So Much for Thursday in Illinois

I was hoping, really hoping, that this Thursday would shape up as my first chase day of the year out in Illinois. The NAM sure looked promising for a second, but now, like Dante’s inferno, it has “Abandon all hope, ye who enter here” written over the door.

The GFS was never very positive to begin with, but at this time of year, Great Lakes chasers are optimistic out of sheer desperation, and I guess I wasn’t the only one who was rooting for the NAM with its bullish CAPE of up to 1,500 j/kg and sweet lapse rates.

But it’s gone, all gone. Yesterdays NAM runs weakened the CAPE and shuttled it south and east. A nice cold core setup in southeast Iowa/northwest Illinois materialized long enough to whisper sweet nothings, but nothings are probably all they were. The 500 mb low has since slunk apologetically back west toward Kansas City, with its -25 C temperature minimum well displaced from the surface moisture lobe. The setup could still change, but unless it bumps back east and stacks back up, I’m not going to drive that far to find out.

I will, however, very likely head toward the Michigan border around New Buffalo. Moisture looks to be ample with mid- to upper-50s dewpoints augmented by evaporation, backed surface winds, and precip breaking out by 21Z if this present NAM verifies. If it does, there could be a bit of lightning and thunder, and at least the slim possibility of a brief spin-up; if not, it’ll have been a pleasant break-in drive for chase season 2010.

March 10, 2010 by
Filed Under: Nature, Storm Chasing, Tornadoes, Weather Tagged With: , , , , ,

Shifting Meters: Energize Your Solos with Implied Polyrhythms

Okay, sax players and jazz soloists, I haven’t forgotten you! I’ve been quite focused on the weather recently, but I’ve also been practicing my horn pretty industriously, and, in the words of the old pop classic, you were always on my mind.

It’s high time I wrote a musical post. This one ought to give you a little something to thrash with. The bit in the headline about “implied polyrhythms” sounds impressive, but I’m not sure it’s entirely accurate. I just don’t know what other term to use–I don’t think “hemiola” is quite right. So we’ll go with “polyrhythm” for the sake of having some kind of handle of nomenclature with which to pick up our suitcase of application.

The concept itself is simple: by taking a pattern that normally lays well in triplets and recasting it in eighth notes, or vice-versa, you automatically rearrange the way that certain notes are accented. The result is usually some pretty cool syncopation that will grab your listeners by the lapels, throttle them into submission, and make them hand over their wallets. Well, okay, nothing that dramatic, but it should certainly get their attention.

Since your eyes and ears will explain to

shifting_meters
you what I mean better than my words can, to your right you’ll find a couple of examples. Click on the image to enlarge it, then print it out and take it with you to the woodshed.

The first line of example A features triplet arpeggios on the augmented scale. The following line uses exactly the same note order, but converts it to eighth notes.

Example B shows you how the concept works in reverse, taking a simple sequence of fourths in duple meter and converting it to triple meter.

The result is hipness, pure and unmitigated.

Experiment with this concept. And don’t limit yourself to just triplets and eighth notes. You can reframe any odd grouping of notes into eighth notes or sixteenth notes, and the converse also applies. The practice of translating one meter into another is no mystery, and if you’ve been playing the sax for some time, you’re probably already an old hand at doing so. It’s a nice way to spice up your improvised solos with rhythmic energy.

That’s all for tonight. There’s a bottle of Double Crooked Tree Imperial IPA sitting in the fridge, and its siren song is too powerful for me to ignore any longer. For more articles on jazz improv, including exercises and transcribed solos, visit my jazz page.

March 9, 2010 by
Filed Under: Jazz, Jazz Improvisation and Technique, Saxophone Tagged With: , , , , , , , , , , , ,

Faux Supercell: A Weird Radar Image

Three days ago, glancing idly at the national radar composite, I saw a bright patch of red in northwest Nebraska. I decided to take a closer look at it with

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GR3 and did a double-take. What the heck was it? Base level reflectivity showed what looked like a pronounced hook, but there was no indication of rotation on SRM and the cloud tops were only 10,000-15,000 feet. The storm was moving northwest toward the low, the way I’ve seen some low-top supercells do. I opened GR2AE in order to get better resolution, but it showed nothing particularly illuminating.

