An impressive mid-level trough advanced across the central Great Plains on 13 April 2018 bringing a variety of weather to the region. Some of the weather hazards included blizzard conditions, blowing dust, extreme fire weather conditions, and severe thunderstorms, including an SPC Moderate Risk for severe in Arkansas. GOES-16 1-min mesoscale sectors were available to forecasters in the area during this event.
The 5-min animation in Figure 1 combines multiple GOES-16 channels into one to capture the myriad of hazards. The gray scale underlay is the 10.3 – 12.3 um split window difference (SWD). The negative difference values, or brown colors, represent lofted dust across parts of Mexico, southern New Mexico, and west Texas. The color areas overlaying the SWD is cold values of the 10.3 um IR channel. Apparent are clouds associated with snow across Colorado and northward, and severe thunderstorms to the east. Finally, the small yellow areas are hot 3.9 um pixels, capturing the wildfires across western Oklahoma.
Bill Line, NWS