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Substantial tornado event, Tuesday 2/28 into Wednesday 2/29

SmokeEater

By SmokeEater,
in Central/Western States

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tornadotony

tornadotony

Posted
Posted

233

NWUS53 KTOP 290346

LSRTOP

PRELIMINARY LOCAL STORM REPORT

NATIONAL WEATHER SERVICE TOPEKA KS

946 PM CST TUE FEB 28 2012

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON

.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.

..REMARKS..

0903 PM TSTM WND DMG HARVEYVILLE 38.79N 95.96W

02/28/2012 WABAUNSEE KS COUNTY OFFICIAL

HEAVY STRUCTURAL DAMAGE TO HOMES AND CHURCH BUILDING IN

HARVEYVILLE DUE TO POSSIBLE TORNADO. REPORTS OF PEOPLE

TRAPPED IN STRUCTURES. TIME ESTIMATED BASED ON RADAR.

MRC

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JoMo

JoMo

Posted
Posted

TORNADO WARNING FOR...

SOUTHERN DOUGLAS COUNTY IN EAST CENTRAL KANSAS...

* UNTIL 1030 PM CST

* AT 1007 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A

SEVERE THUNDERSTORM WITH STRONG ROTATION CAPABLE OF PRODUCING A

TORNADO. THIS SEVERE STORM WAS LOCATED NEAR GLOBE...OR 11 MILES

NORTHWEST OF OTTAWA...MOVING NORTHEAST AT 80 MPH.

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SouthernNJ

SouthernNJ

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As has been mentioned, it looks like a damaging tornado southwest

of Topeka in Harveyville KS. This was the same storm that had

very strong rotation at times near and beyond Hutchinson KS. It produced

the full scope of severe weather during its path. As it entered the Topeka

CWA, the rotation weakened and storm mode turned into a line segment.

However, just before 9 PM CDT...radar showed a few showers out in front

of the line that moved north and merged with the line. Reflectivity then

clearly depicted a hook echo and the classic embedded supercell shape.

Velocity data showed a powerful increase in straight-line winds at around

850 PM...which is why I mentioned that Topeka and surrounding areas

prepare for it. The powerful inflow quickly grew into a brief but

concentrated tornado vortex signature between 858 PM and 902 PM CST.

The next scan, it vanished. The tornado timing has been listed as 903 PM.

The earliest I can say upon review that a TOR could have been issued

was around 900 to 901 PM...made even more difficult because Harveyville

is right on the county line, requiring more of an angular polygon.

In other words, I will give NWS Topeka a benefit here because of the difficult

circumstance, and that the earliest warning possible still would have been

too late for many of the residents. Hopefully everybody comes out of this OK.

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SmokeEater

SmokeEater

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Posted

As has been mentioned, it looks like a damaging tornado southwest

of Topeka in Harveyville KS. This was the same storm that had

very strong rotation at times near and beyond Hutchinson KS. It produced

the full scope of severe weather during its path. As it entered the Topeka

CWA, the rotation weakened and storm mode turned into a line segment.

However, just before 9 PM CDT...radar showed a few showers out in front

of the line that moved north and merged with the line. Reflectivity then

clearly depicted a hook echo and the classic embedded supercell shape.

Velocity data showed a powerful increase in straight-line winds at around

850 PM...which is why I mentioned that Topeka and surrounding areas

prepare for it. The powerful inflow quickly grew into a brief but

concentrated tornado vortex signature between 858 PM and 902 PM CST.

The next scan, it vanished. The tornado timing has been listed as 903 PM.

The earliest I can say upon review that a TOR could have been issued

was around 900 to 901 PM...made even more difficult because Harveyville

is right on the county line, requiring more of an angular polygon.

In other words, I will give NWS Topeka a benefit here because of the difficult

circumstance, and that the earliest warning possible still would have been

too late for many of the residents. Hopefully everybody comes out of this OK.

That couplet was literally there for 1 scan, damn near impossible to catch it. At least it was severe warned at the time.