I knew this thing couldn’t be a supercell, but still… If I’d taken just a few seconds to pay attention to the surface obs, I wouldn’t have had even a shadow of doubt, but that’s not my style. I was just plain intrigued by this faux supercell, so I grabbed the images and tossed them onto a thread

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on Stormtrack, thinking that others might also find them interesting. After all, the storm looked about as supercellular as anything I’ve seen that wasn’t actually a supercell–a camouflage act of sorts, kind of like certain harmless snakes whose color schemes mimic those of poisonous snakes.

Jason Boggs wrote back to say he thought it was just a sleet storm. Then in pipes Rob Dale pointing out that surface obs showed temps in the low thirties and snow, with no lightning within 150 miles. Smarty pants. How did he know there wasn’t a mile-wide snow wedge underneath that thing? There could have been. Well, there COULD have!

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Okay, there couldn’t have, but it’s fun to think about.

Getting back to the point: I thought these were some cool images, noteworthy because of their mimicry. I figured that you might enjoy them too. Click on them to enlarge them.

March 8, 2010 by
Filed Under: Storm Chasing, Weather Tagged With: , , , ,

El Nino and a Delayed 2010 Storm Season

Back in December I wrote a post speculating how El Nino might affect the moisture fetch from the Gulf of Mexico. I wrote as a non-expert, which is always my position regarding weather related stuff, but it appears that my concern about the influence of cooler sea surface temperatures on return flow actually held water.

Tornado season normally begins ramping up in Dixie Alley in February, solidifies in March, peaks in April, then begins to decline in May as the action moves west and north toward traditional Tornado Alley.

Last year the tornado total for February, 2009, was 43. It consisted of six tornado days, two of which were outbreaks of 12 and 21 tornadoes.

This year, the tally for February was a statistically unprecedented zero. That’s no, nada, zippo tornadoes at all last month. Instead, the South experienced record-breaking cold weather, with snow in virtually all of the southern states and a series of brutal winter storms lashing Oklahoma, Texas, and parts of Dixie Alley.

Now we’re into March, and the snow seems to finally be behind us. As I sit here writing, I can look out the sliding doors of my apartment at a beautiful day with temperatures climbing into the mid forties. I’ll take that with a smile, along with the warming trend that’s in store for this coming week here in West Michigan. But at the same time, sampling buoys across the Gulf of Mexico, I see water temperatures in the low to mid fifties and some really horrible dewpoints. It looks a lot like what the ENSO sea surface temperature table has predicted, namely, cooler-than-average temperatures.

We’re presently looking at  systems moving through the Plains that might be tornado breeders if they weren’t starved for moisture. It’s hard to get excited about dewpoints that barely scrape into the low to mid fifties pretty much everywhere except waaay down in southern Texas and Louisiana.

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Okay, it’s only March. What’s a bit scary is to think that the Gulf may not be up to snuff till as late as May. Click on this image of the Climate Prediction Center”s ENSO sea surface temperature anomaly forecast, updated March 1, and you’ll see what I’m talking about. The first two tables are the ones you want to pay attention to. That blue in the Gulf of Mexico doesn’t look too promising.

I hope I’m wrong, and it could be that I am. A quick glance at water temperatures west of the Florida peninsula shows some temps into the seventies well out into the Gulf, so maybe things will pick up more quickly than the map suggests. The ENSO update does indicate that El Nino is weakening:

•A majority of the models indicate that the Niño-3.4 temperature departures will gradually decrease at least into the summer.

•The models are split with the majority indicating ENSO-neutral conditions by May-July 2010 and persisting into the Fall. Several models also suggest the potential of continued El Niño conditions or the development of La Niña conditions during the Fall.

–Page 27, March 1, 2010, CPC-NCEP ENSO Update

That’s a good sign, kind of. The last part leaves us hanging, but as always, time will tell.

More immediately, I wonder, as I did three months ago, whether we won’t see a delayed storm season. I think, I hope, that when it does finally arrive, it will be a stellar one.  There’s reason to be hopeful, considering the ample ground moisture available for evapotranspiration throughout Tornado Alley, including areas that languished last year under a severe drought. No such problem this year. I hear some chasers talking about West Texas, and I’ll bet they’re right. Once the Gulf finally does set up shop, whether sooner or later, I expect to be making some trips out west. See y’all at the edge of the meso.

March 7, 2010 by
Filed Under: Life, Nature, Storm Chasing, Tornadoes, Weather Tagged With: , , , , , ,

We Will Miss You, Eric Flescher

No man is an island entire of itself; every man is a piece of the continent, a part of the main.

If a clod be washed away by the sea, Europe is the less, as well as if a promontory were, as well as any manner of thy friends or of thine own were. Any man’s death diminishes me, because I am involved in mankind.

