Area Forecast Discussion
Issued by NWS Fairbanks, AK

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
000
FXAK69 PAFG 262346
AFDAFG

Northern Alaska Forecast Discussion
National Weather Service Fairbanks AK
346 PM AKDT Wed Jul 26 2017

.DISCUSSION...
Overall, the models are in good agreement out through the end of
the week.

Aloft, at 500 mb, a 553 dam low currently over the Kuskokwim Delta
will move south and east tonight into the Gulf of Alaska. As the
low dives to the south, a upper level ridge will begin build east
across the state. This ridge will slide to the east on Friday as
an upper level low approaches the northwest coast. This upper low
will bring unsettled weather for the west coast Thursday night
into Saturday, while the ridge will persist for the eastern half
of the area.

At the surface, a 1020 mb high centered in the Beaufort Sea 100
miles east of Barrow will move east tonight and will be 150 NM
northeast of Demarcation Point by early tomorrow morning. A weak
ridge of high pressure over the central Bering Sea will move over
the west coast of Alaska by tomorrow morning. An eastward moving
weather front will stretch from the Chukotsk Peninsula to St.
Lawrence Island tomorrow morning. This front will affect the west
coast Thursday afternoon through Friday. A thermal trough
currently stretches from Eagle to Allakaket. Tomorrow the thermal
trough will stretch from Chicken to Nenana to Galena, and on
Friday will stretch from Chicken to Bettles.

Central and Eastern Interior: With the ridge building in, expect
warmer temperatures for Thursday for most of the Interior along
with less cloud cover, with the main exception being the far
southeastern Interior, where cloud cover will persist.

Isolated thunderstorms expected this evening across much of the
Interior, with the best chances right along the thermal trough.
Recent radar trends show that some of the showers may produce
brief periods of heavy rainfall and small hail. On Thursday the
thermal trough shifts to the south, so any isolated thunderstorms
should remain south of Fairbanks. On Friday isolated
thunderstorms possible south and west of Stevens Village.

West Coast and Western Interior: Some scattered showers tonight
as a low near Dillingham continues to move to the south. A
eastward moving weather front will bring rainfall to St. Lawrence
Island starting tomorrow morning. The front will move into the
Yukon Delta and the Bering Strait tomorrow afternoon and will push
into the rest of the coast Thursday night. The front Will bring
gusty winds in addition to the potential for rainfall.

North Slope: Onshore winds will help bring fog and low stratus to
areas from Barrow east tonight.



Coastal Hazard Potential Days 3 and 4...None.

&&

.FIRE WEATHER...
Isolated thunderstorms expected this evening across much of the
Interior, with the best chances right along the thermal trough. On
Thursday the thermal trough shifts to the south, so any isolated
thunderstorms should remain south of Fairbanks. On Friday
isolated thunderstorms possible for the area east of Galena and
south and west of Stevens Village. RH will remain above 40%
through Fri, except for the northeast Interior where RH will drop
to near 30% Thu and Fri. Expect temperatures on Thursday to be
warmer than today for most areas.

&&

.HYDROLOGY...
Recent rainfall will keep streams high over the Seward Peninsula
tonight but no flooding is expected.


&&

.AFG WATCHES/WARNINGS/ADVISORIES...
Small Craft Advisory for PKZ210.
&&

$$

JUL 17



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.