

000 

WWUS20 KWNS 152126

SEL7

SPC WW 152126

INZ000-KYZ000-OHZ000-160200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 77

NWS STORM PREDICTION CENTER NORMAN OK

530 PM EDT THU MAR 15 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EXTREME EASTERN INDIANA

       NORTHERN KENTUCKY

       WESTERN OHIO



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 530 PM UNTIL

1000 PM EDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40

STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH OF

DAYTON OHIO TO 55 MILES SOUTH SOUTHWEST OF CINCINNATI OHIO.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 75...WW 76...



DISCUSSION...SCATTERED THUNDERSTORMS OVER SOUTHERN IN AND KY WILL

SPREAD EASTWARD INTO WESTERN OH THIS EVENING.  STEEP LAPSE RATES AND

COOL TEMPERATURES ALOFT...COMBINED WITH A MOIST BOUNDARY

LAYER...WILL PROMOTE VIGOROUS UPDRAFTS AND THE POTENTIAL FOR HAIL IN

THE STRONGER STORMS.  EASTWARD PROGRESS OF THE ACTIVITY IS EXPECTED

TO BE LIMITED AS STORMS INTERACT WITH A MORE STABLE AIR MASS OVER

CENTRAL/EASTERN OH LATER THIS EVENING.



AVIATION...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 24025.





...HART



231 

WWUS20 KWNS 152126

SEL7

SPC WW 152126

INZ000-KYZ000-OHZ000-160200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 77

NWS STORM PREDICTION CENTER NORMAN OK

530 PM EDT THU MAR 15 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EXTREME EASTERN INDIANA

       NORTHERN KENTUCKY

       WESTERN OHIO



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 530 PM UNTIL

1000 PM EDT.



HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40

STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH OF

DAYTON OHIO TO 55 MILES SOUTH SOUTHWEST OF CINCINNATI OHIO.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 75...WW 76...



DISCUSSION...SCATTERED THUNDERSTORMS OVER SOUTHERN IN AND KY WILL

SPREAD EASTWARD INTO WESTERN OH THIS EVENING.  STEEP LAPSE RATES AND

COOL TEMPERATURES ALOFT...COMBINED WITH A MOIST BOUNDARY

LAYER...WILL PROMOTE VIGOROUS UPDRAFTS AND THE POTENTIAL FOR HAIL IN

THE STRONGER STORMS.  EASTWARD PROGRESS OF THE ACTIVITY IS EXPECTED

TO BE LIMITED AS STORMS INTERACT WITH A MORE STABLE AIR MASS OVER

CENTRAL/EASTERN OH LATER THIS EVENING.



AVIATION...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 24025.





...HART

