MD 0070 CONCERNING TORNADO WATCH 6… FOR PORTIONS OF CNTRL/SWRN MO…NWRN AR…NERN OK…EXTREME SERN KS
MESOSCALE DISCUSSION 0070
NWS STORM PREDICTION CENTER NORMAN OK
1105 AM CST TUE JAN 29 2013
AREAS AFFECTED...PORTIONS OF CNTRL/SWRN MO...NWRN AR...NERN
OK...EXTREME SERN KS
CONCERNING...TORNADO WATCH 6...
VALID 291705Z - 291800Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 6 CONTINUES.
SUMMARY...THE THREAT FOR SVR THUNDERSTORMS INCLUDING DMGG WINDS AND
TORNADOES CONTINUES ACROSS WW6.
DISCUSSION...A SQUALL LINE WITH EMBEDDED BOWING SEGMENTS EXTENDS
FROM CNTRL MO SWWD INTO S-CNTRL OK AS OF 17Z. AHEAD OF THE
LINE...MARGINAL INSTABILITY EXISTS AMIDST STRONG VERTICAL
SHEAR...WITH 0-1-KM SRH AROUND 425 M2/S2 AND OVER 60 KT OF DEEP
SHEAR PER SGF VWP. THIS WILL MAINTAIN ORGANIZED STORM STRUCTURES --
BOWS AND PERHAPS SUPERCELLS -- EMBEDDED WITHIN THE LINE. THESE WILL
BE CAPABLE OF DMGG WINDS AND TORNADOES...ESPECIALLY WITH CONVECTION
NOT UNDERCUT BY THE OUTFLOW BOUNDARY ACCOMPANYING THE SQUALL LINE.
ADDITIONAL CONVECTION IS DEVELOPING AHEAD THE LINE ACROSS NERN
OK...NWRN AR...AND SWRN MO INVOF RICHER LOW-LEVEL MOISTURE -- I.E.
LOWER 60S DEWPOINTS. IN THIS AREA...THE TORNADO THREAT WOULD
INCREASE IF THESE STORMS BECOME SFC BASED AND EXHIBIT SEMI-DISCRETE
CONVECTIVE MODES. THE SVR THREAT WILL BE NIL BEHIND THE SQUALL LINE.
..COHEN.. 01/29/2013
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LSX...LZK...SGF...EAX...TSA...ICT...OUN...
LAT...LON 38919339 38369221 37589240 36599318 35759366 35379438
35399669 36759547 38919339
via SPC Forecast Products http://www.spc.noaa.gov/products/md/md0070.html
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