The remnants of Typhoon Ampil brought strong and gusty winds up to 55 mph to the West Coast. These strong winds resulted in water levels to rise along the southern Seward Peninsula.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
The episode as NWS AFG wrote it up.
The remnants of Typhoon Ampil brought strong and gusty winds up to 55 mph to the West Coast. These strong winds resulted in water levels to rise along the southern Seward Peninsula.
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 Aug 21, 2:54 AM AKST, 9 hours 6 minutes earlier.
Northern Alaska Forecast Discussion
National Weather Service Fairbanks AK
354 AM AKDT Wed Aug 21 2024
.SYNOPSIS...
The main story today is the remnants of ex-typhoon Ampil heading
to the West Coast. The forecast is on track for wind gusts of 60+
mph for portions of the West Coast, periods of rain and minor
coastal flooding.
&&
.DISCUSSION...
Upper Level Analysis...
The remnants of ex-typhoon Ampil are located west of St. Lawrence
Island as a 527 decameter low. A front associated with it is
moving east over the Seward Peninsula, with a warm front farther
east over the mainland. Transient ridging over the Interior will
exit east this afternoon as a front moves in from the west.
General troughing then persists over the state through the
weekend.
Surface Analysis...
A 971 mb low in the North Central Bering will trek northeast
towards the Bering Strait today and into Kotzebue sound as a 990
mb low tonight. Strong southwest winds develop in St. Lawrence
Island this morning and continue to the Seward Peninsula this
afternoon. The leading edge of the rain from a front associated
with the low is currently stationed from the Western Brooks Range
south to McGrath. A 1021 mb high over the Central and Eastern
Interior will exit to the east as the front moves through from the
west.
Central and Eastern Interior...
A chilly morning in the Eastern Interior today as some spots
dropped into the mid to upper 20s. Elsewhere, wake-up temperatures
will be in the upper 30s to low 40s. Clouds will thicken through
the day as a front approaches from the west with increasing
chances for rain showers this afternoon. South to southwest winds
will be on the rise with gusts to 45 mph possible along the
Steese, Elliott and Dalton Highway Summits this afternoon through
Thursday evening. Wind in the Alaska Range will be around 30-45
mph from the south through this evening. Otherwise, Rain showers
are expected through the night with the exception being the Yukon
Flats where it remains drier than most. Even the SE Interior will
get some much needed rain tonight. Otherwise, a wet and cool
pattern persists through the end of the week.
West Coast and Western Interior...
No change in the ongoing forecast as a front from the remnants of
ex-typhoon Ampil moves east through the Western Interior with rain
this morning. South to southwest wind will increase this afternoon
in the Western Interior with wind advisories posted. Winds are
increasing this morning from St. Lawrence Island to the Bering
Strait Coast where gusts to 60 mph are possible today. Southwest
gale force winds move through the Norton Sound this afternoon
bringing minor coastal flooding which will peak this
afternoon/evening around 4-8 feet above the normal high tide line.
Westerly onshore flow will cause a gradual drop in sea levels on
Thursday, then we see a more pronounced drop to near normal levels
by Friday.
North Slope and Brooks Range...
A Bering Sea Low is currently bringing a front with rain in the
Western Brooks Range. This front moves east with rain and some
snow above 1500 feet this morning. Though any snow will change to
mainly rain this afternoon. Lighter rain is expected over the
Western North Slope this afternoon. The low will trek northeast
tonight into tomorrow with another chance for snow above 4000 feet
in the Brooks Range. Otherwise, as the low pushes off the coast,
onshore flow will provide stratus, fog and rain showers to much of
the North Slope tomorrow afternoon through Friday. Colder
temperatures arrive Friday and persist through the weekend.
Extended Forecast Days 4-7...
Troughing overhead will provide cooler weather with showers
through the weekend. The troughing will try to break down on
Monday with weak ridging, and the potential for drier weather by
the beginning of next week.
Coastal Hazard Potential Days 3 and 4...None after days 3, see
current coastal flood advisories on the West Coast for the
ongoing coastal storm.
&&
.FIRE WEATHER...
Wet and cool weather starts back up today with the trend
continuing through the weekend.
&&
.HYDROLOGY...
High waters continue to come down the Koyukuk from the recent
heavy rains, with water levels at or near bankfull. Water levels
should crest around 62.5 feet this afternoon on the Koyukuk in
Hughes as the water continues to flow downriver. Minor flooding in
the basin along smaller streams and tributaries should end this
afternoon as well.
More rain moves in with the remnants of an ex-typhoon and will
bring rainfall to the Brooks Range, with 2 to 3 inches of rainfall
expected across the W Brooks Range, and 1 to 1.5 inches over the
Central Brooks Range. As a result the Kobuk River, which is
currently cresting near Kiana around 56 feet, will gradually rise
once again. Minor rises in the Koyukuk should be expected later
this week as water drains from the Brooks Range. Smaller streams
and tributaries are expected to rise or remain high as well. Currently,
no flooding is projected.
&&
.AFG WATCHES/WARNINGS/ADVISORIES...
AK...High Surf Advisory for AKZ801-815.
Wind Advisory for AKZ828>830-852.
Flood Watch for AKZ812-831-832.
High Surf Advisory for AKZ820.
High Wind Warning for AKZ821-827.
Coastal Flood Advisory for AKZ821-822-824-825.
Wind Advisory for AKZ831-832-834.
PK...Gale Warning for PKZ801.
Gale Warning for PKZ802-853-854.
Gale Warning for PKZ803.
Gale Warning for PKZ804-805.
Gale Warning for PKZ806.
Small Craft Advisory for PKZ807.
Small Craft Advisory for PKZ808-809-855.
Gale Warning for PKZ810-811-856-857.
Gale Warning for PKZ816-817.
Gale Warning for PKZ850.
Gale Warning for PKZ851.
Gale Warning for PKZ852.
Small Craft Advisory for PKZ858.
&&
BiancoSpecial Weather Statement National Weather Service Fairbanks AK 1025 AM AKDT Wed Aug 21 2024 AKZ827-220630- St Lawrence Island- Including Gambell and Savoonga 1025 AM AKDT Wed Aug 21 2024 A Bering Sea Low associated with the remnants of Typhoon Ampil, is moving north of St Lawrence Island and will move through the Bering Strait this afternoon. Strong southwest from the northwest this evening and overnight. This dynamic fetch will enhance the potential of coastal flooding along the West Coast south of the Bering Strait today into Thursday. Sea levels are expected to reach one to three feet above normal resulting in minor coastal flooding.
Preliminary Local Storm Report
National Weather Service Fairbanks AK
1057 AM AKDT Wed Aug 21 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1000 AM Coastal Flood Gambell 63.78N 171.72W
08/21/2024 Nome AK Public
Possible report of minor coastal flooding
relayed to us, also mentioned power was out.
&&The national radar mosaic for the moment the first event began.
1 coastal flood. Local standard time, as filed.
Water began rising during the morning hours of the 21st. Minor flooding of low-lying areas was observed in Golovin, including the old runway.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Alaska in 2024Every state in 2024This day in weather historyWarnings in Alaska, August 2024
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: 1210833.