CFW
|
A Coastal
Flood Watch is issued when Coastal flooding is possible within 12 to 36
hours. |
| A
Coastal Flood Warning is issued when coastal flooding is occurring
or imminent. |
| A
Coastal Flood Statement is issued to update coastal residents on the status
of coastal flooding in the areas covered by a watch or warning. |
| A Heavy
Surf Advisory is a forecast of heavy or high surf that may pose a threat to
life or property. |
| ESF |
A Flood
Potential Outlook may be issued if forecast meteorological conditions
indicate that a significantly heavy precipitation event and/or snowmelt may occur that
would cause flooding or aggravate existing flooding. Usually issued in the range of
36-72hours in advance of the event. |
| ESS |
A Water
Supply Outlook is issued to provide estimates of cumulative flow volumes over
periods of months in support of reservoir operations;also used to convey drought
information. |
| FFA
|
A
Flood/Flash Flood Watch is issued to inform the public that current and/or
developing weather conditions could produce flooding/flash flooding within the next 12 to
24 hours. |
| FFW |
A
Flood/Flash Flood Warning is issued if flash flooding is already occurring or
is imminent it can include flooding from ice jams and failures of water control structures
(dams, levees, etc.). |
| FFS |
A Flood/Flash Flood
Statement is a general statement about flooding, often providing
supplemental/follow up information to a previously issued Flood/Flash Flood Watch or
Warning; may indicate the termination of a Watch or Warning. May also be issued as an
Urban and Small Stream Flood Advisory when flooding is imminent but considered a nuisance
as opposed to life threatening. An Urban and Small Stream Flood Advisory is issued when
flooding of streets, low-lying areas, urban storm drains, creeks and small streams is
occurring or is imminent. |
| FLN |
National Flood
Summary is issued to provide a national summary of recent flooding. |
| FLS |
A Flood Statement
is issued as a follow up to a flood warning. It contains the latest details on
the event; it updates and/or expands information contained in a previous Flood Warning.
A Flood statement may also be used in lieu of a warning if flooding is
forecast, imminent or ongoing and presents no threat to life and property. |
| FLW |
A Flood Warning
is issued for longer term flooding events that focus on larger rivers. The Flood Warning
is issued for specific locations, provides specific stage levels/forecasts, including
crest level and time of occurrence, whenever flooding is forecast, imminent or occurring. |
| LSH |
A Lakeshore Warning is
issued when high waves, beach erosion and flooding is expedite along the shores of the
Great Lakes. |
| RVA |
River Summary
is usually issued daily to provide a summary of recent rainfall and river stage
information. |
| RVI |
River Ice Statement
can contain both narrative and numeric information on river ice conditions. |
| RVR |
A River Recreation
Statement provides current and forecast river and lake conditions as they
pertain to recreational activities; can include flow velocity to describe conditions for
boating, including white water rafting and to indicate dangerous conditions for swimmers
and boaters. |
| RVS |
A River
Statement is issued to describe notable daily river forecasts, ice jams and
ice movements that do not warrant a flood warning or a flood statement. It is also used to
communicate low flows, chemical spills, etc. |
