NOAA Center for Satellite Applications and Research banner
National Oceanic & Atmospheric Administration website NOAA Center for Satellite Applications and Research website

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-East 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 GOES-East is in rapid scan mode. The estimates may be too high for cold cloud tops and too low for warm cloud tops. The use of this product is at the discretion of the user. For more details see this technique description.

The model has been updated (January 2000) to include a moisture correction based on the NCEP GFS model, and to reduce the overestimates which occur in wide-spread convective regimes.


Due to the discontinuation of browser support for ftp protocol, the data links below are now offered via https. Command line access via ftp will continue for the time being at the ftp version of these file locations. Command line access to the https data folders can be performed via WGET or CURL.

Compressed Digital Rainfall Data In GrADS Format - Central America
GrADS Archive
1-Hour Data
3-Hour Data
6-Hour Data
24-Hour (ending 12Z) Data