WASHINGTON (AP) — The Federal Reserve extended its year-long fight against high inflation Wednesday by raising its key interest rate by a quarter-point despite concerns that higher borrowing rates could worsen the turmoil that has gripped the banking system.

"The U.S. banking system is sound and resilient," the Fed said in a statement after its latest policy meeting ended.

At the same time, the Fed warned that the upheaval stemming from the fall of two major banks is "likely to result in tighter credit conditions" and "weigh on economic activity, hiring and inflation."

The central bank also signaled that it's likely nearing the end of its aggressive streak of rate hikes. In its statement, it removed language that had previously said it would keep raising rates at future meetings. The statement now says "some additional policy firming may be appropriate" — a weaker commitment to future hikes.

In its latest quarterly projections, the policymakers forecast that they expect to raise their key rate just once more — from its new level of about 4.9% to 5.1%, the same peak they projected in December.

Still, the Fed's statement included some language that indicated that its inflation fight remains far from complete. It noted that "inflation remains elevated," and it removed a phrase, "inflation has eased somewhat," that was in its statement in February.

Speaking at a news conference, Chair Jerome Powell said, "The process of getting inflation back down to 2% has a long way to go and is likely to be bumpy."

Despite the Fed's projection that it will impose only one more rate hike, Powell said the central bank may still choose to carry out additional hikes if inflation remained chronically high.

Powell acknowledged that some banks may reduce their pace of lending at a time of high anxiety in the financial system. Any such pullback in lending, he said, could slow the economy and possibly act as the equivalent of an additional quarter-point rate hike.

"Events in the banking system over the past two weeks are likely to result in tighter credit conditions for households and businesses," the Fed chair said. "It is too soon to determine the extent of these effects and therefore too soon" for the Fed to know how or whether its plans for interest rates might be affected.

Wednesday's rate hike, the Fed's ninth since last March, suggests that Powell is confident that the Fed can manage a dual challenge: Cool still-high inflation through higher loan rates while defusing turmoil in the banking sector through emergency lending programs and the Biden administration's decision to cover uninsured deposits at the two failed banks.

The Fed's signal that the end of its rate-hiking campaign is in sight may also soothe financial markets as they digest the consequences of the banking turmoil and the takeover last weekend of Credit Suisse by its larger rival UBS.

Pressed at his news conference about the Fed's missing what observers say were clear signs that Silicon Valley Bank was at high risk of collapsing into the second-largest bank failure in U.S. history, Powell acknowledged that "we do need to strengthen supervision and regulation."

But he declared the overall banking system secure, saying, "These are not weaknesses that are there at all broadly through the system."

With Wednesday's hike, the Fed's benchmark short-term rate has reached its highest level in 16 years. The new level will likely lead to higher costs for many loans, from mortgages and auto purchases to credit cards and corporate borrowing. The succession of Fed rate hikes have also heightened the risk of a recession.

The Fed's latest policy decision reflects an abrupt shift. Early this month, Powell had told a Senate panel that the Fed was considering raising its rate by a substantial half-point. At the time, hiring and consumer spending had strengthened more than expected. Inflation data had also been revised higher.

The troubles that suddenly erupted in the banking sector two weeks ago likely led to the Fed's decision to raise its benchmark rate by a quarter-point rather than a half-point. Some economists have cautioned that even a modest quarter-point rise in the key rate, on top of its previous hikes, could imperil weaker banks whose nervous customers may decide to withdraw significant deposits.

Silicon Valley Bank and Signature Bank were both brought down, indirectly, by higher rates, which pummeled the value of the Treasurys and other bonds they owned. As depositors withdrew money en masse, the banks had to sell the bonds at a loss to pay the depositors. They couldn't raise enough cash to do so.

After the fall of the two banks, Credit Suisse was taken over by UBS. Another struggling bank, First Republic, has received large deposits from its rivals in a show of support, though its share price plunged Monday before stabilizing.

The Fed, the Federal Deposit Insurance Corp. and Treasury Department agreed to insure all the deposits at Silicon Valley and Signature, including accounts that exceed the $250,000 limit. The Fed also created a new lending program to ensure that banks can access cash to repay depositors, if needed.

But economists have warned that many mid-size and small banks, to conserve capital, will likely become more cautious in their lending. A tightening of bank credit could, in turn, reduce business spending on new software, equipment and buildings. It could make it harder for consumers to obtain auto or other loans.

Some economists worry that such a slowdown in lending could be enough to tip the economy into recession. Wall Street traders are betting that a weaker economy will force the Fed to start cutting rates this summer.

Other major central banks are also seeking to tame high inflation without worsening financial instability . Even with the anxieties surrounding the global banking system, for instance, the Bank of England faces pressure to approve an 11th straight rate hike Thursday.

And the European Central Bank, saying Europe's banking sector was resilient, last week raised its benchmark rate by a half point to combat inflation of 8.5%. At the same time, the ECB president, Christine Lagarde, has shifted to an open-ended stance regarding further rate increases

In the United States, most recent data still points to a solid economy and strong hiring. Employers added a robust 311,000 jobs in February. And while the unemployment rate rose, from 3.4% to a still-low 3.6%, that mostly reflected an influx of new job-seekers who were not immediately hired. In its latest quarterly projections, the Fed predicts that the unemployment rate will rise from its current 3.6% to 4.5% by year's end.