6th-11th March Wintriness

Added by Daniel Finch
Published 9 March 2023

Description


• Heavy snow showers into North Scotland from 6th; 10cm in Lerwick, Shetland by afternoon 6th and 9cm in Altnaharra by midnight 7th.
• Heavy snow showers in Aberdeenshire overnight 6th-7th; 14cm in Dyce, Aberdeen by morning 7th.
• Minimum temp -7.6°C Altnaharra overnight 6th-7th.
• Cold day on 7th in far N of Scotland; maximum of -0.6°C in Wick, coldest March day since at least 1973 for the station and also first March ice day within those years.
• Snow depth of 16cm in Altnaharra by midnight 8th.
• Very cold in the north overnight 7th-8th, notably so across Highland Scotland with minimums; -15.4°C Kinbrace, -14.7°C Loch Glascarnoch & -14.6°C Altnaharra. Elsewhere, Shap in Cumbria -10.5°C, Dyce in Aberdeen -9.0°C, Wick -8.7°C (2nd lowest March temp on record for the station since 1973) & Castlederg in N Ireland also -8.7°C (lowest March temp on record for the station, records back to 1995).
• Snow event across much of S Wales & C/S/SE England early hours and into morning of 8th, snow amounts quite widely 2-5cm, as much as 5-10cm over hills. 9cm in Liscombe (nearly 350m ASL), 8cm Odiham, 4cm Larkhill & 3cm St Athan. 8-10cm reported across higher parts of Surrey.
• Further snow across Wales and Midlands/C England during afternoon/evening 8th, snow depths by late evening include; 9cm Lake Vyrnwy (360m ASL), 5cm Coleshill, 4cm Sennybridge & 2cm Bedford.
• Cold day for most of the UK on 8th with maximums widely +0 to 3°C, ice day for higher ground Wales with a maximum of -1.5°C at Lake Vyrnwy.
• Extremely cold across Highland Scotland overnight 8th-9th, low of -16.0°C Altnaharra, lowest March temp in the UK since 2010 and =3rd lowest March temp for the station since at least 1993.
• Three separate amber snow & ice warnings running from afternoon 9th overnight to morning 10th; one for inland N England/Yorkshire, one for N Wales and one for E/SE Northern Ireland to the south of Belfast.
• Another cold day on 9th away from milder S England, maximums widely -0 to 2°C. Two consecutive very cold days for Altnaharra in the Highlands on 8th/9th with maximums -2.4°C/-2.3°C, the two coldest March days for the station since at least 1993.
• Minimum temp -13.6°C Altnaharra overnight 9th-10th.
• Major snow event with blizzards and drifting across a large part of the UK on 9th/10th; level snow depths of up to 20cm in N Ireland, 30cm mid/north Wales, Shropshire, Derbyshire and widely across Yorkshire and up to 40 to 50cm across higher parts of the Pennines with depths of 50cm seen in the Sheffield and Bradford area. Snow drifts widely 5 to 10ft across parts of the Pennines, Yorkshire Dales etc. Weston Park in Sheffield had its snowiest March day in many decades with 30cm on morning 10th, previous reliable record was 27cm on 18/03/1979. Greatest snow depths across the Met Office network include; 27cm Capel Curig, 24cm Thorncliffe-Leek, 18cm Lake Vyrnwy, 17cm Bingley, 13cm Glenanne, 11cm Lough Fea & 9cm Keswick.
• Minimum temp -15.7°C Altnaharra overnight 10th-11th.
• Less cold for many by 11th but still cold in the far N of Scotland, especially on Shetland with afternoon high of -1.7°C Lerwick and -1.4°C Baltasound, although 24 hour maximum ended up above freezing with a higher temp by morning 12th.
• Extremely cold on Shetland early in the night 11th-12th while mainland UK less cold; minimum -8.4°C Baltasound, 2nd lowest March temp on record for the station behind only -8.8°C 02/03/2001 and colder than the record from the old village site which was open from 1914-1995, the March record over those years being -8.3°C in March 1924. Lerwick minimum -6.5°C is the lowest March temp on record for the station since 1973 and, remarkably, lower than anything recorded in the month of January over those decades with a January record of -6.0°C since 1973.

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