Talk:Derecho

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[edit] Derecho Criteria

There are slightly tighter constraints regarding actual "derecho" classification. They have to last at least 400km with 3 reports of winds 33 m/s or greater. Also no more than 3 hours can elapse between any two reports of >25 m/s winds. I know NWA/AMS journals and U.S. NWS guidelines follow that but I can't find a web citation. It's a pretty important point because for all intents and purposes what is and isn't a "derecho" is much more of an academic point than one of meteorological significance. I figured I would bring it up and let the wiki-experts handle it. (Bigme100 13:11, 7 June 2007 (UTC))


[edit] What about Detroit and Windsor?

Hum! These cities were hit three times, July 7 1991, July 13 1995 & May 31, 1998 very hard (and actually the second labor day derecho in 98 started in that area too, so it could very well be four). So I guess Detroit has detrone St-Louis and Grand Rapids. Also the Ottawa-Gatineau region(although not all) were hit also three times July 15, 1995 (south end), July 5, 1999 (Quebec-side) and July 17, 2006 (again Quebec, but also northwest and north east portion of the city) and the city of Gatineau.

So, we will probably have to modify some sections. I've put the tag on that section as a result--JForget 01:44, 2 September 2006 (UTC)

[edit] Geographic scope limited

This is virtually just about US and Canada (with one small mention about Germany, maybe if someone can find something for other continents, that would make this article better.--JForget 05:22, 4 March 2007 (UTC)

The reference I added indicates that the term is used almost exclusively for storms in North America. Even if the phenomenon does occur elsewhere, it's called something different and so isn't really under the perogative of this article. A short "Other derecho-like weather" section may be all that's warranted. Bryan Derksen 07:06, 23 June 2007 (UTC)
Any responses? As far as I can tell from my interpretation of the reference I found, the globalization template is inappropriate and I'm probably going to take it off again soon. Bryan Derksen 06:14, 1 July 2007 (UTC)
It would be hard to believe similar systems don't form over Europe, Asia, or Australia. I think this is why someone stuck the tag on it. I got stuck with a similar tag regarding dry line some months back. Thegreatdr 11:59, 1 July 2007 (UTC)
As the source states, while similar systems form elsewhere in the world, it seems that the term "derecho" is only used for them in North America, with no specific term for them elsewhere--except maybe "windstorm," which is what I (just barely) remember the "More Trees Down" Derecho being called when it happened. (I was three-and-a-half years old when it happened, and I have a distant memory of my parents getting me out of bed and moving me to an air mattress under my dad's model railroad in the basement in case it did structural damage to the house.) Rdfox 76 14:21, 1 July 2007 (UTC)
We had a derecho here in Wichita Falls last week. The local paper carried a couple of stories about the term and the kind of storm for which it is used. It seems that not only are derechos themselves rare, but term is rare as well. If it is a technical or field-specific term in meteorology, then there should be corresponding terms for the same kind of storm used by meteorologists in other languages. I don't see why this article cannot cover this issue plainly. -Acjelen 00:27, 2 July 2007 (UTC)

[edit] Increaceing numbers

I here that this beautiful type of storm is on the rise! is that true? If so there will be more editing on this!--Takaomi I. Shimoi 16:35, 23 March 2007 (UTC)

No, they're still rather rare. (Bigme100 13:11, 7 June 2007 (UTC))

[edit] History of the term and actual use?

Is this along the lines of "El Nino", some hokey spanishesque weather term that went from unknown to a news buzzword? Sure, the NOAA has a "history" page saying the term goes back to 1888, but how widespread is the actual use? Ever been in print? Any news reporter use it more than 10 years ago? All the references seem to be circular and point back to the same NOAA page... Gront (talk) 10:55, 24 February 2008 (UTC)

Hmmm... Most of the "Derecho" events on the NOAA page only exist there, on wikipedia, and people using wikipedia as a reference. Shenanigans? Gront (talk) 10:58, 24 February 2008 (UTC)