And therefore never send to know for whom the bell tolls; it tolls for thee.

–John Donne

Yesterday, March 2, 2010, the bell tolled for Dr. Eric Flescher, and in tolling for him, it tolled for us all. We in the storm chasing community are diminished by the loss of a good, decent man whose passion for life was matched with a gentle, friendly spirit.

I never met Eric in person, but, like many on Stormtrack, I swapped plenty of messages with him, enough that I considered him a long-distance friend whom I looked forward to meeting. Last year he had let me know that his door was open if I needed a place to overnight while out chasing, and I was struck by his generosity and hospitality.

I never made it out to Kansas City in 2009, but I had hoped to finally connect with Eric face to face this spring. I regret that now I will not get the opportunity to sit down with him and talk about storm chasing, and about carnivorous plants, another passion of Eric’s that he and I shared. He was so proud of that Nepenthes ampullaria! And he was able to successfully grow a cobra lily–no small accomplishment.

To say that Eric was a storm chaser captures just one facet of him. He was a Renaissance man with a broad variety of interests ranging from severe weather, to astronomy, to carnivorous plants, to cooking, and more. Those who knew him better than I can no doubt add plenty of other items to the list. But in the storm chasing community, he was known foremost as a fellow chaser, and judging from the responses to ongoing news of his condition since early last December, and now of his death, he clearly was a very well-liked and respected chaser whom many counted as their friend.

In my five years on Stormtrack, I never once saw Eric enter into the sniping and flame wars that have lit up the forums, or demean another member, or utter a bad word about anyone. Not ever. And I never saw a bad word written about Eric. Those who wrote to him or of him expressed only appreciation and respect. In a community of diverse, colorful, and opinionated personalities, to be able to say such things about Eric is a tribute to his character and his stature.

Today I am saddened by Eric’s death. His wife, Sue Ellen, will deeply miss her beloved husband; many of us will miss our friend; and all of us will miss a gentle, decent, passionate man whose presence made both the chaser community and the world in general a better place.

March 3, 2010 by
Filed Under: Life, Storm Chasing Tagged With: , , ,

First Crack at Severe Weather (Has the GFS Ever Lied?)

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Here on the last day of February–just one day before meteorological spring begins–temperatures are finally settling into a warming trend here in Michigan. With plenty of snow still on the ground but the promise of better days in sight, and with me feeling my repressed itch for severe weather beginning to surface too insistently not to scratch, I’ve cast a wistful eye on the long-range GFS.

At 180 hours out from today’s 6Z run–in other words, on March 7, early afternoon–things look interesting. Not inspiring, just something to keep an eye on. If you’re a

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fellow storm chaser, you know the drill, and you know how the models change. With that caveat, while I haven’t been an avid follower of the GFS these days, I seem to recall that it was painting a somewhat similar scenario last week.

Anyway, here are the surface maps for sea level pressure and surface dewpoints at 18Z, March 7. Click on the images to enlarge them. Obviously the moisture could stand improvement, and I wonder whether sea surface temperatures in the Gulf will be warm enough to deliver, but let’s see what happens from here.

February 28, 2010 by
Filed Under: Life, Michigan, Storm Chasing, Weather Tagged With: , , , , , , ,

Wavespray on Lake Michigan

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If March coming in is anywhere nearly as leonine as February going out, it will be a March lion indeed. Today the wind was blowing hard out at Holland Beach, churning Lake Michigan into a grand spectacle of roiling billows, crashing surf, and smoke-like spume torn from the wave tops and carried along on the gale.

It was a marvelous sight. Lisa preceded me out onto the pier, and when I caught up with her, she was standing there, laughing as the waves burst

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against the ice shelf and threw blasts of icy water toward her. That’s my kind of gal! Someone who takes joy in the wild side of nature.

Unfortunately, the water got all over my camera and onto my lens, so the latter part of my photos are somewhat distorted by water droplets. But I don’t mind terribly, because the effect is actually rather moody. I guess if I was going to have something go wrong with my photos, I would pick that.

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Speaking of photos, the four here were all taken from the beach and out on the pier. Click on them to enlarge them.

In taking them, I got more soaked than I realized; and the wind chill being what it was with the northwest wind blasting in off the big lake, I rapidly got much colder than I ever expected. But it was worth it to get some shots of Lake Michigan’s raw, unfettered side.

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I haven’t edited these images. I’m slapping them up here just as they are–maybe not works of art, but a taste of the kind of effect the shoreline is capable of delivering when the gales blow hard across the big waters.

