WASHINGTON — The Senate voted overwhelmingly Tuesday to reauthorize the National Flood Insurance Program through Nov. 30, less than 12 hours before it was set to expire. President Donald Trump is expected to sign the reauthorization before midnight to avoid a lapse.

Texas Sens. John Cornyn and Ted Cruz both voted in favor of the temporary reauthorization, which passed 86-12.

“With the 2018 hurricane season already underway and catastrophic storms from last year like Hurricane Harvey still fresh on our mind, I supported today’s effort,” Cornyn said in a written statement.

The program provides $1.3 trillion in coverage for 90 percent of the U.S. flood insurance market, which amounts to over 5 million policies. Payouts to property owners impacted by Hurricane Harvey — most in southeast Texas — are estimated to top $11 billion.

This is the seventh short-term reauthorization for the program since its long-term authorization lapsed in December.

The NFIP has racked up over $40 billion in debt since it was begun. Lawmakers have long agreed that reforms are necessary, though they have been unable to agree on specifics.

"It's imperative that we guard against impending national disasters while continuing to hunt for reforms to this program," Cornyn said. About 1 in 5 Texas homeowners has flood insurance, according to estimates from insurance experts.

The House voted 366-52 to extend the program last week. At that time, the White House announced its support for “efforts to ensure the program does not lapse” in addition to “reforms to the program to ensure its long-term viability.”

Dallas Rep. Jeb Hensarling — the chair of the House Financial Services Committee who is retiring at the end of this term — has been a vocal opponent of the reauthorization.

Hensarling believes the program amounts to “a government monopoly” that is “fiscally unsustainable.” Despite Congress forgiving $16 billion in debt, the NFIP currently owes $20.5 billion to the Treasury Department.

He has also long complained that it encourages development in flood zones while providing repeated payouts for flood-prone properties, which account for 2 percent of policies but 30 percent of claims.

"I cannot in good conscience look another flood victim in the eye this summer and tell them a reform-less date change was the best Congress could do," he wrote to colleagues last week in an email obtained by The Dallas Morning News.

Five other Texas Republicans joined Hensarling in opposing the temporary extension: Reps. Joe Barton of Arlington, Mike Conaway of Midland, Sam Johnson of Plano, John Ratcliffe of Heath and Roger Williams of Austin.

The House passed a five-year reauthorization and reform package 237-189 in November, but it remains untouched in the Senate.