Heavy snow warning

A Heavy snow warning was a weather warning issued by the National Weather Service of the United States during times when a high rate of snowfall was occurring or was forecast. Generally, the warning was issued for snowfall rates of 6 inches (15 cm) or more in 12 hours, or 8 inches (20 cm) or more in 24 hours.

This warning was discontinued beginning with the 2008-09 winter storm season, replaced by the Winter Storm Warning for Heavy Snow.

A similar warning is issued by Environment Canada's Meteorological Service of Canada

Example of a heavy snow warning

 
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE FAIRBANKS AK
221 PM AST SUN DEC 9 2007

.A STORM SYSTEM MOVING NORTH OVER THE CENTRAL BERING SEA WILL MOVE
TO SOUTHWEST OF SAINT LAWRENCE ISLAND MONDAY AFTERNOON. THE STORM
WILL BRING SNOW AND EAST WINDS OF 30 TO 45 MPH TONIGHT OVER MUCH
OF WESTERN ALASKA FROM THE YUKON DELTA TO THE SEWARD PENINSULA
TONIGHT. WINDS WILL DIMINISH EARLY MONDAY BUT SNOW IS EXPECTED TO
CONTINUE THROUGH MONDAY AFTERNOON.

AKZ212-100600-
/X.CON.PAFG.HS.W.0011.071210T0000Z-071211T0200Z/
EASTERN NORTON SOUND AND NULATO HILLS-
INCLUDING...UNALAKLEET...STEBBINS...ST MICHAEL...ELIM...KOYUK...
SHAKTOOLIK
221 PM AST SUN DEC 9 2007

...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 5 PM AST MONDAY...

A HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 5 PM AST MONDAY.

SNOW WILL SPREAD INTO THE AREA SOUTH OF UNALAKLEET THIS
AFTERNOON...AND WILL SPREAD NORTH TONIGHT...AND CONTINUE INTO
MONDAY. SNOWFALL ACCUMULATION OF 6 TO 10 INCHES ARE EXPECTED WITH
HIGHEST AMOUNTS ACROSS THE NULATO HILLS. EAST WINDS WILL INCREASE
TONIGHT TO 25 TO 35 MPH AND SOME VISIBILITIES WILL BE REDUCED TO
ONE-QUARTER MILE AT TIMES IN BLOWING SNOW.

A HEAVY SNOW WARNING MEANS HAZARDOUS WINTER WEATHER IS EXPECTED.
THE ACCUMULATION OF NEW SNOW WILL MAKE TRAVEL DIFFICULT.

$$
gollark: No, it really exists, though `is-number` is much more popular.
gollark: It was only picked up because they foolishly used a deprecated function to do this.
gollark: https://schneider.dev/blog/event-stream-vulnerability-explained/
gollark: Every person you depend on *can inject code in your application* and it would be pretty hard to notice. We have literally *seen* this attack.
gollark: Specifically, slower package management (especially with transistive dependencies), worse performance from loading more files for no good reason, and, more importantly, *security*.

See also


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