February 27, 2010 by
Filed Under: Life, Michigan, Outdoors, Photography, Weather Tagged With: , , , , , ,

How to Use the Flat Sixth of the Major Bebop Scale

It was when I picked up some David Baker books on bebop scales back in my junior year in college that I finally began to make some sense out of how jazz worked. Nobody had told me that one of the secrets of those bop musicians was to smooth out the seven-note scales and modes by interpolating an extra note–typically a raised seventh in Mixolydian modes and a raised fifth, or flatted sixth, in the tonic major scale. Once I latched onto that concept and began to flesh it out with various licks from Baker’s great publications, things slowly began to gel for me.

g-major-bebop-scaleThe thumbnail your right shows a G major bebop scale, with the D#/Eb serving as the raised fifth/flatted sixth. Click on the image to enlarge it.

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NOTE: All examples on this page are in the key of G major. Because note function changes relative to chord function, all references to the flat sixth in the following discussion are understood to mean the flat sixth of the major bebop scale.

The flat sixth most likely came into use as a passing tone designed to create an eight-note scale which could smoothly take a player from tonic to octave. But the note has applications that make it useful as more than just a linear connecting device, and I suspect that its insertion into the major scale also involved harmonic considerations. Chordally, the flat sixth of the major bebop scale helps define structures that a jazz improviser regularly encounters.

g-major-triad-with-b6The most apparent harmonic use of the flat sixth, as the flat sixth (or flat thirteenth) of a tonic major chord, is not as common as other applications. But it is nevertheless an interesting and colorful tone which imparts an augmented sound to the tonic chord–a suspended sound that wants to resolve downward to the fifth. The second example on this page outlines a GMb6 chord, ending in a lick that emphasizes the b6.

iv-chord-major-and-minorThe flat sixth crops up much more often as a minor third of the IV chord. It’s common to encounter a change of modality from major to minor in the IV chord, and the flat sixth is the tone that establishes this shift. The third example shows both CM7 and CmMaj7 chords. It’s common, in the shift from major to minor, to also lower the seventh, as shown in the bebop lick that’s included in the example.

v7b9Another extremely common use of the flat sixth is as the flat nine of a V7b9 chord. This next example outlines a D7b9 chord. Because the V7b9 is so ubiquitous in jazz, the flat sixth, far from serving as merely a passing tone, can often become a target tone. Also, as indicated at the end of the example, it can serve as a chromatic bracketing device.

v7b9-bebop-scale-lickThe final example shows how the b6 fits into a V7b9 lick.

The harmonic applications of the flat sixth that I’ve just described are just three of its uses. It also functions as the b5 of a IIm7b5 chord; as the major third of the V7 of VI chord (ex. B7 in the key of G); and in other borrowed-chord applications that easily relate to the tonic key.

I’ll leave it to you to figure out the rest. This article should give you a good start. If you enjoyed it, be sure to check out other articles of interest to saxophonists and jazz improvisers on my jazz page.

February 24, 2010 by
Filed Under: Jazz, Jazz Improvisation and Technique, Music, Saxophone Tagged With: , , , , , , , , , , , ,

The Smart Shopper’s Guide to Swan Meat

It’s gratifying to know, in these troubled times when so many are struggling financially, that you can purchase swan meat for just $50.00 a pound. That’s right, there are deals to be had and ways to satisfy the well-known American craving for swan at bargain-basement prices. The kicker is, you’ve got to purchase the entire bird. But at rates this low, why would you not?

Presumably, when you order a bird from 1-800-STEAKS.COM, you’re getting a black swan as shown in the web page photo.* The page doesn’t actually specify that it’s a black swan, nor does it tell you how much meat you’re getting for your money, because, heck, why not make things more fun by making the customer guess, right?  At the time of this writing, I defy you to search the page content and find any details beyond the fact that you’re getting swan for $999.00–a steal at $500 off the regular price of $1,499.00.

Since it really is kind of important to know where in the size spectrum between a chicken and a sperm whale the swan in question lies, it’s off to Wikipedia we go, you and I, where we learn that a mature black swan weighs anywhere between eight and twenty pounds. Very good, now we’re getting somewhere. But in what form will our swan be delivered to us? After all, it’s swan MEAT that we’re after, and that is what the site advertises. So should we expect it to come pre-packaged, or frozen whole with the feathers still on it, or what?

