Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.
By: Dr. Jeff Masters , 4:06 PM GMT on April 10, 2010
Always obey your air traffic controllers. That's the cardinal rule of of aviation, and one apparently violated by the pilot of the aircraft carrying the Polish president and dozens of the country's top political and military leaders, which crashed in heavy fog this morning near Smolensk, Russia. All 96 people aboard perished. According to the New York Times, air traffic controllers had recommended the president's jet land in nearby Minsk because of bad visibility, but the crew decided to land anyway. The Polish news channel TVN24 reported that moments before the crash, air traffic controllers had refused a Russian military aircraft permission to land, but that they could not refuse permission to the Polish plane. Russian media reported that the airplane's crew made several attempts to land before a wing hit the treetops and the plane crashed about half a mile from the runway.
Figure 1. a large patch of fog covers the Russian city of Smolensk and regions to the east in this visible light image captured by NASA's Terra satellite between 08:00 - 11:15 UTC Saturday, April 10, 2010. Image credit: NASA MODIS Rapid Response System, visualized using Google Earth.
At 10 am local time, near the time of the crash, the Smolensk airport reported heavy fog with visibility 0.5 km (3/10 of a mile). As seen in the satellite image taken near this time (Figure 1), a large bank of fog covered Smolensk and neighboring regions of Russia and Belarus.
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