Fairbanks will officially see two sunsets today. One of our many quirks.
Tag Archives: NWS
Minus Twenty
Sunday morning was the first day of the season for it to drop below zero at the cabin.
Thursday morning we saw our first -20F.
Volcanos & Earthquakes with Tsunami & Emu Warnings
Mount Shishaldin on Unimak Island has been restless for a while. A USCG plane flying by noticed molten lava at the crater last week. Finally, on Friday the volcano erupted with a plume of ash that reached 15,000 feet. By Saturday evening, the eruption had earned a Level Red Warning, which had returned to Orange by Sunday night.
I have not heard of a major disruption to air traffic yet.
Great Sitkin, further out on the Aleutian Chain is also at Warning Level Orange.
Late on Saturday night, a 7.2 magnitude earthquake was recorded 55 miles southwest of Sand Point, Alaska. That triggered a Tsunami Warning from NOAA and the NWS for early Sunday morning. Luckily, waves of only 6″ high were reported, and the warning was cancelled long before I even woke up in the Interior of Alaska.
By Sunday evening, the Alaska Earthquake Center had recorded roughly two dozen aftershocks from the M7.2 quake, the largest at M5.7.
Not to be left out, the city of Anchorage had a gang of emus on the loose. No word on where the emus escaped from. At one point, they were reportedly spotted near the Campbell Airstrip, which I can say from experience, is a great place to start a hike. I also read through the comments on the post, and I must say that not one was remotely helpful on catching a runaway emu.
River Watch
It’s the time of year where we all watch the rivers up here. Break-up in Fairbanks has lost the drama it had in the early days, before the flood control tamed the Chena River. There was a time when the Cushman Street bridge was rebuilt every year after the ice took it out.
Elsewhere across Alaska, the shifting ice still packs a punch. The ice jam in the above photo has caused flooding 90 miles upstream. Tanana, Alaska has experienced minor flooding from this. Communities all along the Yukon, from Eagle to Buckland have experienced severe flooding.
The Kobuk River has been added to the flood stage list. An ice jam could bring flooding from Kobuk to Ambler if the ice doesn’t break up soon.
In Fairbanks, we saw our first 80F degree day this season on Friday. It broke a record for not just the high temp of the day, but also broke a record for the highest low temperature for the day. It was the earliest 60F degree low on record for Fairbanks. It was certainly noticeable when I went out in the morning.
Green-up Day
The phenomenon known as Green-up occurred on May 16 this year. In one day, the tree buds burst open, giving the hills around Fairbanks a very sudden green tint.
It’s eight days later than the average green-up.
Launching balloons
I’ve been out at Poker Flats, which is outside Fairbanks, on several occasions when they were launching weather balloons. These days, most weather balloons are filled and launched by robotic launchers called autosondes, which takes some of the romance out of weather balloons, but that’s not the purpose of this post.
In the United States alone, there are 92 sites that launch two balloons every day of the year. There are over 800 locations worldwide doing the exact same thing. Here in Alaska, we have 13 sites that launch weather balloons twice a day, every day, and always at the same time: Midnight and noon Greenwich Mean Time.
A small collection of weather instruments, called a radiosonde is attached to the balloon which collects data and transmits that data back to the NWS as it rises. A weather balloon makes it to roughly 100,000 feet before it pops and falls back to earth. These days, radio balloons are highly biodegradable.
The first weather balloon with a radiosonde launched from Fairbanks in 1933. They started launching two balloons a day in 1941. I’ll let you do the math, but no matter how you figure it, that’s a lot of balloons.
We call this mild:
The forecast calls for another week of mild temperatures across Alaska’s Interior.
Chilly Chicken
A deep freeze swept over much of Interior Alaska this week. Not only was Chicken the cold spot in the state with a low of -57F, their high ended up being only -50F. They hold the spot as the first location in Alaska to officially see a high of minus fifty or colder this season.
By comparison, the thermometer outside the cabin read a balmy -33F Monday morning.
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