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Lemon technique. The Lemon technique is a method used by meteorologists using weather radar to determine the relative strength of thunderstorm cells in a vertically sheared environment. It is named for Leslie R. Lemon, the co-creator of the current conceptual model of a supercell. [1] The Lemon technique is largely a continuation of work by ...
Severe thunderstorm warning (SVR) – A severe thunderstorm is indicated by Doppler weather radar or sighted by Skywarn spotters or other persons, such as local law enforcement. A severe thunderstorm contains large damaging hail of 1 inch (2.5 cm) in diameter or larger, and/or damaging winds of 58 mph (93 km/h) or greater.
A hurricane local statement (HLS) [1] is a weather statement produced for the public by the local Weather Forecast Offices of the National Weather Service in the U.S. for areas affected or forecast to be affected by a tropical storm or hurricane that provides an overview of the storm's local effects, including expected weather conditions ...
Generally, a warning covers a smaller geographic area and comes when the threat is more “imminent,” McClatchy News reported. For example, the weather service puts out a tornado watch “when ...
CHICAGO — Weather sirens in city and suburban communities across the Chicago area blared Wednesday evening as strong thunderstorms triggered tornado warnings in Cook and DuPage counties. At ...
College of DuPage is a public community college with its main campus in Glen Ellyn, Illinois. [3] The college also owns and operates satellite campuses in Addison, Carol Stream, Naperville and Westmont. [4] [5] With more than 20,000 students, the College of DuPage is the second largest provider of undergraduate education in Illinois, after ...
The Climatology and Synoptic Meteorology of Southern Plains' Tornado Outbreaks (1979) Alan Roger Moller (February 1, 1950 – June 19, 2014) was an American meteorologist, storm chaser, nature and landscape photographer known for advancing spotter training and bridging operational meteorology (particularly severe storms forecasting) with research.
Storm spotting – The observation of severe weather by individuals trained in weather and reporting. Spotters can be stationary or mobile. Storm Data (SD) – A National Climatic Data Center (NCDC) publication beginning in 1959 detailing quality controlled tornado and other severe weather summaries as the official NOAA record of such events.