11.   Instead of issuing severe thunderstorm warnings in these cases, the National Weather Service posts flood warnings or flash flood warnings.

12.   Last week, responding to the flood warnings, Napa residents had pitched in to fill sandbags.

13.   Not only is this office, which is located in State College, Pa., responsible for flood warnings and watches, it also monitors river levels during drought.

14.   On Tuesday, a series of strong thunderstorms prompted flood warnings in northeastern Arizona.

15.   The county also is under a flood warning.

16.   The National Weather Service issued a flood warning for all of coastal New York, New Jersey and Connecticut until Thursday evening.

17.   Various creeks and rivers in Southern California and the Central Valley were overflowing and flood warnings remained in some spots Wednesday morning.

18.   Puerto Rico was under a flood warning Monday after the Guanajibo River and other streams in the area swelled beyond their banks.

19.   A coastal flood warning has been discontinued for the north coasts of Puerto Rico from Camuy to Arecibo and from San Juan to Fajardo.

20.   A coastal flood warning is already in effect for the U.S. Virgin Islands and is likely to be extended to Culebra and Vieques this afternoon.