Public Information Statement
Issued by NWS Cheyenne, WY

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NOUS45 KCYS 221454
PNSCYS
WYZ101>119-222100-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
854 AM MDT TUE APR 22 2014

...PUBLIC INFORMATION STATEMENT...

...2014 SEVERE WEATHER AWARENESS WEEK FOR WYOMING...

TODAY IS TUESDAY AND MARKS THE SECOND DAY OF SEVERE WEATHER
AWARENESS WEEK FOR THE STATE OF WYOMING...WHICH CONTINUES THROUGH
FRIDAY...APRIL 25TH.

SEVERE WEATHER AWARENESS WEEK PROVIDES THE NATIONAL WEATHER SERVICE
AN OPPORTUNITY TO TEST COMMUNICATION SYSTEMS AND TO GET
POTENTIALLY LIFESAVING INFORMATION OUT TO THE PUBLIC. NOW IS THE
TIME FOR PEOPLE TO REVIEW THEIR SAFETY PLANS AND BE PREPARED FOR
SEVERE WEATHER SEASON.

THE TOPIC FOR TODAY IS SEVERE WEATHER HAZARDS.

A THUNDERSTORM IS CONSIDERED SEVERE WHEN IT PRODUCES HAIL THAT IS
ONE INCH IN DIAMETER OR LARGER...DAMAGING WINDS EQUAL TO OR
GREATER THAN 58 MILES PER HOUR OR A TORNADO.

THERE ARE NUMEROUS ASPECTS OF SEVERE THUNDERSTORMS THAT POSE A
THREAT TO LIFE AND PROPERTY. ALONG WITH THE THREAT OF LARGE
HAIL...DAMAGING WINDS...AND TORNADOES. EVERYONE MUST ALSO BE AWARE
OF THE POSSIBILITY OF FREQUENT LIGHTNING AND FLOODING.
LIGHTNING...FLOODING...AND TORNADOES WILL BE DISCUSSED LATER
DURING THE WEEK.

HAIL IS PRODUCED IN A THUNDERSTORM AS RISING CURRENTS OF AIR...
KNOWN AS UPDRAFTS...CARRY WATER DROPLETS TO A HEIGHT WHERE
FREEZING OCCURS. HAIL CONTINUES TO GROW INSIDE OF A THUNDERSTORM
UNTIL IT BECOMES TOO HEAVY AND CAN NO LONGER BE SUPPORTED BY THE
STORM UPDRAFT. ONCE THIS OCCURS...THE HAILSTONE FALLS TO THE
GROUND. LARGE HAIL IS AN INDICATION THAT A THUNDERSTORM IS QUITE
INTENSE WITH A VERY STRONG UPDRAFT.

ANOTHER SIGNIFICANT SEVERE WEATHER THREAT IS DAMAGING WINDS...
WHICH CAN BE CAUSED BY AN EVENT KNOWN AS A DOWNBURST. A DOWNBURST
IS A SMALL AREA OF RAPIDLY DESCENDING AIR BENEATH A THUNDERSTORM.
ONCE THIS DESCENDING AIR HITS THE GROUND, IT SPREADS OUT IN ALL
DIRECTIONS. DOWNBURSTS AND THE RESULTING STRAIGHT LINE WINDS CAN
CAUSE DAMAGE COMPARABLE TO A TORNADO.

ANYTIME THE THREAT FOR SEVERE WEATHER EXISTS...STAY UPDATED ON THE
LATEST WEATHER INFORMATION BY GOING TO THE NATIONAL WEATHER SERVICE
WEBSITE...HTTP://WWW.WEATHER.GOV, OR BY TUNING IN TO NOAA WEATHER
RADIO ALL HAZARDS...OR YOUR LOCAL TELEVISION AND RADIO STATION.
MAKE SURE TO WATCH FOR SIGNS FOR APPROACHING STORMS...SUCH AS
DARKENING SKIES... INCREASING WINDS...FLASHES OF LIGHTNING...AND
THUNDER.

MORE INFORMATION ABOUT SEVERE WEATHER AWARENESS WEEK CAN BE FOUND
AT: HTTP://WWW.WEATHER.GOV/CHEYENNE.

$$







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