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Question For The Experienced "Weather"  
User currently offlineNjxc500 From United States of America, joined Dec 2007, 240 posts, RR: 0
Posted (6 years 2 months 3 weeks 5 days 16 hours ago) and read 3112 times:

I have a question to pose for those who have seen it all. I'll start by stating that I was flying today at 2500' with clouds about 1000 or 1500 above me. I was moving along fine, and I see something just to the left of my path, and it is difficult to describe, and the pictures didn't turn out....It was a cloud to ground area of something. I can best describe it as looking like a small localized rain shower, except it was brown.... It was over a farm field that appeared it might be dusty. This was also occuring in a "less populated" area. I have about 300 hours flying now in Minnesota, and this one caught my eye quick. I deviated and stayed about 15 miles from this spot. This was definitely something I hadn't seen before.

What could cause this?

Small twister, updraft, or some small local phenomenon.

I would love to hear your thoughts.

Nick

9 replies: All unread, jump to last
 
User currently offlineJpax From United States of America, joined Aug 2006, 1018 posts, RR: 0
Reply 1, posted (6 years 2 months 3 weeks 5 days 16 hours ago) and read 3100 times:

It was most likely a phenomena known as "chocolate rain."

You can learn more about it by watching this video:




 Wink


User currently offlineLexy From United States of America, joined Jun 2006, 2515 posts, RR: 8
Reply 2, posted (6 years 2 months 3 weeks 5 days 16 hours ago) and read 3096 times:

That's the single most disturbing video I have ever seen in my entire life.


Most likely a updraft or downdraft of some sort. Was this in the vicintiy of a thunderstorm? If so, then either of the two possible scenarios is likely.

Edited for spelling.

BTW, I took a look at Tay Zonday's website and he is quite talented with his voice without a doubt. That song above just caught me way offguard. LOL!!!

[Edited 2008-05-26 20:14:34]

[Edited 2008-05-26 20:23:50]


Nashville, Tennessee KBNA
User currently offlineNjxc500 From United States of America, joined Dec 2007, 240 posts, RR: 0
Reply 3, posted (6 years 2 months 3 weeks 5 days 16 hours ago) and read 3070 times:

This was one day after the tornadoes they are talking about, the day was fairly stable, and the cold front had already moved in. I could see an updraft causing this but I doubt downdraft, because it was very fixed in shape, like a rainstorm has edges...

Nick


User currently offlineLexy From United States of America, joined Jun 2006, 2515 posts, RR: 8
Reply 4, posted (6 years 2 months 3 weeks 5 days 16 hours ago) and read 3067 times:

Very fixed in shape? WOW! You've got me on that one my friend. Let me research a bit and i'll see what I can come up with for ya.


Nashville, Tennessee KBNA
User currently offlineBond007 From United States of America, joined Mar 2005, 5408 posts, RR: 8
Reply 5, posted (6 years 2 months 3 weeks 5 days 15 hours ago) and read 3040 times:



Quoting Lexy (Reply 2):
That's the single most disturbing video I have ever seen in my entire life.

Wow, you REALLY need to get out more!

Jimbo



I'd rather be on the ground wishing I was in the air, than in the air wishing I was on the ground!
User currently offlineKFLLCFII From United States of America, joined Sep 2004, 3301 posts, RR: 30
Reply 6, posted (6 years 2 months 3 weeks 5 days 3 hours ago) and read 2925 times:

A shadow?


"About the only way to look at it, just a pity you are not POTUS KFLLCFII, seems as if we would all be better off."
User currently offlineNjxc500 From United States of America, joined Dec 2007, 240 posts, RR: 0
Reply 7, posted (6 years 2 months 3 weeks 5 days 2 hours ago) and read 2892 times:

No, this wasn't a shadow, I have seen plenty of those. This was different, and really caught my eye. I am now told that that my rear passenger has a picture, I'm not sure of the quality, but I will post it ASAP.

Nick


User currently offlineRampart From United States of America, joined Aug 2005, 3125 posts, RR: 6
Reply 8, posted (6 years 2 months 3 weeks 5 days 1 hour ago) and read 2845 times:

I teach intro meteorology (not my main thing, but I know some), and I'm a Skywarn member, so I'll take a shot, witthout seeing a picture and going from your description.

1) It could be a garden variety dust devil, some can get quite large. Here's a good picture: http://www.britannica.com/eb/art/print?id=19655&articleTypeId=0 , or try http://www.nasa.gov/vision/universe/solarsystem/2005_dust_devil.html

2) It could have been a weak tornado, but you indicate that the weather was relatively stable, and didn't mention that it was associated with a mesocyclone thunderstorm.

3) It could have been a "cold air funnel" or "landspout" that might have picked up some dust. These are more akin to waterspouts, weak compared to a tornado and not needing a supercell thunderstorm, but still a bonafide vortex. Here are a couple pictures: http://commons.wikimedia.org/wiki/Image:GID_Landspout.jpg , or http://www.srh.noaa.gov/lub/images/events/2007/20070927/tor_4.jpg

Love to see your picture if you get one. If you can't get it up here on the thread, IM me.

edit: let me also add downdraft or "gustnado", even though you don't think downdrafts are involved. Downdrafts can pick up dust and if wrapped into a small vortex can appear "defined". Here's another picture: http://www.crh.noaa.gov/mkx/document/wind/images/100402/gustnado1.gif They are caused by downdrafts.

-Rampart

[Edited 2008-05-27 11:06:08]

[Edited 2008-05-27 11:06:42]

User currently offlineMeteorologist From United States of America, joined Nov 2004, 137 posts, RR: 0
Reply 9, posted (6 years 2 months 3 weeks 5 days 1 hour ago) and read 2815 times:

As a meteorologist, I'd be curious to see what pictures you have because I'm not entirely certain what you might be talking about, however my guesses would be dust devil or land spout as Rampart said. Dust devils are very common out west here in drier areas where low level stability can be very low due to a super adiabatic layer near the surface about some dark colored farm lands but the deeper layer wouldn't support any such development.

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