Greetings,
When does the tornado season in the States usually begin?
curious
-het



--
"I'm not an atheist. I couldn't not believe in an imaginary being.
That is just too twisted." -A. Whitney Brown

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H.E. Taylor http://www.autobahn.mb.ca/~het/

H. E. Taylor wrote:

When does the tornado season in the States usually begin?

I don't believe there is one per se -but a recent report said the
season has started early.

Whilst we are on the subject, anyone care to explain the legend on this
site:
http://www.spc.noaa.gov/products/wwa/ ?

And whilst I am draining the burden of all crania, may I ask if there
is any corresponence with extreme cold weather anywhere on an arc of 90
degrees of their occurence while there are extremely high temperatures
some 15 degrees down the road? (Wouldn't that be an handy tool if it
were so?)

Nah!

Not possible.

"H. E. Taylor" wrote in message
...
Greetings,
When does the tornado season in the States usually begin?
curious
-het


From http://www.spc.noaa.gov/faq/tornado/#Climatology...

"What is tornado season? Tornado season usually means the peak period for
historical tornado reports in an area, when averaged over the history of
reports. There is a general northward shift in "tornado season" in the U.S.
from late winter through mid summer. The peak period for tornadoes in the
southern plains, for example, is during May into early June. On the Gulf
coast, it is earlier during the spring; in the northern plains and upper
Midwest, it is June or July. Remember: tornadoes can happen any time of year
if the conditions are right! If you want to know the tornado peak periods
for your area, Harold Brooks of NSSL has prepared numerous tornado
probability graphics, which include distribution during the year."

http://www.nssl.noaa.gov/hazard/hazardmap.html

http://www.nssl.noaa.gov/cgi-bin/hazgraph3.pl
--
TQ

In article . com,
says...

H. E. Taylor wrote:

When does the tornado season in the States usually begin?

I don't believe there is one per se -but a recent report said the
season has started early.

January was a little active, February was slow, and we had a big weekend
last weekend.


Whilst we are on the subject, anyone care to explain the legend on this
site:
http://www.spc.noaa.gov/products/wwa/ ?

Which part of the legend?


And whilst I am draining the burden of all crania, may I ask if there
is any corresponence with extreme cold weather anywhere on an arc of 90
degrees of their occurence while there are extremely high temperatures
some 15 degrees down the road? (Wouldn't that be an handy tool if it
were so?)


I can't understand what you're saying here.

Harold

--
Harold Brooks
Head, Mesoscale Applications Group
NOAA/National Severe Storms Laboratory

In article , "TQ" ToweringQs AT
adelphia.net says...
"H. E. Taylor" wrote in message
...
Greetings,
When does the tornado season in the States usually begin?
curious
-het


From http://www.spc.noaa.gov/faq/tornado/#Climatology...

"What is tornado season? Tornado season usually means the peak period for
historical tornado reports in an area, when averaged over the history of
reports. There is a general northward shift in "tornado season" in the U.S.
from late winter through mid summer. The peak period for tornadoes in the
southern plains, for example, is during May into early June. On the Gulf
coast, it is earlier during the spring; in the northern plains and upper
Midwest, it is June or July. Remember: tornadoes can happen any time of year
if the conditions are right! If you want to know the tornado peak periods
for your area, Harold Brooks of NSSL has prepared numerous tornado
probability graphics, which include distribution during the year."

http://www.nssl.noaa.gov/hazard/hazardmap.html

http://www.nssl.noaa.gov/cgi-bin/hazgraph3.pl


The fundamental problem is in defining "start" of the season at any
location. Defining the midpoint is easy, but start is a more nebulous
concept. There aren't any artificial dates, such as the 1 June for the
hurricane season, and the areas of threat move around during the year.

Harold
--
Harold Brooks
Head, Mesoscale Applications Group
NOAA/National Severe Storms Laboratory

Harold Brooks wrote:
In article . com,
says...

Whilst we are on the subject, anyone care to explain the legend on this site:
http://www.spc.noaa.gov/products/wwa/ ?

Which part of the legend?

I was wondering why the blocks were set out the way they were. Over on
the western side the blue paterns were large boxes but the ones for the
wind in the middle are divided into small squares.

is there any corresponence with extreme cold weather anywhere on an arc of 90
degrees of their occurence while there are extremely high temperatures
some 15 degrees down the road? (Wouldn't that be an handy tool if it
were so?)

I can't understand what you're saying here.

You probably won't be familiar with this but there is a marked
relationship with the epicentre of largish earthquakes and the storms
that appear in their shadow zones.

Recently I noticed that every hurricane in the North Atlantic last
season occurred with periods of dull, calm overcast, or even thick fog
on occasion, in western Europe.

I was wondering if the record cold weather in Germany during the severe
cell storm or whatever it's called, that held the tornados was also a
commonality.

In article . com,
says...

Harold Brooks wrote:
In article . com,
says...

Whilst we are on the subject, anyone care to explain the legend on this site:
http://www.spc.noaa.gov/products/wwa/ ?

Which part of the legend?

I was wondering why the blocks were set out the way they were. Over on
the western side the blue paterns were large boxes but the ones for the
wind in the middle are divided into small squares.

