"Dick Lovett" wrote in message
...
0850Z W F3 9999 3CI250 7.1/5.6 Q1035=
09-09Z Tx 9.7 Tn 5.6 Tg 3.8 RR nil. RMK: COTRA. Unusual pressure
oscillations between 1033 and 1036 millibars in last 3 hours and
probably mountain wave induced.

Dick Lovett
Charlbury (Oxfordshire Cotswolds) 121m

Well, I didn't know that was the cause. But here is the evidence from Epping

http://homepage.ntlworld.com/gesc_b/...s/baroblip.htm


--
George in Epping, West Essex (107m asl)
www.eppingweather.co.uk
www.winter1947.co.uk