textproduct: Juneau

SYNOPSIS

Key Messages:

- Snow for most of northern southeast Alaska continues through Tuesday night and into Wednesday morning.

- Warming temperatures for the end of the work week. A system looks to bring moderate to heavy rain for Friday.

- Cooler temperatures with rain changing to snow showers over the weekend.

LONG TERM.../Thursday through Saturday/

Multiple systems will traverse through the panhandle late week and through the weekend. A duo of waves extending from a weak low pushing into the northern Gulf will work into the panhandle on Thursday. However, south to southeasterly flow will bring moderating temperatures and rising snow levels. Snow will transition to rain across the northern panhandle through the day. Light rain is expected across the panhandle. Snow could linger along the northern highways, but overall accumulations should remain light. A stronger low will ride along the Aleutians towards south-central AK Thursday night into Friday. This storm has a deeper plume of warm, moist air that will spread over southeast AK, bringing moderate to heavy rain. With the rain, warming temps and rising snow levels, runoff and ponding of water in poor draining areas is possible. The rain and melting snow could also lead to rises in area streams and river, although flooding is not expected at this time.

In the wake of the front, a stacked low and colder temps will settle over the northern Gulf with multiple waves pivoting around the low into southeast AK. Shower activity driven by the colder moist onshore flow looks to change rain back over to snow for most of the panhandle, although accumulations look minor at this point.

AVIATION

A low centered in the SE Gulf of Alaska will continue to move NE over SE Alaska through period. This low will continue to bring IFR ceilings and visibility from snow for the areas north of the PASI- PAWG line. For areas south MVFR conditions will prevail with isolated pockets of IFR conditions during the overnight period. The rain snow line is expected to stay roughly in the same place over the next 24 hours, however, will wobble around a little bit which will cause precipitation types to change back and forth in the general vicinity of the PASI-PAWG line.

Looking ahead to Wednesday morning (after 18Z) precipitation along the panhandle will become more showery. However, this will coincide with a drying aloft which could cause some isolated areas of wintry mix during the morning hours. Currently, PAJN and PAGS look like the most likely terminals to experience this. Any freezing precipitation that does occur is expected to be brief and mixed in with rain and snow.

AJK WATCHES/WARNINGS/ADVISORIES

PUBLIC...Winter Weather Advisory until noon AKST Wednesday for AKZ317. Cold Weather Advisory until 3 PM AKST this afternoon for AKZ318. Wind Advisory until 9 PM AKST this evening for AKZ318. Winter Weather Advisory from 3 AM to 6 PM AKST Wednesday for AKZ318. Winter Storm Warning until noon AKST Wednesday for AKZ320>322- 324-325. Winter Weather Advisory until 3 PM AKST this afternoon for AKZ326-327. MARINE...Gale Warning for PKZ012-013-022-643-644-661>664. Small Craft Advisory for PKZ011-021-031>034-036-053-641-642-651- 652-671-672.