" NINO3.4 Index
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NSW/ACT Thu 13:14 EST: Coastal Wind Warning   Thu 11:28 EST: Severe Weather Warning for NSW   Thu 11:14 EST: Sheep Graziers Warning   Thu 10:48 EST: Flood Warning - Murrumbidgee River   Thu 10:41 EST: Flood Warning - Culgoa, Bokhara, Narran   Thu 10:31 EST: Flood Warning - Peel and Namoi Rivers   Thu 10:08 EST: Flood Warning - Murray River   Thu 09:54 EST: Flood Warning - MacQuarie River   Thu 09:53 EST: Flood Warning - Bogan River   Thu 09:10 EST: Flood Warning - Lachlan River   Wed 14:43 EST: Flood Warning - Warrego River   Wed 13:48 EST: Potential Flood Alert 1   Wed 11:00 EST: Flood Warning - Barwon-Darling US Bourke   Wed 11:00 EST: Flood Warning - Paroo River   Queensland Thu 11:12 EST: Flood Warning - Thomson/Barcoo/Cooper Ck   Thu 11:05 EST: Flood Warning - Moonie River   Thu 10:43 EST: Flood Warning - Paroo River   Thu 10:28 EST: Flood Warning - Georgina/Eyre Ck   Thu 10:09 EST: Coastal Strong Wind/Gale Warning   Thu 10:08 EST: Flood Warning - Bulloo River   Thu 10:03 EST: Flood Warning - Fitzroy River   Thu 09:26 EST: Flood Warning - Macintyre/Weir   Thu 08:59 EST: Flood Warning - Warrego River   Thu 08:31 EST: Flood Warning - Condamine-Balonne Rivers   South Australia Thu 12:40 CST: Flood Warning - Onkaparinga River   Thu 12:13 CST: Sheep Graziers Warning   Thu 11:49 CST: Flood Watch   Thu 11:02 CST: Coastal Wind Warning   Thu 10:21 CST: Severe Weather Warning for SA   Thu 07:12 CST: Road Weather Alert   Tasmania Thu 13:02 EST: Flood Warning - South Esk   Thu 13:02 EST: Flood Warning - Macquarie   Thu 12:08 EST: Flood Warning - Meander River   Thu 11:25 EST: Coastal Wind Warning   Thu 11:22 EST: Severe Weather Warning for TAS   Thu 11:15 EST: Flood Warning - North Esk River   Thu 10:34 EST: Flood Watch   Thu 10:21 EST: Sheep Graziers Warning   Victoria Thu 13:15 EST: Flood Advice - Central District   Thu 12:58 EST: Flood Warning - Goulburn River   Thu 10:56 EST: Flood Warning - Campaspe River   Thu 10:50 EST: Severe Weather Warning for VIC   Thu 10:39 EST: Coastal Strong Wind/Gale Warning   Thu 10:15 EST: Flood Warning - Kiewa River   Thu 09:43 EST: Flood Warning - Loddon River   Thu 08:10 EST: Flood Warning for Seven Creeks and Castle Creek   Thu 04:38 EST: Sheep Graziers Warning   Wed 14:49 EST: Flood Advice - North East Victoria   Wed 14:44 EST: Flood Advice - North Central District   Wed 14:42 EST: Flood Advice - North West Victoria   Western Australia Thu 10:00 WST: Coastal Wind Warning  

NINO3.4 Index

Weekly / Monthly
NINO3.4 Index

The NINO3.4 index is one of several El Niņo/Southern Oscillation (ENSO) indicators based on sea surface temperatures.

NINO3.4 is the average sea surface temperature anomaly in the region bounded by 5°N to 5°S, from 170°W to 120°W. This region has large variability on El Niņo time scales, and is close to the region where changes in local sea-surface temperature are important for shifting the large region of rainfall typically located in the far western Pacific.

An El Niņo or La Niņa event is identified if the 5-month running-average of the NINO3.4 index exceeds +0.4°C for El Niņo or -0.4°C for La Niņa for at least 6 consecutive months.