UK GAS-Prices fall as mild weather drives oversupply

March 20 (Reuters) - British wholesale gas prices fell on Wednesday as mild weather created a supply surplus despite declining flows from Norway, traders said.

* Day-ahead gas declined by 0.50 pence to 36.90 pence per therm as of 0938 GMT.

* Within-day gas price down 0.75 pence at 37.00 p/therm.

* Milder-than-expected weather oversupplied the system despite a decline in flows from Norway, and pushed prices lower, a British gas trader said.

* Average daily temperatures in Britain are expected to be 10.1 degrees Celsius on Wednesday and are forecast to rise to 10.4 C on Thursday.

* Demand in Britain was forecast at 224.8 million cubic metres (mcm) per day and flows at 228.6 mcm/day, National Grid data showed.

* Norwegian gas flows to Britain fell to 68 mcm/day, from Tuesday's 72 mcm/day.

* Peak wind power generation is forecast at 7.9 gigawatts on Wednesday and is expected to fall to 7.7 GW on Thursday, National Grid data showed.

* Britain expects four liquefied natural gas tankers by April 2.

* The April contract fell 0.40 pence to 37.00 p/therm.

* The benchmark Dec-19 EU carbon contract fell by 0.11 euro to 21.01 euros per tonne.

* Day-ahead gas at the Dutch TTF hub was down 0.38 euro per megawatt hour at 14.85 euros per MWh. (Reporting by Lefteris Karagiannopoulos in Oslo; Editing by Dale Hudson)