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Summers are warm and humid with a July average of 75.5 °F (24.2 °C). Winters are cold, snowy and windy with temperatures below freezing. Spring and fall are mild with moderate humidity. According to the National Weather Service, Chicago's highest official temperature reading of 107 °F (42 °C) was recorded on June 1, 1934. The lowest ...
The highest temperature ever recorded in the Chicago city limits is an unofficial 109 °F (43 °C) on July 24, 1934, at Midway Airport. The official reading of 105 °F (41 °C) for that day was taken at the University of Chicago campus near the shoreline off Lake Michigan.
Schematic of the Birkeland or Field-Aligned Currents and the ionospheric current systems they connect to, Pedersen and Hall currents. [1]A Birkeland current (also known as field-aligned current, FAC) is a set of electrical currents that flow along geomagnetic field lines connecting the Earth's magnetosphere to the Earth's high latitude ionosphere.
The magnetopause, the area where the pressures balance, is the boundary of the magnetosphere. Despite its name, the magnetosphere is asymmetric, with the sunward side being about 10 Earth radii out but with the other side stretching out in a magnetotail that extends beyond 200 Earth radii. [28]
In the height region between about 85 and 200 km altitude on Earth, the ionospheric plasma is electrically conducting. Atmospheric tidal winds due to differential solar heating or due to gravitational lunar forcing move the ionospheric plasma against the geomagnetic field lines thus generating electric fields and currents just like a dynamo coil moving against magnetic field lines.
CHICAGO — The City of Chicago has announced the opening of warming centers as below zero wind chills are expected to enter the area starting Wednesday night into Thursday. According to The ...
The ring current system consists of a band, at a distance of 3 to 8 R E, [1] which lies in the equatorial plane and circulates clockwise around the Earth (when viewed from the north). The particles of this region produce a magnetic field in opposition to the Earth's magnetic field and so an Earthly observer would observe a decrease in the ...
June 20, 1988: “On the first day of summer Monday, Chicago-area residents experienced two weather milestones. The thermometer at O’Hare International Airport read 104 degrees at 4:26 p.m., the ...