Severe Thunderstorm Watch 710

Issued

Jun 30, 1998, 1:30 PM EDT (17:30 UTC)

Expired

Jun 30, 1998, 8:00 PM EDT

In force

7 hr

Issued by

the Storm Prediction Center

142 
WWUS9 KMKC 301720 COR
SEL0
MKC WW 301707
OHZ000-PAZ000-NYZ000-LEZ000-LOZ000-010000-

URGENT- IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 710
STORM PREDICTION CENTER NORMAN OK
107 PM EDT TUE JUN 30 1998   ..COR TO INCLUDE WV..

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   EASTERN OHIO
   WESTERN AND CENTRAL PENNSYLVANIA
   WESTERN AND CENTRAL NEW YORK
   THE NORTHERN WEST VIRGINIA PANHANDLE
   EASTERN LAKE ERIE
   SOUTHERN LAKE ONTARIO

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 130 PM UNTIL 800
PM EDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 95 STATUTE MILES
EAST AND WEST OF A LINE FROM 35 MILES SOUTH SOUTHWEST OF WHEELING
WEST VIRGINIA TO 25 MILES NORTH NORTHWEST OF ROCHESTER NEW YORK.

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.

OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES
SEVERE THUNDERSTORM WATCH NUMBER 710.  WATCH NUMBER 710 WILL NOT BE
IN EFFECT AFTER 130 PM EDT.

DISCUSSION...LARGE SCALE ASCENT ASSOCIATED WITH SHORTWAVE TROUGH
ROTATING AROUND ONTARIO UPPER LOW...ALONG WITH CONTINUED DAYTIME
HEATING...EXPECTED TO RESULT IN ADDITIONAL DESTABILIZATION AND
STORM DEVELOPMENT OVER THE ERN GREAT LAKES.  COMBINATION OF
MODERATE SURFACE-BASED INSTABILITY AND SEASONABLY STRONG SHEAR
/MID-LEVEL WINDS IN EXCESS OF 45 KTS/ SUFFICIENT FOR LARGE HAIL/
DAMAGING BOWS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 480.  MEAN STORM
MOTION VECTOR 29035.

...CORFIDI

394,0824 432,0794 432,0755 394,0790

Severe Thunderstorm Watches in Pennsylvania, 1998Severe Thunderstorm Watches in Ohio, 1998Severe Thunderstorm Watches in New York, 1998Every severe thunderstorm watch in 1998

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.