![]() This in turn decreases the horizontal temperature contrast and thus effectively weakens the front. Oftentimes, the lack of any appreciable cloud cover and/or precipitation results in sufficient modification of the air mass behind the front. ![]() Cold fronts are not too common during this time of year, due to the lack of strong temperature contrasts that drive these features. CDT were already quite mild with readings in the upper 70s ahead of the southward moving cold front. For a larger image of the surface map, click here or on the image itself. The figure (to the left and in the link) are courtesy of the National Oceanic and Atmospheric Administration (NOAA) Library. The national surface map on the morning of August 2, 1985, at 7:00 A.M CDT revealed that a cold front extended from the east coast back into the southern plains. In addition, a brief look at some of the new forecast methodologies and technology that was developed is discussed. The focus of this webpage will be to detail meteorological conditions that resulted in the development of showers and thunderstorms near the DFW International Airport that likely resulted in the loss of Delta Air lines Flight 191. Of particular interest is the official FAA/NTSB Report on the incident. Numerous reports, documentaries and reports have been completed following the events on August 2, 1985. This is NOT an exhaustive list and there are likely other events not listed! Weather Related Commercial Airline Incidents in the U.S.Įvents here are compiled from FAA and NTSB reports. These needs included the improved the detection of hazardous weather to aircraft using remote sensing instruments, equipping pilots and aircraft with tools to identify weather hazards to aircraft and continued collaboration between the National Weather Service (NWS) and Federal Aviation Administration (FAA). The events on August 2, 1985, as well as other dates (see table below) likely helped to drive the need to reform aviation weather safety. The Delta Air Lines Flight 191 accident marked the 3rd event between 19 in which more than 100 fatalities occurred in an aircraft incident due to a microburst in the United States. The table below lists several aircraft incidents in which weather played a major role or was the direct cause for the loss of life and/or the loss of the airplane. For information on an intense, but slightly larger downburst, see macroburst. Today we know this intense, localized downburst as a microburst, a weather phenomenon that was not well understood at the time of the accident. The National Transportation Safety Board's (NTSB) Accident Board determined that the cause of the incident was wind-shear associated with an intense thunderstorm downdraft that occurred at the north end of the airport along runway 17 Left (17L). The Delta Air Lines Flight 191 airplane crash at Dallas/Fort Worth International Airport (DFW) occurred around 6:05 P.M.
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