* Prompt tracks rally on carbon, crude oil on Greek reversal
* Demand pegged 19 pct below seasonal norms
LONDON, Nov 4 (Reuters) - British gas prices rose on Friday morning, buoyed by a steady decline in temperatures and a brighter economic outlook after Greece scrapped plans to put its EU-IMF bailout package to a public vote.
Monday gas gained 2 pence at 58.60 pence-per-therm despite a day-on-day drop in demand and ample supplies Norway and the Netherlands, flow data from National Grid showed.
Gas for immediate delivery echoed gains in carbon and crude oil markets, adding more than a penny to 57.60 pence after the Greek decision to press ahead with controversial austerity measures without a public vote.
"Things are getting a bit more bullish as crude oil has leapt back above $112 per barrel," a trader with a UK utility said.
Technical factors and thin liquidity may also be behind the unexpected rally in spot prices, another trader said.
"This could be a short-covering rally ahead of the weekend," he said.
Benchmark summer 2012 gas prices edged about 0.30 pence higher at 62 pence in line with bullish crude oil prices.
WEATHER
Britain's Met Office said temperatures are forecast to start cooling from the weekend.
DEMAND AND SUPPLY
Gas demand was pegged 19 percent below seasonal norms, compared with 10 percent below on Thursday, at 234 million cubic meters/day (mcm/day), National Grid data showed.
Imports from Norway via Langeled steadied at around 60 mcm/day, although flows from liquefied natural gas (LNG) terminals fell, with the UK's Isle of Grain terminal halting deliveries altogether.
POWER
Day-ahead baseload traded at 44.9 pounds per Megawatt/hour, tracking gas market sentiment.
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