Ice coverage in Lake Michigan

March 5th, 2014 |
GOES-13 0.63 µm visible channel images (click to play animation)

GOES-13 0.63 µm visible channel images (click to play animation)

According to the 04 March 2014 Great Lakes Environmental Research Laboratory ice analysis, much of Lake Michigan had over 90% median ice concentration, with a total ice coverage of around 95%. However, AWIPS images of GOES-13 0.63 µm visible channel data on 05 March (above; click image to play animation) showed the effect of northerly winds on the ice , with large leads (cracks) opening up in the northern portion of the lake.

A comparison of AWIPS 0.64 µm visible channel and false-color Red/Green/Blue (RGB) images at 18:49 UTC (below) confirmed that most of Lake Michigan was cloud-free — snow and ice appear as varying shades of red on the RGB image, which supercooled water droplet clouds appear as shades of white.

Suomi NPP VIIRS 0.64 µm visible channel and False-color RGB images

Suomi NPP VIIRS 0.64 µm visible channel and False-color RGB images

A toggle between the 17:04 UTC Terra MODIS and 18:47 UTC Aqua MODIS true-color RGB images  from the SSEC MODIS Today site (below) showed the amount of ice motion within that 103 minute period of time.

Terra and Aqua MODIS true-color RGB images

Terra and Aqua MODIS true-color RGB images

===== 06 March Update =====

As winds changed to southerly and southwesterly in the wake of a retreating surface high pressure on 06 March, a corresponding change in Great Lakes ice motion was seen on GOES-13 0.63 µm visible channel images (below; click image to play animation).

GOES-13 0.63 µm visible channel images (click to play animation)

GOES-13 0.63 µm visible channel images (click to play animation)

15-meter resolution Landsat-8 0.59 µm panochromatic visible imagery viewed using the SSEC RealEarth web map server (below) offered a very detailed view of the Lake Superior ice in the vicinity of the Keweenaw Peninsula and Marquette  in the Upper Peninsula of Michigan.

Landsat-8 0.59 µm panochormatic visible channel image

Landsat-8 0.59 µm panochormatic visible channel image