The Pakistani rupee gained slightly against the US dollar on Monday, extending its rally to a 27th straight session in the inter-bank market, though analysts warned that flood-related disruptions could threaten its momentum.

The rupee closed at 281.52, up Re0.03 or 0.01% from the previous session, after ending last week at 281.55. In the open market, the dollar traded at Rs282.35 for buying and Rs282.55 for selling, according to the Forex Association of Pakistan.

Currency data showed mixed movements in other major pairs. The euro slipped by 5 paisa to Rs330.35, the Japanese yen held steady at Rs1.90, while the British pound rose by 82 paisa to Rs382.39, compared with Rs381.56 a day earlier, the State Bank of Pakistan said.

Bloomberg reported that Pakistan’s worst floods in decades have squeezed dollar supplies as many banks and exchange outlets halted operations after being inundated. “The supply of greenbacks has dried up as branches and banks are underwater,” said Saleem Amjad, chief executive of Link International Exchange Co.

The disaster has killed more than 930 people and displaced over four million in the past two months, while also disrupting supply chains. Analysts said the shortage could complicate Islamabad’s efforts to meet International Monetary Fund loan targets and pressure reserves that cover less than three months of imports.

The rupee has climbed 1.2% since its July low, supported by closer military oversight, an S&P Global Ratings upgrade, and a trade deal with the United States. But dealers cautioned that hoarding and disrupted flows could limit further gains.