That Blizzard In The Midwest Was Bizarre. Here's Why

If you look closely at this fresh-fallen snow in Mankato, Minnesota
Thursday, you can see brown from Texas dust blown into the storm system
Photo via Twitter, Mark Tarello @mark_tarello

Minnesota Public Radio is calling it the Tex-Mex blizzard.

In some parts of Minnesota and South Dakota, some of the snow that fell with the blizzard that hit the region over the past couple of days had a tan, brown or orange tint to it.

You couldn't use the phrase "pure as the driven snow" in this case.

The storm system was so strong that dust from New Mexico and Texas was drawn up from the south into the cold northern flank of the storm.

The dust mixed with the falling snow to produce the off-color snow. Voila! The Tex-Mex blizzard.

Hmmm. A mix of snow and dirt. I guess you can say it was snirting in Minnesota on Thursday.

Satellite images of the vast storm system showed winds gusting to 70 mph lifting huge clouds of dust in West Texas and propelling it northward.

This storm reminded me of the Dust Bowl days of the 1930s. My late father remembered brown snow in Vermont in the 1930s as dust from the Great Plains came all the way to New England, mixing with the falling snow to give the drifts  a brown hue.

The National Weather Service/Twin Cities, Minnesota shared this
satellite image snowing blowind dust Wenesday over Texas that
drifted northward, causing brown snow in Minneota.

My husband Jeff grew up in South Dakota and he says he can remember a time or two when "snirt" fell - leaving a brownish wintry landscape. Still, this event was rare

There were other weird aspects of this storm. There is often thundersnow with this type of Plains storm. The parent system gets so strong that thunderstorms develop in the heavy snow bands.

However, this storm had an incredible amount of lightning, and there were reports of thundersnow with frequent lightning for two days.

The National Weather Service office in Aberdeen, South Dakota urged people to stay indoors there was so much lightning.

Severe thunderstorms are common during strong Plains systems like this one, but the severe weather almost always happen in the warm, moist air to the southeast of the storm's center.

In this case, there weren't that many severe thunderstorms in the warm sector. But very oddly, some severe thunderstorm warnings for large hail and gusts to 60 mph were issued in areas getting snow and sleet. That's very strange.  There were some reports of one-inch diamter hail in Minnesota and Wisconsin.

NEXT STORM OMINOUS

Areas in yellow, orange and especially red are at risk of severe thunderstorms
and tornadoes Saturday. Some of the tornadoes might be strong
and long-lasting. 

The next big storm system will develop tonight and tomorrow in Texas. This one looks more conventional, for the lack of a better word, than the last one with the "snirt" blizzard in the Plains. But this new storm seems much more dangerous.

As mentioned yesterday, this storm threatens a nasty tornado outbreak in the South over the weekend.  

If anything, latest forecasts up the chances of tornadoes, some possibly strong this weekend. The lower Mississippi Valley is the target Saturday, with the highest risk in northern Louisiana and southern Arkansas. 

Severe thunderstorms and possible tornadoes will spread into the Ohio and Tennessee Valleys and the Southeast Sunday. It's Palm Sunday and churches will be busy. I'm no theologian, but I think God would want churches in these areas to have weather radio tuned in during services. God would also want congregations to have a plan to get to a safe area if a tornado warning is issued.

The storm system will reach New England Sunday night and Monday. Here in Vermont, it still looks like the storm could dump an inch or so of rain on us, and melting snow from the mountains will add to the runoff.

I suspect the National Weather Service will issue flood watches for the region that will go into effect Monday.

Believe It Or Not, A Dust Storm In Greenland

Satellite view of a dust storm in Greenland of all places. Yep, they
can happen there and it's NOT global warming

We all think of Greenland as an incredible cold, forbidding place. It's basically an enormous pile of ice.

But as the Weather Channel points out, you can actually get dust storms up there. A satellite passing overhead recently took a photo of one.

