Public Information Statement
Issued by NWS Albany, NY

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NOUS41 KALY 301200
PNSALY

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE ALBANY NY
800 AM EDT THU APR 30 2015

...SEVERE WEATHER AWARENESS WEEK CONTINUES...

APRIL 26 TO MAY 2 IS SEVERE WEATHER AWARENESS WEEK IN NEW YORK...
CONNECTICUT...VERMONT...AND MASSACHUSETTS. ALL RESIDENTS ARE URGED
TO BE WEATHER READY BY PROTECTING THEMSELVES FROM THE HAZARDS OF
FLOODING...TORNADOES...AND SEVERE THUNDERSTORMS.

TODAY WE TAKE AN IN DEPTH LOOK AT TORNADOES AND CONDUCT OUR NEW
YORK SEVERE WEATHER COMMUNICATION DRILL AT 115 PM. OUR REGION
AVERAGES ABOUT FIVE TORNADOES PER YEAR. TORNADOES HAVE OCCURRED IN
NEW YORK AND WESTERN NEW ENGLAND DURING EVERY SEASON BUT ARE MOST
COMMON BETWEEN MAY AND AUGUST. TORNADOES CAN STRIKE ANYWHERE...
VALLEYS AND MOUNTAINS...CITIES...AND RURAL AREAS. TORNADOES ARE MOST
COMMON IN THE AFTERNOON AND EVENING...BUT OCCUR AT ALL HOURS.

TORNADOES ARE VIOLENTLY ROTATING COLUMNS OF AIR IN CONTACT WITH
THE GROUND AND ATTACHED TO THE CLOUD ABOVE. THE STRONGEST
TORNADOES HAVE WIND SPEEDS IN EXCESS OF 200 MPH...WIDTHS
APPROACHING ONE MILE...LENGTHS OF MANY MILES...AND DURATIONS OF UP
TO ONE HOUR. FORTUNATELY...MOST TORNADOES ARE CONSIDERABLY WEAKER
AND OF SHORTER DURATION. TORNADOES TYPICALLY MOVE AT ABOUT 30
MPH...BUT CAN MOVE AS FAST AS 70 MPH. IN NEW YORK AND NEW
ENGLAND...ABOUT 77 PERCENT OF ALL TORNADOES ARE WEAK...21 PERCENT
STRONG...AND ONLY ABOUT TWO PERCENT ARE CONSIDERED VIOLENT.

TORNADOES FORM IN AN ENVIRONMENT CONDUCIVE TO THUNDERSTORM
DEVELOPMENT. WINDS CHANGING DIRECTION AND SPEED WITH HEIGHT
PRODUCE A HORIZONTAL SPINNING IN THE ATMOSPHERE. STRONG UPWARD
MOTIONS IN THUNDERSTORMS TILT THE HORIZONTAL ROTATION TO THE
VERTICAL. AN AREA OF ROTATION NOW TWO TO SIX MILES WIDE EXTENDS
THROUGH THE MUCH OF THE THUNDERSTORM. MOST TORNADOES FORM IN THIS
AREA OF ROTATION CALLED THE MESOCYCLONE.

A NUMBER OF TORNADO MYTHS EXIST. A MYTH...WINDOWS SHOULD BE OPENED
TO EQUALIZE AIR PRESSURE. LEAVE THE WINDOWS ALONE. SEEK SHELTER
IMMEDIATELY. ANOTHER MYTH...LOW PRESSURE ASSOCIATED WITH TORNADOES
CAUSES BUILDINGS TO EXPLODE. VIOLENT TORNADIC WINDS AND DEBRIS
SLAMMING INTO A STRUCTURE CAUSE MOST OF THE DAMAGE. A MYTH...IF
YOU ARE CAUGHT OUTSIDE YOU SHOULD SEEK SHELTER UNDER AN OVERPASS.
SEEK SHELTER IN A STURDY REINFORCED BUILDING OR UNDERGROUND. OUTDOOR
SHELTER MAY PROVIDE LIMITED PROTECTION...BUT YOUR RISK WILL BE
REDUCED BY MOVING INSIDE A STRONG BUILDING OR BASEMENT.

THE NATIONAL WEATHER SERVICE ISSUES TORNADO WATCHES AND WARNINGS
TO ALERT THE PUBLIC TO A TORNADO THREAT. A TORNADO WATCH MEANS
TORNADOES ARE POSSIBLE. CONTINUE WITH YOUR DAILY ROUTINE...BUT
BE READY TO TAKE QUICK ACTION SHOULD A TORNADO WARNING BE ISSUED.
A TORNADO WARNING MEANS THAT TORNADOES ARE IMMINENT OR OCCURRING.
SEEK SHELTER IMMEDIATELY...IN A BASEMENT IF POSSIBLE.

YOU SHOULD PREPARE FOR TORNADOES NOW. DEVELOP A SEVERE WEATHER
SAFETY PLAN. IDENTIFY SAFE SHELTERS WHERE YOU CAN GO SHOULD A
TORNADO THREATEN. KNOW THE BASIC WEATHER SAFETY TERMS. KEEP TUNED
TO YOUR FAVORITE MEDIA OUTLET FOR THE LATEST NATIONAL WEATHER
SERVICE STATEMENTS CONCERNING TORNADOES.

AT 115 PM...THE NATIONAL WEATHER SERVICE...THE NEW YORK STATE
OFFICE OF EMERGENCY MANAGEMENT...THE NEW YORK STATE DEPARTMENT
OF EDUCATION AND THE NEW YORK STATE BROADCASTERS ASSOCIATION WILL
CONDUCT A TEST OF THE HAZARDOUS WEATHER WARNING SYSTEM. THIS DRILL
ALLOWS US TO TEST COMMUNICATIONS SYSTEMS AVAILABLE DURING HAZARDOUS
WEATHER SITUATIONS.

NOAA WEATHER RADIO OFFERS ONE WAY TO RECEIVE IMMEDIATE RELAY OF
SEVERE WEATHER WARNINGS. MANY LOCAL TELEVISION AND RADIO STATIONS
ALSO BROADCAST WEATHER ALERTS. COMPUTERS AND WIRELESS DEVICES CAN
ALSO RECEIVE WARNINGS. THE RED CROSS...MANY STATE EMERGENCY
MANAGEMENT AGENCIES AND PRIVATE VENDORS HAVE WIRELESS APPLICATIONS
THAT WILL ALERT YOU OF SEVERE WEATHER BY RELAYING NATIONAL WEATHER
SERVICE WARNINGS.

FOR MORE INFORMATION ON SEVERE WEATHER AWARENESS WEEK...GO TO OUR
WEB SITE WWW.WEATHER.GOV. THEN CLICK ON EASTERN NEW YORK OR
WESTERN NEW ENGLAND. FINALLY...SELECT OUR SEVERE WEATHER AWARENESS
LINK.

TOMORROW WE LOOK AT FLASH FLOODING.

$$

DIRIENZO


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