Author Topic: Derecho could hit Iowa, please not me..  (Read 2194 times)

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Offline Aardvark

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Offline richard583

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Re: Derecho could hit Iowa, please not me..
« Reply #1 on: June 11, 2013, 05:47:28 PM »


Here's a decent source online to check the main temperature spread, set against surface pressure; and which also has an element covering "wind vectors".

http://ww2010.atmos.uiuc.edu/(Gh)/wx/surface.rxml

"temp. spread" and the difference between warmer and cooler air mass, being the main focus.

"surface pressure", shown in isobars, the basic layout of which works to show both the direction that wind flow will moveparallel to and between whatever main two, and also how fastthe narrower the more quick.

"wind vectors", fairly obvious.

Alternative sources for both temperature spread, and surface pressure.

http://weather.unisys.com/surface/sfc_con.php?image=na&inv=0&t=cur

http://weather.unisys.com/surface/sfc_con.php?image=pr&inv=0&t=cur&expanddiv=hide_bar

(source: Unisys Weather)
« Last Edit: June 11, 2013, 05:52:45 PM by richard583 »

Offline chief-david

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Re: Derecho could hit Iowa, please not me..
« Reply #2 on: June 11, 2013, 05:51:13 PM »
Then add the amount of water in the soil now. 

Bad for standing trees.
Not good for crops.

I am with you, hoping for the best.
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Offline kcidwx

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Re: Derecho could hit Iowa, please not me..
« Reply #3 on: June 11, 2013, 06:50:41 PM »
I was in the one in July 2011. I was just outside Vinton, IA. I received a 112 mph wind. Good times! Okay not really.
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Offline chief-david

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Re: Derecho could hit Iowa, please not me..
« Reply #4 on: June 11, 2013, 11:15:54 PM »
sounds possible, or something like it

From I-90 in Minnesota to State Hwy 3 in Iowa
« Last Edit: June 11, 2013, 11:19:46 PM by chief-david »
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Offline Aardvark

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Re: Derecho could hit Iowa, please not me..
« Reply #5 on: June 11, 2013, 11:33:24 PM »
we are hearing the weather will be up along the Minnesota border and down into Blackhawk county.  I am on the edge maybe 40 miles to the North,   It generally depends on how much heating of the atmosphere before the temperature drops. 
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Offline Bunty

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Re: Derecho could hit Iowa, please not me..
« Reply #6 on: June 12, 2013, 09:37:58 AM »

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Offline BigOkie

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Re: Derecho could hit Iowa, please not me..
« Reply #7 on: June 12, 2013, 11:37:16 AM »


Interesting.  I'm right on the boundary there for the most frequent.  I've really never heard them called 'derechoes' here though...


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Offline Old Tele man

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Re: Derecho could hit Iowa, please not me..
« Reply #8 on: June 12, 2013, 02:24:53 PM »
Yeah, because to me "derecha" is simply spanish for "right" ("izquierda" is left) and not some weather-related phenomenon.
« Last Edit: June 12, 2013, 11:38:27 PM by Old Tele man »
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Offline Bunty

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Re: Derecho could hit Iowa, please not me..
« Reply #9 on: June 12, 2013, 07:10:40 PM »

Interesting.  I'm right on the boundary there for the most frequent.  I've really never heard them called 'derechoes' here though...

Isn't it just another term for squall line?

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Offline Old Tele man

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Re: Derecho could hit Iowa, please not me..
« Reply #10 on: June 12, 2013, 07:21:36 PM »

Interesting.  I'm right on the boundary there for the most frequent.  I've really never heard them called 'derechoes' here though...

Isn't it just another term for squall line?
That's an old nautical term that I'm familiar with, via USN, but "derecho" is apparently something recent.
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Offline WeatherHost

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Re: Derecho could hit Iowa, please not me..
« Reply #11 on: June 12, 2013, 07:36:47 PM »
Yeah, to me "derecho" is simply spanish for "right" ("izquierda" is left) and not some weather-related phenomenon.

"Derived by the Spanish word for "straight ahead," derechos are a weather phenomenon that traditionally happens only a few times a year. It is defined as a line of storms that produces a swath of damage more than 240 miles long with gusts of at least 58 mph."

http://www.cnn.com/2013/06/12/us/midwest-weather-storms/


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Offline SlowModem

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Offline chief-david

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Re: Derecho could hit Iowa, please not me..
« Reply #13 on: June 12, 2013, 07:49:02 PM »
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Offline DGwx412

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Re: Derecho could hit Iowa, please not me..
« Reply #14 on: June 12, 2013, 10:32:14 PM »
First wave passed me here in Ohio but not by much.  Lots of lightning and some thunder along with gusty winds.  Second wave is coming through Indiana and Michigan.  Should be here around 1 or2 am depending on the wind direction.  Really hope it scoots out over Lake Erie!
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Offline SlowModem

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Re: Derecho could hit Iowa, please not me..
« Reply #15 on: June 12, 2013, 11:50:48 PM »
That's a pretty mean looking line of storms in IN/OH.
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Offline Farmtalk

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Re: Derecho could hit Iowa, please not me..
« Reply #16 on: June 13, 2013, 12:20:47 AM »
Yay! (Sarcasm intended), looks like I'm going to get hit! Nothing like another 13 days without power!! Woop woop!!! (Hope sarcasm can be felt). Gonna be a long night still yet.

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Offline Aardvark

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Re: Derecho could hit Iowa, please not me..
« Reply #17 on: June 13, 2013, 01:30:41 AM »
it went around us, not complaining, but this is the edge as we started home.  the temperature before we went into the eatery was 90, 30 min later 68, this was fast moving and by the time we got one mile south of that, it had already overtook us, but lucky us, no storm... :)
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Offline DGwx412

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Re: Derecho could hit Iowa, please not me..
« Reply #18 on: June 13, 2013, 06:31:16 AM »
Long night but thankfully not as eventful as forecasted.  Was almost right on the money with my prediction of time for wave two...was woken from sleep at 1:50am when round two was approaching.  Smacked (that's an appropriate term for it for sure!) into us at 2am sharp.  Long Road Station in Avon recorded a 27mph wind gust at that time.  Fortunately the storm was traveling at about 50mph so the initial rough wave passed by 2:20am and then it was just moderate rain.

Hope others made it through ok!!!
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Offline Farmtalk

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Re: Derecho could hit Iowa, please not me..
« Reply #19 on: June 13, 2013, 07:12:03 AM »
Bearing down on me right now, fingers crossed, no warnings :grin:
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