Mexico Subnational Rainfall Indicators: Dekadal CHIRPS and Forecast Data

Mexico subnational rainfall indicators provided by the World Food Programme (WFP) based on CHIRPS satellite imagery and GEFS forecasts. The data tracks 10-day, 1-month, and 3-month precipitation levels, averages, and anomalies across administrative units. Records are updated six times per month to transition from forecasts to final observations.

Use Cases

• Drought monitoring using rainfall anomaly percentages (rfq) to identify moisture deficits
• Agricultural trend analysis comparing 3-month rolling aggregations (r3h) to long-term averages (r3h_avg)
• Disaster risk modeling using the type column to differentiate between forecast and final observations

Strengths

• Integrates CHIRPS-GEFS short-term forecasts with historical CHIRPS v2 imagery
• Standardized Pcode references for subnational administrative units
• Includes pixel counts (n_pixels) to indicate aggregation density

Limitations

• Satellite-derived precipitation estimates may require local calibration against ground stations
• Data for recent dekads is subject to revision as it moves from forecast to final status

Provenance

Source

World Food Programme (WFP) using CHIRPS v2 and CHIRPS-GEFS

Collection Method

Aggregated from Climate Hazards Group InfraRed Precipitation satellite imagery and in-situ station data

Freshness

Updated six times per month on the 1st, 6th, 11th, 16th, 21st, and 26th.

Geography

Mexico