Snow Advisory

Snow Advisory

A Snow Advisory is issued by the National Weather Service of the United States when a low pressure system produces snow that may cause significant disruption , but does not meet warning criteria. The advisory criteria varies from area to area. Snow advisories are typically issued only when a storm system is expected to only produce snow in the advised area. Depending on the amount of snow that is expected, a Heavy snow warning can be issued for similar times, but when larger amounts of snow are expected. The exact border between a snow advisory and heavy snow warning varies throughout the country. For example, one inch of snow will constitute the advisory in Florida, while up to 5 inches will do so in New England. If other forms of wintry precipitation are expected, then a Winter Weather Advisory or winter storm warning can be issued, also depending on the amount of precipitation that is expected.

Example of a snow advisory

URGENT - WINTER WEATHER MESSAGENATIONAL WEATHER SERVICE GREAT FALLS MT657 PM MST SUN DEC 9 2007

MTZ008>015-044-045-047-048-050>055-101100-/O.CON.KTFX.SN.Y.0025.071210T1100Z-071211T0000Z/BEAVERHEAD-NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL-CASCADE-CHOUTEAU-CENTRAL AND SOUTHERN LEWIS AND CLARK-MADISON-TOOLE-LIBERTY-BLAINE-SOUTHERN ROCKY MOUNTAIN FRONT-JUDITH BASIN-FERGUS-JEFFERSON-BROADWATER-MEAGHER-GALLATIN-INCLUDING THE CITIES OF...DILLON...BROWNING...CUT BANK...HAVRE...GREAT FALLS...FORT BENTON...HELENA...LINCOLN...ENNIS...SHELBY...CHESTER...CHINOOK...CHOTEAU...STANFORD...LEWISTOWN...BOULDER...TOWNSEND...WHITE SULPHUR SPRINGS...BOZEMAN...WEST YELLOWSTONE657 PM MST SUN DEC 9 2007

...SNOW ADVISORY REMAINS IN EFFECT FROM 4 AM TO 5 PM MST MONDAYFOR ELEVATIONS ABOVE 4500 FEET...

A SNOW ADVISORY REMAINS IN EFFECT FROM 4 AM TO 5 PM MST MONDAYFOR ELEVATIONS ABOVE 4500 FEET.

PERIODS OF LIGHT SNOW ARE EXPECTED TO FALL OVER THE ROCKYMOUNTAIN FRONT...THE CENTRAL MOUNTAINS...AND ACROSS MUCH OFSOUTHWEST MONTANA FROM MONDAY MORNING THROUGH MONDAY AFTERNOON.EXPECT NEW SNOW ACCUMULATIONS ON MONDAY TO RANGE FROM 2 TO6 INCHES FOR ELEVATIONS ABOVE 4500 FEET...WHILE SNOWACCUMULATIONS WILL GENERALLY BE LESS THAN 1 INCH AT LOWERELEVATIONS. AREAS OF BLOWING AND DRIFTING SNOW WILL REDUCEVISIBILITIES AT TIMES.

A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILYTRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS ANDLIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

LISTEN TO NOAA WEATHER RADIO...OR YOUR LOCAL MEDIA FOR THE LATESTUPDATES ON THIS SITUATION.

$$

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]


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