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April 12th/13th and 15-16th Severe Weather Thread


andyhb

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Multivortex tornado on the ground with the initial Norman cell, with debris in the air. Becoming rain wrapped, don't know why they cancelled the TW.

Velocity doesn't match with that at ALL. Signature looks much much weaker. I'm siding with OUN for the moment...we all know KFOR usually gets crazy with these events more than the other outlets.

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May not be the best time for me to be making jokes but to be honest with you after living in that area for a long time I can say thats not an unusual occurrence.

I've never heard him do this, this is a first. I knew he blew things out of proportion, but not like that.

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I think we're seeing the exact reason I don't even watch their stream anymore. They're always doing this...FYI - Nothing on NWSChat corroborates this either.

Its like that station webcast is 10-15 minutes behind becuase they said they let the warning expire(that was at 5:30) there was a tornado reported at 5:19 per statement from NWS

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Its like that station webcast is 10-15 minutes behind becuase they said they let the warning expire(that was at 5:30) there was a tornado reported at 5:19 per statement from NWS

Yeah, and the radar was behind. Plus, he also said it would be near some town at 530 when it was about 535pm. It must be well behind.

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Its like that station webcast is 10-15 minutes behind becuase they said they let the warning expire(that was at 5:30) there was a tornado reported at 5:19 per statement from NWS

That could be a possibility. Good thing about KWTV feed is they have the time right there...so can be sure its not running behind.

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MESOSCALE DISCUSSION 0511

NWS STORM PREDICTION CENTER NORMAN OK

0540 PM CDT FRI APR 13 2012

AREAS AFFECTED...SE KS AND PORTIONS OF SW AND W CNTRL MO

CONCERNING...SEVERE THUNDERSTORM WATCH 161...

VALID 132240Z - 132345Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 161

CONTINUES.

TORNADO POTENTIAL IS INCREASING LATE THIS AFTERNOON ACROSS ERN

PORTIONS OF WW 161 MAY NEED AN UPGRADE TO A TORNADO WATCH.

CONVECTIVE TRENDS WILL CONTINUE TO BE MONITORED.

AS LOW LEVEL SHEAR INCREASES ACROSS SERN KS INTO SW/W-CNTRL

MO...SUPERCELL THUNDERSTORMS HAVE SHOWN SIGNS OF STRONGER ROTATION

OVER THE LAST HALF HOUR OR SO. IN FACT...WSR-88D VAD WIND PROFILES

FROM KINX SHOW LARGE LOW LEVEL HODOGRAPHS FAVORABLE FOR LOW LEVEL

ROTATION. AS THE LLJ CONTINUES TO STRENGTHEN THIS EVENING ACROSS THE

MOIST/UNSTABLE WARM SECTOR...THE TORNADO THREAT MAY INCREASE FOR

SEVERAL HOURS INTO THE MID EVENING HOURS. THIS AREA WILL CONTINUE TO

BE MONITORED.

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I had mentioned to someone 2 days ago I liked today better for OK/ S KS than I did tomorrow, my main reaason was I thought winds at 500mb were a bit stronger than I normally like to see tomorrow...now you can add in the issue of very late initiation and the possibility AM convection may screw things up (although the activity now over OK may kill any morning stuff). A big reason 5/24 was so bad in OK last year was that the activity the evening prior on 5/23 prevented AM crap from ever forming and ruining the 24th. The best idea tomorrow for you might be to position yourself somewhere near the KS/NE border, I initially wanted to say 135/70 intersection in C KS but that probably would be too far south to commit initially) you can sort of cover yourself for both DL activity in S KS or the warm frontal activity by staying in southern NE at first.

That sounds like a really good plan due to the lingering uncertainty. Hopefully we can swing it. We probably need to get back here early enough on Sunday in case severe wx pops here too. Thanks again.

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0547 PM CDT FRI APR 13 2012

AREAS AFFECTED...MUCH OF WESTERN/CENTRAL/NORTHEAST OK

CONCERNING...TORNADO WATCH 160...

VALID 132247Z - 140015Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 160 CONTINUES.

TORNADO WATCH 160 CONTINUES UNTIL 02Z. LARGE HAIL ASIDE...TORNADO

POTENTIAL MAY FURTHER INCREASE THROUGH SUNSET...ESPECIALLY ACROSS

SOUTHWEST/WEST-CENTRAL OK. WW 160 ADJACENT PORTIONS OF NORTHWEST

TX/EASTERN TX PANHANDLE ARE BEING MONITORED FOR AN ADDITIONAL WATCH

THIS EVENING.

SUPERCELLS CONTINUE TO DEVELOP/SPLIT OVER THE PAST FEW HOURS ACROSS

SOUTHWEST OK INTO MUCH OF CENTRAL OK...WITH LONGER-LIVED/SEVERE

PRODUCING EAST-NORTHEASTWARD MOVING RIGHT-MOVING SUPERCELLS. WITHIN

A CORRIDOR OF MODERATE INSTABILITY /1500-2500 J PER KG

MLCAPE/...VERY FAVORABLE WIND PROFILES WILL CONTINUE TO SUPPORT

LONG-LIVED SUPERCELLS CAPABLE OF LARGE HAIL/TORNADOES WITHIN THIS

SAME CORRIDOR...WITH A NORTHWARD EXPANSION INTO ADDITIONAL PORTIONS

OF WESTERN/NORTHERN OK AND PERHAPS ADJACENT NORTHWEST TX AS A LOW

LEVEL JET INCREASES AND FRONTAL BOUNDARY/DRYLINE AND ASSOCIATED

MOIST SECTOR RETREATS. REGARDING THE TORNADO THREAT...THE

AFOREMENTIONED SOUTHERLY LOW LEVEL JET IS EXPECTED TO STRENGTHEN

ESPECIALLY TOWARD/AFTER SUNSET. THIS LLJ INCREASE...COUPLED WITH A

MORE DISCRETE INITIATION/LONG-LIVED SUPERCELLULAR MODE AND MODIFYING

OUTFLOW-AIDED TRIPLE POINT...MAY LEAD TO A HEIGHTENED TORNADO THREAT

ESPECIALLY ACROSS SOUTHWEST/WEST-CENTRAL OK. THIS INCLUDES THE

POTENTIAL FOR A STRONG TORNADO.

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THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...

KIOWA COUNTY IN SOUTHWESTERN OKLAHOMA...

EXTREME NORTHEASTERN JACKSON COUNTY IN SOUTHWESTERN OKLAHOMA...

* UNTIL 645 PM CDT

* AT 611 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED

A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS

DANGEROUS STORM WAS LOCATED NEAR BLAIR...MOVING EAST AT 25 MPH.

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