Search results
Results from the WOW.Com Content Network
In meteorology, a low-pressure area, low area or low is a region where the atmospheric pressure is lower than that of surrounding locations. It is the opposite of a high-pressure area . Low-pressure areas are commonly associated with inclement weather (such as cloudy, windy, with possible rain or storms), [ 1 ] while high-pressure areas are ...
Map of pressure systems across North America. A pressure system is a peak or lull in the sea level pressure distribution, a feature of synoptic-scale weather.The surface pressure at sea level varies minimally, with the lowest value measured 87 kilopascals (26 inHg) and the highest recorded 108.57 kilopascals (32.06 inHg).
A trough is an elongated region of relatively low atmospheric pressure without a closed isobaric contour that would define it as a low pressure area. Since low pressure implies a low height on a pressure surface, troughs and ridges refer to features in an identical sense as those on a topographic map. Troughs may be at the surface, or aloft, at ...
The lowest pressure in a hurricane is always found at its center, or in its eye. In general, a lower pressure means a more intense hurricane in terms of its winds and overall destructive potential.
The coldest temperature ever recorded in Chicago city limits is −27 °F (−33 °C) at O'Hare on January 20, 1985, [18] though unofficial temperatures as low as −3 °F (−19 °C) have been recorded at Chicago Aurora Airport in far western suburbs and in the rural areas to the west of Chicago. [43]
One thing about the cold weather and Chicago — it’s not new. While the record took place Jan. 20, 1985, many of the city’s lowest recorded temperatures came from arctic snaps in 1872 and ...
The National Weather Service in Chicago reported that areas near and south of Interstate 80 received over 2 in (5.1 cm) of rain during this period. [25] In Alton, the area experienced a minor snowstorm on Wednesday, receiving less than an inch of snow. However, the accompanying winds caused more significant issues than the snow itself ...
A col, also called saddle point or neutral point, is in meteorology, the point of intersection of a trough and a ridge in the pressure pattern of a weather map. It takes the form of a saddle where the air pressure is relatively higher than that of the low-pressure regions, but lower than that of the anticyclonic zones. [1]