June 9, 2012, North Dakota Chase Bust: Buy My Elephant

You can’t find a more quintessential border town than Pembina. It’s the last US town on I-29 before you hit Canada two miles to the north; and just across from it, on the eastern side of the Red River of the North, lie Minnesota and Pembina’s border-town twin, Saint Vincent. Tucked away in the northeast apex of North Dakota, Pembina is as far poleward as you’re ever likely to chase storms in the continental United States unless you find yourself pursuing wedges around Angle Inlet, Minnesota.

Last Saturday afternoon, Rob Forry and I gassed up at a filling station on the western edge of Pembina and contemplated the sky with fellow storm chasers Jim Parsons and Brian Spencer. The forecast models had been painting a frustrating picture, with a surface low moving northeast up into Manitoba and dragging southeast winds with it, leaving those of us without passports–which included me–with helicity-killing southwesterlies by the time storms started firing later in the day.

However, the HRRR was offering a glimmer of hope, stalling the warm front across the northernmost counties and maintaining southeasterly winds slightly south of the border as late as 01z. So there we were in Pembina in the mid-afternoon, gazing at a patch of altocumulus. On the way up, we had passed through an outflow boundary from storms earlier that morning, and now a brisk northeasterly wind reminded us that we had left the warm sector behind us.

The four of us grabbed lunch at a local restaurant, then parted ways. Most chasers were congregated well to our south near Devil’s Lake, where previous forecast soundings had looked pretty compelling. Unquestionably, instability would be present. Helicity and capping were the question marks, and even as we backtracked southward and then west, I had a hunch that we would eventually wind up playing back to the north.

In the tiny prairie town of Edmore–how do people earn a living in such remote places?–Rob and I found a shady place to park and wait for things to develop. We had passed back across the frontal boundary, and the temperature was warm, the winds were blowing from the southeast, and overhead, billowing towers kept thumping against the stout cap. We hung out in our new location for maybe half an hour with John and Brian, who had rejoined us, then took off. During that short time, the surface winds had veered to the south, so we headed back north on SR 1 to where the winds were once again blowing from the southeast and then parked.

Ten or fifteen minutes passed. A dot materialized far down the road to our south and grew larger, expanding and dividing into two rapidly approaching vehicles. It was our friends Ben Holcomb and Adam Lucio, in company with a small group of other chasers I had never met. They pulled aside and we all stood around and yakked for a while. Ben was suffering from a nasty ear infection which had hit him the previous night, and while he had managed to score some antibiotics, he was still pretty miserable. But with a friend visiting him from Finland for the express purpose of chasing storms, he was sticking doggedly with the chase. Must come from having lived all those years in Michigan, where a chaser’s character is shaped by supercell deprivation.

We hung with Adam, Ben, and their crowd for a while, then continued north. The surface winds had once again veered, and surface obs showed them blowing from the south-southwest not very far south of us. It seemed to me that if we were going to have any chance at all of seeing a tornado–and admittedly, chances were slim to begin with–it would be along the northern tier of counties in the instability axis.

At the town of Langdon, we headed west, and it wasn’t long afterward that we witnessed a tower finally break through the cap directly overhead and blossom into a full-fledged storm. We tagged with it for a few minutes, but with just a couple miles between us and the border, we didn’t have much room to play with, so we let it go for the chasers in Canada to try their luck with.

Meanwhile, another storm was intensifying to our south, and we headed east to intercept it. From there on, storms began to multiply, but there’s no point in going into detail. The cloud bases were higher than I had expected; the ambient surface winds, which had been brisk all day, seemed to sigh away into nothingness; and the storms were outflow-dominant and just garden-variety severe. Rob and I encountered a little half-inch hail, and at one point a nearby CG which I never saw struck behind me, producing a LOUD thunderclap that sounded like a rifle shot and scared the crap out of me.

