2011-11-07 MISC: OK

[Jeff Duda]

The Tipton and Fort Cobb Oklahoma mesonet stations both took direct hits from tornadoes in the event. Images included in the link: OK Mesonet ticker for 8 Nov 2011. The velocity couplet went directly over the mesonet site on radar, and was fun to watch. Unfortunately I don't have a screen grab of that, though.

ADD: OUN page for tornado info: http://www.srh.noaa.gov/oun/?n=events-20111107
ADD: From the Oklahoma Mesonet Facebook page:

Our technicians have returned from Tipton and Fort Cobb with amazing stories. We'll post more pictures tomorrow, but here's what our calibration staff have been able to retrieve from the recovered dataloggers:

Tipton recorded a wind gust of 86.4 mph before it was destroyed. The anemometer has yet to be found. The site experienced a pressure drop of 47.16 mb in 1 minute, recording a low of 913.47 mb!

Fort Cobb recorded a wind gust of 91.4 mph before it was driven into the ground. It had a more gradual pressure drop of 14 mb, recording a low of 944.81 mb.

I noticed they only show tornado tracks from the one supercell. There were others. Does anyone know if any of the other supercells produced tornadoes?

 

[Doug Drace]

Thanks for posting the link Jeff! It will be really interesting to see what, if any data they can recover from them!

 

[Andy Jackson]

I noticed they only show tornado tracks from the one supercell. There were others. Does anyone know if any of the other supercells produced tornadoes?

That is a good question.
Here's the NWS OKC page:
2011-11-07 EVENT
I think if storms could have held off on initiation a little later there would have been multiple tornado producers. The one that did may have had an outflow boundary to work with or just the best environment.

 

[Simon Brewer]

The first big supercell to pass over the Hobart area produced a tornado approximately 4 miles west-southwest of Hobart (at approximately 3:59 pm CST), which crossed over Highway 9. The tornado was a weak multivortex with bowl condensation funnel and lasted approximately 6-7 minutes. There was a second supercell, which passed over Hobart later, but it appeared to be outflow dominant. I noticed this tornado was not on the NWS page or SPC, so I sent all of our information on the tornado.

Was very happy at the time to document this tornado, but after seeing the amazing tornadoes in the Tipton vicinity it's hard not to wish we dropped south much ealier.

 

[Doug Drace]

At 4pm 11-10-11 NWS Norman has finally upgraded the Tillman County/Tipton Tornado from EF2 to EF4. Posted on their Facebook Page/Twitter. Its the first "November" Oklahoma EF4 Tornado since the 1950's. I knew there was NO WAY this tornado was a 2, as im sure everyone else who experienced most likely did as well.