Finding no immediate information, off we go again to do more research, this time to the Exotic Meat Market, which offers competitive prices on black, mute, and black neck swans and is pleased to answer some of our pressing questions.*

Ah! The swans are live. We will not be receiving our eight to twenty pounds of swan meat in nicely prepared parcels. No, our swan meat will be arriving in the freshest of all possible conditions, honking and hissing and flapping its wings and ready to vigorously assert its personal views on being converted into table fare. So we shall have our work cut out for us, but the Exotic Meat Market sweetens the deal with prices that make us want to shout for joy, they are so ridiculously low.

Here, for instance, is the pricing information for a single live, male black swan:

Regular price: $1,299.00
Sale price: $599.00

Black Swan – Live Male blswlima

[Add to cart]

I’m not sure what “blswlima” means. Maybe the swan comes with Lima beans. Regardless, you can see right away that here is a platinum deal if ever there was one, with the Exotic Meat Market undercutting 1-800-STEAKS.COM by $200 on their regular price and $400 on the sale price. I know, I know–it makes you want to rub your eyes in disbelief. Disbelief is a common reaction to prices like these. Nevertheless, it’s true: you can purchase live, aggressively fresh swan meat–between eight and twenty pounds, we’re still not entirely clear on that–for a low, low, not quite 600 bucks.

And that’s not all. Mute swan, a non-native species which is rapidly becoming a weed bird in United States lakes and rivers, also sells for just $599.99. And black neck swan, regularly $2,499.99, is currently on sale for a paltry $1,999.99. That’s a $500 SAVINGS! (Though it should be mentioned that the black neck swan doesn’t come with Lima beans.)

But perhaps you’re the outdoorsy type who prefers to head out to the swan blind and harvest your own. If that’s the case, you’ll appreciate this recipe for mute swan burgers. I realize that you’ve probably already got your own half-a-dozen-or-so favorite ways of preparing America’s favorite poultry, but in a country where the mere mention of swan sets mouths to watering, one more recipe can’t hurt.

Let me know how you like it. As for me, I think tonight I’ll settle for fried chicken.

ADDENDUM, March, 2013: Over three years have passed since I wrote this article, but it continues to draw traffic. I’ve spent hours writing serious, marvelously practical posts that have long since settled into the sedimentary layers of blogdom, while an aberration I knocked off in an hour or so has attained modest immortality. Weird. Must be a lot of folks are just crazy about swan. That or else they enjoy a chuckle or two. Probably the latter. So if you enjoyed this post, you might also want to check out my assessment of the Giraffe Test. It’ll set your mind at ease, particularly if you’re a business professional.

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* The link I had to this site no longer works and has been removed.

February 22, 2010 by
Filed Under: Humor, Life, Outdoors Tagged With: , , , , , , , , ,

Getting Ready for the Skunk Cabbage

Here’s some news that will put joy in your heart: skunk cabbage days are almost here! (And all the people shouted, “Hurrah!” and donned their festive garments.)

It’s true. Sometime within the next three weeks or so, the odd, purple cowls of Symplocarpus foetidus will start pushing up through the mud and matted leaves of the wetlands where they grow, generating enough heat to melt their way through the ice and snow and provide a microclimate for early insects. Here in the Great Lakes, the skunk cabbage is the year’s first wildflower, and I always get happy when I see it begin to show. It’s a charming little plant, though there’s nothing particularly pretty about it. This plant doesn’t care about “pretty.” It’s all about character and nail-toughness. Skunk cabbage has the grit of a pioneer.

It also has the smell of a pioneer, as you’ll find out if you ever hold a piece of the broken flower or leaf up to your nose and get a whiff. It smells a lot like an armpit that hasn’t been washed in a month. Taken all around, this is not the kind of wildflower you’d feel inclined to gather a bunch of and take home to stick in a vase. But, appearing with the robins and redwing blackbirds, it is nevertheless a welcome harbinger of the warmer months. I’m surprised that some Michigan town hasn’t claimed it and instituted an annual skunk cabbage festival. Not too surprised, though.

Speaking of warmer months, they don’t seem to be in any hurry to put in an appearance, and I’m starting to wonder whether Punxatawney Phil might not have been conservative in his forecast of another six weeks of winter. Another major winter storm is poised to dump another 6-10″ of snow on West Michigan this evening through tomorrow, and more snow is in the forecast for the next ten days.

Snow, snow, and yet again snow. If you like the stuff, just stick around. Sooner or later, Michigan always delivers.

February 21, 2010 by
Filed Under: Life, Michigan, Nature, Outdoors, Weather Tagged With: , , , , , ,
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