Routine Products
- Drought Information Statement updated monthly as conditions warrant
- Hawai`i Rainfall Summary (updated every 3 hours) | 90 day archive (8am bulletin)
- Daily Hawai`i Cooperative Observations | 30 day archive
- 24hr Precipitation Forecast issued daily M-F
Graphical Maps of Hawai`i Rainfall Summary
Updated every 3 hours
Additional Hydrology Resources
- Rainfall Summary Gage Location Maps:
- ROSA cooperative observation location maps:
- Rainfall Graphs
- Hydrology in Hawai`i
- Hydronet automated rain gage network
- Hydronet archived data (online)
- Monthly Precipitation Summaries
Click to receive notifications of new summaries - Standardized Precipitation Index (SPI) data for Hawai`i
Click to receive notifications of new SPI information - Daily Streamflow Conditions from the USGS