Public Information Statement
Issued by NWS Aberdeen, SD

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NOUS43 KABR 111150
PNSABR
MNZ039-046-120000-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
650 AM CDT MON APR 11 2016

...MINNESOTA SEVERE WEATHER AWARENESS WEEK...DAY ONE...
...SEVERE WEATHER WATCHES...WARNINGS AND SIRENS...

WATCHES...
ARE ISSUED WHEN CONDITIONS ARE FAVORABLE FOR TORNADOES...SEVERE
THUNDERSTORMS OR FLASH FLOODS. IF YOU ARE IN A WATCH AREA...CONTINUE WITH
NORMAL ACTIVITIES BUT ALSO MAKE PLANS TO SEEK SHELTER IF NECESSARY.

WARNINGS...
ARE ISSUED WHEN SEVERE WEATHER HAS BEEN REPORTED OR IS IMMINENT. SEEK
SHELTER IMMEDIATELY IF YOU ARE IN OR NEAR THE PATH OF THE STORM. WARNINGS
ARE ISSUED BY COUNTY AND CITY NAMES. MAKE SURE YOU KNOW THE NAME OF THE
COUNTY IN WHICH YOU LIVE AND THE CITIES THAT SURROUND YOU.

ADVANCE INFORMATION...
THE FORECAST AND WARNING PROCESS BEGINS ONE OR MORE DAYS AHEAD OF TIME...
WHEN THE THREAT AREA IS DETERMINED. HAZARDOUS WEATHER OUTLOOKS ARE ISSUED
EARLY EVERY MORNING...AND UPDATED AS CONDITIONS WARRANT.

IF A WATCH IS ISSUED...
LOCAL WEATHER OFFICES ARE STAFFED WITH EXTRA PERSONNEL. STATE OFFICIALS
ARE NOTIFIED AND THEY PASS THE INFORMATION TO THE COUNTY AND LOCAL LEVEL.
COUNTIES AND CITIES ACTIVATE THEIR SPOTTER GROUPS AS THE THREAT INCREASES.
TV AND RADIO STATIONS PASS THE WORD TO THE PUBLIC.

IF A WARNING IS ISSUED...
WARNINGS ARE DISSEMINATED SWIFTLY IN A MULTITUDE OF WAYS...INCLUDING TV...
RADIO...AND OVER THE INTERNET. ADVANCES IN TECHNOLOGY HAVE ALLOWED PEOPLE
TO RECEIVE WARNINGS VIA CELL PHONE...PAGER...AND NUMEROUS OTHER METHODS.
SPOTTERS PROVIDE IMPORTANT REPORTS ON THE STORM...AND EMERGENCY OFFICIALS
CARRY OUT THE PLANS THAT THE EMERGENCY MANAGERS HAVE DEVELOPED. UPDATES
ARE ISSUED FREQUENTLY UNTIL THE IMMEDIATE THREAT HAS ENDED.

SIRENS...
COUNTIES AND CITIES OWN THE SIRENS AND THEREFORE DECIDE HOW AND WHEN TO
ACTIVATE THEM.  THE NATIONAL WEATHER SERVICE DOES NOT SOUND THEM. THERE
ARE MANY DIFFERENT POLICIES BY COUNTIES AND CITIES. SOME WILL ACTIVATE
THEM ACROSS THE ENTIRE COUNTY FOR A TORNADO WARNING ONLY. OTHERS WILL
ACTIVATE SIRENS COUNTYWIDE FOR TORNADO WARNINGS AND ALL SEVERE
THUNDERSTORM WARNINGS. SOME WILL ACTIVATE SIRENS ACROSS THE ENTIRE COUNTY
FOR TORNADO WARNINGS AND SEVERE THUNDERSTORMS THAT HAVE WINDS OF AT LEAST
70 OR 75 MPH.  OTHERS WILL ACTIVATE SIRENS ONLY FOR PORTIONS OF COUNTIES.
ALSO...LOCAL OFFICIALS MAY SOUND THE SIRENS ANYTIME THEY BELIEVE SEVERE
WEATHER IS A THREAT...EVEN IF THERE IS NO WARNING FROM THE NATIONAL
WEATHER SERVICE.

SIRENS NORMALLY SOUND ABOUT 3 MINUTES AND THEN GO SILENT. IT IS VERY RARE
TO KEEP THE SIRENS SOUNDING FOR THE ENTIRE WARNING...SINCE THAT WILL CAUSE
THE BACKUP BATTERY TO RUN OUT...WHICH WOULD BE CRITICAL IN THE EVENT POWER
GOES OUT. FURTHERMORE...THE SIREN MOTOR WILL FAIL MUCH MORE QUICKLY IF THE
SIREN SOUNDS CONTINUOUSLY. SOME JURISDICTIONS MAY REPEAT SIREN ACTIVATION
EVERY FEW MINUTES.  THERE IS NO SUCH THING AS AN ALL CLEAR FOR STORMS.

MEDIA...
MEDIA OUTLETS RECEIVE THE WARNING INFORMATION AND DISSEMINATE IT TO YOU...
OFTEN BY INTERRUPTING PROGRAMMING. MANY TELEVISION STATIONS USE A CRAWL
AND OTHER VISUAL MEANS.

NOAA WEATHER RADIO...
THE TONE ALERT FEATURE OF NOAA WEATHER RADIO WILL ACTIVATE SPECIALLY BUILT
RECEIVERS...SOUNDING AN ALARM TO ALERT YOU TO THE DANGER.  IT SOUNDS ITS
ALERT ANYTIME THE NATIONAL WEATHER SERVICE ISSUES A WARNING...EVEN IN THE
MIDDLE OF THE NIGHT. MAKE SURE YOU HAVE A NOAA WEATHER RADIO...AS YOU CAN
NOT ALWAYS DEPEND ON SIRENS...PHONE CALLS OR SEEING THE WARNINGS ON
TELEVISION.

$$



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