Plains Tornado Outbreak 4/14-15

#121 Postby **CrazyC83** » Fri Apr 13, 2012 3:47 pm

SEL1

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 161
NWS STORM PREDICTION CENTER NORMAN OK
340 PM CDT FRI APR 13 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

SOUTH CENTRAL AND SOUTHEAST KANSAS
EXTREME WESTERN MISSOURI

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 340 PM UNTIL
1000 PM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES SOUTHWEST OF
CHANUTE KANSAS TO 45 MILES EAST NORTHEAST OF EMPORIA KANSAS. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU1).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

OTHER WATCH INFORMATION...CONTINUE...WW 160...

DISCUSSION...STORMS ARE INCREASING INTO EXTREME SERN KS WITHIN A
MODERATELY UNSTABLE AIR MASS WITH MLCAPE OF 1500-2000 J/KG.
ADDITIONAL STORMS ARE EXPECTED TO DEVELOP ALONG THE WRN EDGE OF THE
LOW LEVEL MOISTURE GRADIENT AS THIS RETREATS NWWD THIS EVENING.
LOCAL VWP PROFILES EXHIBIT VEERING WITH HEIGHT AND SUFFICIENT DEEP
LAYER SHEAR TO SUPPORT ORGANIZED CONVECTION INCLUDING A FEW
SUPERCELLS. PRIMARY THREAT WILL BE LARGE HAIL AND STRONG WIND
GUSTS...ALTHOUGH AN ISOLATED TORNADO CANNOT BE RULED OUT ESPECIALLY
THIS EVENING.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 22025.

...WEISS

#122 Postby **CrazyC83** » Fri Apr 13, 2012 3:48 pm

MESOSCALE DISCUSSION 0510
NWS STORM PREDICTION CENTER NORMAN OK
0339 PM CDT FRI APR 13 2012

AREAS AFFECTED...CNTRL/WRN OK...PARTS OF WRN NORTH TX

CONCERNING...TORNADO WATCH 160...

VALID 132039Z - 132215Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 160 CONTINUES.

SCATTERED SUPERCELLS OVER SWRN/CNTRL OK AND PARTS OF WRN NORTH TX
WILL CONTINUE TO TRACK ENEWD/EWD AND APPROACH THE I-35 CORRIDOR
DURING THE NEXT COUPLE OF HOURS. THESE STORMS WILL PERSIST IN AN
ENVIRONMENT CHARACTERIZED BY SBCAPE VALUES OF 2500-3500 J/KG AND
EFFECTIVE BULK SHEAR MAGNITUDES OF 35-50 KT...WITH SUSTAINED
MID-LEVEL MESOCYCLONES NOTED ON AREA RADAR IMAGERY. VERY LARGE HAIL
WILL BE A CONCERN WITH ANY PERSISTENT SUPERCELL STRUCTURES THROUGH
LATE AFTERNOON. ONE SUPERCELL EXHIBITING NOTABLE EWD DEVIANT MOTION
FROM THE MEAN FLOW IS APPROACHING PARTS OF THE OKC/NORMAN
AREAS...WHICH WILL LIKELY BE IMPACTED BETWEEN 2050 AND 2130Z. A
LOCAL EWD EXTENSION OF THE TORNADO WATCH HAS BEEN COORDINATED WITH
THE NORMAN WFO TO ADDRESS A SHORT-TERM THREAT OUTSIDE OF WW160 IN
CNTRL OK...AND AN ADDITIONAL WW TO THE EAST MAY EVENTUALLY BE
REQUIRED.

DESPITE LOW-LEVEL SHEAR CURRENTLY BEING SOMEWHAT MARGINAL FOR
TORNADOES -- 0-1 KM SRH OF 135 M2/S2 PER TWIN LAKES VWP DATA --
LOW-LEVEL SHEAR WILL LIKELY INCREASE LATER THIS AFTERNOON INTO THIS
EVENING COMMENSURATE WITH THE STRENGTHENING NOCTURNAL BOUNDARY-LAYER
WIND MAXIMUM. AS SUCH...THE THREAT FOR TORNADOES WILL INCREASE.
ALSO...ADDITIONAL STORMS...INCLUDING SUPERCELLS...WILL LIKELY
DEVELOP W/NW OF THE ONGOING SUPERCELLS DURING THE NEXT FEW HOURS.
THIS WILL OCCUR AS THE FRINGES OF THE RICHER LOW-LEVEL MOISTURE
EXPAND WWD/NWWD OWING TO THE ISALLOBARIC FLOW ASSOCIATED WITH SFC
PRESSURE FALLS OVER NM/SRN CO. AS SUCH...A CORRESPONDING INCREASE IN
THE THREAT FOR SVR STORMS INCLUDING TORNADOES WILL BUILD INTO PARTS
OF W-CNTRL...NWRN...AND N-CNTRL OK AFTER 2230Z.

..COHEN.. 04/13/2012

ATTN...WFO...TSA...OUN...

LAT...LON 36779599 36039627 34889694 33919845 34079986 35409974
36479885 36919818 36939680 36779599

#123 Postby **cycloneye** » Fri Apr 13, 2012 3:51 pm

The last time Oklahoma City was hit by a strong Tornado was on May of 1999.

