A few comments on here of late about the Met Office's warning system, so I thought I'd take a trawl through the archives to see how things have changed over the years. Not all dates are available to look at, of course, but I hope the following is of some interest (apologies for the TLDR potential and the slow load times for some):
March 2nd 2001
https://web.archive.org/web/20010302111708/http://www.metoffice.gov.uk:80/
The only type of warning shown was the Flash Warning, where severe weather was expected in the next few hours. No Advanced Warnings for severe weather over the next few days were used. And the map doesn't look correct given the text forecast of snow showers!
Two weather warnings shown here for heavy snow., notable for them being issued by cities (Leeds and Norwich) rather than regional warnings.
"Warnings have been issued by:
Leeds at 10:12 HEAVY SNOW
Norwich at 09:56 HEAVY SNOW "
EDIT: One presumes these are the regional MetO centres that would issue the warnings.
December 22nd 2002
https://web.archive.org/web/20021222192651/http://www.metoffice.gov.uk:80/weather/europe/uk/warnings.html
The Flash Warning is joined by the Advanced Warning (which covers 12 to 48 hours). It could well have come in earlier than this date, but it's the first example I could find.
August 7th 2004
https://web.archive.org/web/20040808014523/http://www.metoffice.gov.uk:80/weather/europe/uk/warnings.html
By now the Advanced Warning is going beyond 48 hours - in this example the warning is issued on Saturday 7th August and covers from 06:00 Sunday 8th to 23:59 Wednesday 11th.
January 18th 2005
https://web.archive.org/web/20050119063315/http://www.metoffice.gov.uk:80/weather/europe/uk/warnings.html
Flash warnings of icy roads, advanced warning for snow. Notice that there's no colour coding in these warnings.
November 24th 2005
https://web.archive.org/web/20051125092218/http://www.metoffice.gov.uk:80/weather/europe/uk/warnings.html
Flash warnings again, but now with a map – don't get excited by the red shading, it is used to denote a warning being present - there's no indication of severity yet. There's also an advanced warning of snow and blizzards below.
December 5th 2006
https://web.archive.org/web/20061205104433/http://www.metoffice.gov.uk/weather/uk/uk_forecast_warnings.html
First sight of a different web address for warnings, plus a different layout with the 5 days warnings maps (note the maps not shading correctly here)
July 20th 2007
https://web.archive.org/web/20070720043312/http://www.metoffice.gov.uk/weather/uk/uk_forecast_warnings.html
Flash warnings of storms and heavy rain plus advanced warnings of storms and rain with a risk map. Warnings still shaded in red, no matter what severity (“Map regions coloured red show where severe weather warnings have been issued.”). That page does look exciting when viewed through 2018 glasses!
July 27th 2008
First occurrence I could find of the graded traffic light system (Be aware – yellow /Be prepared - amber/Take action - red) on the warnings rather than just red shading (though could have been before this – no pages were harvested in early 2008).
https://web.archive.org/web/20080727003021/http://www.metoffice.gov.uk/weather/uk/uk_forecast_warnings.html
July 5th 2009
Another one for storms from 5th July 2009. Difference from 2008 is the warning graphic has changed on top banner from the UK map to a larger graphic on the right colour coded to signify amber alter for storms.
https://web.archive.org/web/20090705145231/http://www.metoffice.gov.uk/weather/uk/uk_forecast_warnings.html
April 4th 2011
https://web.archive.org/web/20110404165641/http://www.metoffice.gov.uk/weather/uk/uk_forecast_warnings.html
General warnings split into weather type icons (rain, wind, snow, ice, fog) on the site and graded according to the severity (yellow/amber/red).
https://web.archive.org/web/20110404164538/http://www.metoffice.gov.uk/news/releases/archive/2011/nswws-changes
Edited by user
Monday, March 12, 2018 7:14:45 PM
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Reason: Not specified
Ben,
Nr. Easingwold, North Yorkshire
30m asl