Known Issue 379

In a very specific set of circumstances, the Verisk Severe Thunderstorm Model for the United States will calculate loss incorrectly.

Issue ID	379
Summary	In a very specific set of circumstances, the Verisk Severe Thunderstorm Model for the United States will calculate loss incorrectly.
Description	The Verisk Severe Thunderstorm Model for the United States is calculating loss incorrectly when all of the following criteria are met (1) Severe Thunderstorm is run with other perils, (2) The location terms being analyzed are formatted in a columnwise manner by peril code and the peril codes for severe thunderstorm are not the first to be listed, (3) The location has no secondary risk characteristics associated with it, either known or unknown. When all of those three criteria are met, the location in question will not produce the correct loss. Differences in loss can vary depending on the location.
Resolved in	Touchstone 10.0.15
Date posted	1/17/2024
Software versions affected	10.0
Feature set	Detailed loss
Models	Verisk Severe Thunderstorm Model for the United States
Potential for loss numbers impact
Workaround	There are two workarounds that can be leveraged for this known issue: (1) Perform a Detailed Loss Analysis with only Severe Thunderstorm perils (2) Export and re-import the exposure prior to running a Detailed Loss Analysis. Note, there may be small changes in geocoding when doing this that can effect loss.