Memorial Day Weekend Outbreak 2008

[Ed Mahmoud]

Impressive hook on Decatur County, KS cell, should pass East of McCook, NE...

[CrazyC83]

Hard to keep track at this point...

[wbug1]

huge TVS and heavy rain in a train approaching Hill City, KS

[CrazyC83]

MESOSCALE DISCUSSION 0976
NWS STORM PREDICTION CENTER NORMAN OK
0646 PM CDT THU MAY 22 2008

AREAS AFFECTED...NEB...KS...OK...TX

CONCERNING...TORNADO WATCH 335...336...337...

VALID 222346Z - 230045Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH
335...336...337...CONTINUES.

LATE AFTERNOON/EARLY EVENING SURFACE ANALYSIS SHOWED AN AREA OF LOW
PRESSURE LOCATED OVER NORTH CENTRAL CO WITH A WARM FRONT EXTENDING
ESEWD ACROSS NWRN KS THROUGH NRN KS TO CENTRAL MO. DRY LINE...AIDED
BY STRONG SSWLY GRADIENT WINDS...HAD SHIFTED EWD INTO NERN CO AT
INTERSECTION WITH WARM FRONT AND THEN EXTENDED SWD THROUGH WRN KS TO
THE ERN TX PANHANDLE.

...WW/S 335 AND 337...
MOIST/MODERATELY UNSTABLE WARM SECTOR COMBINED WITH 40-60 KT OF SWLY
EFFECTIVE BULK SHEAR VECTORS REMAINS CONDUCIVE FOR TORNADIC
SUPERCELLS THROUGH THE EARLY EVENING. LATEST OBJECTIVE ANALYSES
INDICATED VERY STRONG EFFECTIVE SRH VALUES /300-600 M2/S2/ EXTENDING
FROM NWRN KS THROUGH SWRN NEB TO NERN CO...ALONG NOSE OF 40 KT SSELY
LLJ...AND BACKED LOWER LEVEL WINDS IN VICINITY OF THE WARM FRONT.
THIS WILL SUPPORT A CONTINUED TORNADO THREAT ACROSS MUCH OF WW 335
AND 337...INCLUDING THOSE REGIONS JUST N OF THE WARM FRONT WHERE
EFFECTIVE PARCELS REMAIN SURFACE BASED.

...WW 336...
ASCENT ATTENDANT TO SRN EXTENT OF SHORT WAVE TROUGH...NOW CENTERED
OVER THE CENTRAL HIGH PLAINS OF NERN CO/WRN NEB...WILL CONTINUE TO
SUPPORT TSTM DEVELOPMENT ALONG THE SRN EXTENT OF THE DRY LINE.
MODERATE-STRONG INSTABILITY COMBINED WITH EFFECTIVE BULK SHEAR OF
40-50 KT AND EFFECTIVE SRH VALUES OF 100-200 M2/S2 REMAIN VERY
FAVORABLE FOR TORNADIC SUPERCELLS ACROSS FAR ERN TX PANHANDLE INTO
WRN OK. PARTICULAR CONCERN EXISTS WITH THE DEVIANT MOVING /EWD
STORM MOTION/ OF THE SUPERCELL NOW LOCATED OVER ROGER MILLS COUNTY
WHERE PARAMETERS ARE VERY FAVORABLE FOR TORNADOES.

FARTHER S OF THE ROGER MILLS SUPERCELL...WEAKER ASCENT WITH SWD
EXTENT ALONG VORTICITY LOBE APPEARS TO BE LIMITING CONVECTIVE
DEVELOPMENT INTO NW TX AT THIS TIME. IF THIS TREND CONTINUES...SRN
PARTS OF WW 336 MAY BE CANCELLED PRIOR TO WATCH EXPIRATION OF 03Z.

..PETERS.. 05/22/2008


ATTN...WFO...ICT...OUN...GID...LBF...DDC...GLD...LUB...AMA...PUB...BOU...

