BP / Gulf Oil Spill – Radar Images June 22-23

We superimposed three CSK radar satellite images (black-and-white) on a cloudy MODIS satellite image (color) taken about 1:00 pm on June 22, 2010. The long strip of CSK radar on the left was acquired at 12:08 UTC (7:08 am local time) on June 23; the two smaller images on the right were taken at 4:44 pm and 7:32 pm local time on June 22:

Three CSK radar satellite images (black-and-white) taken June 22 and 23, 2010. CSK data courtesy of CSTARS.

Areas of strong gusty wind appear as large bright patches on these radar images, especially in the east and along the Florida panhandle. Strong isolated thunderstorms, mostly on the June 23 image to the west, create circular “footprints” on the ocean surface caused by strong radial winds. Small bright patches associated with these storms are not clouds, but are high-altitude layers of hail or large water droplets in these storm cells that reflect radar energy.

Weather data buoys in the vicinity (stations 42040 and 42012) recorded wind speeds of 6-8 meters/second (13-18 miles/hr) when these images were acquired, strong enough to break up areas of thin oil sheen and possibly render them undetectable. We infer that the dark areas enclosed within the orange line are thicker patches of oil slick.