Figure 1. Meteorological data and earthquakes near the magnitude-5.1 Ojai mainshock during Hurricane Hilary in August 2023. (a) The black line shows the atmospheric pressure variations at Oxnard Airport, 23 kilometers (15 miles) away from the magnitude-5.1 Ojai earthquake. The red line shows the atmospheric pressure variations in northeastern Taiwan during the 2009 Typhoon Morakot. The black and red lines are plotted at the same scale. (b) The black bars show rainfall rate at Oxnard Airport before, during, and after the magnitude-5.1 Ojai earthquake. The red bar is rainfall rate in southwestern Taiwan during 2009 Typhoon Morakot. Note the y-axis scales are different to show how much more rain fell in Taiwan in 2009 than in Ojai in 2023. (c) Foreshocks and aftershocks of the magnitude-5.1 Ojai mainshock earthquake within a 10-kilometer radius. Credit: Zhai et al., 2023 CC BY-NC-ND 4.0.

Figure 1. Meteorological data and earthquakes near the magnitude-5.1 Ojai mainshock during Hurricane Hilary in August 2023. (a) The black line shows the atmospheric pressure variations at Oxnard Airport, 23 kilometers (15 miles) away from the magnitude-5.1 Ojai earthquake. The red line shows the atmospheric pressure variations in northeastern Taiwan during the 2009 Typhoon Morakot. The black and red lines are plotted at the same scale. (b) The black bars show rainfall rate at Oxnard Airport before, during, and after the magnitude-5.1 Ojai earthquake. The red bar is rainfall rate in southwestern Taiwan during 2009 Typhoon Morakot. Note the y-axis scales are different to show how much more rain fell in Taiwan in 2009 than in Ojai in 2023. (c) Foreshocks and aftershocks of the magnitude-5.1 Ojai mainshock earthquake within a 10-kilometer radius. Credit: Zhai et al., 2023 CC BY-NC-ND 4.0.

Figure 1. Meteorological data and earthquakes near the magnitude-5.1 Ojai mainshock during Hurricane Hilary in August 2023. (a) The black line shows the atmospheric pressure variations at Oxnard Airport, 23 kilometers (15 miles) away from the magnitude-5.1 Ojai earthquake. The red line shows the atmospheric pressure variations in northeastern Taiwan during the 2009 Typhoon Morakot. The black and red lines are plotted at the same scale. (b) The black bars show rainfall rate at Oxnard Airport before, during, and after the magnitude-5.1 Ojai earthquake. The red bar is rainfall rate in southwestern Taiwan during 2009 Typhoon Morakot. Note the y-axis scales are different to show how much more rain fell in Taiwan in 2009 than in Ojai in 2023. (c) Foreshocks and aftershocks of the magnitude-5.1 Ojai mainshock earthquake within a 10-kilometer radius. Credit: Zhai et al., 2023 CC BY-NC-ND 4.0.

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