Explanation of Statements Issued by Local Offices

Product	Usage
Flash Flood Warning	Warns of a rapidly developing flooding occurring within 6 hours of the causative event. [FFW]
Flash Flood Statement	Provides information that supplements earlier Flash Flood Warning.  [FFS]
Flood Watch	Identifies areas where there is a risk of flooding, but flooding is not certain. [FFA]
Flood Warning	Warns of floods developing more than 6 hours after causative event. May provide information on forecast stream levels and describe impacts of past flooding at forecast levels. [FLW]
Flood Statement	Updates or expands information in previously issued Flood Warning. [FLS]
Hydrologic Outlook	Provides long lead time information about flood potential or water supply conditions. [ESF]
Hydrologic Statement	River forecasts and related information.  May include stage levels, flow volume, current speed and water temperatures.  [RVS]
Hydrologic Summary	Summarizes recent rainfall and river stages, and where appropriate, information on ice conditions. [RVA]
Daily River and Lake Summary	Provides routine river and lake information. [RVD]
National Flood Summary	Provides a nationwide summary of recent flooding. [FLN]
Hydrometeorological Discussion	Provides an overview of current and expected hydrometeorological conditions across a River Forecast Center area of responsibility.  Information may include: (1) antecedent precipitation, (2) existing streamflow conditions, (3) future precipitation events of hydrologic interest, and (4) expected river trends and potential for flooding. [HMD]
Water Supply Outlook	Provides extended forecast of the amount of water that will flow past a river location over a period of time (months or seasons).  It is also used to provide (hydrologic) drought information. [ESS]
River Recreation Statement	Provides information on current and forecasted river and lake conditions. [RVR]
River Ice Statement	Provides information on river ice locations, extent and thickness. [RVI]