Mtera Catchment — JAXA GSMaP_NOW

Rainfall RATE (mm/hour) · official JAXA near-real-time product · Mtera outline from supplied GeoPackage · times in Tanzania (EAT, UTC+3)

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Local rainfall field: awaiting verified JAXA fileNo observation time claimed.
JAXA NOW not yet supplied to this website
Official JAXA viewer above is available immediately.
Mtera catchment · true GeoJSON boundary
Rainfall raster pending
Reference inset mapReference inset · click to enlarge
JAXA NOW:rainfall rate (mm/h) 0.1–0.5 0.5–1 1–2 2–5 5–10 10–20 20–40 40+

Accumulated Mtera rainfall since ParkHQ machine ZFO

From 29 September 2026. Catchment-mean rainfall depth (mm), using a separate validated JAXA daily series. Not the Salimwani–Msembe rainfall-equivalent volume graph.

Daily accumulation not published: awaiting validated JAXA catchment data (no values invented).

Data and interpretation

When the server publishes a processed JAXA NOW file, the rainfall overlay and actual UTC/EAT observation time appear here. The map checks for updated metadata every 2 minutes.

Background: NASA GIBS Blue Marble shaded relief (terrain only, not rainfall). No Google Maps, OpenStreetMap or NASA rainfall tiles are used; the polygon follows the real coordinates.

GSMaP_NOW is an immediate rainfall diagnostic, not a rainfall forecast. Missing satellite values are not displayed as zero rainfall.

Official NOW mapJAXA user guideParkHQ ROF monitoring graph

Satellite rainfall: Global Satellite Mapping of Precipitation (GSMaP) © JAXA/EORC. Basemap: NASA GIBS Blue Marble. Catchment boundary: supplied Mtera GeoPackage. Native NOW grid: approximately 0.1°; colored overlay preserves the native grid.