D is for Derecho

Just a couple of months after a devastating tornado tore across Nashville, Mother Nature had another blow for Music City. Late in the evening on Saturday, May 1, a complex of severe thunderstorms developed across southern Kansas. They continued tracking east through Missouri and western Kentucky over the next morning before finally reaching central Tennessee by the afternoon.

Shelf cloud approaching Hwy109 at I-40 near Lebanon, TN on May 3, 2020
photo by NWS Nashville meteorologist Brendan Schaper
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March Madness – And We Aren’t Talking Basketball

NCAA March Madness officially runs from March 17 through April 7 this year, but that’s not what this blog is about! March is here, spring is just around the corner, and we are entering one of the wildest months for weather. As one of the “shoulder” or transition months between winter and spring, March is known for a smorgasbord of wild weather events. Extreme cold? Check. Extreme heat? Check. Blizzards? Check. Tornadoes? Check. Flooding? Check. Let’s take a look back at some of the most historical weather events that have occurred in the third month of the year.

The National Weather Service in Cheyenne’s parking Lot in the thick of a blizzard in March 2019. Photo by NWS MIC Jeff Garmon.
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Tornado Preparedness? In December? Yep!

Hi friends. For those who might not be aware, the STM team is actually now based in two different areas – the Northeast, where we were founded, and the Southeast, where one of our team members now lives! Unsurprisingly, we now deal with very different weather-related issues. For example, at the time of this writing, I know that those of you living in New York are dealing with a winter storm all day today (December 17). On the other hand, yesterday I was able to go for a run in a tank top because the high temperature in my town was 75 degrees! Unfortunately, no location is perfect, and the southeast is known for it’s secondary severe weather season beginning in the late fall, sometimes lasting through early winter. In fact, on December 16, 2000, a powerful EF-4 tornado tore through Tuscaloosa County, killing 11 and injuring over 100. The tornado was on the ground for 18 miles, all within Tuscaloosa County. The tornado path was estimated to be 750 yards wide at its maximum intensity. Although the warnings were excellent for this tornado, the public perception still wasn’t where it should be.

Damage to houses from the December 16, 2000 tornado.
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Dallas Fort Worth October 2019 Tornado

While spring and summer are undoubtedly the most active times for severe thunderstorms across the United States, autumn also brings an increased risk of severe weather outbreaks. Dr. Gregory Forbes, a recognized severe weather expert, identified the second half of October and “especially November” as a notable time period for strong storm systems to develop. “In many ways, this is the counterpart to spring, when strong fronts and upper-air systems march across the United States. When enough warm, moist air accompanies these weather systems, the unstable conditions yield severe thunderstorms and sometimes tornadoes,” Forbes said. His statement came after he examined storm statistics and found six of the largest 55 known tornado outbreaks on record had occurred in the fall. Over 1,000 tornadoes impact the United States each year, and more occur in Texas than any other state.

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Great Plains Severe Weather and Tornadoes: May 20, 2019

A storm system moving into the Great Plains this past Monday resulted in an outbreak of severe weather, including flooding and some tornadoes, across portions of Texas, Kansas and Oklahoma. Thankfully, none of the reported tornadoes did extensive damage or caused widespread injuries. This was thanks in part to the fact that the tornadic storms did not hit major metropolitan areas, but also largely due to excellent communication of risk and appropriate preparedness actions by the National Weather Service. Let’s take a closer look at how this event unfolded…

Courtesy: KWTV-KOTV.
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