Alaska, 2007

Coastal Flood in Alaska, September 11, 2007

September 11, 2007 · NWS AFG · 1 event in 1 county or zone

A 970 mb low in the central Bering Sea was stationary on the 11th and 12th and produced tides about 3 feet above normal and southeast winds to 30 mph with waves 6 to 8 feet over Norton Sound. The State of Alaska Department of Transportation reported that Mile 22 on the road from Nome to Council was washed out, with water overflowing at mile 23 and 24.

The toll

Deaths
0
Injuries
0
Property damage
$12,000
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 AFG wrote it up.

A 970 mb low in the central Bering Sea was stationary on the 11th and 12th and produced tides about 3 feet above normal and southeast winds to 30 mph with waves 6 to 8 feet over Norton Sound. The State of Alaska Department of Transportation reported that Mile 22 on the road from Nome to Council was washed out, with water overflowing at mile 23 and 24. The DOT reported the cost to repair the road at $12,063.50.

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 Fairbanks, AK wrote its last area forecast discussion before the first event at Sep 11, 8:29 AM AKST, 2 hours 1 minute earlier.

Area forecast discussion, Sep 11, 8:29 AM AKST, 2 hours 1 minute before
NORTHERN ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FAIRBANKS AK
229 PM ADT TUE SEP 11 2007

.DISCUSSION...

UPPER AIR: A 519 DM LOW OVER THE EAST CENTRAL BERING SEA WILL
WEAKEN AND MOVE NORTH. BY THU EVENING THE LOW WILL BE 528 DM OVER
EASTERN RUSSIA. A RIDGE WITH AXIS EXTENDING NORTH FROM THE EASTERN
GULF OF ALASKA TO NORTH OF PRUDHOE BAY WILL MOVE EASTWARD AS
SHORTWAVES ROTATE EASTWARD AROUND THE LOW. BY SATURDAY AFTERNOON
LOW PRESSURE WILL BE DEEPENING OVER THE NORTHERN GULF OF ALASKA.

SURFACE: A 975 MB LOW OVER THE EAST CENTRAL BERING SEA WILL ROTATE
NORTHWARD OVER SAINT LAWRENCE ISLAND THURSDAY MORNING THEN WEAKEN
TO 991 MB AS IT MOVES NORTH OF RUSSIA THURSDAY NIGHT. ANOTHER LOW
WILL LIKELY DEVELOP DIRECTLY UNDER UPPER LEVEL LOW OVER THE
NORTHERN GULF OF ALASKA ON SATURDAY.

NORTH SLOPE: WINDS WILL BEGIN TO PICK UP TONIGHT IN RESPONSE TO LOW
PRESSURE OVER THE BERING SEA COMBINED WITH HIGH PRESSURE OVER THE
HIGH ARCTIC OCEAN. THIS WILL MEAN SMALL CRAFT ADVISORIES FOR THE
MARINE AREAS. SHOWERS WILL SPREAD EAST ACROSS THE ARCTIC COAST
WEDNESDAY THROUGH THURSDAY AS A FRONT ASSOCIATED WITH THE LOW
PROGRESSES EASTWARD.

WEST COAST: STRONG SOUTH TO SOUTHEAST WINDS WILL CONTINUE OVER THE
WEST COAST THROUGH THURSDAY AS BERING SEA LOW SLOWLY WEAKENS AND
MOVES NORTH. WATER ON THE NOME-COUNCIL ROAD BETWEEN MILE MARKER 23
AND 24 HAS MADE DRIVING CONDITIONS HAZARDOUS. THE ROAD WILL LIKELY
BECOME IMPASSABLE BETWEEN THIS AFTERNOON AND INTO THE EVENING AS
WAVES CUT A DITCH THROUGH THE ROAD. A COASTAL FLOOD WARNING HAS
BEEN ISSUED FOR PORT SAFETY TO SOLOMON UNTIL 10 PM THIS EVENING. THE
KIVALINA AREA WILL HAVE TO BE MONITORED FOR POSSIBLE EROSION OVER
THE NEXT FEW DAYS.

INTERIOR: SHOWERS ASSOCIATED WITH FRONT MOVING EASTWARD FROM THE
BERING SEA WILL SPREAD ACROSS THE WESTERN INTERIOR TONIGHT AND
WEDNESDAY...THEN THE CENTRAL TO EASTERN INTERIOR WEDNESDAY NIGHT
THROUGH THURSDAY. DUE TO THE SLOW MOVEMENT OF A BERING SEA
LOW...CHINOOK WINDS OVER THE ALASKA RANGE WILL BE SLOW TO
DIMINISH. WINDS SHOULD GRADUALLY DECREASE THURSDAY THROUGH FRIDAY.

COASTAL HAZARD POTENTIAL DAYS 3 AND 4...WINDS AND SEAS WILL
DIMINISH ON FRIDAY AS LOW PRESSURE MOVES NORTH TO OVER EASTERN
RUSSIA AND WEAKENS. THE KIVALINA AREA WILL HAVE TO BE MONITORED
FOR POSSIBLE EROSION DUE TO SOUTH WINDS OVER THE WATERS FROM WALES
TO CAPE LISBURNE. MODELS SHOW ANOTHER LOW INTENSIFYING OVER THE
NORTH CENTRAL BERING SEA ON SAT. AT THIS TIME IT LOOKS LIKE ANY
COASTAL HAZARD ASSOCIATED WITH THIS LOW WILL BE BEYOND THE DAY 4
TIME FRAME.

&&

.FIRE WEATHER...MINIMUM RELATIVE HUMIDITY MAY DROP BELOW 30
PERCENT WEDNESDAY AFTERNOON AND EVENING OVER THE EASTERN ALASKA
RANGE. THIS DROP COMBINED WITH STRONG WINDS HAS PROMPTED THE
ISSUANCE OF A FIRE WEATHER WATCH. RELATIVE HUMIDITY WILL QUICKLY
RECOVER TO ABOVE 30 PERCENT WEDNESDAY EVENING.

&&

.HYDROLOGY...NO SIGNIFICANT ISSUES.

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY FOR AKZ225.

FIRE WEATHER WATCH FOR AKZ226.

HIGH WIND WARNING FOR AKZ225-AKZ226.

SMALL CRAFT ADVISORY FOR PKZ200-PKZ215-PKZ220-PKZ225-PKZ230-
PKZ235-PKZ240-PKZ245.

GALE WARNING FOR PKZ200-PKZ210.
&&

SEP 07

DA

Event by event

1 coastal flood. Local standard time, as filed.

Coastal Flood, Srn Seward Peninsula Coast

When
September 11, 10:30 AM AKST to 9:30 PM AKST
Where
Srn Seward Peninsula Coast forecast zone
Property damage
$12,000
Reported by
Department of Highways

Alaska DOT reported washout of portion of the road at mile post 22 on Nome-Council road and water overflowing the road between mile 23 and 24 on the same road.

What these are

Coastal Flood
Flooding of coastal land by the sea, from storm surge, onshore wind or high tides.

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, September 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: 54733.