Heavy Rainfall September 28th through 29th
The graphics shown in this section are Multisensor Precipitation Estimates, otherwise
known as MPE data, The multisensors involved at this time are radar and precipitation gages.
The image below is a 36 hour total ending on September 29th, 2004 at 8 AM EDT.
When using MPE data, it is important to remember it is vulnerable to the same inaccuracies
that can be caused by either radar or precipitation gages. For radar, problems would be:
freezing or frozen precipitation, low topped convection, bright banding, the reflectivity/rainfall
relationship in use, calibration of the radar, radar location and elevation, range degradation, and
the radar's effective coverage. For precipitation gages, problems come from freezing precipitation,
windy conditions, gage siting, undermeasurement by tipping bucket gages in high intensity rainfall,
and gage maintenance.
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