Alaska, 2007

Heavy Snow in Alaska, November 14 to 15, 2007

November 14 to 15, 2007 · NWS AFC · 1 event in 1 county or zone

Low pressure in Bristol Bay pushed warm moist air over the Chugach Mountains and into the Copper River Basin.

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS AFC wrote it up.

Low pressure in Bristol Bay pushed warm moist air over the Chugach Mountains and into the Copper River Basin.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Anchorage, AK wrote its last area forecast discussion before the first event at Nov 14, 9:00 AM AKST, 1 hour earlier.

Area forecast discussion, Nov 14, 9:00 AM AKST, 1 hour before
AREA FORECAST DISCUSSION
SOUTHCENTRAL AND SOUTHWEST ALASKA
200 PM AST WED NOV 14 2007

.MODEL DISCUSSION...GFS MODEL STILL OVERALL THE MOST REASONABLE AND
CONSISTENT MODEL SOLUTION. 700-500MB LAYERED RH WITH MOIST SW FLOW
ACROSS THE EASTERN GULF AND EAST COPPER RIVER BASIN IS HANDLED A
LITTLE BETTER WITH THE NAM IN THE SHORT TERM.

.ANALYSIS AND UPPER LEVELS...
BROAD MOIST SW JET ACROSS THE SOUTH/EAST GULF TO OVER THE EASTERN
COPPER RIVER BASIN IS HANDLED FAIRLY WELL BY THE MODELS. THE BAND
MOVES WEST TONIGHT AND DEEP MOISTURE FEED WEAKENS AS THE BERING SEA
TROUGH DIGS SE OVER THE NE PACIFIC. REMNANT OF BAND MOVE OVER THE
WESTERN GULF AND SOUTHCENTRAL ALASKA EARLY THU MORNING. THIS BAND
CONTINUES TO WEAKEN AS IT BRUSHES EASTERN BRISTOL BAY THU NIGHT.
GENERAL DRYING BEHIND BAND LIKELY WITH ONSET OF EASTERLY FLOW IN THE
MID AND UPPER LEVELS. STORM CENTER DEVELOPING UNDER DIGGING UPPER
TROUGH MOVES INTO THE SE GULF IN THE 950S FRI MORNING. THIS CENTER
WEAKENS IN THE LOWER 980S AS IT MOVES TO THE NORTHERN GULF SAT
AFTERNOON.

STACKED BRISTOL BAY LOW MOVES SOUTH OF THE AK PEN THU. WILL SEE
GENERAL DRYING OVER THE SW MAINLAND TONIGHT WITH ONSET OF OFFSHORE
FLOW. HIGH PRESSURE OVER THE WESTERN ALEUTIAN ISLANDS/WEST BERING SEA
MOVES TO THE EASTERN BERING SEA/SW MAINLAND COAST SAT. MODERATE
FRONTAL TROUGH MOVES TO THE WESTERN BERING SEA/WESTERN ALEUTIAN
ISLANDS FRI MORNING. FRONTAL TROUGH MOVES TO THE EASTERN ALEUTIANS
SAT AFTERNOON.

.SHORT TERM FORECAST...
.EAST...SNOW IS THE MAIN FORECAST ISSUE OVER THE NEXT 12-18 HOURS.
MOIST SW JET WEAKENS AS IT SHIFTS WEST TONIGHT. EXPECT HEAVY SNOW
CONDITIONS TO SLOWLY TAPER OFF OVER THE COPPER RIVER TONIGHT.
SIGNIFICANT SNOW AMOUNTS LIKELY OVER HIGHER ELEVATIONS OF PRINCE
WILLIAM SOUND TONIGHT WITH SOUTHERLY FLOW...BUT SHOULD HAVE MUCH
LOWER AMOUNTS IN THE LOWER LEVELS WITH SE FLOW AT 850. FAIR SNOW
AMOUNTS ARE ALSO EXPECTED OVER PORTIONS OF THE EASTERN KENAI PEN
TONIGHT/EARLY THU. GENERAL DRYING WILL FOLLOW BEHIND THE BAND.
MOISTURE INTRUDES AGAIN FROM THE EAST AHEAD OF STORM MOVING N INTO
THE GULF FRI. GUSTY GAP WINDS LIKELY TO BE THE RULE OVER MUCH OF THE
NORTH GULF AND CENTRAL ALASKA FRI AS STORM CENTER MOVES INTO THE GULF
OF ALASKA.

.WEST...EXPECT SHOWERS OVER THE SW MAINLAND WILL DIMINISH THROUGH
TONIGHT/THU WITH INCREASING OFFSHORE FLOW AND BRISTOL BAY LOW
SHIFTING SOUTH. SNOW SHOWERS WITH BRISK NLY FLOW WILL CONTINUE OVER
MUCH OF THE EASTERN BERING SEA THRU THU NIGHT. NLY WINDS WILL
DIMINISH FRI OVER MUCH OF THE EASTERN/CENTRAL BERING SEA WITH
APPROACH OF THE RIDGE. HOWEVER...WINDS NLY WILL LINGER OVER BRISTOL
BAY INTO SAT MORNING. STRONG SLY WINDS WITH RAIN/SNOW WILL SPREAD TO
THE WESTERN ALEUTIANS FRI WITH APPROACH OF FRONTAL TROUGH. EXPECT
RAIN/SNOW TO SPREAD TO THE EASTERN ALEUTIANS BY SAT AFTERNOON. STRONG
SOUTHERLY WINDS AHEAD OF THE FRONTAL TROUGH WILL DIMINISH SOME AS
ASSOCIATED LOW TRACKS N.

.AER/ALU...WATCH/WARNING SUMMARY
PUBLIC...HEAVY SNOW WARNING ZONE 141.
MARINE...GALES 132 150 155 160 165 170 176 AND 180.
FIRE WEATHER...NONE.

RMC NOV 07

Event by event

1 heavy snow. Local standard time, as filed.

Heavy Snow, Copper River Basin

When
November 14, 10:00 AM AKST to November 15, 4:16 AM AKST
Where
Copper River Basin forecast zone
Reported by
COOP Observer

Eight inches of snow fell during the early morning hours of the 14th through 0730L. A total of 17.1 inches of snow was received, with the bulk of the snow falling between 0800L and 2000L on the 14th.

What these are

Heavy Snow
Snowfall reaching the local warning threshold without the other hazards of a winter storm.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Alaska in 2007Every state in 2007This day in weather historyWarnings in Alaska, November 2007

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 60750.