WATCHES: Severe Thunderstorm Watch Number 18

WWUS20 KWNS 210222
SEL8
SPC WW 210222
INZ000-OHZ000-210900-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 18
NWS STORM PREDICTION CENTER NORMAN OK
920 PM EST THU FEB 20 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHEAST INDIANA
NORTHERN AND WESTERN OHIO

* EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 920 PM
UNTIL 400 AM EST.

* PRIMARY THREATS INCLUDE...
SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 55
STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES NORTHWEST OF
TOLEDO OHIO TO 35 MILES SOUTHWEST OF DAYTON OHIO. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU8).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 11...WW 14...WW 15...WW
16...WW 17...

DISCUSSION...NRN END OF COLD FRONTAL SQLN NOW E IND EXPECTED TO
CONTINUE NNEWD INTO NW OH LATER TNGT AS MID-LVL FLOW CONTINUES TO
BACK AND STRENGTHEN AHEAD OF POTENT MIDWESTERN SHORTWAVE TROUGH.
AREA SFC AND VWP DATA...MEANWHILE...SHOW SUBSTANTIAL LOW-LVL WLY
COMPONENT TO WINDS BEHIND COLD FRONT IN NRN IND. COUPLED WITH
INCREASING FORCING FOR ASCENT AND STRENGTHENING OF DEEP WIND
FIELD...SETUP APPEARS SUPPORTIVE OF SPORADIC DMGG SFC
GUSTS...DESPITE SHALLOW BOUNDARY LAYER INVERSION/SNOW COVER OVER
REGION.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 350. MEAN STORM
MOTION VECTOR 23055.


...CORFIDI

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