

789 

WWUS20 KWNS 072338

SEL1

SPC WW 072338

KSZ000-OKZ000-080700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 871

NWS STORM PREDICTION CENTER NORMAN OK

540 PM CST MON NOV 7 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHEAST KANSAS

       NORTHEAST OKLAHOMA



EFFECTIVE THIS MONDAY AFTERNOON AND TUESDAY MORNING FROM 540 PM

UNTIL 100 AM CST.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH OF CHANUTE

KANSAS TO 20 MILES WEST OF TULSA OKLAHOMA.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU1).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...CONTINUE...WW 870...



DISCUSSION...NRN END OF N CNTRL OK SQLN WITH EMBEDDED

SUPERCELLS/SMALLER SCALE CIRCULATIONS EXPECTED TO CONTINUE SLOWLY

EWD THROUGH LATE TNGT...WHILE STORMS MOVE MORE RAPIDLY NNE ALONG IT.

LOW LVL LAPSE RATES WILL REMAIN WEAK.  BUT STRENGTHENING LOW LVL

WIND FIELD ASSOCIATED BOTH WITH DIURNAL CYCLE AND WITH APPROACH OF

NM UPR VORT SUGGEST POTENTIAL FOR LOCALLY DMGG WIND AND ISOLD

TORNADOES AS BOUNDARY LAYER MOISTURE CONTINUES TO SLOWLY INCREASE

ACROSS REGION.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.

MEAN STORM MOTION VECTOR 23035.





...CORFIDI

