SSHWS modification???? NHC wants comments.

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beagleagle23
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SSHWS modification???? NHC wants comments.

#1 Postby beagleagle23 » Mon Jul 18, 2011 10:48 am

Sorry if repost.

Link: http://www.nhc.noaa.gov/feedback/2011/sshws.php

*stickied by vbhoutex*
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Re: SSHWS modification????

#2 Postby wxman57 » Mon Jul 18, 2011 11:35 am

Hadn't seen that before, thanks.
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Re: SSHWS modification????

#3 Postby artist » Mon Jul 18, 2011 11:35 am

beagleagle23 wrote:Sorry if repost.

Link: http://www.nhc.noaa.gov/feedback/2011/sshws.php


this, in my opinion, is simply a waste of the time and money it would take to change categories by simply 1 mile per hour difference on the top end.

The only advantage I could see is if a top end 3 was a 4, more poeple might take better notice. But still, by 1 mile an hour difference, I don't really think it would.
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#4 Postby artist » Mon Jul 18, 2011 5:24 pm

what is everyone elses opinion on this?
8-)
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Re: SSHWS modification???? NHC wants comments.

#5 Postby Florida1118 » Mon Jul 18, 2011 5:49 pm

I honestly dont care that much. Their the experts, if they see it fit that alright by me. If they dont, then fine by me.
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Re: SSHWS modification???? NHC wants comments.

#6 Postby vbhoutex » Mon Jul 18, 2011 8:37 pm

I think their reasoning is sound, but whether it really needs to be done I am not so sure.
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#7 Postby x-y-no » Tue Jul 19, 2011 9:00 am

Seems to me the simpler solution is to report the wind-speed in knots in all products. Forget about doing conversions. But then I'm a lifetime sailor so I think in knots - this may just be my bias showing up.

If they must keep doing conversions, I suppose the proposed change makes sense.
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#8 Postby Tireman4 » Tue Jul 19, 2011 9:50 am

I guess......Will it matter that much? Public perception, perhaps...?
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#9 Postby RL3AO » Tue Jul 19, 2011 10:35 am

Makes sense to me. Not sure why they are asking. Just do it.
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Re: SSHWS modification???? NHC wants comments.

#10 Postby LarryWx » Tue Jul 19, 2011 11:36 am

On a side nore, notice that the width of cat. 4 increases to 28 mph from 26 mph. Compare that to only 15 mph for cat. 2. Is that ok or should the categories have more uniform sizes? Opinions?
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Re:

#11 Postby southerngale » Tue Jul 19, 2011 10:47 pm

RL3AO wrote:Makes sense to me. Not sure why they are asking. Just do it.


Ditto.
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Re: Re:

#12 Postby Zampanò » Wed Jul 20, 2011 2:53 pm

southerngale wrote:
RL3AO wrote:Makes sense to me. Not sure why they are asking. Just do it.


Ditto.


Thirded. It makes perfect sense, and would alleviate some confusion for forecasters. The average member of the public wouldn't even notice or care.
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Re: SSHWS modification???? NHC wants comments.

#13 Postby plasticup » Wed Jul 20, 2011 4:08 pm

I sent them this:
I spent an embarrassingly long time working on the Wikipedia Tropical Cyclone portal. We were bothered by this same problem and, the internet being what it is, many tempers exploded over it. Although your adjustment of the scale would erase just one minor element of confusion, I can attest that there are many of us who would greatly appreciate the clarity.


LarryWx wrote:On a side nore, notice that the width of cat. 4 increases to 28 mph from 26 mph. Compare that to only 15 mph for cat. 2. Is that ok or should the categories have more uniform sizes? Opinions?

No, you are thinking about it wrong. The NHC estimates wind speed in 5 knot increments. Previously, the Cat 4 interval was 114-135 knots. Storms with estimated wind speeds of 115, 120, 125, 130, and 135 knots were designated Category 4. Going forward with a Cat 4 window of 113-136 knots does not affect which storms are included.

The only difference is that when they convert from knots to mph and then round to the nearest 5 mph, the mph rating still falls into the right category.
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Re: SSHWS modification???? NHC wants comments.

#14 Postby P.K. » Fri Jul 22, 2011 6:49 am

As others have said I'm not sure how this really makes any difference especially as the base units are kts.

I've said it before but personally I'd reduce the scale to three 64kt+ categories in line with the other RSMCs (Inlcuding the JMA if you look at the Japanese advisories) but I can't ever see that happening.
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Re: SSHWS modification???? NHC wants comments.

#15 Postby LarryWx » Sun Jul 24, 2011 12:45 pm

plasticup wrote:
LarryWx wrote:On a side nore, notice that the width of cat. 4 increases to 28 mph from 26 mph. Compare that to only 15 mph for cat. 2. Is that ok or should the categories have more uniform sizes? Opinions?

No, you are thinking about it wrong. The NHC estimates wind speed in 5 knot increments. Previously, the Cat 4 interval was 114-135 knots. Storms with estimated wind speeds of 115, 120, 125, 130, and 135 knots were designated Category 4. Going forward with a Cat 4 window of 113-136 knots does not affect which storms are included.

The only difference is that when they convert from knots to mph and then round to the nearest 5 mph, the mph rating still falls into the right category.


I follow you. However, I'm still wondering about there being five different storm strengths for cat. 4 vs. only three for each of cat. 1-3 even before this mod. Should cat. 4 be wider than the 1-3 cat.'s?
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