Wikipedia

Fyzn94 · #124 Postby **Fyzn94** » Fri Apr 13, 2012 3:56 pm

Folks, I've got that cold feeling now. With what I've seen from the Storm Prediction Center, I'm afraid that we will have a large loss of life with this beastly system. Let's all just prepare for the worst while hoping for the best.

#125 Postby **cycloneye** » Fri Apr 13, 2012 3:57 pm

A Facebook message about the SPC office plans in case they have to evacuate.

"I'll forego the usual "Big outbreak coming tomorrow, you need to get AllisonHouse" advertisement and just say this: We've learned SPC will have a fully staffed, fully operational backup office working in tandem at Scott Air Force Base near East St. Louis, IL in the event the Norman, OK main office has to evacuate, or gets hit by a tornado. Need I say more?"
Like-Share-3 minutes ago

TwisterFanatic · #126 Postby **TwisterFanatic** » Fri Apr 13, 2012 4:00 pm

We have our 1st Tornado warning for the cell just south of OKC.

Fyzn94 · #127 Postby **Fyzn94** » Fri Apr 13, 2012 4:01 pm

TwisterFanatic wrote:We have our 1st Tornado warning for the cell just south of OKC.

Here we go...

#128 Postby **cycloneye** » Fri Apr 13, 2012 4:02 pm

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
359 PM CDT FRI APR 13 2012

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
CLEVELAND COUNTY IN SOUTH CENTRAL OKLAHOMA...

* UNTIL 430 PM CDT

* AT 355 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS
DANGEROUS STORM WAS LOCATED NEAR NEWCASTLE...MOVING EAST AT 25
MPH.

* LOCATIONS IMPACTED INCLUDE...
NORMAN...STELLA AND LAKE THUNDERBIRD.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 108 AND 115.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GET IN...GET DOWN AND COVER UP. TAKE COVER NOW IN A STORM SHELTER
OR AN INTERIOR ROOM OF A STURDY BUILDING. STAY AWAY FROM DOORS AND
WINDOWS.

&&

TwisterFanatic · #129 Postby **TwisterFanatic** » Fri Apr 13, 2012 4:02 pm

Rain-wrapped Funnel, nearly on the ground. Big cone funnel

TwisterFanatic · #130 Postby **TwisterFanatic** » Fri Apr 13, 2012 4:04 pm

A Tornado was on the ground, briefly, was a big cone. Was rain-wrapped and News9 had it live on their helicopter

TwisterFanatic · #131 Postby **TwisterFanatic** » Fri Apr 13, 2012 4:04 pm

TORNADO ON THE GROUND.. POWER FLASHES

#132 Postby **MGC** » Fri Apr 13, 2012 4:06 pm

I saw an F-3 that hit Moore OK in 2003 nearly in the same spot the May 1999 F-5 hit.....MGC

#133 Postby **brunota2003** » Fri Apr 13, 2012 4:08 pm

Norman, OK under the gun currently...TVS on that cell.

#134 Postby **MGC** » Fri Apr 13, 2012 4:08 pm

TwisterFanatic.....what TV channel you watching? Gary England?....MGC

TwisterFanatic · #135 Postby **TwisterFanatic** » Fri Apr 13, 2012 4:10 pm

MGC wrote:TwisterFanatic.....what TV channel you watching? Gary England?....MGC

Yes, they're streaming on the internet.

http://www.news9.com/

#136 Postby **Tireman4** » Fri Apr 13, 2012 4:11 pm

http://www.news9.com/Global/category.as ... nnerId=436

Bunkertor · #137 Postby **Bunkertor** » Fri Apr 13, 2012 4:12 pm

9z was a pretty early time for a TorWatch as well.

#138 Postby **brunota2003** » Fri Apr 13, 2012 4:13 pm

brunota2003 wrote:Norman, OK under the gun currently...TVS on that cell.

Couplet is only 640 feet off the ground (that's how close to the radar site it is!)

#139 Postby **CrazyC83** » Fri Apr 13, 2012 4:14 pm

Right over downtown Norman.

#140 Postby **MGC** » Fri Apr 13, 2012 4:17 pm

Looks like the tornado will pass very close to OU....I bet a bunch of met students are out looking at the sky right now.....MGC

Plains Tornado Outbreak 4/14-15

Re: Plains Tornado Outbreak on 4/12-16 (High Risk for Sat)

Re: Plains Tornado Outbreak on 4/12-16 (High Risk for Sat)

Re: Plains Tornado Outbreak on 4/12-16 (High Risk for Sat)

Re: Plains Tornado Outbreak on 4/12-16 (High Risk for Sat)

Re:

Re: Plains Tornado Outbreak on 4/12-16 (High Risk for Sat)

Re: Plains Tornado Outbreak on 4/12-16 (High Risk for Sat)

Re: Plains Tornado Outbreak on 4/12-16 (High Risk for Sat)

Re: Plains Tornado Outbreak on 4/12-16 (High Risk for Sat)

Re: Plains Tornado Outbreak on 4/12-16 (High Risk for Sat)

Re:

Re: Plains Tornado Outbreak on 4/12-16 (High Risk for Sat)

Who is online