Previsão do tempo, weather forecast: CIMSS Satellite Blog

Several snowfall records have already been broken for the Duluth area. The table in the image shows a list of these records. Stay tuned as the Monthly snowfall total and daily snowfall for today (5/9) are likely to change. #mnwx #mnclimate pic.twitter.com/nYbGyV6kZt

— NWS Duluth (@NWSduluth) May 9, 2019

GOES-16 “Red” Visible (0.64 µm) images, with plots of surface weather type (yellow) and GLM Groups (red) [click to play animation | MP4]

GOES-16 (GOES-East) “Red” Visible (0.64 µm) images (above) and Mid-level Water Vapor (6.9 µm) images (below) showed the cloudiness and precipitation associated with a midlatitude cyclone that moved across the Upper Midwest on 08 May – 09 May 2019. The system produced accumulating snowfall from extreme eastern South Dakota to northeastern Minnesota, northwestern Wisconsin and Upper Michigan — accumulations were as high as 10.6 inches at Duluth, Minnesota, 9.9 inches at Poplar, Wisconsin, 5.0 inches at Atlantic Mine, Michigan and 3.0 inches at Astoria, South Dakota (NOHRSC snowfall/snowdepth).

GOES-16 Mid-level Water Vapor (6.9 µm) images, with plots of surface weather type (yellow) and GLM Groups (red) [click to play animation | MP4]

Although lightning was not widespread, there were small isolated clusters of GOES-16 GLM Groups detected over northeastern, central and southwestern Minnesota between 2256 and 0036 UTC (below), indicating the presence of thundersnow.

GOES-16 “Red” Visible (0.64 µm) images, with plots of surface weather type (yellow) and GLM Groups (red) [click to enlarge]

GOES-16 Mid-level Water Vapor (6.9 µm) images, with plots of surface weather type (yellow) and GLM Groups (red) [click to enlarge]

Through occasional breaks in the clouds later in the day on 09 May, GOES-16 Day Cloud Phase Red-Green-Blue (RGB) images (below) revealed the stationary signature of fresh snow cover (darker green) across central to northeastern Minnesota and far northwestern Wisconsin.

GOES-16 Day Cloud Phase Distinction RGB images [click to play animation | MP4]

===== 10 May Update =====

GOES-16 “Red” Visible (0.64 µm) images [click to play animation | MP4]

GOES-16 Visible images (above) showed two swaths of snow cover remaining across northeastern Minnesota and northwestern Wisconsin on the morning of 10 May.

Comparisons of GOES-16 Land Surface Temperature (LST) and Visible images at 1401 UTC and 1501 UTC (below) indicated that LST values were as much as 10ºF colder within the areas of snow cover (brighter shades of cyan) compared to adjacent bare ground.