That is moderate to strong by their own scale, http://www.swpc.noaa.gov/NOAAscales/
1 = Minor 2 = Moderate 3 = Strong 4 = Severe 5 = Extreme
That is moderate to strong by their own scale, http://www.swpc.noaa.gov/NOAAscales/
1 = Minor 2 = Moderate 3 = Strong 4 = Severe 5 = Extreme