Daily COOP Reports & Comparisons

Visual comparison of multiple data sources for the once-daily COOP reports. Choose a parameter and date to update the map. Data is valid for the 24-hour period ending near 7 AM local time.

Map Controls

Select the station variable to render on the map.
View Date
Select a date between Feb 1 2009 and today.

Parameter Guide

Precipitation

MRMS 24-hour precipitation is shown as the background raster for comparison against station reports.

Legend for MRMS 24 hour precipitation

How To Read This Map

Use the layer switcher to toggle station networks and the MRMS precipitation background. Click a station label on the map for its full 7 AM report summary.

Data Sources

  • NWS COOP: once-daily cooperative observer reports.
  • CoCoRaHS: volunteer precipitation and snowfall observations.
  • ASOS/AWOS: automated airport observations when available.
  • MRMS: gridded precipitation estimate used as a background comparison layer.

Interactive Map

Use the layer switcher to toggle station networks or MRMS background. Click a station label for details.