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4/27-4/28 Tornado Outbreak Damage Assessment Thread


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Yeah, I was wondering the same thing-- what the tally is so far.

Briefly combing through this thread, I didn't see any reports Re: the long-tracker that went through Tuscaloosa-- or did I miss that one? I imagine there's a lot of work to do with that one.

I am working on it...I think the tally of EF4/EF5 combined is at least 10, but don't hold me to it yet.

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I am working on it...I think the tally of EF4/EF5 combined is at least 10, but don't hold me to it yet.

Oh, very cool. :) Are you going to make some data tables or maps?

P.S. I hope they do some visualized analyses like what they did for Parkersburg: http://www.crh.noaa.gov/images/dmx/parkersburg/Final-small-PDF-PARKERSBURG-NEW-HARTFORD-IOWA-EF-5-TORNADO.pdf

That is a hawt diagram. :wub: I love all the detail and the combination of map and photographic examples.

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I have been a little bit out of control and I am sorry everyone. I guess all this death and destruction has just mentally gotten me down and has been very overwhelming. I guess I am immature for thinking a lot about a dumb tornado rating instead of all the people who lost their lives because of it. Is there a place I can go to donate money for the victims families and survivors. Ill just set back and read the other posts and am hoping I can learn how this weather stuff works. Shane Turner.

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Oh, very cool. :) Are you going to make some data tables or maps?

P.S. I hope they do some visualized analyses like what they did for Parkersburg: http://www.crh.noaa....F-5-TORNADO.pdf

That is a hawt diagram. :wub: I love all the detail and the combination of map and photographic examples.

I am going CWA by CWA and putting info in a spreadsheet. The stuff along the AL/MS and AL/GA borders is going to drive me nuts.

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I am going CWA by CWA and putting info in a spreadsheet. The stuff along the AL/MS and AL/GA borders is going to drive me nuts.

Because of the sheer number of unique circulations and the crossing tracks? Or because of different NWS offices surveying different portions of the lifecycles of some of the same storms?

Ugh, I can imagine.

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TOIN

would be at least 2nd place.....here is a conservative very rough estimation so far

i will use 3 billion in damages (a fatality is 2 points these days, while 1960- 1980 1 point, before that 1/2 point adjustment for better lead times)

also pre 1990 F3 anf F4's worth 80% of todays rating, F5 same as todays)

fatalities 345 690 points

damages 3 billion 600 points

Tornadoes about 100 confirmed during 26-27th timeframe 100 points

Ef2 18 36 points

Ef3 18 180 points

Ef 4 8 160 points

Ef 5 1 30 points

1796 points

superoutbreak

2238

Flint/Wor

1031.5

Palmsunday

978

Tri state

804.5

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TOIN

would be at least 2nd place.....here is a conservative very rough estimation so far

i will use 3 billion in damages (a fatality is 2 points these days, while 1960- 1980 1 point, before that 1/2 point adjustment for better lead times)

also pre 1990 F3 anf F4's worth 80% of todays rating, F5 same as todays)

fatalities 345 690 points

damages 3 billion 600 points

Tornadoes about 100 confirmed during 26-27th timeframe 100 points

Ef2 18 36 points

Ef3 18 180 points

Ef 4 8 160 points

Ef 5 1 30 points

1796 points

superoutbreak

2238

Flint/Wor

1031.5

Palmsunday

978

Tri state

804.5

What do we call this thing? I know there were tornadoes farther north but most of the bad stuff was farther south.

Southern Super Outbreak?

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What do we call this thing? I know there were tornadoes farther north but most of the bad stuff was farther south.

Southern Super Outbreak?

As I'm going through doing this, I'm realizing the numbers are going to be a lot closer to the Super Outbreak than I thought.

Super Outbreak II?

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I didnt really count the tornadoes for any other purpose rather than to elucidate the WFO/state crossing tornadoes... Tony would probably have a much more complete spreadsheet and more statistics on the outbreak which I'm sure he will share later.

Four cross-WFO tornadoes [nearly] fully surveyed:

Hackelburg to Phil Campbell: EF4, 66 total fatalities, path length of 64.2 mi (at least).

Jefferson Co, AL to Bartow Co, GA: EF3+, unk fatalities, path length of 98 mi.

