Post-hurricane Analysis of Citrus Canker Spread and Progress towards the Development of a Predictive Model to Estimate Disease Spread Due to Catastrophic Weather Events

Fig. 12. Example of the application of WRIVs to post-storm discoveries of citrus canker in Polk County.

(A) Post-storm citrus canker infections relative to the track of hurricane Charley.

(B) At the time of the initial discovery of the infections, there was no indication of the original foci of inoculum. Using weather data from weather data sites near the known infections, midpoint rays of the WRIV were plotted.

(C) These rays when considered in a "blowing from" indicate the direction of potential initial inoculum sources. Consensus WRIV were calculated and applied to known infections. The infection sites were re-evaluated to determine the age of infections and likely pre-storm infection sites were identified.



Image from Plant Health Progress article:
Post-hurricane Analysis of Citrus Canker Spread and Progress towards the Development of a Predictive Model to Estimate Disease Spread Due to Catastrophic Weather Events