M/V Stewart J. Cort from KDLH WSR-88D August 10, 2019
The M/V Stewart J. Cort appeared on the KDLH WSR-88D during the morning hours of August 10, 2019 between 6:20 AM CDT and 8:43 AM CDT. This is not the first time a lake boat was observed by our radar. This phenomena is caused by "super refraction" of our radar beam causing it to bend closer to the surface of the earth than otherwise expected. Super refraction is the result of the radar beam passing through a very stable airmass compared to the "standard atmosphere". It can also occur when warm moist air is advected over a cool surface, like Lake Superior.
The M/V Stewart J. Cort appeared on the KDLH WSR-88D during the morning hours of August 10, 2019 between 6:20 AM CDT and 8:43 AM CDT. This is not the first time a lake boat was observed by our radar. This phenomena is caused by "super refraction" of our radar beam causing it to bend closer to the surface of the earth than otherwise expected. Super refraction is the result of the radar beam passing through a very stable airmass compared to the "standard atmosphere". It can also occur when warm moist air is advected over a cool surface, like Lake Superior.