Ringgold, GA to Cleveland, TN: EF4, 20 total fatalities, path length of 48 mi.

Snell, MS to Choctaw Co, AL: EF4, 7 total fatalities, path length of 92.3 mi.

Not fully surveyed (a preliminary list):

The other two Marion Co EF3's need to be surveyed by MEG (or JAN, depending on start location) and, for one of them, HUN.

The Dade-Walker Co, GA tornado started in HUN's territory.

(edited for some minor errors)

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As I'm going through doing this, I'm realizing the numbers are going to be a lot closer to the Super Outbreak than I thought.

Super Outbreak II?

The Wikipedia article for this event has estimated damages in the $2-5 billion range, which would put it near (or possibly above) the Super Outbreak when adjusted for inflation. I wasn't sure I'd live to see the day that something would come close to the Super Outbreak, but it appears this one did in multiple categories. The geographic extent or lack thereof of violent tornadoes is one of the only things that falls short.

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From NWS Binghamtom NY:

04/28/2011

0550 AM

2 NW UNIONDALE

SUSQUEHANNA

PA

NWS STORM SURVEY

AN EF0 TORNADO...WITH A PATH LENGTH OF 1.2 MILES...AND A PATH WIDTH OF AROUND 80 YARDS...CAUSED TREE AND SOME STRUCTURAL DAMAGE. MANY TREES WERE UPROOTED...WITH THE TORNADO LIFTING THEREAFTER FOR A BRIEF TIME. WHEN THE TORNADO TOUCHED DOWN AGAIN...IT DAMAGED A MOBILE HOME. PART OF THE ROOF WAS TORN OFF...AND THROWN ABOUT 100 YARDS.

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PUBLIC INFORMATION STATEMENT

NATIONAL WEATHER SERVICE HUNTSVILLE AL

939 PM CDT SAT APR 30 2011

...PRELIMINARY STORM SURVEY INFORMATION FROM JACKSON COUNTY...

A PRELIMINARY STORM SURVEY OF THE DAMAGE INCURRED ACROSS SOUTHERN AND

EASTERN JACKSON COUNTY IS ONGOING BY NATIONAL WEATHER SERVICE PERSONNEL.

INITIAL FINDINGS ARE AS FOLLOWS:

* EVENT TYPE: TORNADO

* EVENT DATE: 04/27/11

* ESTIMATED PEAK WIND: 190.0 MPH

* PRELIMINARY RATING: EF-4

* PATH LENGTH: UNDETERMINED

* MAXIMUM PATH WIDTH: 1/2 - 1 MILE

* FATALITIES: 6

* INJURIES: UNDETERMINED

* SUMMARY:

A VIOLENT LONG TRACK TORNADO BEGAN ITS LIFE ABOUT 3 MILES NORTHEAST

OF SECTION AS AN EF-0 TO EF-1 TORNADO WITH PEAK WIND SPEEDS OF 70 TO

90 MPH SNAPPING OR UPROOTING SEVERAL SOFT AND HARDWOOD TREES. THE

TORNADO RAPIDLY INTENSIFIED TO HIGH END EF-3 TO LOW END EF-4 STRENGTH

WITH PEAK WIND SPEEDS OF 150 TO 170 MPH AND A PATH WIDTH OF 1/2 TO

3/4 MILE AS IT ROARED INTO AREAS NORTHEAST OF PISGAH AND NORTH OF

ROSALIE. RESIDENTS INTERVIEWED REMARKED THAT THIS TORNADO WAS MULTI-

VORTEX WITH UP TO THREE TORNADOES MERGING INTO ONE VERY LARGE

TORNADO. THERE WAS SOME EVIDENCE OF THIS IN THE DAMAGE SWATH...BUT

AN AERIAL SURVEY MAY PROVE MORE TELLING.

THIS TORNADO SWARMED SEVERAL MOBILE HOMES AND BLOCK FOUNDATION HOMES

IN ITS PATH...AND SNAPPED OR UPROOTED THOUSANDS OF TREES. NUMEROUS

TREES WERE DEBARKED IN THE PROCESS. THE TORNADO LEVELED AT LEAST TWO

MOBILE HOMES AND SWEPT THEIR REMAINS HUNDREDS OF YARDS DOWNWIND.

