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uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
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Statistical and reflective 2004 annual summary
Temperatures Days above 80ºF. 1 Days above 70ºF. 17 Ice days. 0 Highest max. +27.1ºC (August 8th) Lowest max. +1.6ºC (January 28th & December 25th) Average max. +12.8ºC Highest Min. +16.3ºC (August 9th & September 4th) Lowest Min. -7.4ºC (February 29th) Lowest grass min. -10.3ºC (March 1st) Average min. +5.4ºC Average temp. +9.1ºC Anomaly +0.9ºC Precipitation Total 1007.4mm Anomaly 112% Highest 24hr 34.4mm (October 24th) Peak intensity (10 min's) 38.4mm/hour (August 6th) Days of 0.2mm or more 270 days Days of 1.0mm or more 158 days Days of 25.0mm or more 2 days Longest period without 7 days (4th March - 11th March) Sunshine Total 1261.5hrs Anomaly 100% Highest 24hr 13.7hrs (June 25th) Days with over 12hrs 9 days Sunless days 86 days Wind Days with direction: N 51 NE 36 E 4 SE 24 S 68 SW 99 W 65 NW 4 calm 15 Prevailing WSW Days with Gales: 2 Highest 10 minute mean: 39mph (December 23rd) Highest gust: 56mph (March 20th) Windiest 24hr: 21mph (December 14th & 23rd) mean wind speed: 7.4mph Other notables Air frosts: 55 days Air frost duration: 508.4hrs Ground frosts: 90 days Snow falling: 20 days Snow lying: 9 days Greatest snow depth: 4cm (December 28th) Total snow (fresh falls): 10cm Thunder/lightning: 10 days Fog @ 9am: 16 days Mean Humidity 84.1% Lowest humidity 27% (September 8th) MSLP 1012.2mb Highest SLP 1038.6mb (September 7th) Lowest SLP 971.3mb (January 8th) Very brief monthly summary January - Mild, wintry end February - Mild, cold & dry end March - Fairly dry April - Mild and breezy May - Mild, wet start, then dry June - Rather warm, wet end July - Rather cool, warming up later August - Warm & very wet, particularly 1st half September - Warm start, Breezy midmonth October - Wet November - Very mild and rather dry December - Mild, windy periods. Exceptional dates (Top 5 by preference) 1) May 10th - Warm and sunny day quickly changing to severe thunderstorm with spectacular cumulonimbus venting violent and very rapid rates of lightning. 2) January 28th - Remarkable polar trough passage mid morning, leading to a short lived blizzard with thunder and nose-diving temperatures. 3) August 5th/6th - Overnight, slow moving thunderstorm. 4) August 8th-12th - Warmest day of the year followed by 5 days of very wet weather and local flooding (120mm) 5) March 19th - Heavy, unexpected snow early morning. Additional comments 2004 has seen the least fresh snowfall on record, with an alarming mere 10cm of fresh falls throughout. Also the latest air frost (12th November) and equal latest snowfall (18th December) on site records. Both July and October were cooler than average, but only slightly. Wettest August on record by far and very possibly the wettest in locally recorded history (?) But despite this, and a preponderance for NE breezes, it was nonetheless also one of the warmest Augusts on record. Annual thunderstorm incidence definitely seems to be rising in the central lowlands (albeit from a very low starting point).- I'll let others explain why or disagree. On the whole, slightly warmer than last year but not as warm as 1997, 1999 or 2000. A rather wet year, but not exceptionally so. And the least sunny since 1998. Graphical representations and other titbits are as ever available in the climate section of my website, URL below. A happy and peaceful 2005 to you all. Alex. ºººººººººººººººººººººººººººººººººººººººººººº Alex Stephens Jr Wishaw, North Lanarkshire, Scotland N55º47'14", W3º55'15". 360ft/117m amsl http://www.alex114.pwp.blueyonder.co.uk/ ºººººººººººººººººººººººººººººººººººººººººººº |
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