Winter storm watch
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A Winter Storm Watch is issued by the National Weather Service of the United States when there is a potential for heavy snow or significant ice accumulations. The watch is usually issued at least 24 to 36 hours before the storm's arrival in the area. As is true with a Winter Weather Advisory, the criteria for this watch can vary from place to place. A similar warning is issued by Environment Canada's Meteorological Service of Canada offices.
[edit] Example of a Winter Storm Watch
URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE NORTHERN INDIANA 100 PM EST SUN JAN 30 2011 ...POTENT WINTER STORM TO AFFECT THE REGION... .A STRONG LOW PRESSURE SYSTEM WILL PUSH INTO THE OHIO VALLEY ON TUESDAY...AND SUPPORT DETERIORATING WEATHER CONDITIONS IN THE AREA. SNOW WILL DEVELOP ON TUESDAY AFTERNOON...EXPANDING IN COVERAGE AND INTENSITY TUESDAY EVENING. SNOW WILL CONTINUE INTO WEDNESDAY AFTERNOON...ENDING BY WEDNESDAY EVENING. SNOW MAY MIX WITH OR CHANGE TO SLEET OR FREEZING RAIN SOUTH OF ROUTE 24...WITH SOME ICING POSSIBLE. SNOWFALL AMOUNTS OF UP TO 18 INCHES WILL BE POSSIBLE WITH THIS SYSTEM...WITH LOCALLY HIGHER AMOUNTS OF OVER 20 INCHES NOT OUT OF THE REALM OF POSSIBILITY. THESE HIGHER AMOUNTS WILL LIKELY BE ACROSS FAR NORTHERN INDIANA AND SOUTHWEST LOWER MICHIGAN. SOME SLEET COULD ALSO MIX WITH THE SNOW OVER NORTH CENTRAL INDIANA AND FAR NORTHWEST OHIO...REDUCING SNOWFALL AMOUNTS. SUSTAINED WINDS OF 15 TO 30 MPH WITH HIGHER GUSTS...WOULD SUPPORT WIDESPREAD BLOWING AND DRIFTING SNOW...WITH DRIFTS POTENTIALLY REACHING SEVERAL FEET IN SOME LOCATIONS. TRAVEL WILL LIKELY BE DIFFICULT TO IMPOSSIBLE IN MANY AREAS...WITH ROAD CLOSURES POSSIBLE. THERE IS STILL SOME UNCERTAINTY REGRADING THE EXACT TRACK OF THIS SYSTEM...AS CURRENT FORECAST SNOW AMOUNTS AND STORM IMPACTS COULD CERTAINLY CHANGE. PERSONS IN THE AREA SHOULD PREPARE FOR THIS POTENTIALLY DANGEROUS STORM. LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR LATER UPDATES ON THIS POTENTIALLY DANGEROUS SITUATION...ESPECIALLY PERSONS PLANNING TRAVEL IN THE REGION. INZ017-018-022>027-032>034-OHZ015-016-024-025-310000- /O.CON.KIWX.WS.A.0001.110201T1800Z-110203T0000Z/ WHITLEY-ALLEN IN-CASS IN-MIAMI-WABASH-HUNTINGTON-WELLS-ADAMS- GRANT-BLACKFORD-JAY-PAULDING-PUTNAM-VAN WERT-ALLEN OH- INCLUDING THE CITIES OF...COLUMBIA CITY...TRI-LAKES... SOUTH WHITLEY...FORT WAYNE...NEW HAVEN...LOGANSPORT... ROYAL CENTER...PERU...GRISSOM AFB...MEXICO...WABASH... NORTH MANCHESTER...HUNTINGTON...ROANOKE...BLUFFTON...OSSIAN... DECATUR...BERNE...MARION...GAS CITY...UPLAND...HARTFORD CITY... MONTPELIER...PORTLAND...DUNKIRK...PAULDING...ANTWERP...MELROSE... OTTAWA...PANDORA...KALIDA...FORT JENNINGS...VAN WERT...DELPHOS... OHIO CITY...LIMA...SPENCERVILLE 100 PM EST SUN JAN 30 2011 ...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY EVENING... A WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH WEDNESDAY EVENING. * TIMING...SNOW WILL DEVELOP TUESDAY AFTERNOON...EXPANDING IN COVERAGE AND INTENSITY TUESDAY EVENING. SNOW MAY MIX WITH OR CHANGE TO FREEZING RAIN OR SLEET LATE TUESDAY NIGHT INTO WEDNESDAY MORNING. SNOW WILL CONTINUE INTO WEDNESDAY AFTERNOON...ENDING WEDNESDAY EVENING. * MAIN IMPACT...HEAVY SNOW AND SLEET ACCUMULATIONS OF 6 TO 12 INCHES ARE POSSIBLE...WITH THE POTENTIAL FOR LOCALLY HIGHER AMOUNTS. IF PRECIPITATION CHANGES TO FREEZING RAIN OR SLEET... MUCH LOWER SNOWFALL AMOUNTS WOULD BE EXPECTED BUT SIGNIFICANT ICING WOULD BE POSSIBLE WITH EXTENDED POWER OUTAGES. * OTHER IMPACTS...SUSTAINED WINDS OF 15 TO 30 MPH WITH HIGHER GUSTS WOULD SUPPORT WIDESPREAD BLOWING AND DRIFTING SNOW... HIGHLY IMPACTING TRAVEL. THESE WINDS WOULD ALSO CAUSE TREE LIMBS AND POWER LINES TO FALL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS. $$ HEINLEIN
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[edit] External links
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