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Memphis Weather

Memphis Weather

Posted
Posted

Had a brief, but strong couplet, posted at tnwx:

You can see the reflectivity enhancement in the hook, despite the couplet's occlusion, in the next scan:

You could have asked if you wanted to post my images ;) That's all right...

There was a reflectivity enhancement...albeit small...but the dual-pol signature (bottom two images) was MUCH more pronounced and also persisted two additional scans as the cell (though probably not producing a tornado still) moved northeast. Just unfortunate situation of it producing at absolutely the wrong time.

However...this shows what I already feel is one of the strongest points of the new dual-pol capabilities...tornadic debris detection. Very evident in many cases...even some weaker tornadoes. "Debris ball" no longer needed...

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andyhb

andyhb

Posted
Posted

You could have asked if you wanted to post my images ;) That's all right...

There was a reflectivity enhancement...albeit small...but the dual-pol signature (bottom two images) was MUCH more pronounced and also persisted two additional scans as the cell (though probably not producing a tornado still) moved northeast. Just unfortunate situation of it producing at absolutely the wrong time.

However...this shows what I already feel is one of the strongest points of the new dual-pol capabilities...tornadic debris detection. Very evident in many cases...even some weaker tornadoes. "Debris ball" no longer needed...

Sorry, my mistake, I'll credit you in the original post.

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JoMo

JoMo

Posted
Posted

Welp, may go try out the tornado shelter.....

SEVERE WEATHER STATEMENT

NATIONAL WEATHER SERVICE SPRINGFIELD MO

1039 PM CST TUE FEB 28 2012

KSC021-037-MOC011-097-290515-

/O.CON.KSGF.SV.W.0007.000000T0000Z-120229T0515Z/

CHEROKEE KS-CRAWFORD KS-BARTON MO-JASPER MO-

1039 PM CST TUE FEB 28 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CST

FOR WESTERN JASPER...SOUTHERN BARTON...SOUTHERN CRAWFORD AND CHEROKEE

COUNTIES...

AT 1035 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO

TRACK A SEVERE THUNDERSTORM 3 MILES EAST OF MCCUNE...OR 7 MILES

NORTHWEST OF CARONA...MOVING EAST AT 70 MPH. THIS STORM IS CAPABLE OF

PRODUCING LARGE DESTRUCTIVE HAIL UP TO BASEBALL SIZE...AND

DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM HAS A HISTORY OF

PRODUCING LARGE HAIL AND DAMAGING WINDS.

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andyhb

andyhb

Posted
Posted

It's going well north, their good. It would have to turn straight south, right now. Straightline wind may be a different story though.

No I realize that, but if I was in Joplin, I'd hate to see a tornado warning a county north. Too close for comfort as in nobody wants to see a tornado warning that close to Joplin in February...

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Dunkman

Dunkman

Posted
Posted

WIBW reporting a possible mass casualty situation in Harveyville. Command post being set up and senior officials from Shawnee County are on route. Some buildings completely gone.

http://www.wibw.com/..._140820683.html

Saw reports that the apartment building that caused the potential mass casualty situation turned out about as well as you could hope. 8 injuries but no fatalities.

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SmokeEater

SmokeEater

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Saw reports that the apartment building that caused the potential mass casualty situation turned out about as well as you could hope. 8 injuries but no fatalities.

When you guys hear a mass casualty situation, that usually doesn't mean a lot of deaths, but a good amount of injured people that you need a lot of resources for. Ambulances, triage, etc.

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tornadotony

tornadotony

Posted
Posted

911

NWUS53 KSGF 290500

LSRSGF

PRELIMINARY LOCAL STORM REPORT

NATIONAL WEATHER SERVICE SPRINGFIELD MO

1100 PM CST TUE FEB 28 2012

.TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON

.DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.

..REMARKS..

1055 PM TSTM WND DMG 2 SW PITTSBURG 37.39N 94.73W

02/28/2012 CRAWFORD KS PUBLIC

STRUCTURAL DAMAGE AND LOTS OF TREES DOWN NEAR 200TH AND

510TH STREET SOUTHWEST OF PITTSBURG...POSSIBLE TORNADO

DAMAGE

MGRIFFIN

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