Severe WX April 11th-13th, 2020 Severe Weather Threat

[Brice]

What was the rating of the Monroe tornado? I'd say mid range EF2

 

[buckeye05]

What was the rating of the Monroe tornado? I'd say mid range EF2

Was rated low end EF3. There were a few homes that sustained some exterior wall loss.

 

[Brice]

Yeah I was wondering after looking at the damage better, if this was an EF3, turns out it was.

 

[Equus]

Large number of EF3s from this event. Some of our decently big past ENH/MDT outbreaks had a low end EF3 as the big story of the outbreak but we may be on our way to 10+ that strong before surveys are over

 

[Brice]

Could some of the EF3 ratings get higher? Like the second supercell that produced that EF3 tornado down in southern MS?

 

[Equus]

The Chattanooga area tornado is currently at EF3+ but I haven't seen anything to indicate they'll go too much higher; the second long track Mississippi tornado is pegged at EF3+ and based on radar signature it's plausible they could find severe enough damage to bump it but I'm not counting on it. There's a couple of deadly high end ones in E GA/SC too but haven't looked to see if those are finalized yet

 

[Brice]

If they did it would most likely be a low-end EF4.

 

[Equus]

The Boaz tornado actually almost got an EF3, but they found exceptionally poor attachment on one of the homes almost destroyed. That long lived MCS/comma head cluster was amazing.

 

[Brice]

The Boaz tornado actually almost got an EF3, but they found exceptionally poor attachment on one of the homes almost destroyed. That long lived MCS/comma head cluster was amazing.

It lasted 100+ miles, producing all those tornado warnings, unbelievable.

 

[Brice]

Not to mention 75 miles of tornado emergencies.

 

[Shakespeare2016]

This thread has more pages than the April 27, 2011 thread.

 

[Kory]

More evidence that the the cyclic supercells that made it up into West Alabama (and ultimately produced the Lake Tuscaloosa tornado) came from the violent tornado in Southern MS are the many family photos that have been recovered in Sumter and Tuscaloosa. Spann has posted several tweets showing items recovered in West Alabama that belonged to people in Southern MS.

 

[akt1985]

I know there have been tornado outbreaks on Palm Sunday in the past. However, I cannot think of any significant tornado outbreaks that occurred on Easter until this past Sunday.

 

[skelly]

More evidence that the the cyclic supercells that made it up into West Alabama (and ultimately produced the Lake Tuscaloosa tornado) came from the violent tornado in Southern MS are the many family photos that have been recovered in Sumter and Tuscaloosa. Spann has posted several tweets showing items recovered in West Alabama that belonged to people in Southern MS.

Well maybe and maybe the debri was lifted by the tornado into upper level winds and taken north and East. There were letters from the April 8, 1998 F5 that were recovered in northeast Alabama and elsewhere. On April 27, 2011 the next day I found roofing shingles in my yard in Alabaster, and I don’t really recall any of the storms being to the south of me but to the northwest. Found larger debri where I worked in Hueytown which was a lot closer but a few miles southeast of the path.

 

[Bama Ravens]

Here are a couple of radar shots I got of the two violent tornadoes in southern MS on Sunday. Unfortunately, I was monitoring a storm near me in AL and I forgot to also get a shot of the CC.

 

[TornadoFan]

Holy...

 

[Cliffhanger]

Well maybe and maybe the debri was lifted by the tornado into upper level winds and taken north and East. There were letters from the April 8, 1998 F5 that were recovered in northeast Alabama and elsewhere. On April 27, 2011 the next day I found roofing shingles in my yard in Alabaster, and I don’t really recall any of the storms being to the south of me but to the northwest. Found larger debri where I worked in Hueytown which was a lot closer but a few miles southeast of the path.

We found debris in SW Shelby County the next day. I have a small box containing a piece of blue tarp, a piece of plastic outdoor playset, and a piece of a textbook page. I believe it all came from the Bibb County E-F3 that lifted just before reaching Shelby County. For several years, you could see the path of that one on Google satellite imagery. If you followed the path, had it not lifted, it would have gone right through Alabaster. My brother and I also found in our parents' yard in Homewood, a flattened cardboard box with a shipping label on it with the address of the AutoZone on 15th Street in Tuscaloosa. We actually watched it fall from the sky and land in the yard during the Jefferson County tornado warning (we were indoors, but not in the polygon). I think my brother kept that one.

 

[skelly]

We found debris in SW Shelby County the next day. I have a small box containing a piece of blue tarp, a piece of plastic outdoor playset, and a piece of a textbook page. I believe it all came from the Bibb County E-F3 that lifted just before reaching Shelby County. For several years, you could see the path of that one on Google satellite imagery. If you followed the path, had it not lifted, it would have gone right through Alabaster. My brother and I also found in our parents' yard in Homewood, a flattened cardboard box with a shipping label on it with the address of the AutoZone on 15th Street in Tuscaloosa. We actually watched it fall from the sky and land in the yard during the Jefferson County tornado warning (we were indoors, but not in the polygon). I think my brother kept that one.

Thanks. I actually forgot about the Bibb storm you mentioned.

 

[andyhb]

Walthall Co. upgraded to EF3 by LIX, not sure whether that will be increased further.

0339 PM TORNADO 5 NW SALEM 31.28N 90.17W
04/12/2020 F3 WALTHALL MS NWS STORM SURVEY

*** 1 FATAL, 1 INJ *** TOUCHED DOWN ON JEFFERSON RD.
MOVED NE THROUGH HOPE AREA THEN CROSSED HWY 27 AND
CONTINUED NE INTO LAWRENCE CO. ADDITIONAL ANALYSIS OF
DAMAGE INCLUDING NEW DATA POINTS SUPPORT RAISING THE
MAXIMUM ESTIMATED WINDS TO 150 MPH IN THE AREA OF JAMES
RATCLIFF RD. TWO FRAME HOMES WERE LEVELED IN THIS AREA.
TORNADO WAS RESPONSIBLE FOR ONE FATALITY IN WALTHALL CO
AND ONE KNOWN SERIOUS INJURY. EST MAX WINDS 150 MPH. PATH
LENGTH 6.67 MILES. EST PATH WIDTH 1200 YARDS/0.67 MI.
INFO PRELIMINARY.

 

[Equus]

Apparently surveyors at LIX weren't able to actually go on foot to the more heavily damaged locations and hadn't even included that data point in the preliminary rating yet; definitely could still see a further upgrade with additional analysis but mid EF3 is certainly closer than high EF2

Just so we're clear this is the damage in question