Data and images displayed on STAR sites
are provided for experimental use only and are
not official operational NOAA products.
STAR Satellite Rainfall Estimates
Hydro-Estimator - Central America
Automatic Satellite-Derived Precipitation Estimates
This home page provides real time rainfall rate estimates over Central
America based on cloud top temperature measurements from the GOES-12
satellite 10.7 micron channel. The estimates are adjusted by Precipitable
Water (PW) and mean Relative Humidity (RH) computed by the NAM model. The 1-
hour rainfall rate averages and the accumulated 3-hour estimates are
available every hour starting at 00:00Z with updates every 15 minutes after
the hour. The accumulated 6 hours estimates are updated at 00:15Z, 06:15Z,
12:15Z and 18:15Z and the 24 hours accumulation every 12:15Z. All IR image
starting 00:00Z are also available. The estimates are not available when the
GOES-12 is in rapid scan mode. This product has been calibrated and
validated only for the continental United States (US). The estimates may be
too high for cold cloud tops and too low for warm cloud tops. For more
details see this technique description.
The model has been updated (January 2000) to include a moisture
correction based on the NCEP AVN model, and to reduce the overestimates
which occur in wide-spread convective regimes.
Rain Rates in Central America and Mexico, Supplied as GIF images