THREE WERE KILLED IN THREE SEPARATE HOMES. SEVERAL VEHICLES WERE

LAUNCHED OR SWEPT SEVERAL YARDS IN DIFFERENT DIRECTIONS...IN A FEW

CASES UP TO 50 YARDS AWAY FROM THEIR PARENT LOCATION. THE FRIENDSHIP

CHURCH ROOF WAS HEAVILY DAMAGED. SEVERAL FARMS WERE ALSO AFFECTED...WITH

BARNS AND CHICKEN HOUSES HEAVILY DAMAGED OR DESTROYED.

AS THE TORNADO CONTINUED ITS TRACK...IT INTENSIFIED EVEN FURTHER TO A

HIGH END EF-4 INTENSITY WITH PEAK WINDS OF UP TO 190 MPH AS IT

APPROACHED THE FLAT ROCK AND HIGDON COMMUNITIES. THE TORNADO KILLED

ANOTHER THREE FROM THE SAME FAMILY AT A RESIDENCE SOUTHWEST OF FLAT

ROCK. THE TORNADO MOWED THOUSANDS OF TREES IN A 1/2 TO 3/4 MILE PATH

WIDTH. ONE WELL BUILT BLOCK FOUNDATION HOME LITERALLY EXPLODED AS THE

TORNADO STRUCK...LIFTING AND SWEEPING ALL ITS STRUCTURE AND CONTENTS

DOWNWIND...IN SOME CASES SEVERAL HUNDRED YARDS. A PROPANE TANK WAS

LIFTED AND DROPPED SEVERAL FEET AWAY. HOWEVER...MIRACULOUSLY...A

MOTHER AND THREE CHILDREN TAKING REFUGE IN A HALLWAY WERE COMPLETELY

UNHARMED. AT THIS FARM...ALL FENCING WAS DESTROYED AND UP TO 19

CATTLE WERE KILLED.

A SEPARATE WEAKER TORNADO TRACK OF EF-0 TO EF-1 INTENSITY SNAPPED OR

UPROOTED NUMEROUS TREES...DAMAGING A FEW HOMES AND MOBILES HOMES

ALONG AND NEAR THE HIGHWAY 71 CORRIDOR FROM NEAR SECTION TO THE SOUTH

SIDE OF PISGAH. THE ASSOCIATED MESOCYCLONE EVENTUALLY MERGED AND

POSSIBLY INTENSIFIED THE VIOLENT TORNADO THAT WAS ALREADY IN PROGRESS

NEAR PISGAH WHICH EVENTUALLY TRACKED NORTHEAST THROUGH COMMUNITIES OF

FLAT ROCK AND HIGDON.

* EVENT TYPE: TORNADO

* EVENT DATE: 04/27/11

* ESTIMATED PEAK WIND: 90.0 MPH

* PRELIMINARY RATING: EF-1

* PATH LENGTH: UNDETERMINED

* MAXIMUM PATH WIDTH: 300 YARDS

* FATALITIES: 0

* INJURIES: UNKNOWN

THESE FINDINGS ARE PRELIMINARY AND ARE SUBJECT TO ADJUSTMENT.

A SURVEY TEAM WILL BE REDISPATCHED SUNDAY TO ASSESS THE REMAINDER

TRACK OF THIS TORNADO AS IT IS SUSPECTED TO REACH THE GEORGIA BORDER.

THIS TEAM OR AN ADDITIONAL TEAM WILL LIKELY BE DISPATCHED TO

NORTHEASTERN JACKSON COUNTY IN THE BRIDGEPORT AREA TO DOCUMENT A

SEPARATE TORNADO TRACK. IN ADDITION...INFORMATION IS BEING REVIEWED

BY A STRUCTURAL ENGINEER AND METEOROLOGIST.

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How about Mega Outbreak?

Maybe Neil Youngs Outbreak

The Alabama Slammer

Or Obamas Katrina (Fox news's pick.)

However I perfer the 2011 Super Outbreak. That way 10 years from now people won't be claiming it caused the Space Shuttle Columbia to crash or the Columbine shooting.

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