Author Topic: Tornadoes and new world record giant hail South Dakota 23 July 2010  (Read 5545 times)

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Localized tornado outbreak possible in southeast SD today!
         


Intense thunderstorms capable of strong tornadoes appear likely this  afternoon and evening across eastern South Dakota and northeast Nebraska. A  mid-level shortwave trough is ejecting out of southern Montana right now; later  this afternoon, a strong surface low is expected to develop over south-central  South Dakota, bringing plenty of wind energy into northeast Nebraska and  southern SD. Extreme instability is anticipated over this same area, and the  latest RUC models suggest that storms should initiate by about 21z. This  environment looks very favorable for tornadic activity, so residents should  definitely be mindful of changing conditions. A number of our northern Plains live-streamers will be covering this event as well, so you can follow them on the Live page, as always! Strong storms are also possible over parts of the east coast, including the Delaware River areas in northeast PA east into the New York City vicinity -- lots of storms expected today across  the US!




Also, yesterday was a pretty eventful severe weather day for the Great  Lakes region. Storm chaser Andrew Pritchard caught the tornado below near Fort  Atkinson, WI, one of several tornadoes this storm produced!



         

http://www.tornadovideos.net/component/content/article/36-tornadoes/1259-localized-tornado-outbreak-possible-in-southeast-sd-today
         
« Last Edit: 25 July 2010, 03:56:15 AM by Michael Bath »

Offline Michael Bath

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Some massive hail was reported from these storms in Vivian (east of Murdo on the linked map), South Dakota


http://www.crh.noaa.gov/news/display_cmsstory.php?wfo=abr&storyid=55671&source=0

« Last Edit: 27 July 2010, 04:40:54 AM by Michael Bath »
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Offline Shaun Galman

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Hi MB,

WOW! That is seriously huge hail!

I read a report on Mike Hollingshead's (extremeinstability) site about that storm. He has a few structure shots there too.
Apparently a couple of the guys I know well on deviantart were in that hail core (near the Vault region) so I might see if they have any more shots of that monster hail.

Kindest regards.
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Offline Michael Bath

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The video from that link is worth a look. Puts it into perspective in the last part when he's holding it.

HUGE !!
Location: Mcleans Ridges, NSW Northern Rivers
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Offline Jimmy Deguara

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That is massive! I cannot believe that Aurora, Nebraska and then South Dakota approaches the record a few years ago and now this one just obliterates that!

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Jimmy Deguara
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Offline Shaun Galman

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Hi guys,

Here's another link from NOAA with some very nice photos and measurements of a few large hail stones.

http://www.crh.noaa.gov/news/display_cmsstory.php?wfo=abr&storyid=55671&source=0
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Re: Tornadoes and new world record giant hail South Dakota 23 July 2010
« Reply #8 on: 02 August 2010, 12:33:27 PM »
This is a You Tube video of the storm that produced the hailstones

WORLD RECORD HAIL producing supercell - South Dakota - July 23, 2010

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Jimmy Deguara
« Last Edit: 02 August 2010, 12:43:03 PM by Jimmy Deguara »
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Re: Tornadoes and new world record giant hail South Dakota 23 July 2010
« Reply #9 on: 05 August 2010, 07:27:28 AM »
here is the official release from NWS:

http://www.crh.noaa.gov/abr/?n=stormdamagetemplate
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Re: Tornadoes and new world record giant hail South Dakota 23 July 2010
« Reply #10 on: 05 August 2010, 11:39:45 AM »
I recall a discussion several years back in terms of the huge hailstones in the 6" to 8" range in the storm NSW database. This new record challenges claims of possible exaggeration. Several hailstones were reported in the 6" range in this storm alone. The high CAPE environments seem to favour these gorilla hail record events!

Regards,

Jimmy Deguara
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