SPC Severe Weather Watches
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 406
STORM PREDICTION CENTER NORMAN OK
1137 AM EDT FRI JUN 2 2000
THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR
PORTIONS OF
MUCH OF NEW YORK
WESTERN AND NORTHERN PENNSYLVANIA
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM NOON EDT UNTIL 600 PM
EDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND
DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 85 STATUTE MILES NORTH
AND SOUTH OF A LINE FROM 15 MILES WEST NORTHWEST OF PITTSBURGH
PENNSYLVANIA TO 75 MILES EAST SOUTHEAST OF UTICA 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.
DISCUSSION...THUNDERSTORMS WILL CONTINUE TO INCREASE AND INTENSIFY AS
COLD FRONT ADVANCES INTO REGION OF 2000 TO 3000 J/KG MUCAPES. STRONG
FLOW AND DRY AIR AT MID LEVELS INDICATE PRIMARY THREAT OF DAMAGING
DOWNDRAFTS/BOW ECHOES AND LARGE HAIL.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2
INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW
CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 27040.
...ROGASH
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 407
STORM PREDICTION CENTER NORMAN OK
1245 PM EDT FRI JUN 2 2000
THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR
PORTIONS OF
MUCH OF OHIO
THE PANHANDLE OF WEST VIRGINIA
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 100 PM UNTIL 700 PM
EDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND
DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 65 STATUTE MILES NORTH
AND SOUTH OF A LINE FROM 35 MILES WEST SOUTHWEST OF DAYTON OHIO TO 35
MILES SOUTH SOUTHEAST OF YOUNGSTOWN OHIO.
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... CONTINUE...WW 406...
DISCUSSION...THUNDERSTORMS INCREASING RAPIDLY OVER WATCH AREA AS COLD
FRONT APPROACHES INSTABILITY/MOISTURE AXIS WHERE MUCAPES FROM 2000 TO
3000 J/KG. WIND PROFILES SHOWING UNIDIRECTIONAL BUT STRONG SPEED SHEAR
INDICATING POTENTIAL FOR DAMAGING WINDS AND LARGE HAIL.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2
INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW
CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 27040.
...ROGASH
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 408
STORM PREDICTION CENTER NORMAN OK
258 PM EDT FRI JUN 2 2000
THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR
PORTIONS OF
ALL OF CONNECTICUT
MOST OF MASSACHUSETTS
SOUTHWESTERN MAINE
SOUTHERN NEW HAMPSHIRE
NORTHEASTERN NEW JERSEY
EASTERN NEW YORK INCLUDING LONG ISLAND
ALL OF RHODE ISLAND
SOUTHERN VERMONT
COASTAL WATERS
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 315 PM UNTIL 900 PM
EDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND
DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 90 STATUTE MILES EAST
AND WEST OF A LINE FROM 35 MILES SOUTHEAST OF ISLIP NEW YORK TO 15 MILES
NORTH OF LEBANON NEW HAMPSHIRE.
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... CONTINUE...WW 406...WW 407...
DISCUSSION...THUNDERSTORMS WILL INCREASE OVER REGION AS LOW LEVEL
MOISTURE AND THERMAL ADVECTION RESULTS IN INCREASING INSTABILITY.
STRENGTHENING SPEED SHEAR AND COOL DRY AIR AT MID LEVELS INDICATE
PRIMARY THREAT OF DAMAGING WINDS AND LARGE HAIL.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2
INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW
CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 24035.
...ROGASH
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 409
STORM PREDICTION CENTER NORMAN OK
438 PM EDT FRI JUN 2 2000
THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR
PORTIONS OF
THE PANHANDLE OF MARYLAND
NORTHWESTERN NEW JERSEY
SOUTHEASTERN NEW YORK
SOUTHWESTERN...CENTRAL AND NORTHEASTERN PENNSYLVANIA
NORTHERN WEST VIRGINIA
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 515 PM UNTIL 1000 PM
EDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND
DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 50 STATUTE MILES NORTH
AND SOUTH OF A LINE FROM 40 MILES WEST NORTHWEST OF ELKINS WEST VIRGINIA
TO 40 MILES EAST NORTHEAST OF MONTICELLO 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 406. WATCH NUMBER 406 WILL NOT BE IN EFFECT
AFTER 515 PM EDT. CONTINUE...WW 407...WW 408...
