May 18, 2021

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Weather News & Forecast

Dangerous Derecho and Tornado Threat Through the Overnight Hours

2 min read

This is a situation where you should call friends and relatives to make sure you they are aware of the threat and have at least two methods of being awakened when warnings are issued. 

Now Until 1am

The initial threat (now until midnight) is west of the Mississippi River (Oklahoma, Texas, Arkansas and Louisiana). There will be giant hail (>2″), tornadoes and damaging winds from the stronger storms. 

1amto 7am Saturday

I’ve added a rare extreme risk (purple) over eastern Mississippi and far western Alabama from 1am to 7am CDT. There is the risk of strong tornadoes during the pre-dawn hours. Later. one or two lines of thunderstorms with damaging winds and, a few tornadoes, will occur. 

7am to 4pm Saturday

Damaging winds are possible in the yellow area with a couple tornadoes in the orange area.

Thunderstorm Timing

Here is the forecast radar for 8pm:

Radar Forecast for 2am:

Overnight tornadoes are extremely dangerous. Please make sure you have a NOAA Weather Radio, WEA activated on your smartphone and an app to awaken you if a tornado warning is issued. 

It is time to prepare! Recommendations:

  • Make sure your phone and computer are charged but unplugged before the thunderstorms arrive because a lightning-induced power surge can damage them. 
  • Have at least three independent sources of storm warnings.
  • If you have friends who live in a mobile home or have issues with getting to shelter, act when the watch is issued, do not wait for the warning. 
  • Fill your car with fuel and do the same with your chain saw, if you have one. 
  • Get cash from the ATM — they don’t work during power outages. 

I will update again this afternoon.

Mike Smith

2021-04-09 21:20:00

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