Severe Outbreak - This Weekend - Discussion

[Arron]

Double high risk box for tomorrow anyone?? WOW!

http://www.spc.noaa.gov/products/outlook/day2otlk.html

[user700]

Tornado Watch 160

Note: The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.

Note: Click for Watch Status Reports.

SEL0

URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 160

NWS STORM PREDICTION CENTER NORMAN OK

130 PM CDT FRI APR 13 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF

OKLAHOMA

A SMALL PART OF NORTHWEST TEXAS

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 130 PM UNTIL 900

PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 35 MILES WEST OF WICHITA FALLS

TEXAS TO 20 MILES NORTH NORTHWEST OF PONCA CITY OKLAHOMA. FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU0).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS.

DISCUSSION...STORMS ARE BEGINNING TO DEVELOP OVER SWRN OK AS THE CAP

HAS WEAKENED WITHIN A STRONGLY UNSTABLE ENVIRONMENT WITH MLCAPE OF

2000-2500 J/KG. ALTHOUGH DYNAMIC FORCING FOR LARGE SCALE ASCENT IS

SUBTLE...NUMERICAL GUIDANCE INDICATES THAT STORMS WILL CONTINUE TO

DEVELOP TOWARD NRN OK THIS AFTERNOON...WITH CONVECTIVE POTENTIAL

ALSO INCREASING ALONG THE NWRN EDGE OF MOISTURE AS IT RETREATS NWWD

LATER THIS AFTERNOON AND EVENING. DEEP LAYER SHEAR OF 40 KT IN THE

LOWEST 6 KM WILL FAVOR FORMATION OF SUPERCELL STRUCTURES...WITH AN

INITIAL THREAT FOR LARGE HAIL AND STRONG WIND GUSTS. WITH

TIME...LOW LEVEL WINDS/SHEAR WILL STRENGTHEN WITH A SUBSEQUENT

INCREASE IN TORNADO POTENTIAL LATER THIS AFTERNOON AND EVENING.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 23025.

[Snowangel-MK]

Very Very Serious Wordings from the SPC.

Wow, all the best for your 50th tornado Paul - take care and have fun !

[Arron]

We're roughly 35 miles north of the Hobart cell.

[user700]

We're roughly 35 miles north of the Hobart cell.

[Tom Lynch]

We're roughly 35 miles north of the Hobart cell.

I am following you chaps and hope you bag a couple

Tom

Edited April 13, 2012 by Tom Lynch

[Paul]

The teams stream is live here for anyone who hasn't seen it

http://content.wdtinc.com/popout/index.php?M=14613&C=20643&O=10432

[Arron]

Core punch time!

[the storm fisherman]

rotating wall cloud on channel9 live vid feed

[the storm fisherman]

funnel cloud possible tornado sw of norman

confirmed tornado

[nsrobins]

Turning a bit cruddy in OK, but looks like better play further N in E KS in the next hour.

May inprove in the next few hours further south as the LLJ gets going.

[user700]

Oklahoma radar

[Arron]

ight under the hook of this thing, rotation to our left and right!

[Arron]

Heading back west to take a look at these 2 cells that have popped up, this other stuff looks a bit messy

[weatherobsuk]

Tornado damage in Norman, LIVE STREAM

http://kfor.com/on-air/live-streaming/

[user700]

Heading back west to take a look at these 2 cells that have popped up, this other stuff looks a bit messy

Storms look interesting now to the south west

[user700]

Lots of areas of rotation on this storm now

[Norfolk Sheep]

Hi folks, long time since I visited

An FB group is reporting a tornado on the ground NE of Altus in Jackson County, possible EF3/ EF4. Also reports of major damage nr Blair, OK.

[user700]

Hi folks, long time since I visited

An FB group is reporting a tornado on the ground NE of Altus in Jackson County, possible EF3/ EF4. Also reports of major damage nr Blair, OK.

There was a mesocyclone there on radar

[user700]

Wow impressive storm now on the live stream

http://content.wdtin...C=20643&O=10432

Edited April 14, 2012 by danieluk

[Arron]

Just seen the nado east of cooperton Paul's number 50!

[Arron]

4 miles south east of the tornado warned cell near Carnegie, gonna scoot north a touch and take a closer look

[nsrobins]

What a decision this morning. The behaviour of the surface low in pushing the DL into the warm sector further north has increased the potential in Nebraska perhaps in preference now to further south. I suspect there will be plenty of head scratching early doors, and a 5 hour sprint up th I35 might be worth a punt once the data is digested?

edit: actually the 00NAM has a focus of 9+ EHI right on the KS/NE border at 00Z Sun. The surface low develops a tad further south which will help back the surface flow a bit more.

If I was taking a very late night peek at data in a motel in OKC now I'd be seriously planning an early start and a long trip north.

Edited April 14, 2012 by nsrobins

[Tom Lynch]

You could be right with a drive north

24 surface progs

Edited April 14, 2012 by Tom Lynch

[Harry]

Deleted due to repetition

Edited April 14, 2012 by Harry