Wind speed and gust at max of 56.4mph

Spelve · Post by **Spelve** » Thu 26 Nov 2009 9:10 am

Hi Steve,
I got W8681 in August and all seemed fine till severe weather this week.
Cumulus shows instances of wind speed and gust both reaching 56.4 mph and log records show this figure.
Easy weather is showing higher wind speeds and gusts to 68mph and also shows this on easyweather log.
Cumulus is loaded in own directory and wind gauge set to 80mph with no multipliers.
What have I set wrongly?
Thanks

Post by **steve** » Thu 26 Nov 2009 10:05 am

I'm guessing this isn't really a Cumulus 2 issue, so moved it. But actually, the same answer would apply to Cumulus 2.

If you're running Cumulus and Easyweather alternately, then you will never get the same wind speeds in both. When either of them are using data from the logger, which they will do for the periods they weren't running, then they will only get the snapshots that are in the logger. If the peaks don't occur at the time the data gets written to the logger, they will not be seen by the program that wasn't running at the time.

Spelve · Post by **Spelve** » Thu 26 Nov 2009 10:32 am

Hello Steve,
Thanks for quick response.
I have been using Cumulus 1.8.7 build 819 and only switched temporarily to easy weather when I suspected wind speed was higher than 56mph. It seemed coincidental that several readings were the same at 56.4mph over three days.

Post by **steve** » Thu 26 Nov 2009 10:47 am

Sorry - I didn't notice the significance of that figure! The real explanation is that there was an error in the unofficial spec I was working from, in the wind speed area. This is fixed in 1.8.8, if you want to give it a try (note that it won't correct your existing data).

Spelve · Post by **Spelve** » Tue 01 Dec 2009 4:04 pm

Thanks Steve,
I upgraded to 1.8.8 after your post and recorded gust of 72.7mph to-day.
Now increased the wind gauge to 100mph!
Thanks

Post by **steve** » Tue 01 Dec 2009 4:06 pm

Spelve wrote:I upgraded to 1.8.8 after your post and recorded gust of 72.7mph to-day.

Bring it on!

Post by **daj** » Tue 01 Dec 2009 4:15 pm

Spelve wrote:recorded gust of 72.7mph to-day.

Impressive!

THX · Post by **THX** » Wed 13 Jan 2010 9:13 pm

Spelve wrote:Thanks Steve,
I upgraded to 1.8.8 after your post and recorded gust of 72.7mph to-day.
Now increased the wind gauge to 100mph!
Thanks

Are you saying that the wind gauge automatically adjusts its maximum reading depending on the measured wind speed?

If this is the case, is there an upper limit to how high the gauge will read?

Post by **steve** » Wed 13 Jan 2010 11:32 pm

THX wrote:Are you saying that the wind gauge automatically adjusts its maximum reading depending on the measured wind speed?

It does.

If this is the case, is there an upper limit to how high the gauge will read?

No.

THX · Post by **THX** » Sat 16 Jan 2010 5:59 pm

Spelve wrote:I upgraded to 1.8.8 after your post and recorded gust of 72.7mph to-day.
Now increased the wind gauge to 100mph!
Thanks

Spelve, do you have a screenshot of Cumulus during this event?

What kind of weather event was it? Thunderstorm gust?

Cumulus Support

Wind speed and gust at max of 56.4mph

Wind speed and gust at max of 56.4mph

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Re: Wind speed and gust at max of 56.4mph

Re: Wind speed and gust at max of 56.4mph

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Re: Wind speed and gust at max of 56.4mph