These dust storms aren't anything huge like you see in the Desert Southwest or near the Sahara Desert or something like that. But they do get cranking up in Greenland.

They get going close to the coast, where snow and ice usually melt away during the summer.

Here's how it all happens:

Water from melting glaciers flows into a flood plain, then either recedes or evaporates. The sediment left behind consists of a very fine powder called glacial flour, which is created by the grinding of glaciers and pulverizing rock.

When the glacial flour dries out, strong winds can send it airborne, creating these far northern dust storms.

Unlike seemingly everything else that goes on in Greenland, which seems to be the go-to bellwether for climate change, the dust storms have nothing to do with global warming.

These little Greenland dust storms have been reported over many decades. Satellite photos rarely capture them because it's usually too cloudy to see them. This time, the skies cleared and the satellite got a nice shot of this dust storm.

Geeky But Wicked Cool NASA Video Shows Sea Salt, Smoke And Hurricane Interaction

An image from NASA's visualization of aerosols in the
atmosphere during the hurricane season. The blue and
white swirls over the oceans are hurricanes and other
storms concentrating sea salt in the atmosphere. The ghostly
white stuff in western North America is smoke from wildfires.

I just came across a cool visualization video that shows how aerosols in the atmosphere such as sea salt, smoke from wild fires and dust from the Sahara Desert interact and move around the world.

I know, I know, it sounds just a bit dull and science-y, but definitely watch the video at the bottom of this post. It's mesmerizing. Even to people who aren't weather geeks.

Says NASA:

"This visualization uses data from NASA satellites, combined with mathematical models in a computer simulation (that) allows scientists to study physical processes in our atmosphere. By following the sea salt that is evaporated from the oceans, you can see the storms of the 2017 hurricane season."

That is perhaps the most striking feature of the video. You can see high concentrations of salt gathered up in strengthening and strong hurricanes like Harvey, Irma, Maria and Ophelia.

A unique feature of Ophelia that you can see in the video is how it sucked up sea salt, like all hurricanes do, but also Saharan dust and smoke from deadly wildfires in Portugal, and that helps explain the odd smoky skies over Britain as Ophelia and its post-tropical remnants blustered through.

Another fascinating part of the video is how you can see wildfires break out in western and northern Canada, and in the western United States, then watch the smoke blow across the continent and over to  Europe and Asia.

The erupting wildfires are seen as dense pinpoint plumes of smoke before the smoke and ash disperse over wide areas.

The video sure helps explain why the sky was so often hazy and smoky over Vermont in August and September. A lot of wildfire smoke blew our way.

Smoke from the increasing trend of wildfires is raising health concerns as all the additional smoke from longer and more intense fire seasons is affecting human health, especially in areas relatively close to the fires.

You'll probably want to watch the video repeatedly to catch all the activity going on with the hurricanes, salt and smoke.

Here's the video:

Cool Time Lapse Of Nighttime Arizona Storm, Dust

The ever-reliable Arizona photographer and videographer Mike Olbinski captured this scene around Phoenix earlier this month of nightime lightning, dust storms and clouds, along with traffic, airliners and city lights in this mesmerizing time lapse video:

More Wild Photos Of The Nation's Week Of Extreme Weather

You name it. Tornadoes. Fires. Floods. Hail. Dust. Sandstorms. Snow.

From @basehunter via Twitter. A scary, spinning supercell
thunderstorm that was producing an EF-4 tornado in
Louisville, Miss. on Monday. Add caption

The nation has been clobbered by extreme weather this week, and photos and videos of the chaos are continuing to surface.

This post contains a few more of the disaster movie type scenes we've seen this week.

This post contains a few more examples of disaster movie type scenes we're seeing this week.

A collapsed garage in the Florida panhandle after
epic flooding early Wednesday.

From @bearlysoberrr on Twitter, flooding inside Pensacola
State College on Wedneday. 

The opposite extreme: The aftermath of high winds
and a dust storm in Kansas this week, via @kkqtopeka on Twitter.