Winter storms, early January 2012

A major winter storm brought very strong winds across much of the UK on 3 January 2012.

The worst affected area was southern Scotland - particularly the Central Belt - where winds gusted at well over 70 knots (81 mph). In this area, this storm was judged as the most severe for 13 years - since 26 December 1998, with wind speeds exceeding those of the recent storm of 8 December 2011. Very strong winds were also experienced across much of England, Wales, and Northern Ireland, with winds here also widely gusting at 50 to 60 knots (58 to 69 mph).

This storm was followed by a further extremely windy spell from 4 to 5 January 2012 - with further damaging winds across northern and eastern England. These storms followed a particularly turbulent spell of weather from late November to mid-December.

Impacts

On 3rd, fallen trees blocked roads and rail lines and damaged power lines. Rail services from Edinburgh to Glasgow and Inverness to Aberdeen were suspended. The Forth, Tay and Kingston road bridges were closed, with restrictions elsewhere. Ferry services were delayed and flights from Glasgow and Edinburgh airports were cancelled. More than 100,000 Scottish homes and businesses were left without electricity and some buildings were damaged.

It was a similar picture across Northern Ireland, with travel delays, power cuts and building damage. In England and Wales, impacts included fallen trees, overturned lorries and building damage. A man was killed in Kent by a falling tree, and a bus driver seriously injured. A crewmember was killed as a vessel in the English Channel was struck by a large wave. The QE11 bridge on the M25 was closed for several hours as was the port of Dover.

The following links from the BBC News provide some indication of the impacts experienced during this period.

Further very strong winds overnight 4th / 5th January caused further damage and disruption, particularly in eastern and northern England. The QE11 bridge on the M25 was again closed, with restrictions on the Humber and Severn bridges. Fallen trees and overturned lorries blocked many roads. Some train services were also disrupted due to trees and overhead wire problems.

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Weather data

Synoptic situation at 0600 GMT on 3 January 2012, as a deep Atlantic depression tracks NNE across the UK.

jan wind 2012 03

On 3 January, the strongest winds were across Scotland's central belt, gusting at well over 70 knots (81 mph) and up to 89 knots (102 mph) at Edinburgh, Blackford Hill - strong enough to cause some structural damage. Several stations in this area recorded their highest gust speeds for 13 years - making this the most significant storm experienced in southern Scotland since the Boxing Day storm of 26 December 1998 (Table 1). Maximum gust speeds in this area were higher than those of either 8 December 2011 or 11-12 January 2005.

Winds gusted at between 50 to 60 knots (58 to 69 mph) across most of Northern Ireland and Wales, and much of England, apart from the Midlands. Exposed coastal and upland locations saw gusts of over 70 knots (81 mph). Central parts of England experienced gusts more typically of 45 to 50 knots (51 to 58 mph). Across the mountain summits of northern Britain, winds gusted at up to 94 knots (108 mph) on Cairngorm summit (1237 m.a.s.l.) and 92 knots (106 mph) at Great Dun Fell, Cumbria (847 m.a.s.l.) - see Figure 1.

The highest mean hourly wind speeds on 3 January exceeded 40 knots (46 mph) across much of southern Scotland, and around the coasts of Northern Ireland, Wales, and southern England (Figure 2).

Table 1: Highest gust speeds 3 January 2012 (excluding mountain stations)
StationElevation (m.a.s.l.)Max gust speed (knots)Highest gust since
Edinburgh, Blackford Hill1348926 December 1998 93 knots
Salsburgh, Lanarkshire2778426 December 1998 95 knots
Islay, Port Ellen1784Highest gust on record - previously 26 December 1998 83 knots
Aberdaron, Gwynedd95818 January 2005 89 knots
Drumalbin, Lanarkshire2458026 December 1998 82 knots
Machrihanish, Argyll108026 December 1998 82 knots
Glasgow, Bishopton5979Highest gust on record - previously 28 January 2002 67 knots. Records from 1999 only
Capel Curig, Gwynedd216757 February 2011 75 knots
Dunstaffnage, Argyll3758 December 2011 76 knots
Edinburgh, Gogarbank5774Highest gust on record - previously 28 January 2002 71 knots. Records from 1999 only
Isle of Portland, Dorset527425 December 1999 80 knots

Figure 1: Highest gust speeds (knots) 3 January 2012

jan wind 2012 max gust 03

Figure 2: Highest mean hourly wind speed (knots) 3 January 2012

jan wind 2012 mean speed 03

The strong winds were accompanied by rain and hill snow in Scotland and a narrow band of very intense rainfall moving across southern England, associated with a cold front, as shown in the radar rainfall map Figure 3.

Figure 3. Radar image at 1030GMT on 3 January 2012, showing a line of intense rainfall associated with a cold front moving across southern England.

radar jan 2012

Synoptic situation at 0000 GMT on 5 January 2012, with the next system bringing strong winds to much of northern and eastern England.

A second spell of very windy weather from 4 to 5 January again resulted in widespread disruption. The strongest winds were across northern and eastern England, gusting at 50 to 60 knots (58 to 69 mph), with the highest winds across the top of the Pennines (Table 2). High Bradfield (South Yorkshire) recorded a gust of 81 knots (93 mph), and winds gusted at up to 97 knots (112 mph) on Great Dun Fell, Cumbria, at 847 m.a.s.l. (Figure 4). Mean hourly wind speeds reached 40 knots (46 mph) in exposed coastal locations and at higher elevations across northern England and Wales (Figure 5).

Table 2: Highest gust speeds 4 to 5 January 2012 (excluding stations above 500 m.a.s.l.)
StationElevation (m.a.s.l.)Max gust speed (knots)Highest gust since:
High Bradfield, South Yorkshire3958118 January 2007 86 knots
Capel Curig, Gwynedd2167611 November 2010 79 knots
Islay, Port Ellen17713 January 2012 84 knots - see Table 1
Winter Hill, Lancashire440713 January 2012 73 knots - see Table 1
Shap, Cumbria 2527128 January 2002 72 knots
Keswick, Cumbria 8168Highest gust on record - previously 8 January 2005 67 knots.
Emley Moor, West Yorkshire26767Highest gust on record - previously 8 January 2005 65 knots.

Figure 4: Highest gust speeds (knots) 4 to 5 January 2012 (0000GMT 4th to 0000GMT 6th)

jan wind 2012 mean speed 05

Figure 5: Highest mean hourly wind speed (knots) 4 to 5 January 2012 (0000GMT 4th to 0000GMT 6th)

jan wind 2012 mean speed 05

Last updated: 6 June 2014