Winter storm warning

Winter storm warning

A Winter Storm Warning is a statement made by the National Weather Service of the United States which means a winter storm is occurring or is about to occur in the area, usually within 24 hours. Generally, a Winter Storm Warning is issued if at least 6 or more inches of snow or 3 or more inches of snow with a large accumulation of ice is forecast. Usually, a large accumulation of ice alone with no snow will result in either a Winter Weather Advisory, Ice Storm Warning, or in the case of light freezing rain, a Freezing Rain or Drizzle Advisory.

A similar warning is issued by Environment Canada's Meteorological Service of Canada from their offices.

Example of a Winter Storm Warning

URGENT - WINTER WEATHER MESSAGENATIONAL WEATHER SERVICE ALBUQUERQUE NM335 PM MST SUN DEC 9 2007

...ANOTHER WINTER STORM BEARING DOWN ON NEW MEXICO...

.A MIX OF WINTER WEATHER IS IN THE FORECAST AS AN UPPER LEVEL LOWPRESSURE SYSTEM CURRENTLY LOCATED OVER OFF THE NORTHERN BAJACALIFORNIA COAST SLOWLY CROSSES NEW MEXICO LATE TONIGHT THROUGHTUESDAY. ALTHOUGH SNOW WILL BEGIN TO FALL IN THE NORTHERNMOUNTAINS AND NORTHEAST HIGHLANDS LATE TONIGHT...THE BULK OF THEHEAVY SNOW IS EXPECTED ON MONDAY AND MONDAY NIGHT. ON THE EASTERNPLAINS...WARM AND MOIST AIR ALOFT WILL GLIDE OVER A SHALLOW POOLOF SUBFREEZING AIR NEAR THE SURFACE.

LIGHT FREEZING DRIZZLE MAY BEGIN AS EARLY AS TONIGHT...THEN BECOMEFREEZING RAIN ON MONDAY AND CONTINUE INTO MONDAY NIGHT. DENSE FOGIS ALSO POSSIBLE ON THE PLAINS. SOME UNCERTAINTY EXISTS ABOUT HOWDEEP THIS SHALLOW POOL OF COLD AIR WILL BECOME...AND THAT WILLINFLUENCE HOW FAR WEST THE LEADING EDGE OF THE FREEZING RAIN WILLDEVELOP. LOCATIONS ALONG THE TEXAS BORDER HAVE THE BEST CHANCE OFRECEIVING SIGNIFICANT ICE ACCUMULATION DUE TO FREEZING RAIN. THEWINTER PRECIPITATION COULD LINGER THROUGH TUESDAY AND TUESDAYNIGHT...POTENTIALLY REQUIRING AN EXTENSION OF ANY ADVISORIES ORWARNINGS IN EFFECT. CLOSELY MONITOR YOUR FAVORITE SOURCE OFWEATHER INFORMATION FOR FURTHER UPDATES ON THIS POTENTIALLYDANGEROUS WINTER WEATHER EVENT.

NMZ006-007-012-013-018>021-100445-/O.UPG.KABQ.WS.A.0012.071210T0700Z-071211T1300Z//O.NEW.KABQ.WS.W.0009.071210T0700Z-071211T1300Z/HARDING COUNTY-FAR NORTHEAST PLAINS-CONCHAS LAKE/GUADALUPE COUNTY-QUAY COUNTY-DE BACA COUNTY-CHAVES COUNTY PLAINS-ROOSEVELT COUNTY-CURRY COUNTY-INCLUDING THE CITIES OF...ROY...CLAYTON...SANTA ROSA...TUCUMCARI...FORT SUMNER...ROSWELL...PORTALES...CLOVIS335 PM MST SUN DEC 9 2007

...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AMMST TUESDAY...

THE NATIONAL WEATHER SERVICE IN ALBUQUERQUE HAS ISSUED A WINTERSTORM WARNING...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 AMMST TUESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

THE POTENTIAL EXISTS FOR FREEZING RAIN AND SLEET TO PRODUCEGREATER THAN OR EQUAL TO ONE QUARTER INCH OF ICE ACCUMULATION BYMONDAY NIGHT ACROSS NEW MEXICOS EASTERN PLAINS. AREAS OF DENSE FOGMAY ALSO DEVELOP AND REDUCE VISIBILITY BELOW ONE HALF MILE ATTIMES. NORTH OF I-40...THE FREEZING RAIN COULD CHANGE OVER TO SNOWWITH LIGHT SNOW ACCUMULATION ON TOP OF THE ICE BY TUESDAY MORNING.ICE ACCUMULATION COULD MAKE DRIVING HAZARDOUS AND MAY TOPPLE POWERLINES AND OTHER FRAGILE STRUCTURES.

REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHERCONDITIONS ARE IMMINENT OR HIGHLY LIKELY.

$$

ee also

Severe weather terminology (United States)

External links

* [http://www.nws.noaa.gov/ National Weather Service]
* [http://www.fema.gov Federal Emergency Management Agency]
* [http://www.msc-smc.ec.gc.ca/cd/brochures/warning_e.cfm? Meteorological Service of Canada]


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