June 7 (Reuters) - British wholesale prompt gas prices rose on Tuesday morning with supply from Norway expected to fall on Wednesday while contracts in the Dutch market eased, as rising storage levels continued to soothe wider concerns over Russian gas flows this winter.

In the British gas market, the contract for immediate delivery rose by 2 pence to 129 pence per therm by 0844 GMT, with the day-ahead contract lifting 2 pence to 130 p/therm.

Norwegian gas imports are set to drop 170 million cubic metres (mcm) on Wednesday due to maintenance, providing some bullish impetus, analyst Wayne Bryan at Refinitiv said in a morning note.

In the Dutch gas market, the July contract fell by 2.44 euros to 79.00 euros/MWh.

The Dutch front-month is now trading below its 1-year average closing price, analysts at Engie EnergyScan said in their daily note.

"This would mean that bearish spot fundamentals are taking over concerns on Russian supply. A decisive turning point, which will have to be confirmed during the day," Engie's analysts said.

Improved gas stock levels gradually reduced the Russian supply risk, they added.

European gas storages are 49.4% full at present, almost in line with their 5-year average, data from Gas Infrastructure Europe showed.

Meanwhile, a drop in Russia supply through the Nord Stream pipeline is being offset by weaker summer demand, Daniel Hynes, senior commodity strategist at ANZ bank said in a note.

Nord Stream 1 flows to Germany via the Baltic Sea fell to 65,538,490 kilowatt hours per hour (kWh/h) on Tuesday morning from around 67,600,000 kWh/h over the previous 24 hours, in line with customer requests.

At the same time, eastbound gas flows via the Yamal-Europe pipeline from Germany to Poland stopped on Tuesday.

In the European carbon market, the benchmark contract rose by 0.56 euros to 81.99 euros a tonne. (Reporting by Nora Buli in Oslo; Editing by Susanna Twidale)