But it wasn’t the severity of the storms that made this trip memorable. It was that minimalist landscape stretching its sameness in every direction out into infinity; and it was the dome of the sky, spreading its cerulean canvas from horizon to horizon over tiny communities scattered far apart across the prairie. There, a thousand miles from my Michigan hometown and over 100 miles farther north than the northernmost point of the Keweenaw Peninsula, that sky-canvas, daubed by the Great Painter with the texture and tincture of clouds and light, rendered the panoramic emptiness of North Dakota dramatic and beautiful.

The drive back on the following day was predictably long and, for the most part, uneventful. These last two photos mark what was probably the highlight of the return trip (barring dinner at a truly fabulous sushi restaurant in Janesville, Wisconsin). Rob snapped them for me at a gas station somewhere in Wisconsin or maybe Minnesota, I forget where. But the place wouldn’t be too hard to find again. It’s probably the only gas station in America that has a sculpture of a life-size pink elephant wearing black glasses standing at the edge of the parking lot.

Naturally, Rob and I both needed to pose in front of so imposing a creature, and it wasn’t until I processed the pics afterward that I noticed the realtor’s “For Sale” sign on the left. Really, though, it’s my sign. Would you like to buy my elephant? I’ll make you a great deal. It’s a very nice elephant, well-behaved and in excellent health except for a slightly embarrassing digestive disorder for which I’ve found no remedy other than to … well, you can see how I’ve handled it.

September 3, 2011, Outflow Boundaries

Yesterday morning my friend Kurt Hulst called to say, “Grab your camera. There’s a great shelf cloud coming your way. It passed my location before I could get a picture.”

Okay, then. My apartment faces east, and all I could see was blue sky. Not even a hint that a storm might be approaching from the west, and usually one gets at least some kind of a clue. But I snatched up my camera and car keys regardless and headed outside.

Yes, there it was–a hazy arcus cloud moving my way from the west and northwest. I hopped in my car, with the intention of finding a better view for taking photographs than my parking lot afforded. But the cloud was moving faster than I realized, and by the time I reached 108th Street, it was almost on top of me. So, with the wind kicking up flurries of leaves in front of me, I headed east, thinking to put a little distance between the shelf cloud and me.

Several miles down the road, I turned north, parked by a buffalo farm, stepped out of my car to get a look, and realized immediately that my cause was lost. The cloud was right overhead. It had to have been moving at least 60 mph. So much for weather photos. Within seconds, I was looking at the backside of the arcus, and it wasn’t particularly photogenic.

For that matter, there wasn’t much to it. No ensuing rain, no lightning, no thunder, no storm at all, just blue skies. I can’t speak for other parts of the country, but here in Michigan it is an odd thing to observe an impressive-looking shelf cloud with absolutely nothing behind it! The cloud evidently had formed as the isolated effect of cold outflow from dissipated storms back in Wisconsin, in conjunction with a closer, severe-warned MCS to the north. Back at home, I could see the outflow boundary arching southwest all the way down into Indiana and moving rapidly east.

Yesterday seemed to be the day for such phenomenon to be clearly defined on the radar. Later in the afternoon, GR3 showed a similarly highly distinct outflow boundary down in northern Indiana. The source of this one was easy

to see: storms to its northwest and north. It looked pretty vigorous, and I wondered if it was putting on a show similar to what I had witnessed.

As an item of curiosity and an example of a highly defined outflow boundary–I suppose you could call it a runaway gust front–I captured a screen shot. Click on the image to enlarge it.

Freak Tornado in Wisconsin

A weak cold front has slowly been working its way through Michigan today, with storms firing ahead of it in a very soupy warm sector. Ugh! With temperatures the past several days ranging from the upper 80s to 90 degrees and dewpoints as high as 73 here in Caledonia, it’s about time things cooled off and dried out a bit.

Unfortunately–or fortunately, depending on your point of view–all that lovely moisture has been wasted on insipid lapse rates and humdrum wind fields. What can you do with 500 mb winds of 25 knots or less? Answer: not much.

