First Day of Meteorological Spring: Severe Weather around the Bend

1st March 2019

It’s now Spring in the Northern Hemisphere, Meteorological Spring to be more exact.  March, April and May comprise the time period for Meteorological Spring.  March 20 (Vernal or Spring Equinox) through June 21 (Summer Solstice) is the time period for Astronomical Spring, which is determined by Earth’s tilt and rotation around the Sun.  Meteorological Spring is based on the seasonal transition between Winter and Summer weather conditions.  With the arrival of Spring comes a significant increase in severe weather. Severe storms and tornadoes can occur throughout the year, but the climatological peak occurs during late Spring and early Summer.

Sunlight increases with each passing day, earlier dawns and later sunsets. Warmer days are more pleasant, and moist air from the Gulf of Mexico is transported north. This moisture is potential energy stored in water vapor, fuel for thunderstorms.  The active roaring upper level jet stream of winter taps this moisture to produce significant severe weather events; high winds, large hail, flash floods and tornadoes.  This is a very general and basic explanation of the spring severe weather season.  Individual severe weather events are much more complex.  So with the more pleasant days, please stay weather aware.

Very powerful supercell thunderstorm updraft, which produced 5.25 diameter hailstones, explodes over Oregon, MO 7th June 2009 – Brewer/Drake

Non-identical twin tornadoes, from separate mesos, pass over Oklahoma wheat fields narrowly missing a farmstead near the town of Cherokee on 14 April 2012. – Brewer/Drake

Meteorologist Juston Drake’s arms are full of 4 and 5+ inch diameter hail collected in Oregon, MO on 7 June 2009. – Brewer/Drake



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