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Ohio River Forecast Center
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Observed Data Maps

 

A variety of graphics showing observed data is shown in the table below.  The graphics are generated automatically and aren't always quality controlled before they are posted here. (Click the thumbnail for a larger view.) Much of the data includes radar estimates. Estimates are computed using formulas which can vary from radar to radar or from day to day. A table showing the most recent settings from each area radar can be found on our "Z/R Relationships" page. The table below contains the following information:

Data Multi-sensor Radar-Only Gage-Only
Latest 1-hr Precipitation Accumulation thumbnail of latest 1-hr precip thumbnail of latest 1-hr precip thumbnail of latest 1-hr precip
These show the most recent 1-hr precipitation accumulation as computed from Multi-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 a half an hour behind, e.g., precipitation for the hour ending at 10AM will generally be available by 10:30AM.  This depends on system load and areal extent of the precipitation.
Accumulated Precipitation Since Previous Synoptic Hour thumbnail of precip today since last synoptic hour thumbnail of precip today since last synoptic hour thumbnail of precip today since last synoptic hour
These show the most recent N-hr precipitation accumulation as computed from Multi-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 a half hour behind, e.g., precip ending at 10AM will generally be available by 10:30AM.
Accumulated Precipitation Since 7AM EST (8AM EDT) thumbnail of precip so far today since 12Z thumbnail of precip so far today since 12Z thumbnail of precip so far today since 12Z
These show the most recent N-hr precipitation accumulation as computed from Multi-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 a half hour behind, e.g., precip ending at 10AM will generally be available by 10:30AM.  Previous hours of Multi-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) thumbnail of 24-hr precip ending 00Z thumbnail of 24-hr precip ending 00Z thumbnail of 24-hr precip ending 00Z
These show the 24-hr precipitation accumulation for the previous 24 hours (ending at 7PM EST or 8PM EDT) as computed from Multi-sensor Precipitation Estimation (MPE) software.  (See above.)   These products are updated usually by 8PM EST (9PM EDT) each day.
24-hr Accumulated Precipitation Ending 12Z (7AM EST). thumbnail of 24-hr precip thumbnail of 24-hr precip thumbnail of 24-hr precip
These show the 24-hr precipitation accumulation for the previous hydrologic day (ending at 7AM EST or 8AM EDT) as computed from Multi-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). thumbnail of 48-hr precip thumbnail of 48-hr precip
These show the 24-hr precipitation accumulation for the previous hydrologic day (ending at 7AM EST or 8AM EDT) as computed from Multi-sensor Precipitation Estimation (MPE) software.  (See above.)   These products are updated usually by 8AM EST (9AM EDT) each day.
72-hr Accumulated Precipitation Ending 12Z (7AM EST). thumbnail of 72-hr precip thumbnail of 72-hr precip thumbnail of 72-hr precip
These show the 24-hr precipitation accumulation for the previous hydrologic day (ending at 7AM EST or 8AM EDT) as computed from Multi-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). thumbnail of 96-hr precip thumbnail of 96-hr precip thumbnail of 96-hr precip
These show the 24-hr precipitation accumulation for the previous hydrologic day (ending at 7AM EST or 8AM EDT) as computed from Multi-sensor Precipitation Estimation (MPE) software.  (See above.)   These products are updated usually by 8AM EST (9AM EDT) each day.
Monthly Total Precipitation (so far) thumbnail of monthly precip
thumbnail of monthly percent of normal
n/a n/a
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 Multi-sensor Precipitation Estimation (MPE) software.  (See above.)   These products are updated usually by 10AM EST 11AM EDT) each day.
7-Day Total Precipitation thumbnail of 7-day precip
thumbnail of 7-day percent of normal
n/a n/a
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 Multi-sensor Precipitation Estimation (MPE) software.  (See above.)   These products are updated usually by 10AM EST 11AM EDT) each day.
30-Day Total Precipitation thumbnail of 30-day precip
thumbnail of 30-day percent of normal
n/a n/a
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 Multi-sensor Precipitation Estimation (MPE) software.  (See above.)   These products are updated usually by 10AM EST 11AM EDT) each day.
60-Day Total Precipitation thumbnail of 60-day precip
thumbnail of 60-day percent of normal
n/a n/a
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 Multi-sensor Precipitation Estimation (MPE) software.  (See above.)   These products are updated usually by 10AM EST 11AM EDT) each day.
90-Day Total Precipitation thumbnail of 90-day precip
thumbnail of 90-day percent of normal
n/a n/a
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 Multi-sensor Precipitation Estimation (MPE) software.  (See above.)   These products are updated usually by 10AM EST 11AM EDT) each day.
180-Day Total Precipitation thumbnail of 180-day precip
thumbnail of 180-day percent of normal
n/a n/a
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 Multi-sensor Precipitation Estimation (MPE) software.  (See above.)   These products are updated usually by 10AM EST 11AM EDT) each day.
365-Day Total Precipitation thumbnail of 365-day precip
thumbnail of 365-day percent of normal
n/a n/a
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 Multi-sensor Precipitation Estimation (MPE) software.  (See above.)   These products are updated usually by 10AM EST 11AM EDT) each day.
River Gauge Plot thumbnail of river gage plot
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.

National Weather Service
Ohio River Forecast Center
1901 South State Route 134
Wilmington, OH 45177-9708
Page last modified: Tuesday, September 24, 2013 6:42 AM
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