Daily El Niño update

El Niño update, September 25: what to know

California: Flash Flood Warning and Red Flag Warning in effect as of 3:52 PM, Sep 25 Pacific. NOAA's Climate Prediction Center ENSO status: El Niño Advisory.

NOAA’s current status

El Niño Advisory

ONI +1.8 °C (JJA 2026) · next CPC update October 8, 2026 · CPC discussion (opens in a new tab)

What CPC, ONI, NWS and D0–D4 mean
CPC
NOAA’s Climate Prediction Center, which sets the El Niño and La Niña status (Watch, Advisory) once a month.
ONI
The Oceanic Niño Index: how much warmer (+) or cooler (−) than normal the surface of the central Pacific Ocean was over three months. The letters are the months, so JJA is June, July and August. El Niño conditions are +0.5 °C or warmer.
NWS
The National Weather Service, which issues the weather watches, warnings and advisories for your area.
D0–D4
The U.S. Drought Monitor’s levels: D0 abnormally dry, D1 moderate drought, D2 severe, D3 extreme and D4 exceptional drought. Each percentage is the share of the state at that level or worse.

Region by region

California and the Sierra

11 active alerts

What’s happening

What to watch for

Active NWS alerts: Flood Advisory: 3 (CA) · Lake Wind Advisory: 3 (CA) · Flash Flood Warning: 2 (CA) · Air Quality Alert: 1 (CA) · Beach Hazards Statement: 1 (CA) · Red Flag Warning: 1 (CA)

Southern California

3 active alerts

What’s happening

What to watch for

No items for this region in this post.

Active NWS alerts: Beach Hazards Statement: 1 (CA) · Flash Flood Warning: 1 (CA) · Flood Advisory: 1 (CA)

The Southwest

23 active alerts

What’s happening

What to watch for

Active NWS alerts: Flash Flood Warning: 9 (NM) · Flood Advisory: 3 (AZ, NM) · Flood Watch: 3 (NM) · Lake Wind Advisory: 3 (NV) · Red Flag Warning: 2 (NV) · Special Weather Statement: 2 (AZ, NM) · Flood Warning: 1 (NM)

The Gulf Coast

10 active alerts

What’s happening

What to watch for

Active NWS alerts: Flash Flood Warning: 3 (TX) · Flood Watch: 3 (TX) · Air Quality Alert: 2 (TX) · Severe Thunderstorm Warning: 1 (TX) · Special Weather Statement: 1 (TX)

The Southeast

39 active alerts

What’s happening

What to watch for

Active NWS alerts: Coastal Flood Advisory: 14 (FL, GA, SC, NC) · High Surf Advisory: 8 (FL, GA, NC) · Rip Current Statement: 8 (FL, GA, NC) · Coastal Flood Warning: 3 (NC) · Beach Hazards Statement: 2 (SC, NC) · Flood Warning: 2 (FL) · Coastal Flood Statement: 1 (FL) · Wind Advisory: 1 (NC)

U.S. Drought Monitor figures weren’t available for this update, for California; California; Arizona, New Mexico, Nevada and Utah; Texas, Louisiana, Mississippi and Alabama; Florida, Georgia, South Carolina and North Carolina.

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