Fair Isle 09z 230deg 18kt 20km FEW ST 1500 BKN SC 3500 OVC AS 10000
+4.4/+0.8 1004.2hPa +2.4/3hr
and at 06z +5.8/-6.5 giving 41% RH
Yesterday afternoon/evening interesting as small developing low
tracked ENE between Fair Isle and Sumburgh - eventually leaving us in
a F9 NW'ly.
1600z aircraft being vectored onto an approach for 09 at Sumburgh
queried surface winds. Was told 120deg at 20kt. The pilot replied he
had SW'ly 50kts at 2500ft, range 7 miles. Shortly later commented
that between 2000ft and 1500ft, range 4 miles wind became 120deg. In
his words it was "Quite bumpy"!
Early Friday evening - after one aircraft had aborted a landing due
to cross-winds gusting 60kt and severe turbulence (only runway 27/06
is allowed after dark) following aircraft were advised not to attempt
a landing and once they had turned back for Aberdeen, Inverness etc
the airport closed.
Quite unsettled here this last week as four deep lows (pressure
falls/rises usually in excess of 10hPa/3hrs) passed close by.
Pointless exercise really, but pressure falls totaled 107hPa and
rises 128hPa in the seven days.
Dave
Fair Isle