Showing posts with label vulnerability. Show all posts
Showing posts with label vulnerability. Show all posts

Monday, March 27, 2023

Did The Mississippi Tornadoes Friday Night Have To Be So Deadly?

Victims pick through the destruction of a deadly 
tornado in Rolling Fork, Mississippi, Photo via Twitter
by Aaron Rigsby @AaronRigsbyOSC
The death toll from Friday night's tornadoes in Mississippi rose to 26 as more severe weather and possible tornadoes pummeled the South on Sunday. 

I don't seen any reports of additional deaths on Sunday from the severe weather.  But I have to ask myself: Did that many people have to die in Friday's storms? 

This was the worst kind of tornado you could get. It was exceptionally strong, so unless you were in a storm shelter or extreme fortified building, chances of survival weren't great.

The tornado raced forward at 70 mph through the Mississippi darkness.  Before people knew it, it was upon them, despite warnings from the National Weather Service and highly dedicated, professional television meteorologists. 

People have a habit of relying on visual cues when endangered by a tornado. At night you don't have those cues.

With all those factors, it was almost inevitable there would be deaths and injuries. Even so, I'm convinced the toll of deaths and injuries cold have been lower.  

I've seen a lot of accurate commentary that the tornado hit an area with a lot of mobile homes, substandard housing and relative poverty.  Fear of a tornado tragedy like the one that hit towns like Rolling Fork have been a concern for years. 

True, some safe rooms and shelters opened to the public in some parts of Mississippi before Friday's storms. But I don't think there were enough community storm shelters for people in those mobile homes, or an effective system to coax residents out of their unsafe homes and into shelters in the hours before tornadoes touched down. 

Part of that is all the false alarms you get. Sometimes, a tornado watch is issued, but the tornadoes that do form don't seem particularly destructive. Or they are devastating, like on Friday night.  But these storms cover narrow paths. 

Thousands of people were at home just a few miles from the tornado path, blissfully unaware of the horrors nearby. 

Typically a tornado warning is issued anytime between a few minutes and a little less than a half hour before a twister strikes a particular location. That doesn't give much time to flee and drive to a shelter. It's really dangerous to be caught in a car during a tornado.

But forecasts continue to get better ahead of severe weather and tornadoes, with more lead time. Meteorologists are more and more frequently alerting specific target zones an hour or two ahead of time when they suspect a particularly dangerous situation will develop.

Friday night, about an hour and a half before the tornadoes starting raining death and destruction on Mississippi, NOAA's Storm Prediction Center released a statement. It said that thunderstorms that were about to cross the Mississippi River from Louisiana were entering an atmospheric environment that would encourage strengthening storms and tornadoes in Mississippi.

The statement said those atmospheric conditions seemed primed to create strong to intense tornadoes

This NOAA statement was released to the public, as all such short-term storm forecasts are,  but there were few systems in place to act on it. In a perfect world, that statement would have been the cue to quickly get people out of mobile homes in the northern half of Mississippi and into safer shelters for the night. 

NOAA released similar statements in the hour or two before a horrific tornado struck Mayfield, Kentucky in December, 2010.   Tornadoes that night killed 89 people, most of them in and near Mayfield. 

After that tornado, there were complaints that people were not allowed to leave work places or other sites to seek safe shelter in the time between the NOAA statement warning of impending danger and the time the tornado struck.  Similar complaints were made after a tornado warning came to fruition in Illinois that night, killing six people at an Amazon warehouse

It would take coordination and a little money to form a chain when these warnings are issued. You'd need shelters ready to open, then someone to help quickly flush people out of unsafe housing and into shelters in time for the tornado's arrival. 

A system like this would be especially helpful in the South, from Arkansas and Louisiana to Georgia. It's a region especially prone to strong, night time tornadoes, with large areas of poverty and substandard housing that's especially dangerous in such storms. 

As forecasting continues to improve in severe weather events, it's time to take that increased meteorological precision and put it to work for some of American's most vulnerable people. 

A new outbreak of severe weather seems likely late this week in the South and Midwest. If the Storm Prediction Center puts out more dire statements an hour or two before a powerful tornado, and people take heed, that will be a win. Hopefully the first of many wins. 

Monday, January 11, 2021

Record Number Of Billion Dollar Weather Disasters Was Another Reason To Hate 2020

The nation experienced 22 weather-related disasters
during 2020 that each caused at least $1 billion in 
damage. Another reason to hate the year 2020.
The United States last year faced a total of 22 weather disasters that caused at least $1 billion in damage.  

It was the most such disasters for any year on record.  It's just one more reason why the year 2020 really, really sucked. 

According to CNN:

"The cumulative cost of these disasters in 2020 is $95 billion, the fourth-highest total annual cost since 1980, behind 2017, 2005 and 2012 (all inflation adjusted to 2020 dollars)."

CNN continues: 

"This is the sixth year in a row that the US has experienced 10 or more separate billion dollar disasters,' NOAA climatologist Adam Smith told CNN Weather. Ten disasters has become the more recent standard of what to expect in a year, he added."

Hurricanes tend to be the most expensive weather disasters. Seven of the billion dollar disasters in 2020 were caused by hurricanes. If there's a silver lining, it's that this year's hurricanes didn't strike heavily populated places like Houston, Miami, and New York while they were at full strength. 

Those three other super expensive years involved hurricanes Harvey, Irma and Maria; in 2017; Katrina, Rita and Wilma in 2005; Sandy in 2012).

The most expensive disasters in 2020 were Hurricane Laura, with $19 billion in damage; western U.S. wildfires, at $16.5 billion, and the August 10 derecho in Iowa and surrounding states, $11 billion.  

People might be quick to blame climate change for the increasing costs of these disasters.  They're partly right, but there's a lot more going on than just a warmer world. 

Development continues to boom in places that are vulnerable: Ocean front property that can be wrecked by hurricanes, houses in the woods in wildfire zones, that kind of thing. 

Here in Vermont, we had the usual share of locally damaging storms but we were not part of any of the 22 $1 billion disasters that hit the nation in 2020.

The last time any part of Vermont had a weather related disaster declaration was from the Halloween storm of 2019, which caused widespread, destructive flooding and wind damage across northern and central Vermont. 

The Green Mountain State has proven prone to disasters, especially in the past decade or two.  Parts of Vermont have been declared weather-related disaster areas 18 times since 2010.  Most of those disasters primarily consisted of flooding. 

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