Your Alaska Link Weather Blog
Volcanoes here in Alaska are like tornadoes in the Midwest. Its just kind of the usual. Well today, Veniminof Volcano erupted, nothing to worry about. Not Mt. St. Helens status or anything even similar to that but it is having an impact on a couple of towns toward the Alaska Peninsula and the Aleutian chain. Here was the image from Perryville this morning.
You can see just to the left of the tower and up on the hill some smoke and ash coming out of the mountain. Currently it is code ORANGE which means - Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, time frame uncertain, OR eruption is underway with no or minor volcanic-ash emissions [ash-plume height specified, if possible].
It does not look like it will have a serious eruption, but the National Weather Service has put out a special statement warning the surrounding cities of Port Moller, Nelson and Bear River could see some light ash falls this afternoon. If anything changes we will of course keep you updated!
With so many mountains in Alaska we have some exteremly unique features and weather phenomenon that goes on around here. One of those is certain types of clouds! Here is a photo today of Mt. McKinley with some lenticular clouds just sitting at the summit of the mountain.
How do these clouds form? Its actually quite interesting.
The first ingredient is stable moist air flowing over the tops of the mountains. Clearly in Alaska we have plenty of that... On one side of the mountain, air needs to rise and this gives it cooling just enough to condensation to begin and a cloud to form. Once the wind crosses over the mountain it carries the cloud with it up and over. However when the wind decends on the other side of the mountain it warms and the cloud droplets evaporate keeping the cloud on top of the mountain.
Here is a better example of a lenticular cloud from a mountain in New Zealand. Mt. Rainer is also famous for having some incredible lenticular cloud formations. These clouds can also be refered to as the "mothership".
So watch for those Lenticular clouds!
Hello everyone and welcome to our new weather blog! Here I am going to try and be insightful, scientific but most importantly we will have some fun. If you ever have a story idea or want to let me know what is going on in your area let me know! I would love to write about it! However, our first topic obviously has to be about the heat… Who ever thought we would be breaking heat records this year? Not me….
Anchorage has had one of the warmest summers on record. Currently sitting at 4th warmest summer we have had 39 days now over 70 degrees and 19 of them coming in July. That 19 tied the record for most days in July over 70 degrees and we also just broke the streak for most consecutive days over 70 degrees with 15! The previous record was 13 set back in 2004. Now our 39 days over 70 degrees is only 10 days shy of breaking the all-time record for number of days over 70 at 49 days. I know it’s a lot of numbers… I’ll break it down for you.
Now in Fairbanks they just tied their record for most days over 80 degrees at 30! They will have a chance the rest of the week to beat it!
So what caused all of this? Well we had what is called a blocking high or an Omega Blocking High sitting over the Bering Sea for the last couple of weeks. A lot of times the upper level atmosphere affects what happens at the surface. In this case the high pressure in the upper atmosphere was able to steer several systems clear. We actually had several centers of low pressure pass right over Anchorage and South Central, however they did not produce rain because of how much influence the upper level high had.
In our case it took several days for this high pressure to even move east at all. The Aleutians have been extremely wet the last couple of weeks as system after system have been moving from south to north straight across them. The jet stream is now pushing the high farther east and south which is why Juneau is now experiencing nice warm weather and conditions over the southwest part of Alaska are deteriorating quickly.
The heat was fun while it lasted! Of course we could see more nice weather into August but only time will tell!