Once again it was warmer overnight than the previous day. That was thanks to the Tropical Maritime Air stream replacing the Arctic Maritime air that had brought the cold. The thermometer rose to 6.8C at 14.14 on Monday then dropped away to a low 5.5C at 17.45. At that time the effects of the arrival of the warmer air stream were observed as the thermometer began to slowly recover and rise to a maximum of 9.7C at 08.00 on Tuesday. Drizzle was conserved at 16.00, ahead of the warm front from increased cloud cover that produced 0.6mm of precipitation.
At first light on Tuesday, in addition to the warmer air, it was very humid with 100% humidity logged at 08.00 that had produced foggy conditions limiting visibility in Marlborough to 200m.
The centre of the anticyclone is now over the Bay of Biscay with the air circulating clockwise feeding the warm, moist air, now on a very light westerly.
