US Storm Chasing 2012

[Willoughby]

Bust in eastern Montana yesterday thanks to a very strong cap. 700mb temps pushing 15C on the SE MT/WY border were too warm for convective initiation. Came late though with height falls after dark.

Chasing northeast North Dakota and possibly Manitoba where helicity and CAPE is maximised.

[NZstorm]

There was a 2 billion dollar hail storm in Dallas on Wednesday. That's an estimate of the insurance claims that could be made.
It looks like it could be one of the costliest thunderstorms in US history.

Clip of the hail
http://www.youtube.com/watch?v=asHyyfH_ ... re=related

[Thunder]

Man that's crazy hail! Thanks for the clip.

[jamie]

Awesome. I've never experienced massive hail. Had ping pong ball sized but that's it. Driven back to see large hail but that's different to actually watching the fall.

[Manukau heads obs]

tornado caught on security cameras
http://www.youtube.com/watch?v=SWiPWwOajtY

[Orion]

Wow, frightening, havoc.

[Manukau heads obs]

what is more frightning is how many security cameras!
the tornado just clipped them...you can see it in the corner at about 1 minute

[tgsnoopy]

what is more frightning is how many security cameras!

In NZ it's unusual, not so in the US.

[mikestormchaser]

thats an awesome video!! weather events are getting more commen every year so it seems.
Wonder if Canterbury/ Christchurch will see a once in a 100 year storm this storm season.. never know

[Richard]

Only if Mike they come without the hail

[NZstorm]

Ordinary spring day in Woodward Oklahoma!

http://www.youtube.com/watch?v=qrTSd7VvcdY

[jamie]

Haha that's very ummm mid west USA

[Richard]

I see one hail stone got her on head though, but really not even trying to seek shelter

[Richard]

This is a ripper of a storm also.

http://www.youtube.com/watch?v=3U79qL5fofQ

[NZstorm]

This is a ripper of a storm also.

More like an NZ style hailstorm that although very intense.


There was a thunderstorm heat burst in Nebraska last night at Broken Bow. The temperature rose from 23C to 34C at 4am. Descending air compresses and warms, an extreme example of what happens in a Canterbury NWer.

[NZstorm]

A lot of severe thunderstorm warnings out for the US today with the gfs showing lifted index values upto -16C!

The derecho that occured over the weekend that knocked out the power in the eastern US has been labeled a superstorm. It was moving at over 100km/h and traveled from the midwest to the eastern coast in one night. The media report it came without warning but the SPC had a mod risk up on the day!

[jamie]

Could someone define a little what the storm was. Was it a fast moving front? or Gust? or what?

What was the term Drecho they used?

[NZstorm]

The derecho starts off as some convection in the midwest which is triggered by a boundary and the storm propagates eastward and expands as it does so forming an MCS. With Saturdays case the derecho hitched a ride eastward on the jet stream and due to record breaking heat over the eastern US, it was moving into CAPE values as high as 5000j/kg.

[Manukau heads obs]

check out
http://dmmk.org/storm-p94r0/loop.gif

[NZstorm]

Great clip. Interesting how it dissolved as soon as it reached the cooler sea. You can also see the affect of the Appalachians on it.

[Richard]

Interesting alright but it appeared to have dissolved because of the radars distance limitations would it like??

[NZstorm]

Ground staff trying to keep the baseball pitch dry in a storm in Illinois!

[Richard]

Gave up in the end

[NZstorm]

Tornadoes on the Canadian Prairies Tuesday.

http://tornadohunter.ca/tornado-hunter- ... hewan.html


I notice SPC have a Mod Risk for derecho's over the NE USA tomorrow!

[Richard]

Some great photos there hey