DISCUSSION...LINE OF SEVERE THUNDERSTORMS...WITH A HISTORY OF WIND
DAMAGE AND LARGE HAIL...MOVING INTO WATCH AREA WHERE AIR MASS VERY
UNSTABLE WITH CAPES NEAR 3000 J/KG. STRONG FLOW AND COOL DRY AT MID
LEVELS INDICATE A CONTINUED THREAT OF WIND DAMAGE AND LARGE HAIL.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2
INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW
CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 26035.
...ROGASH
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 410
STORM PREDICTION CENTER NORMAN OK
510 PM EDT FRI JUN 2 2000
THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR
PORTIONS OF
EASTERN KENTUCKY
SOUTHERN OHIO
WEST VIRGINIA
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 530 PM UNTIL 1100 PM
EDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND
DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 45 STATUTE MILES NORTH
AND SOUTH OF A LINE FROM 90 MILES WEST OF HUNTINGTON WEST VIRGINIA TO 50
MILES EAST SOUTHEAST OF PARKERSBURG WEST VIRGINIA.
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 407. WATCH NUMBER 407 WILL NOT BE IN EFFECT
AFTER 530 PM EDT. CONTINUE...WW 406...WW 408...WW 409...
DISCUSSION...LINE STRONG/SEVERE THUNDERSTORMS FROM NRN KY ENEWD ACROSS
SRN OH WILL CONTINUE TO PROPAGATE E/SE INTO MODERATELY UNSTABLE AIRMASS.
CAPES TO 3000 J/KG WILL COMPENSATE FOR THE MARGINAL SHEAR TO MAINTAIN
THREAT OF LOCAL DAMAGING WINDS AND LARGE HAIL UNTIL AT LEAST SUNSET.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2
INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW
CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 26030.
...HALES
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 411
STORM PREDICTION CENTER NORMAN OK
620 PM EDT FRI JUN 2 2000
THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR
PORTIONS OF
DISTRICT OF COLUMBIA
NORTHERN DELAWARE
MARYLAND
NEW JERSEY
SOUTHEASTERN PENNSYLVANIA
NORTHERN VIRGINIA
NORTHERN CHESAPEAKE BAY
EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 700 PM UNTIL
MIDNIGHT EDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND
DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 45 STATUTE MILES NORTH
AND SOUTH OF A LINE FROM 40 MILES WEST NORTHWEST OF WASHINGTON DC TO 25
MILES EAST NORTHEAST OF TRENTON NEW JERSEY.
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... CONTINUE...WW 407...WW 408...WW
409...WW 410...
DISCUSSION...LINE OF STRONG SEVERE THUNDERSTORMS CONTINUE TO DEVELOP
E/SE INTO A VERY UNSTABLE AIRMASS ACROSS ERN MD INTO NJ. SHEAR PROFILES
ARE FAVORABLE FOR SEVERE THUNDERSTORMS CONTINUING UNTIL AFTER SUNSET.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2
INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW
CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 26035.
...HALES
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 412
STORM PREDICTION CENTER NORMAN OK
709 PM EDT FRI JUN 2 2000
THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR
PORTIONS OF
SOUTHERN DELAWARE
MARYLAND
SOUTHERN NEW JERSEY
EASTERN VIRGINIA
CHESAPEAKE BAY
COASTAL WATERS
EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 745 PM UNTIL
MIDNIGHT EDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND
DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 40 STATUTE MILES NORTH
AND SOUTH OF A LINE FROM 35 MILES NORTHWEST OF RICHMOND VIRGINIA TO 50
MILES EAST OF DOVER DELAWARE.
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... CONTINUE...WW 408...WW 409...WW
410...WW 411...
DISCUSSION...SEVERE THUNDERSTORMS HAVE DEVELOPED ACROSS DC ON LOW LEVEL
SURFACE TROUGH. VERY UNSTABLE AIRMASS IN PLACE OVER ERN VA WITH CAPES
APPROACHING 5000 J/KG. STORMS WILL PROPAGATE SEWD INTO THIS
AIRMASS...WITH SHEAR PROFILES SUFFICIENT GIVEN AMOUNT OF INSTABILITY TO
SUPPORT ISOLATED SUPERCELLS...ENHANCING WIND AND HAIL THREAT.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2
INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW
CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION VECTOR 29020.
...HALES
