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Latest Cumulus MX V4 release 4.0.1 (build 4023) - 16 May 2024
(Note that 4.1.0 (build 4024) - 05 June 2024 remains available, but usage of this version is not recommended - particularly for Davis stations - and the included utility in this distribution for migrating to v4 is known to contain errors affecting conversion of dayfile.txt)
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Legacy Cumulus 1 release 1.9.4 (build 1099) - 28 November 2014
(a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
Latest Cumulus MX V4 release 4.0.1 (build 4023) - 16 May 2024
(Note that 4.1.0 (build 4024) - 05 June 2024 remains available, but usage of this version is not recommended - particularly for Davis stations - and the included utility in this distribution for migrating to v4 is known to contain errors affecting conversion of dayfile.txt)
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Legacy Cumulus 1 release 1.9.4 (build 1099) - 28 November 2014
(a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
UK Storm Fionn impact
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UK Storm Fionn impact
A band of heavy rain has now moved into NW England but what is really noticeable is the big drop in pressure. Currently falling very rapidly at 2.88hPa / hr.
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- dazza1223
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Re: UK Storm Fionn impact
same here worthing
Barometer 1003.39 hPa Falling quickly -1.94 hPa/hr
Barometer 1003.39 hPa Falling quickly -1.94 hPa/hr
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Re: UK Storm Fionn impact
But interestingly winds have dropped off slowly all day. I suspect they'll increase significantly as the low moves to the east overnight.
Pressure now falling 3.22hPa /hr. Pity Cumulus doesn't keep these records. This is a big one.
UPDATE: Now dropping at 3.56hPa/hr.
Pressure now falling 3.22hPa /hr. Pity Cumulus doesn't keep these records. This is a big one.
UPDATE: Now dropping at 3.56hPa/hr.
Last edited by RayProudfoot on Wed 17 Jan 2018 11:04 pm, edited 1 time in total.
- dazza1223
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Re: UK Storm Fionn impact
yh same here where are about are u? i think Cumulus does keep these records.
Lowest Pressure (sl) 968.98 hPa at 05:33 on 20 November 2016
Lowest Pressure (sl) 968.98 hPa at 05:33 on 20 November 2016
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Re: UK Storm Fionn impact
This is not storm Fionn, Ray. This is where the naming system creates so much confusion. Storm Fionn was a small kink in the isobars that delivered gusts in excess of 70mph across Northern Ireland yesterday, so Met Eireann named it. The Met Office didn't name tonight's system, neither did Met Eireann. Interesting though, as it has undergone RaCy, and will continue to deepen as it exits the UK.
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Re: UK Storm Fionn impact
Cheshire. It's in my location. I'm not talking about lowest pressure. I'm talking about greatest drop (or rise) in pressure in one hour.dazza1223 wrote:yh same here where are about are u? i think Cumulus does keep these records.
Lowest Pressure (sl) 968.98 hPa at 05:33 on 20 November 2016
- dazza1223
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Re: UK Storm Fionn impact
o i never uses cumulus the 1st one mate soz
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Re: UK Storm Fionn impact
Ah right. That explains why there was no reference to Fionn on the UKMO site. Bizarre though because this one looks like it will deliver strong winds as it moves east.Mapantz wrote:This is not storm Fionn, Ray. This is where the naming system creates so much confusion. Storm Fionn was a small kink in the isobars that delivered gusts in excess of 70mph across Northern Ireland yesterday, so Met Eireann named it. The Met Office didn't name tonight's system, neither did Met Eireann. Interesting though, as it has undergone RaCy, and will continue to deepen as it exits the UK.
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Re: UK Storm Fionn impact
Check that squeeze on the isobars - gonna be nasty down the Eastern side. Also, notice that cold air being wrapped around on the Northern flank.. no wonder there's an amber warning out for another 15 - 20cm snow. Lucky sods!
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Re: UK Storm Fionn impact
Looks nasty for 0100-0500 for this neck of the woods. I'd be surprised if we get snow here but the Pennines will suffer as usual.
Pressure now dropping at 3.74hPa/hr. Must be a record.
Pressure now dropping at 3.74hPa/hr. Must be a record.
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Re: UK Storm Fionn impact
Numbers don't mean much but a graph does...
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Re: UK Storm Fionn impact
Just had a 46mph gust.
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Re: UK Storm Fionn impact
Northerners always have more impressive curves!
Wind is picking up here now but nothing over 30mph yet. But pressure drop continues to impress. 3.79hPa/hr now. It's tempting to stay up and watch it but I probably won't.
23:45 update: 3.96hPa/hr drop!
Wind is picking up here now but nothing over 30mph yet. But pressure drop continues to impress. 3.79hPa/hr now. It's tempting to stay up and watch it but I probably won't.
23:45 update: 3.96hPa/hr drop!
- dazza1223
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Re: UK Storm Fionn impact
here it come
Wind Speed Latest Gust 29.0 mph Beaufort F4 (Moderate breeze)
Wind Speed Latest Gust 29.0 mph Beaufort F4 (Moderate breeze)
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Re: UK Storm Fionn impact
Warm front passed through in the last 90 mins.
3.63hPa/hr drop. That's it peaked. Now for the wind. I'm off to bed. Pick this up later today.
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