Alaska, 2007

High Wind in Alaska, April 6, 2007

April 6, 2007 · NWS AJK · 3 events in 3 counties and zones

A storm force low developed in the Western Gulf of Alaska on Thursday, 4/6. A secondary low developed on the front that had moved into the Eastern Gulf Thursday night becoming 970 MB off the Queen Charlotte Islands.

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
3

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 AJK wrote it up.

A storm force low developed in the Western Gulf of Alaska on Thursday, 4/6. A secondary low developed on the front that had moved into the Eastern Gulf Thursday night becoming 970 MB off the Queen Charlotte Islands. This second low recurved back into the Central Gulf on Friday afternoon with a very strong front moving onto the SE Alaska Coast. This storm rapidly weakened in the western Gulf late on Friday night 4/6.

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 Juneau, AK wrote its last area forecast discussion before the first event at Apr 6, 5:30 AM AKST, 4 hours 30 minutes earlier.

Area forecast discussion, Apr 6, 5:30 AM AKST, 4 hours 30 minutes before
SOUTHEAST ALASKA FORECAST DISCUSSION
1130 AM ADT FRI APR 6 2007

.SYNOPSIS...
.SHORT RANGE...LARGE SCALE LOW CONTINUES TO MOVE ACROSS THE
CENTRAL GULF OF ALASKA. THE MODELS APPEAR TO BE IN REASONABLY
GOOD AGREEMENT WITH BOTH THE TRACK AND INTENSITY OF THE LOW. ON
SATELLITE IMAGERY...THE LOW APPEARS TO BE TAKING MORE OF A
NORTHWEST TRACK THAN WAS EARLIER ADVERTISED BY THE MODELS. THIS
IS LEADING TO DECREASED CONFIDENCE IN THE HIGH WIND EVENT PANNING
OUT AS EXPECTED. BUOY DATA ARE ONLY SHOWING STORM FORCE GUSTS
NEAR THE LOW CENTER...AND GALE FORCE GUSTS NEARER TO THE COAST.
AT THIS TIME...HOWEVER...THERE IS NOT SUFFICIENT CONFIDENCE TO
REMOVE ANY OF THE ADVISORIES OR WARNINGS THAT ARE NOW IN PLACE.

THE WINDOW FOR THE STRONGER WINDS APPEARS TO BE RATHER BRIEF AS
THE LOW IS EXPECTED TO PULL BACK TO THE NORTHWEST THROUGH THE DAY
AND OVERNIGHT HOURS. SURFACE BOUNDARY CONTINUES TO MAKE ITS WAY
TO THE NORTH ACROSS THE PANHANDLE. SOME SITES ACROSS THE FAR
SOUTHERN PANHANDLE HAVE CLIMBED INTO THE LOWER 50S. THE BOUNDARY
WILL CONTINUE TO THE NORTH...AND WARMER AIR WILL SPREAD ACROSS
THE PANHANDLE.

CATEGORICAL POPS LOOK TO BE A GOOD BET AREAWIDE TONIGHT AND EARLY
SATURDAY AS AN ONSHORE COMPONENT TO THE WIND REMAINS. QPF VALUES
NEAR GUSTAVUS LOOK TO BE A BIT OVERDONE...LIKELY DUE TO THE
PRESENCE OF MOUNT FAIRWEATHER. RAINFALL TOTALS LOOK TO BE MAINLY
LESS THAN AN INCH...BUT ISOLATED AREAS COULD SEE A LITTLE BIT
MORE.

.LONG RANGE...HI AMPLITUDE LONG WAVE PATTERN IN PLACE WITH
CYCLONE ANCHORED JUST SOUTH OF ALEUTIAN CHAIN AND RIDGE AXIS
EXTENDING FROM ARIZONA TO NW TERRITORIES. MOIST SOUTHERLY FETCH
INTO SE AK FROM SUBTROPICS PERSISTS SAT NIGHT THROUGH TUE. GLOBAL
MODEL FCSTS FOR THE SEVEN DAY PERIOD THROUGH LATE NEXT WEEK SHOW
THE RIDGE AXIS FLATTENING IN TIME AND THE ALEUTIAN CYCLONE
WEAKENING AND SHIFTING A BIT FARTHER EAST. SUCH A CHANGE WOULD
REPOSITION A STRONG WESTERLY JETSTREAM FARTHER SOUTH TO ABOUT 40N
LEAVING A LIGHT BUT COOLER WESTERLY FLOW ACROSS THE GULF AND INTO
SE AK. HAVING THE JET THAT FAR SOUTH WOULD ALSO MEAN A TREND
TOWARD DRIER WEATHER BY MIDDLE OF NEXT WEEK. TEMPS WILL BE AT OR
ABV AVE LATE THIS WEEKEND AND EARLY NEXT WEEK BEFORE SOME COOLING
TAKES PLACE STARTING TUE.

