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iNWS over-alerting issue fixed

MD
Matt Davis, modified 3 Years ago.

iNWS over-alerting issue fixed

Youngling Posts: 195 Join Date: 6/14/11 Recent Posts
Hi Everyone,

iNWS has been fixed as of 1500 UTC this morning, to prevent the alerting of county-based alert areas when a warning polygon extends into an unwarned county. There is no more 3% rule either (that was causing small polygons not to be alerted).

The new algorithm first finds every potential alert area overlapped by the warning polygon. Next, it looks at those which are county-based, and removes the ones in which the alert area's UGC code is not in the UGC codes of the product. Note that this only applies for county-based warnings and county-based alert areas, nothing else is affected. 

Thanks,
Matt

--
Acting Chief, Weather Information and Applications Division, MDL 
Project Manager for IDSS and Dissemination Systems
Office of Science and Technology Integration
Boulder, Colorado
(608) 406-0537