Intense hurricane John struck Mexico as a tropical storm at about 21:00 GMT on 3 September. Data supplied by the US Navy and Air Force Joint Typhoon Warning Center suggest that the point of landfall was near 27.6 N, 112.7 W. John brought 1-minute maximum sustained winds to the region of around 64 km/h (40 mph). Wind gusts in the area may have been considerably higher.

The information above is provided for guidance only and should not be used to make life or death decisions or decisions relating to property. Anyone in the region who is concerned for their personal safety or property should contact their official national weather agency or warning centre for advice.

This alert is provided by Tropical Storm Risk (TSR) which is sponsored by Benfield, Royal & SunAlliance, Crawford & Company and University College London (UCL). TSR acknowledges the support of the UK Met Office.