-Supercell Tornado Parameter at 3:00 PM EDT |
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National Weather Service
Indianapolis, IN
6900 West Hanna Avenue
Indianapolis, IN 46241-9526
317-856-0664
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