ANIMATION OF THE WATER VAPOR SATELLITE IMAGERY FRI MORNING
SUPPORTS THE MODEL DEPICTION THAT THE MAIN CIRCULATION CENTER IS
IN THE NORTHERN GULF NEAR 50N 170W. NEXT FRONTAL WAVE FOR EARLY
SUNDAY MORNING IS ROUNDING BOTTOM OF THE ALEUTIAN LOW AND IS FCST
TO SLING N THEN NW JUST OFF THE SE AK COAST SAT NIGHT/SUN
MORNING. GFS SHOWS YET ANOTHER SHORT WAVE TAKING A SIMILAR TRACK
EARLY TUE BUT IT PUSHES INLAND NEAR DIXON ENT RATHER THAN CURL
FARTHER N LIKE ITS PREDECESSORS. THIS IS CONSISTENT WITH FCSTR
THINKING LAST NIGHT AND WOULD BE START OF A FEW DRIER DAYS WITH
THE STORM TRACK SOUTH OF THE PANHANDLE AND WEAK SFC HIGH PRESSURE
OVER THE YUKON. TA

.AJK...WATCHES/WARNINGS/ADVISORIES
PUBLIC...HIGH WIND WARNING TIL 6 PM AKZ027>028 HIGH WIND WARNING
      TIL 9 PM AKZ023 HIGH WIND WARNING TIL MIDNIGHT AKZ022 WIND
      ADVISORY TIL 9 PM AKZ026 WIND ADVISORY TIL MIDNIGHT
      AKZ020-021-024-025 WIND ADVISORY TIL 3 AM AKZ018>019
MARINE...STORM WARNING PKZ310-041>043-051>052 GALE WARNING
      PKZ011>013-021-022-031>036 SCA PKZ053

In the hours before

Local storm report, Apr 6, 9:56 AM AKST, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JUNEAU AK
356 PM ADT FRI APR 06 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0156 PM     HIGH SUST WINDS  HYDABURG                55.21N 132.82W
04/06/2007  M60 MPH                             AK   AWOS

            WIND GUST

&&

PSS

Event by event

3 high wind. Local standard time, as filed.

High Wind, Dixon Entrance to Cape Decision Coastal Area

When
April 6, 10:00 AM AKST to 4:00 PM AKST
Where
Dixon Entrance to Cape Decision Coastal Area forecast zone
Measured
52 kt (60 mph) measured gust
Reported by
AWOS

Hydaburg had a measured gust of 60 MPH at 1256 on April sixth.

High Wind, Salisbury Sound to Cape Fairweather Coastal Area

When
April 6, 10:00 AM AKST to 4:00 PM AKST
Where
Salisbury Sound to Cape Fairweather Coastal Area forecast zone
Measured
52 kt (60 mph) estimated gust
Reported by
Unknown

No observational reports were found for High Wind, but on Friday, 4/6, NCEP analyses conclusively indicated that gusts in excess of 60 MPH occurred in some areas on the immediate coast due to the extreme pressure gradients depicted.

High Wind, Cape Decision to Salisbury Sound Coastal Area

When
April 6, 10:00 AM AKST to 4:00 PM AKST
Where
Cape Decision to Salisbury Sound Coastal Area forecast zone
Measured
52 kt (60 mph) estimated gust
Reported by
Unknown

No observational reports were found for High Wind, but on Friday, 4/6, NCEP analyses conclusively indicated that gusts in excess of 60 MPH occurred in some areas on the immediate coast due to the extreme pressure gradients depicted.

What these are

High Wind
Sustained non-thunderstorm winds of 40 mph or more for an hour, or gusts of 58 mph or more.

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, April 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: 25310, 25311, 25312.