So what’s with that red dot in Wisconsin in yesterday’s storm reports? Not only did a tornado occur near the town of Cambria, but from the looks of the YouTube videos I saw, it was fairly impressive. Certainly those were more than momentary spin-ups which that Little Storm That Shouldn’t Have put down.

How on earth did it do that? There was nothing happening synoptically that suggested even a remote possibility of tornadoes. So when that puny cell across the lake from me went tornado-warned on GR3 yesterday, I just shrugged it off. Obviously a fluke, some weak Doppler-detected rotation, signifying nothing.

Just goes to show how Mother Nature can mess with your head. According to the NWS office in Milwaukee, that little stinker put down a tornado that lasted 14 minutes, traveled four miles, and did EF1 damage. The level 2 velocity couplet on it was unmistakable. Here’s the full writeup by KMKX, complete with radar images and a photo of the storm right after the tornado had lifted.

Storm chaser Scott Weberpal speculated on Stormtrack that there may have been some kind of interaction between an outflow boundary left by earlier convection. I can’t imagine any better explanation for why what should have been a pussycat of a pulse-type summer storm turned into a barn wrecker. Had the storm gone tornadic farther east, the lake breeze might have been suspect, but the cell was well inland from Lake Michigan.

Today I noticed a couple storms over in the Flint area displaying weak rotation on the radar, and one of them took on that telltale supercellular shape. Given the anemic upper winds, I’d normally have instantly written them off, but after yesterday…well, I watched and wondered, not expecting anything and therefore not disappointed when nothing happened, but still curious. What might happen if any cells firing in that vicinity moved into the Huron lake breeze zone, where the veering surface winds were liable to back?

As it turns out, the storms behaved the way you’d have expected them to given their environment. The last of the line is presently moving through southeast Michigan. But dewpoints are still in the low 70s, and a few popcorn cells are sprinkling the radar. Through my sliding glass door, I can see a big, mushy tower making its debut. Think I’ll grab my saxophone and camera and head out to get some practice in. With a little luck, maybe I’ll get a few lightning photos as a bonus.

Back Yard Chase with Possible Wall Cloud

I hadn’t planned to chase storms today, but Kurt Hulst made me an offer too good to turn down, and off we went. For all the hoopla, with a tornado watch covering most of Indiana and Ohio and a 10 percent tornado risk outlined in exactly the same area south of the Michigan border as last week, the storms nevertheless turned out to be pretty garden variety.

In fact, nothing materialized south of us where we expected it to. Instead, Kurt and I got pleasantly surprised when a couple of cells fired up to our west near Plainwell and almost immediately took on supercellular characteristics. A southwest-northeast-oriented outflow boundary was working its way east, and it provided convergence that fired up a slowly growing line of storms in the weakly unstable warm sector.

We locked onto a promising-looking cell in central Michigan whose top, at between 40-45,000 feet, was the highest of the day. Base level SRV showed on-again/off-again weak circulation for this storm, and reflectivity had it

hooking nicely at different times. It was no monster supercell, but it had its moments. I took photos of a nice lowering while parked just south of the intersection of R Drive and 23 Mile Road 12 miles south of Charlotte. I’d call the feature a wall cloud. While I couldn’t verify rotation, the vertical motion and the position of the lowering just south of the rain shaft under the updraft base were pretty suggestive.

What you see was as good as it got. I reported the lowering to KGRR after taking the photos, but the storm began to crap out on us even as I was talking with the meteorologist. We dropped it a few minutes later and headed south to catch a new, developing cell. We’d probably have done better to stick with what we had, as it appeared to strengthen again briefly on radar while the new one went linear right away.

Chases in Michigan more often than not prove to be just entertaining diversions–fun, but it ain’t Kansas, Toto. This one fit that description. It was good to get out with Kurt, and also good to get home without having spent too many miles chasing nothing of any consequence.