Weather Word of the Day
October 4, 2022
A stream of air that accelerates upward from the surface. The strongest updrafts are found within thunderstorms. Strong thunderstorms can see updraft speeds of over 100 mph!
October 3, 2022
Storm-Force Winds -
Taken from the beaufort scale, storm-force winds are classified as winds of 48 to 55 knots (55 to 64mph). Sailors utilize this scale to estimate the sea conditions that can be expected with each level of the beaufort scale. Wave heights of 30 to 40 feet are possible when the winds at sea reach storm-force.
October 2, 2022
Mesoscale is the study of meteorology concerned with small scale weather systems that are from 6 to 60 miles in diameter. The discipline of mesoscale meteorology is focused on phenomenon such as thunderstorms, land or sea breezes, and downslope wind storms.
October 1, 2022
Evaporation or Mixing Fog -
This type of fog forms when sufficient water vapor is added to the air by evaporation, and the moist air mixes with relatively drier air. The two common types are steam fog and frontal fog. Steam fog forms when cold air moves over warm water. This type of fog takes on the appearance of wisps of smoke rising off the surface of the water. The other type of evaporation fog is known as frontal fog. This type of fog forms when warm raindrops evaporate in a cool air mass near the ground.
September 30, 2022
In Situ -
In Situ is taken from Latin and means in one place. In meteorology, it refers to atmospheric measurements taken at the location of the entity being measured. The other way of measuring atmospheric entities is done using remote sensing. Remote sensing is when atmospheric measurements are taken by remote sensors that are far away from the locations they are taking readings. Weather Satellites are examples of remote sensors.
September 29, 2022
Fujita Scale or F-Rating -
A scale that uses visual damage to determine the strength of a tornado. The Fujita scale was developed by Dr. Fujita in 1971 while he was conducting research at the University of Chicago. The scale goes from 0 to 5, with 0 being weak and 5 being violent. The Fujita scale was decommissioned in the US in 2007 because it didn't fully account for different structural types. The enhanced Fujita scale is now being used to rate tornadoes.
September 28, 2022
An atmospheric sounding instrument that is attached to a weather balloon and is used to obtain temperature and humidity information between ground level and a height of a few thousand feet above the surface.