I was just perusing Met Eireann's website, checkin' out the Irish weather.
There are certain weather warnings that I'm used to seeing on our National Weather Service's website for our area of Northern California: rainstorms in winter, fire conditions in summer, high wind or dense fog warnings at any time, for example. But I have never seen this particular one on this side of the Atlantic:
Weather conducive to the spread of potato blight will exist for a time today (Sunday) and again during Tuesday and Wednesday There will be opportunities for spraying this evening and for much of Monday
Issued at 22:00 on 03-Jul-2010
Note that this is on the national weather website, not one dedicated to agricultural issues. Some things remain close to the surface for a very long time.