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497 

WWUS20 KWNS 220537

SEL8

SPC WW 220537

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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH - NUMBER 18

NWS STORM PREDICTION CENTER NORMAN OK

1137 PM CST SAT JAN 21 2017



THE NWS STORM PREDICTION CENTER HAS CANCELLED

TORNADO WATCH NUMBER 18 ISSUED AT 745 PM CST FOR PORTIONS OF



         ARKANSAS

         LOUISIANA

         MISSISSIPPI

