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Data
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Multi-sensor
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Radar-Only
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Gage-Only
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Description
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These show the most recent 1-hr precipitation accumulation as
computed from Muti-sensor Precipitation Estimation (MPE) software.
This software attempts to give a more accurate assessment of the
"real" precipitation by merging the horizontal detail
of the 88-D network with the assumed accuracy of the rain gage network.
The radar rings shown extend 230 km outward from the radar site
to show the extent of radar coverage. Only those radars used
in the generation of this product are shown. Blue rings mean that the radar is operating
properly, but had detected no accumulated precipitation for the
hour. Green rings mean the radar contributed at
least some estimated precip to the product. Red
rings indicate that the radar data was not available for this hour.
This product is updated hourly and usually lags less than an hour
behind, e.g., precipitation for the hour ending at 10AM will generally
be available by 11AM. This depends on system load and areal
extent of the precipitation. |
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These show the most recent N-hr precipitation accumulation
as computed from Muti-sensor Precipitation Estimation (MPE) software.
(See above.) N represents the number of hours since
the most recent synoptic hour (7 and 1 AM and PM EST, or 8 and 2
AM and PM EDT). These products are updated hourly and lags
about an hour behind, e.g., precip ending at 10AM will generally
be available by 11AM. |
Accumulated Precipitation
Since 7AM EST (8AM EDT)
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These show the most recent N-hr precipitation accumulation
as computed from Muti-sensor Precipitation Estimation (MPE) software.
(See above.) N represents the number of hours since
7AM EST (8AM EDT). These products are updated hourly and lags
about an hour behind, e.g., precip ending at 10AM will generally
be available by 11AM. Previous hours of Muti-sensor Precipitation
Estimation (MPE) information that have been edited will be reflected
in this product when the next hourly iteration occurs. |
24-hr Accumulated Precipitation
During Previous 00Z-00Z Day (7PM to 7PM EST or 8PM to 8PM EDT)
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These show the 24-hr precipitation accumulation for the previous
24 hours (ending at 7PM EST or 8PM EDT) as computed from Muti-sensor
Precipitation Estimation (MPE) software. (See above.)
These products are updated usually by 8PM EST (9PM EDT) each day.
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24-hr Accumulated Precipitation
Ending 12Z (7AM EST).
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These show the 24-hr precipitation accumulation for the previous
hydrologic day (ending at 7AM EST or 8AM EDT) as computed from Muti-sensor
Precipitation Estimation (MPE) software. (See above.)
These products are updated usually by 8AM EST (9AM EDT) each day. |
48-hr Accumulated Precipitation
Ending 12Z (7AM EST).
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These show the 24-hr precipitation accumulation for the previous
hydrologic day (ending at 7AM EST or 8AM EDT) as computed from Muti-sensor
Precipitation Estimation (MPE) software. (See above.)
These products are updated usually by 8AM EST (9AM EDT) each day. |
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72-hr Accumulated Precipitation
Ending 12Z (7AM EST).
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These show the 24-hr precipitation accumulation for the previous
hydrologic day (ending at 7AM EST or 8AM EDT) as computed from Muti-sensor
Precipitation Estimation (MPE) software. (See above.)
These products are updated usually by 8AM EST (9AM EDT) each day. |
96-hr Accumulated Precipitation
Ending 12Z (7AM EST).
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These show the 24-hr precipitation accumulation for the previous
hydrologic day (ending at 7AM EST or 8AM EDT) as computed from Muti-sensor
Precipitation Estimation (MPE) software. (See above.)
These products are updated usually by 8AM EST (9AM EDT) each day. |
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Monthly Total Precipitation
(so far)
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n/a
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n/a
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These show the monthy precipitation accumulation (so far) and
percent of normal (so far in the month) as of the end of the previous
hydrologic day (ending at 7AM EST or 8AM EDT) as computed from Muti-sensor
Precipitation Estimation (MPE) software. (See above.)
These products are updated usually by 10AM EST 11AM EDT) each day. |
7-Day Total Precipitation
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n/a
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n/a
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These show the 7-day precipitation accumulation and 7-day percent
of normal as of the end of the previous hydrologic day (ending at
7AM EST or 8AM EDT) as computed from Muti-sensor Precipitation Estimation
(MPE) software. (See above.) These products are
updated usually by 10AM EST 11AM EDT) each day. |
30-Day Total Precipitation
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n/a
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n/a
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These show the 30-day precipitation accumulation and 30-day percent
of normal as of the end of the previous hydrologic day (ending at
7AM EST or 8AM EDT) as computed from Muti-sensor Precipitation Estimation
(MPE) software. (See above.) These products are
updated usually by 10AM EST 11AM EDT) each day. |
60-Day Total Precipitation
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n/a
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n/a
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These show the 60-day precipitation accumulation and 60-day percent
of normal as of the end of the previous hydrologic day (ending at
7AM EST or 8AM EDT) as computed from Muti-sensor Precipitation Estimation
(MPE) software. (See above.) These products are
updated usually by 10AM EST 11AM EDT) each day. |
90-Day Total Precipitation
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n/a
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n/a
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These show the 90-day precipitation accumulation and 90-day percent
normal as of the end of the previous hydrologic day (ending at 7AM
EST or 8AM EDT) as computed from Muti-sensor Precipitation Estimation
(MPE) software. (See above.) These products are
updated usually by 10AM EST 11AM EDT) each day. |
180-Day Total Precipitation
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n/a
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n/a
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These show the 180-day precipitation accumulation and 180-day
percent of normal as of the end of the previous hydrologic day (ending
at 7AM EST or 8AM EDT) as computed from Muti-sensor Precipitation
Estimation (MPE) software. (See above.) These
products are updated usually by 10AM EST 11AM EDT) each day. |
365-Day Total Precipitation
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n/a
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n/a
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These show the 365-day precipitation accumulation and 365-day
percent of normal as of the end of the previous hydrologic day (ending
at 7AM EST or 8AM EDT) as computed from Muti-sensor Precipitation
Estimation (MPE) software. (See above.) These
products are updated usually by 10AM EST 11AM EDT) each day. |
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Basin Average (computed) 24-hr Precipitation
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n/a
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n/a
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It shows the most recent 24-hr precipitation accumulation ending
at 12Z as computed from Muti-sensor Precipitation Estimation (MPE)
software, then averaged over each of the 468 sub-basins.
This product is usually updated by 19Z. The data used to generate
this product are retrieved from the CRWRRMxxx products
that are sent out from the RFC. They are based on hourly Stage
III Multi-sensor grids summed to 24 hours (see 24-hr 12Z precip
above). This is what is used in the river model as "observed"
precipitation (Computed Mean Areal Precip). |
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It shows color-coded dots representing river status categories
at that point, e.g., whether the stage at that point is in flood,
below flood but high in its banks, or is at low or normal flow,
etc. Black dots mean that the site is missing some criteria, such
as Action Stage or Flood Stage, such that it cannot be determined
what color the dot should be. Most of these black-dotted sites are
those used for modeling only and no official flood stage (etc.)
has ever been established. |
www.nws.noaa.gov
