GRACE-FO drought maps for Asia

Forecasts and bulletins

Status key grace_drought_asia {date, maps: [{id: gws|rtzsm|sfsm, title, url, pdf}], legend}.

Limits. Coarse (~300 km underlying resolution); weekly.

How to read it

Wetness percentile vs 1948-2012: dark red <= 2, red 2-5, orange 5-10, tan 10-20, yellow 20-30, white 30-70 normal, blues wetter.

Why it matters for Koh Samui

Shows long-lasting El Nino drought in Thailand's groundwater and soils.

Sources

• nasagrace.unl.edu

ENSO status now

ONI (NOAA CPC)

+1.80 °C, JJA 2026 (previous +1.39 °C)

RONI (NOAA CPC)

+1.36 °C, JJA 2026

Nino 3.4 weekly (NOAA CPC / OISST)

+3.0 °C anomaly, week of 16 Sep 2026 (SST 29.6 °C)