The warnings are for counties. Counties tend to be larger in the
western US.

is there any corresponence with extreme cold weather anywhere on an arc of 90
degrees of their occurence while there are extremely high temperatures
some 15 degrees down the road? (Wouldn't that be an handy tool if it
were so?)

I can't understand what you're saying here.

You probably won't be familiar with this but there is a marked
relationship with the epicentre of largish earthquakes and the storms
that appear in their shadow zones.

No, there isn't.


Recently I noticed that every hurricane in the North Atlantic last
season occurred with periods of dull, calm overcast, or even thick fog
on occasion, in western Europe.

I was wondering if the record cold weather in Germany during the severe
cell storm or whatever it's called, that held the tornados was also a
commonality.

No.

Harold

--
Harold Brooks
hebrooks87 hotmail.com

Harold Brooks wrote:
In article . com,
says...

I was wondering why the blocks were set out the way they were. Over on
the western side the blue paterns were large boxes but the ones for the
wind in the middle are divided into small squares.

The warnings are for counties. Counties tend to be larger in the
western US.

Thanks for that.

is there any corresponence with extreme cold weather anywhere on an arc of 90
degrees of their occurence while there are extremely high temperatures
some 15 degrees down the road? (Wouldn't that be an handy tool if it
were so?)

I can't understand what you're saying here.

You probably won't be familiar with this but there is a marked
relationship with the epicentre of largish earthquakes and the storms
that appear in their shadow zones.

No, there isn't.


Recently I noticed that every hurricane in the North Atlantic last
season occurred with periods of dull, calm overcast, or even thick fog
on occasion, in western Europe.

I was wondering if the record cold weather in Germany during the severe
cell storm or whatever it's called, that held the tornados was also a
commonality.

No.

Thanks for that, too.

Would you mind supplying a link to the research if there is one online?
It would help me to put that one to bed at least.

In article .com,
says...

Harold Brooks wrote:
In article . com,
says...

I was wondering why the blocks were set out the way they were. Over on
the western side the blue paterns were large boxes but the ones for the
wind in the middle are divided into small squares.

The warnings are for counties. Counties tend to be larger in the
western US.

Thanks for that.

is there any corresponence with extreme cold weather anywhere on an arc of 90
degrees of their occurence while there are extremely high temperatures
some 15 degrees down the road? (Wouldn't that be an handy tool if it
were so?)

I can't understand what you're saying here.

You probably won't be familiar with this but there is a marked
relationship with the epicentre of largish earthquakes and the storms
that appear in their shadow zones.

No, there isn't.


Recently I noticed that every hurricane in the North Atlantic last
season occurred with periods of dull, calm overcast, or even thick fog
on occasion, in western Europe.

I was wondering if the record cold weather in Germany during the severe
cell storm or whatever it's called, that held the tornados was also a
commonality.

No.

Thanks for that, too.

Would you mind supplying a link to the research if there is one online?
It would help me to put that one to bed at least.



There's no specific research, but a little knowledge of synoptic
meteorology indicates that there's no reason to expect a relationship ~
120 degrees of longitude apart in the mid-latitudes at the same time. A
strong trough moving out of the lee of the Rockies could have a very
deep trough associated with extreme cold anywhere or not at all. The
last two big cold events in Germany that I can find any info on (16 Nov
2000, 23 Dec 2003) were associated with 1 weak tornado and none at all
in the US.

No research on the topic has been done because there's really no reason
to do it. There are an infinite number of things that could be compared
to tornado occurrence in the US. People start by working on those
things that there's some physical reason to believe have a relationship.
Extreme cold in Germany wouldn't be at the bottom of the infinite list,
but it wouldn't be close to the top.

Harold
--
Harold Brooks
Head, Mesoscale Applications Group
NOAA/National Severe Storms Laboratory

Harold Brooks wrote:
In article .com,
says...

Would you mind supplying a link to the research if there is one online?
It would help me to put that one to bed at least.

There's no specific research, but a little knowledge of synoptic
meteorology indicates that there's no reason to expect a relationship ~
120 degrees of longitude apart in the mid-latitudes at the same time. A
strong trough moving out of the lee of the Rockies could have a very
deep trough associated with extreme cold anywhere or not at all. The
last two big cold events in Germany that I can find any info on (16 Nov
2000, 23 Dec 2003) were associated with 1 weak tornado and none at all
in the US.

No research on the topic has been done because there's really no reason
to do it. There are an infinite number of things that could be compared
to tornado occurrence in the US. People start by working on those
things that there's some physical reason to believe have a relationship.
Extreme cold in Germany wouldn't be at the bottom of the infinite list,
but it wouldn't be close to the top.

A small point I may have mislead you on is that I am not talking about
degrees of longitude or latitude. You need a globe and a compass. Just
watch some of the quakes posted on the NEIC site walking along a great
circel on occasion.

Obviously some days the list is too large and flooded with quake on
different lines. But some days it runs clear and true.

There is one prticular thread on which I was talking about the
relationship with cyclones and earhtquakes on another forum some time
ago. I'll find it and post the gist if I can ask you to bother reading
it?

If not, no harm done. By the way can you tell me if any region of the
world has a major fog event ATM? I can find nothing on the subject. I
suspect China. Perhaps one of the major deltas in that neck of the
woods?