Public Information Statement
Issued by NWS Upton, NY

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PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
702 AM EDT THU APR 30 2015

...THIS IS SEVERE WEATHER AWARENESS WEEK...

THE NATIONAL WEATHER SERVICE IN PARTNERSHIP WITH SEVERAL AGENCIES
INCLUDING THE NY STATE DISASTER PREPAREDNESS COMMISSION IS PROMOTING
SEVERE WEATHER SAFETY FOR ALL PEOPLE.

THIS STATEMENT COVERS TORNADOES IN THE TRI STATE AREA.

A TORNADO IS A RAPIDLY ROTATING COLUMN OF AIR...EXTENDING DOWN
FROM A CLOUD WITH A CIRCULATION THAT REACHES THE GROUND.

TORNADOES DEVELOP FROM SEVERE THUNDERSTORMS. CLIMATOLOGICALLY...THEY
OCCUR MOST FREQUENTLY DURING THE LATE AFTERNOON AND EARLY EVENING
FROM JUNE THROUGH AUGUST. HOWEVER...THEY CAN OCCUR AT ANYTIME OF
DAY. THEY OFTEN DEVELOP AND DISSIPATE RAPIDLY.

THEIR INTENSITIES ARE USUALLY WEAK IN OUR REGION...EF 0 AND EF 1 ON
THE ENHANCED FUJITA SCALE...REPRESENTING WIND SPEEDS FROM 65 TO  110
MPH. THEIR PATH LENGTH AND WIDTH ARE USUALLY SMALL IN OUR AREA AS
WELL. MOST WEAK TORNADOES OCCUR WITHIN AREAS OF RAIN... MAKING THEM
DIFFICULT TO SPOT.

HOWEVER...THE AREA ON OCCASION DOES EXPERIENCE A SIGNIFICANT
TORNADO...ONE RATING EF 2 OR HIGHER ON THE ENHANCED FUJITA SCALE.
THE STRONGEST TORNADO TO IMPACT THE TRI-STATE WAS AN F4 TORNADO WITH
ESTIMATED WINDS OF 207-260 MPH IN HAMDEN CONNECTICUT ON JULY 10
1989. THE LAST TIME THERE WAS AN EF 2 TORNADO IN THE TRI-STATE WAS
ON AUGUST 8 2007...WHEN AN EF2 TORNADO...WITH ESTIMATED WINDS OF
111 TO 135 MPH...MOVED THROUGH THE BAY RIDGE SECTION OF BROOKLYN.

THE NUMBER OF TORNADOES CONFIRMED BY THE NWS SINCE 1950...

FOR SOUTHEAST NEW YORK...

22 IN SUFFOLK COUNTY
12 IN NEW YORK CITY
11 IN ORANGE COUNTY
 9 IN WESTCHESTER COUNTY
 8 IN NASSAU COUNTY
 4 IN PUTNAM COUNTY AND
 2 IN ROCKLAND COUNTY.

FOR NORTHEAST NEW JERSEY...

13 IN UNION COUNTY
 9 IN BERGEN COUNTY
 3 IN PASSAIC COUNTY
 2 IN ESSEX COUNTY AND
 1 IN HUDSON COUNTY.

FOR SOUTHERN CONNECTICUT...

15 IN FAIRFIELD COUNTY
15 IN NEW HAVEN COUNTY
8 IN MIDDLESEX COUNTY AND
2 IN NEW LONDON COUNTY.

THE NWS STORM PREDICTION CENTER IN NORMAN OKLAHOMA ISSUES TORNADO
WATCHES...WITH A LEAD TIME OF UP TO SIX HOURS. A TORNADO WATCH MEANS
THAT WEATHER CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF
TORNADOES IN AND AROUND A DEFINED AREA.

OUR NWS OFFICE IN LONG ISLAND NY ISSUES TORNADO WARNINGS FOR...11
SOUTHEAST NY COUNTIES COVERING THE LOWER HUDSON VALLEY...NEW YORK
CITY AND LONG ISLAND...5 NORTHEAST NEW JERSEY COUNTIES AND 4
SOUTHERN CONNECTICUT COUNTIES. OUR OFFICE USES A COMBINATION OF
WEATHER RADAR AND OBSERVATIONS FROM LAW ENFORCEMENT AND VOLUNTEER
SKYWARN SPOTTERS TO ISSUE WARNINGS. TAKE IMMEDIATE PROTECTIVE ACTION
TO SAVE YOUR LIFE.

TOMORROW WE WILL COVER FLASH FLOODS.

$$



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