Weather Word of the Day

June 16, 2019

Nacreous Clouds - Nacreous clouds are rare and are rarely found too far south of the poles. They form at an impressive elevation between 68,000 to 100,000 ft where temperatures are at or below -108F. They appear as large thin discs which tend to reflect vivid colors. Due to their high elevations, they can only be seen when the sun is just below the horizon.

June 15, 2019

Absolute Zero - A temperature of 0 on the Kelvin scale equates to -273 degrees C or -460 degrees F. This is theoretically the lowest possible temperature as there is no molecular motion at this temperature. Researchers at NASA have cooled sodium gas to just above absolute zero in a vacuum chamber.

June 14, 2019

Trough - An sharpened zone of cyclonic wind change usually associated with a zone of lower pressure, and can occur many places without actually becoming a front (lee-side a mountain chain, behind frontal zones, etc)

June 13, 2019

Super-Typhoon - A tropical cyclone in the western pacific basin that is the equivalent of a category 3 or higher hurricane in the atlantic and eastern pacific basin

June 12, 2019

Storm Surge - A rise of the sea level alone the shore that builds up as a storm (usually a hurricane) moves over water. It is a result of the winds of the storm and low atmospheric pressures.

June 11, 2019

Sprites - An upper-level atmospheric electrical discharge, usually reddish-orange in color, that occur high above thunderstorms.

June 10, 2019

Rawinsonde - An instrument attached to a weather balloon that measures atmospheric pressure, temperature, humidity, and wind speed/direction at different layers of the atmosphere.