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[Thundery wintry showers]

It appears that the forecast models didn't pick up on secondary low/shortwave development associated with the northerly (hence the big snowstorm over much of Scotland on the 13th-15th May 1993)- this has often proved a problem with forecast models even in recent times.

[Mr_Data]

BBC Countryfile forecast from the 16th of May 1993

[Mr_Data]

Here's the BBC Countryfile forecast from the 23rd May 1993, unsettled sums it up

[Mr_Data]

Here's the 30th May 1993 Countryfile forecast as we head into the summer of 1993, which was overall on the cool side.

[Norrance]

That 10th January forecast certainly brought back memories for me. January 1993 was a very memorable month of storms, snow and floods in this part of the country and that week was particularly extreme. It followed on a just a few days after the Braer storm that sank the oil tanker off Shetland and culminated in the great Tay flood that hit Perth the next weekend. My own diary for the week in Dundee read like this:
Sun 10th: Mostly cloudy with squally showers turning to snow and hail later. Stormy late.
Mon 11th: Frequent heavy snow showers, some prolonged. Windy. Heavy snow later. Road chaos in Scotland. Blocked in areas from Highlands to coastal Fife. Lowest low pressure this century in North.
Tues 12th: Scotland paralysed by blizzards with Tayside and Fife badly hit. Work closed. Heavy snow early turning sleety and slushy pm. 18 inches of snow at home[Aberfeldy]. Clear and frosty late.
Wed 13th: Calmer, cool and cloudy with a slow thaw. Clear and frosty later.
Thurs 14th. Snow showers overnight and in morning blocking roads again. Rain later.
Fri 15th: Very mild AM with heavy rain and gales. Rapid thaw. Heavy wintry showers pm. Up to Aberfeldy. Amazing snow melt on lower ground from earlier in the week [18 inches plus] but showers late afternoon brought several inches new snow to Dunkeld / Aberfeldy areas making roads very difficult. Stormy winds again. Rivers flooding.
Sat 16th: Mild wet and windy. Further rapid thawing AM. Severe flooding in upper Tay areas.
Sun 17th: Colder. hail and sleet showers turning to snow later. Back to Dundee later. Drier there. Had to take high road to avoid floods,.

That night Perth got hit by the worst flood for more than a Century as the snow melt from the huge catchment areas up river hit the area. The river flow was measured at 100 times normal. Phenomenal when you consider that the Tay normally has a greater flow than the Thames and Severn put together. The river board reckoned that the floods were restricted by over 15% by the hydro schemes in the upper areas as the dams contained a lot of water from the initial thaw. It was also lucky that the weather cooled briefly on the Friday pm and again on Sunday slowing the melt in the higher areas.
The month continued in a changeable mode with snow, thaw, gales and floods but the worst was over.

Edited by Norrance, 22 March 2012 - 22:17 .

[Mr_Data]

Here's the 6th of June 1993 Countryfile forecast and a prediction of a thundery breakdown



Which duly happened

[Mr_Data]

The Countryfile forecast from the 13th June 1993

[Mr_Data]

[Mr_Data]

[Mr_Data]

[Mr_Data]

[snowgirlkent]

Thank you for posting these old forecasts Mr Data, enjoying looking back through them.

[Mr_Data]

[Mr_Data]

25th July 1993