

678 

WWUS20 KWNS 182253

SEL8

SPC WW 182253

MSZ000-190400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 128

NWS STORM PREDICTION CENTER NORMAN OK

555 PM CDT THU APR 18 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  PARTS OF NORTHERN MISSISSIPPI



* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 555 PM UNTIL

  1100 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES POSSIBLE

  A FEW DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  A FEW LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE

MILES EAST AND WEST OF A LINE FROM 20 MILES NORTHWEST OF TUPELO

MISSISSIPPI TO 45 MILES SOUTH SOUTHEAST OF OXFORD MISSISSIPPI.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU8).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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 126...WW 127...



DISCUSSION...BAND OF STORMS WITH EMBEDDED SUPERCELLS ACROSS W

CENTRAL MS WILL CONTINUE TO MOVE EWD/NEWD THROUGH THE EVENING.

THOUGH INSTABILITY IS STRONGEST ACROSS CENTRAL/SRN MS...THE NRN EDGE

OF THE STRONGER STORMS WILL LIKELY SPREAD A FEW COUNTIES TO THE N

AND IMPACT PARTS OF NRN MS.  GIVEN THE PRESENCE OF WEAK-MODERATE

INSTABILITY AND BOUNDARY LAYER DEWPOINTS IN THE LOW 60S...THE

STRONGEST STORMS COULD PRODUCE A COUPLE OF TORNADOES...DAMAGING

GUSTS...AND ISOLATED LARGE HAIL.



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

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 25035.





...THOMPSON

