Home |
Search |
Today's Posts |
![]() |
|
alt.talk.weather (General Weather Talk) (alt.talk.weather) A general forum for discussion of the weather. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
|
#1
![]() |
|||
|
|||
![]()
October 2005
http://www.climate-uk.com/monthly/0511.htm "This exceptional month was dominated by winds from a southerly quarter almost throughout. With pressure now high over eastern Europe a mainly southerly type persisted until the 18th, although a vigorous frontal trough moved very slowly eastwards across the UK between the 11th and 13th, followed by a sharp but short-lived rise in pressure. Torrential rain in many western districts led to serious but short- lived flooding, notably in Wales and Cumbria. A trough advanced across the country from the southwest on the 19th, introducing a cyclonic spell which lasted until the 25th. Rain fell frequently and often heavily, and hail and thunder occurred in many places. Some 68mm of rain reportedly fell at Ottery St Mary (Devon) on the 19th. It became somewhat colder for a few days in Scotland with some hill snow. Further flooding was reported on the 24th, notably in Northern Ireland [and Wales] between the 23rd and 25th." [A massive Atlantic hurricane ( Wilma-05) ran from15th to 25th October.. I'm not sure when it became a category 5 but it changed the power of the spell from a mere wet and warm one to one with thunder in. That's a knock back of 4 hours in the phase.] "A broad SSW-ly flow brought tropical air from unusually low latitudes during the last seven days of the month. The weather was warm but largely cloudy with rain at times, heavy in the north and west, but the 27th was notably sunny. The 31st was wet in the Southeast and East Anglia." [Two major tropical cyclones were running at the month's end: 27th to31st October.. Cyclone category 3. BETA-05. Atlantic and 29th October to 2nd November.. Cyclone category 2. KAI-TAK-05. NW Pacific. If the knock back is 4 hours for a Cat 5 and a Cat 1 is nearly zero, then the knock back on these was 2 hours for the first and 1 hour for the second at their respective heights.] 25 Oct to 2 Nov 01:17 2 to 9 Nov 01:25 |
#2
![]() |
|||
|
|||
![]()
5 Oct to 2 Nov 01:17
2 to 9 Nov 01:25 9 to 16 Nov 01:57 16 to 23 Nov 00:58 November 2005: "A cyclonic/southwesterly regime prevailed throughout the first twelve days, but from the 13th onwards anticyclonic and northerly types were dominant. With such contrasting episodes, the sea-level pressure anomaly field over Europe and the Atlantic was relatively weak. After a bright first day, the 2nd brought rain and strong winds to all areas but it was exceptionally mild. Another frontal system brought heavy rain to western and northern districts on the 5th and 6th, then two intense secondary depressions swept past the UK's north western seaboard on the 7th/8th and 11th/ 12th, the wind gusting to 80-90kn in the Western Isles on both occasions. Heavy orographic rain [think moist warm air forced to rise over mountains and cool thus losing water] recurred, with 76mm at Capel Curig (Snowdonia) on the former occasion and 101mm at Cassley (Sutherland) on the latter, but between these two systems all regions were mostly dry and sunny on the 9th. It remained warm with highs of 14-17°C on several days. The briefest of northerly outbreaks was followed by a strong but short- lived build of pressure across the British Isles on the 13th and 14th, and this brought a general drop in temperature with frost by night and plentiful sunshine by day. Another northerly outbreak between the 15th and 17th preceded a prolonged rise in pressure which saw the establishment of a large anticyclone over the UK from the 18th-23rd." Without knowing the exact dates that Bolaven and more importantly Bertie were at their height, it's not possible to say when they affected the lunar spells the most. However they were running on: 13th to 20th November. Category 1. Bolaven in the NW Pacific and 19th to 26th November. Category 4. Bertie in the SE Indian ocean. There were snow showers in Scotland on the 16th, otherwise this was a period of cold, settled weather with frosty nights and sunny days. At night temperatures fell widely to between -5 and -8°C on the 19th. Freezing fog formed widely from the 19th onwards, persisting all day in places, and at Pershore (Worcs) the temperature remained below zero from sunset on the 18th to daybreak on the 21st. Elsewhere, many places had five or six consecutive days of unbroken sunshine, and Hastings logged 67 hours of sunshine in the 10-day period 13th-22nd. The anticyclone withdrew to mid-Atlantic on the 24th as a vigorous cold front swept southwards across the country, introducing a northerly flow which lasted until the 29th. The front on the 24th was associated with hail, thunder, violent squalls, and a near-instantaneous temperature drop of 5-8 degC. The next day, heavy snow fell widely in the northern half of Scotland (20cm at Glenlivet), Northern Ireland, Wales, Devon and Cornwall, and hundreds of motorists were stranded overnight on Bodmin Moor following an accident which blocked the A30. The next two days were slightly less cold and rain fell rather than snow, including a fall of 70mm in 48 hours at Boulmer (Northumberland). Snow returned on the 28th, affecting chiefly Yorkshire, Lancashire and the Midlands. It became somewhat less cold on the 30th as the wind backed westerly and rain approached from the Atlantic. The first half of November was the warmest since 1994 (temperatures 2.0-2.5 deg C above normal), while the second half was the coldest since 1993 (3.5-4.0 degC below normal). It was a dry month in most eastern and some southern districts, with less than 30mm of rain over much of Lincolnshire, East Anglia and Kent, but monthly totals were rather above average in northern and western Scotland, north west England, Wales and Cornwall. Sunshine aggregates were above normal practically everywhere, and approached twice the long-term mean locally in north east England and the Midlands. Averaged over England and Wales this was easily the sunniest November in a record stretching back to 1881. http://www.climate-uk.com/monthly/0511.htm Ah well, since there isn't a storm of any sort extant this spell so far, I suppose it all moot. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|