Temperature Declines During Storms and Irrigation May Contribute to Fire Blight Infection of Pear Fruit

Fig. 4. Fire blight symptoms five days after immature fruit that had been preheated to 95°F were immersed in a 70°F-inoculum suspension of Erwinia amylovora.



Image from Plant Health Progress article:
Temperature Declines During Storms and Irrigation May Contribute to Fire Blight Infection of Pear Fruit