Updated: 7:00 AM AKDT on September 30, 2014
Overcast with rain showers, then a chance of rain in the afternoon. High of 52F. Windy. Winds from the South at 10 to 25 mph with gusts to 35 mph. Chance of rain 50%.
Overcast with a chance of rain in the evening, then partly cloudy with a chance of rain. Low of 39F. Winds from the SE at 5 to 10 mph. Chance of rain 40%.
Partly cloudy. Fog early. High of 48F. Winds from the North at 5 to 10 mph.
Partly cloudy. Fog overnight. Low of 32F. Winds from the NNE at 5 to 10 mph.
Mostly cloudy in the morning, then overcast. High of 46F. Winds from the NNE at 5 to 10 mph.
Overcast with a chance of rain. Low of 45F. Winds from the ESE at 5 to 15 mph. Chance of rain 70% with rainfall amounts near 0.4 in. possible.
Overcast with a chance of rain. High of 52F. Winds from the SE at 10 to 15 mph. Chance of rain 50%.
Overcast with a chance of rain. Fog overnight. Low of 50F. Winds from the SE at 10 to 15 mph. Chance of rain 80% with rainfall amounts near 1.3 in. possible.
Overcast with a chance of rain in the morning, then partly cloudy with a chance of rain. Fog early. High of 54F. Winds from the SW at 5 to 15 mph. Chance of rain 60%.
Clear with a chance of rain. Low of 46F. Winds from the South at 5 to 10 mph. Chance of rain 40%.
Mostly cloudy with a chance of rain. High of 54F. Winds from the SSE at 5 to 10 mph. Chance of rain 40%.
Partly cloudy. Fog overnight. Low of 39F. Winds less than 5 mph.
Partly cloudy. High of 50F. Winds from the NNE at 5 to 10 mph.
Clear. Low of 41F. Winds from the NNW at 5 to 10 mph.
Clear. High of 50F. Winds from the North at 5 to 10 mph.
Clear. Low of 41F. Winds less than 5 mph.
Clear. High of 50F. Winds from the East at 5 to 15 mph.
Partly cloudy with a chance of rain. Low of 45F. Winds from the ESE at 5 to 15 mph. Chance of rain 20%.
Mostly cloudy with a chance of rain. High of 52F. Winds from the ESE at 10 to 15 mph. Chance of rain 40%.
Overcast with a chance of rain. Low of 46F. Winds from the SE at 5 to 15 mph. Chance of rain 40%.
Partly cloudy with a chance of rain. High of 52F. Winds from the SE at 5 to 15 mph. Chance of rain 40%.
Clear. Low of 46F. Winds from the SSE at 5 to 15 mph.
Personal Weather Stations [Add your weather station!]
Location: RAWS KAKE AK US, Kake, AK
Updated: 4:55 AM AKDT
|Temperature: 48 °F||Dew Point: 48 °F||Humidity: 100%||Wind: North at 3 mph||Pressure: -||Hourly Precipitation: 0.00 in||Windchill: 48 °F||Graphs|
Location: Papke's Landing, Petersburg, AK
Updated: 5:34 AM AKDT
|Temperature: 49.3 °F||Dew Point: 49 °F||Humidity: 98%||Wind: Calm||Pressure: 29.94 in||Hourly Precipitation: -||Windchill: 49 °F||Graphs|
MSN Maps of:
|Temp:||Dew Point:||Humidity||Wind||Pressure||Hr Precip||-|
Southeast Alaska forecast discussion National Weather Service Juneau Alaska 542 am akdt Tuesday Sep 30 2014 Short term...the main theme of the short range forecast today is change as we see the beginnings of the first cool air mass of the fall start to descend over the northern Panhandle. But first we have to deal with the upper trough that is dragging the cool air down in the first place. The trough is currently just exiting eastern interior Alaska and heading into the western Yukon with the southern end of it extending into the northern Gulf. A 80 knots jet streak at 500 mb that is rounding the south side of the trough is not only keeping the trough deep but its left exit region has helped form a 1002 mb surface low over the northern Gulf and sparked off some showers and thunderstorms over the northern Gulf and Gulf Coast overnight. The amount of lightning detected in that area has diminished in number over the last hour or two as the jet streak moves east. Speaking of wind there is a decent band of gale force winds in the Gulf just south of the low as well this morning. As for the rest of the Panhandle, low clouds, some fog, and some passing showers are the rule of the morning. The trough will make its way southeastward through today and tonight spreading rain showers as it comes. More vigorous showers will be starting up in the northern Panhandle this morning with the southern Panhandle starting to get it this afternoon. This trough should be in the southern Panhandle by late tonight ending the rain for the north by then. Temperatures aloft with this trough are rather cold (around -30 c). That combined with the still present jet streak and some upper vorticity could keep the possibility of some thunderstorms popping valid. As such still have slight chance of thunderstorms up for the near outer coastal areas of the northern Panhandle and the near shore waters of the Gulf today. Decided to not extend it into tonight as the trough will have weakened somewhat and the main forcing will no longer be over the warm waters of the Gulf. As the trough moves southeast the winds in the Gulf will start to diminish. Westerly gales will still be present through today but should start to diminish tonight dropping below small craft by late tonight. As for inner channel winds most places will be starting out with either west or S wind directions depending on the location. With the pressure