Sentinel-1A overflew the Hawai’ian Islands near sunset on 4 May, as shown above (Sentinel-1A SAR Imagery is available online here and here). The toggle above compares the derived winds with GOES-18 Visible imagery (Band 2, 0.64 µm); the visible data enhancement has been changed (that is, brightened) from the default range... Read More

1-minute Mesoscale Domain Sector GOES-16 (GOES-East) Dust RGB images (above) showed areas of blowing dust (shades of magenta/pink) that reduced visibility to near zero along Interstate 55 south of Springfield, Illinois (station identifier KSPI) on 01 May 2023 — which caused multiple-vehicle accidents that resulted in dozens of injuries and several fatalities. As a result,... Read More

The RCM-1 satellite carrying SAR instruments overflew Lakes Superior and Erie/Ontario at 2350 30 April 2023 and 1135 UTC 1 May 2023, respectively. What kind of wind structures were observed, and how easily can one explain them? The imagery above shows a GOES-16 Visible animation from 2301 UTC on 30 April... Read More

Sentinel-1A overflew Samoan waters just around sunset on 25 April in American Samoa (as it does every 12 days at this time). At the overpass time, strong convection was moving slowly northward just to the east of the Sentinal SAR wind swath. The SAR Winds (shown below) show a wind... Read More