25 years ago based in Shetland the regional setting was 927 mb which was fun as the altimeters only wound down to 945 mb. Scatsa ATC used the old airforce QNE method to overcome this, (well Wally was ex Lancasters WW2). The water in Lerwick harbour was 1 metre higher than normal. Everything was so still it was eiry. Not to worry the next day the low began to fill and we were back to the normal............................gales.....lowest pressure I have come accross