899  
NOUS43 KARX 092036  
PNSARX  
 
PUBLIC INFORMATION STATEMENT  
NATIONAL WEATHER SERVICE LA CROSSE WI  
236 PM CST MON NOV 9 2009  
   
..WINTER WEATHER AWARENESS WEEK IN MINNESOTA AND WISCONSIN
 
 
THIS IS WINTER WEATHER AWARENESS WEEK.  
 
IT IS IMPORTANT THAT YOU LEARN AND UNDERSTAND THE DEFINITIONS OF  
DIFFERENT WINTER RELATED HEADLINES. HERE ARE THE MAIN PRODUCTS USED  
BY THE NWS TO KEEP PEOPLE INFORMED.  
 
HAZARDOUS WEATHER OUTLOOK  
 
THE HAZARDOUS WEATHER OUTLOOK /HWO/ INCLUDES ANY POTENTIAL WEATHER  
HAZARD OUT TO SEVEN DAYS. IT IS USED FOR PLANNING PURPOSES AND WILL  
INCLUDE A SHORT DESCRIPTION OF WHAT THE WEATHER THREAT IS...WHEN IT  
IS EXPECTED...AND HOW MUCH IT MAY IMPACT THE REGION. THE HWO IS  
ISSUED DAILY AROUND 5 AM AND UPDATED DURING THE DAY AS NEEDED.  
IT IS ALSO BROADCAST OVER NOAA WEATHER RADIO.  
 
WINTER STORM WATCH  
 
A WINTER STORM WATCH IS ISSUED WHEN THERE IS A POTENTIAL FOR A  
WINTER STORM TO AFFECT THE REGION DURING THE NEXT 1 TO 3 DAYS. IT  
DOES NOT ALWAYS MEAN THE AREA WILL BE HIT BY A WINTER STORM...BUT  
THERE IS STILL SOME UNCERTAINITY OF THE EXACT PATH OR TIMING OF THE  
EVENT. THIS IS A PLANNING STAGE. USE THIS TIME TO ENSURE YOU HAVE  
SUPPLIES AT HOME LIKE EXTRA FOOD...MEDICATIONS...OR BABY ITEMS.  
IF TRAVEL IS PLANNED...CHECK AHEAD AND SEE IF A DIFFERENT ROUTE OR  
DELAYING YOUR DEPARTURE MAY MAKE YOUR TRIP SAFER. BE ALERT FOR  
CHANGING WEATHER CONDITIONS.  
 
WINTER WEATHER ADVISORY  
 
ADVISORIES ARE ISSUED FOR THOSE WINTER WEATHER EVENTS THAT ARE  
EXPECTED TO BE MORE OF AN INCONVENIENCE AND SHOULD NOT BECOME  
LIFE-THREATENING IF CAUTION IS EXERCISED. THESE ARE OFTEN ISSUED FOR  
3 TO 6 INCHES OF SNOW...BLOWING AND DRIFTING SNOW...FREEZING  
DRIZZLE...OR A COMBINATION OF THESE ELEMENTS. IT MAY BE ISSUED FOR  
LESS SNOW FOR EARLY SEASON EVENTS...WHEN DRIVERS MAY NOT BE  
ACCUSTOMED TO SLICK ROADS.  
 
WINTER STORM WARNING  
 
WINTER STORM WARNINGS ARE USUALLY ISSUED WHEN DANGEROUS WINTER  
WEATHER IS EXPECTED...OCCURRING...OR IMMINENT. THE WEATHER CAN  
BECOME LIFE-THREATENING. CRITERIA INCLUDES SNOWFALLS OF 6 INCHES OR  
MORE IN 12 HOURS...8 INCHES IN 24 HOURS...OR LOWER AMOUNTS IF  
ACCOMPANIED BY STRONG WINDS OR A COMBINATION OF DANGEROUS WINTER  
ELEMENTS. AVOID UNNECESSARY TRAVEL.  
 
BLIZZARD WARNINGS  
 
THE MOST DANGEROUS WINTER EVENT IS CERTAINLY THE BLIZZARD. BLIZZARD  
WARNINGS ARE ISSUED WHEN SNOW OR BLOWING SNOW LOWERS VISIBILITIES TO  
A 1/4 MILE OR LESS...WIND GUSTS HIT 35 MPH OR HIGHER...AND THE STORM  
LASTS FOR 3 HOURS OR MORE. TRAVEL IS DANGEROUS AND SHOULD BE AVOIDED  
IF POSSIBLE.  
 
ICE STORM WARNING  
 
ICE STORM WARNINGS ARE ISSUED WHEN FREEZING RAIN WILL CAUSE  
WIDESPREAD GLAZING. A COATING OF ICE IS EXPECTED TO REACH 1/4 INCH  
THICK OR MORE ON OBJECTS AND MAKE TRAVEL NEARLY IMPOSSIBLE. FOR  
LESSER AMOUNTS OF ICE...USUALLY A WINTER WEATHER ADVISORY WOULD BE  
USED...BUT EVEN A THIN GLAZE OF ICE CAN MAKE TRAVEL DIFFICULT. AVOID  
TRAVEL.  
 
WIND CHILL WARNING  
 
ISSUED WHEN WIND CHILLS OF -35 F OR LOWER ARE EXPECTED WITH WIND  
SPEEDS OF 10 MPH OR MORE. A WIND CHILL ADVISORY IS ISSUED FOR VALUES  
BETWEEN -20 AND -34 F. DRESS WARMLY AND COVER AS MUCH EXPOSED SKIN  
AS POSSIBLE.  
 

 
 
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