MESOSCALE DISCUSSION 2380
   NWS STORM PREDICTION CENTER NORMAN OK
   1045 PM CDT FRI OCT 29 2004
   
   AREAS AFFECTED...WRN AND CENTRAL WI
   
   CONCERNING...TORNADO WATCH 873...
   
   VALID 300345Z - 300445Z
   
   LINE OF THUNDERSTORMS CONTINUES MOVING EWD ACROSS CENTRAL PORTIONS
   OF WW 873.  NEW SEVERE THUNDERSTORM WATCH WILL BE ISSUED DOWNSTREAM
   OF THIS WATCH FOR PORTIONS OF WI AND NRN IL.
   
   LINE OF STORMS -- WITH EMBEDDED BOWS AND LEWPS -- CONTINUES SHIFTING
   RAPIDLY EWD ACROSS WW ATTM.  INDIVIDUAL LINE SEGMENTS / BOWS ARE
   MOVING NEWD AT NEAR 50 KT...AND EXTRAPOLATION OF OVERALL LINE MOTION
   SHOWS STORMS EXITING WW BETWEEN 30/0430 AND 05Z.
   
   AIRMASS REMAINS MOIST AND MARGINALLY UNSTABLE AHEAD OF LINE...WITH
   GREATEST INSTABILITY /500 TO 1000 J/KG MEAN-LAYER CAPE/ INDICATED
   ACROSS THE SERN QUARTER OF WI INTO NRN IL.  GIVEN STRENGTH OF UPPER
   SYSTEM AND ASSOCIATED DEEP-LAYER WIND FIELD...IS APPEARS THAT
   DAMAGING WIND THREAT WILL PERSIST BEYOND 30/05Z.  THEREFORE...NEW WW
   WILL BE ISSUED SHORTLY DOWNSTREAM OF WW 873.
   
   ..GOSS.. 10/30/2004
   
   
   ATTN...WFO...MQT...GRB...LOT...ILX...MKX...DVN...ARX...
   
   46408993 46408905 45058782 42588784 41288767 40939073
   42198995 43369033 45118985