Moody's

The downgrade affects $2.1 billion in bond debt and extends to its utility debt.

Moody's also upgraded other Florida locality bonds recently as a result of a revised cities and counties rating methodology.

Florida's Aaa credit is a factor in all the upgrades, the rating agency said.

S&P Global Ratings placed more than 400 state and local government issuers under criteria observation as the agency adopts an updated rating methodology.

"That's great news, and it reflects the outstanding work and commitment of our city council and my administration to keep Tampa on rock-solid financial footing," said Tampa Mayor Jane Castor.

The agency cited a sustained commitment to healthy reserves and structural balance.

Moodys says it is placing additional weight on the states' Aaa ratings in determining the Garvee ratings.

Both ratings agencies cited the health system's improved liquidity in recent years.

"The upgrades incorporate our view of New Hampshire's improved economic and demographic growth trends that continue to perform near or above those of the U.S. and regional peers," said analyst Thomas Zemetis.

Set to be priced by Jefferies on Monday for retail investors and on Tuesday for institutions, New York City's tax-exempt general obligation bond deal is tentatively structured in four series with two subseries.