41020019 41059870 39109852 38749899 38209850 36989827
36149809 33479801 33400054 34480099 37750115 38290207
40390204 41390210 41370026

[wbug1]

Impressive hook on Decatur County, KS cell, should pass East of McCook, NE...

Yup, that's a strong TVS. Large as well.

[Bunkertor]

http://data.ksn.com/video/radarstream.html

[CrazyC83]

KSN: Large and violent tornado near Oberlin

[Texas Snowman]

Guess we're closing in on 30 tornado reports and the evening is still young.

What constitutes an "outbreak"?

[wbug1]

That cell that passed through strong city, OK is a big, slow moving hail and rain dropper even if it doesn't have a tornado. It continues to a show a TVS though no associated tornado report. The TVS is quite strong.

[Bunkertor]

Guess we're closing in on 30 tornado reports and the evening is still young.

What constitutes an "outbreak"?

Todays results are enough to define an outbreak. I think we´ll end at 50 when survey team´s work is finished

Edith means : 31 now

[Bunkertor]

That´s worth an extra posting

989
WFUS56 KSGX 230018
TORSGX
CAC065-230045-
/O.NEW.KSGX.TO.W.0003.080523T0016Z-080523T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
516 PM PDT THU MAY 22 2008

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A

* TORNADO WARNING FOR...
WEST CENTRAL RIVERSIDE COUNTY IN SOUTHWEST CALIFORNIA...

* UNTIL 545 PM PDT

* AT 513 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER WEST
CENTRAL RIVERSIDE COUNTY...OR 3 MILES SOUTHEAST OF WOODCREST...
MOVING SOUTHWEST AT 15 MPH.

* THE TORNADO WILL BE NEAR...
RURAL WESTERN RIVERSIDE COUNTY AT 530 PM PDT

DO NOT USE HIGHWAY OVERPASSES FOR SHELTER. OVERPASSES DO NOT PROVIDE
PROTECTION FROM TORNADIC WINDS. VEHICLES STOPPED UNDER BRIDGES BLOCK
TRAFFIC AND PREVENT PEOPLE FROM GETTING OUT OF THE STORM'S PATH AND
TO SHELTER. IF YOU CANNOT DRIVE AWAY FROM THE TORNADO...GET OUT OF
YOUR VEHICLE AND LIE FLAT IN A DITCH AS A LAST RESORT.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3377 11734 3371 11745 3378 11755 3385 11759
3390 11727 3385 11725
TIME...MOT...LOC 0016Z 067DEG 10KT 3385 11734

[Texas Snowman]

With that last warning, tornadoes moving northwest and southwest today - wow.

Tx Snmn

[wbug1]

2 tornado warnings there. Can't see it on base radar but on composite. Direction of movement south or west, NWS doesn't know which way it's moving. Say SW? Located right near Riverside, CA.

[RL3AO]

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
543 PM PDT THU MAY 22 2008

CAC065-230100-
/O.CON.KSGX.TO.W.0004.000000T0000Z-080523T0100Z/
RIVERSIDE CA-
543 PM PDT THU MAY 22 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM PDT FOR WEST
CENTRAL RIVERSIDE COUNTY...

AT 539 PM PDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD
OVER INTERSTATE 15 NEAR LAKE ELSINORE...MOVING WEST AT 8 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LAKE
ELSINORE AND LAKELAND VILLAGE.

[Cyclenall]

How many tornadoes have been confirmed? This has been pretty amazing, many warnings out at once.

[Ed Mahmoud]

KNX radio link- public reports touchdowns in Moreno Valley

[Category 5]

Heres a photo.

http://abclocal.go.com/kabc/story?secti ... id=6160384

[CrazyC83]

32 tornado reports so far - no ratings yet.

[Bunkertor]

*off topic*

Sorry - no direct link. 125th brooklyn bridge fireworks http://www.cnn.com/

[CrazyC83]

Tornado warning - south of Greensburg