Author Topic: High risk in Indiana and western Ohio  (Read 4007 times)

0 Members and 1 Guest are viewing this topic.

Offline Michael Thomas

  • Elephant Trunk F2
  • *
  • Posts: 172
  • Gender: Male
High risk in Indiana and western Ohio
« on: 27 October 2010, 02:18:53 PM »
A high risk has been issued for Indiana and western Ohio valid from 26/1200Z - 27/1200Z.


Offline Jimmy Deguara

  • Australian and Tornado Alley storm chaser
  • Administrator
  • Wedge tornado F5
  • *
  • Posts: 2,218
  • Gender: Male
  • Storm Chaser since 1993, Tornado Alley 2001
    • Australia Severe Weather
Re: High risk in Indiana and western Ohio
« Reply #1 on: 27 October 2010, 03:06:32 PM »
And a tornado filmed at close range in the town of Rice Texas today or in the past 24 hours. Second season this year is a good one!

Raw: We're In The Tornado! (Amazing footage)


Jimmy Deguara
« Last Edit: 28 October 2010, 01:25:19 AM by Michael Bath »
Australian Severe Weather

Australian Thunderbolt Tours

Phone  0408 020468  (International :  61  2  408 020468)


  • Guest
Re: High risk in Indiana and western Ohio
« Reply #2 on: 27 October 2010, 10:00:16 PM »

One of the strongest storm systems of 2010 is exploding across the upper  midwest at this time. A very intense mid/upper-level jet is screaming into the  midwest as a related "atmospheric bomb" detonates over northern Minnesota. Very  strong, southerly surface winds are dragging seasonably rich moisture from the  Gulf Coast all the way into lower Michigan and the eastern Great Lakes region,  and when combined with the INSANE wind energy, a massive line of potentially  destructive storms is resulting. Widespread damaging straight-line winds will be  the main concern today as wind profiles are mostly linear over a large  portion of the upper midwest to lower Mississippi valley. However, speed  shear (the product of wind speeds that change with height -- this as opposed to  directional shear) can often contribute to the development of tornadoes in these  situations. Given the extreme wind energy, any tornadoes that do form will have  the potential to be strong, and any storms that are able to become discrete or  quasi-discrete with sustained mesocyclones would almost certainly have the  potential to produce violent tornadoes. Discrete convection will be more likely  in areas where surface winds are able to become more southeasterly (and thus  providing more favorable directional shear against the westerly/southwesterly  mid-level jet). These areas will see the greatest threat for tornadoes. The zone  of southeasterly surface winds will be spread out to the east of the center of  the surface low, meaning lower Michigan and generally into the Lake Erie region  and points south in Ohio. However, instability is generally weaker in these  areas, so it is more likely (but not guaranteed) that the wind shear will  overwhelm the limited instability and force a more linear storm mode regardless  of the directional shear. Storm mode aside, this is still an extremely volatile  system, and as such, the Storm Prediction Center has issued a rare October HIGH  RISK for areas of Lower Michigan into northwestern Kentucky. Subsequent outlooks  will likely shift the HIGH RISK area to the east as the system advances during  the day. Obviously, residents from the eastern Great Lakes, including southern  Ontario, all the way to the Gulf Coast should be very mindful of weather watches  and warnings today, monitor local broadcasts, and heed any warnings that are  issued. Dennis Sherrod and Michael Stanga are live-streaming the event as well,  so be sure to check out their streams on the LIVE page for a real-time look at what's going on in  their areas, as data permits.
« Last Edit: 28 October 2010, 01:20:48 AM by Michael Bath »

Offline Michael Bath

  • storm chaser
  • Administrator
  • Wedge tornado F5
  • *
  • Posts: 1,602
  • Gender: Male
    • Australian Severe Weather
Re: High risk in Indiana and western Ohio
« Reply #3 on: 29 October 2010, 02:41:48 AM »
via Blair Trewin at the BoM who commented on the intense low pressure system across the US:

Ended up at 954 hPa, the lowest pressure ever recorded in the continental US away from the immediate vicinity of the Atlantic and Gulf coasts.
Location: Mcleans Ridges, NSW Northern Rivers
Australian Severe Weather:
Lightning Photography:
Early Warning Network:
Contact: Michael Bath