gradients ahead of the trough some areas like Lynn Canal have jumped up to a southerly small craft this morning. These higher winds will transition southward through today and most areas will start to shift to north as the trough moves by. The northern Panhandle will see this shift sometime this afternoon while areas farther south will have to wait till sometime tonight. Behind the trough things rapidly dry and clear out as a cool air mass makes its way out of the Alaska interior. Yakutat will likely have a partly cloudy but cool night. Areas in the northern half of the Panhandle will see diminishing clouds tonight. As such overnight lows will drop into the 30s across much of the northern Panhandle and may get below freezing in Yakutat and White Pass area. Also while this air mass is coming from the Arctic it is not bitterly cold as we are still early in the season. Still it has enough punch that northerly outflow winds will start up across the northern Panhandle tonight due to pressure gradient alone. However the cool air pooling in the Yukon does not appear to be deep enough to get over the mountain passes yet. So northerly winds in the canal are only expected to reach 30 knots tonight and some gusts to 35 knots are expected in Disenchantment Bay. Otherwise most other areas will only see winds of 20 knots or less by late tonight. Short range models were in decent agreement but did differ on the surface low in the northern Gulf. NAM and European model (ecmwf) seemed to have a good handle on low position and strength. The GFS was a bit too far east with it and the Gem just just a bit too weak compared to surface observation. For winds Gem and NAM seemed to have speeds down while other models were just a little weak compared to some observation. Overall few changes in the short range with the most noticeable changes being strengthen the outflow winds a bit tonight. Long term...remnants of fast moving clipper low will cross from the southern Panhandle into British Columbia Wednesday morning with some lingering showers near Hyder. Surface high pressure that is building over the Yukon under an upper level trough will track southeastward bringing dry conditions and mostly clear skies to the Panhandle. Offshore flow between this area of high pressure and a low moving into the Alaska Gulf will begin to increase late Wednesday night into Thursday. This next low has potential to be a significant system producing strong winds and substantial precipitation. As this advancing low strengthens outflow winds will increase as the pressure gradient tightens. Winds over the Alaska Gulf will also increase up to gale force as the frontal boundaries associated with the low move in. By Thursday night the front will move over the Panhandle form south to north with winds continuing to increase. Strongest winds will be along east-west oriented channels, over coastal areas and out of interior passes. Gusts up to 50 miles per hour are not out of the question. After the dry Wednesday and Wednesday night more wet weather returns and will remain through the weekend. As this incoming system incorporates the remains of tropical storm kummari it will provide ample moisture with potential for heavy rain starting Thursday night into Friday. Precipitation will taper off by the end of the weekend as the low fills and starts to exit the region. The upper level trough moving over the Panhandle on Wednesday moves cold air mass in from the Yukon over Panhandle with 850 mb temperatures in the -2 to -6 c range. Clear skies may provide enough insolation for day time temperatures to rise into the middle 50s. Overnight lows will be in to upper 20 to low 30s for the central and northern Panhandle and the upper 30s to low 40s for the south due to not only the cold upper level air but also radiational cooling resulting from clear skies. Temperatures will return to seasonal normals with the advancing front with most precipitation falling as rain but there may be enough cold air at higher elevations to produce snow. Models had good consensus on synoptic pattern through early Thursday but with larger model spectrum for temperatures. Left grids through Wednesday mostly as is due to similarity to new model runs with some lower temperatures Wednesday night. The advancing system for late in the week became more of an issue. Previously the Gem had been model of choice due to its consistency, but the newest run shifted in position and more significantly strength by dropping the low center to 975 mb. The Gem/European model (ecmwf) were closer in strength with weaker GFS/NAM but the Gem/GFS were closer with position of the low with European model (ecmwf)/NAM further west. For now bumped up winds in anticipation of a deeper low but held off on changing the low position until models come to a better consensus. Forecast confidence is average for into Wednesday night then is well below average starting Thursday. && Ajk watches/warnings/advisories... public...none. Marine...Gale Warning for pkz043-052. Small Craft Advisory for pkz012-013-022-033-036-041-042-051. && $$ Eal/prb Visit US at http://www.Weather.Gov/Juneau