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
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