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Disease risks from yesterday's rain

Soon after I posted the last one, a line of thunderstorms passed Winchester area.  The estimated wetness event started at 1PM of 5/15 and ended at 9AM this morning (5/16).  The amount of precipitation was about 0.4 inches, and the average temperature was about 70F.  It was long and warm enough for Phomopsis, black rot, and downy mildew.

We ended up not receiving much rain today.  I hope those of you who needed a protective or curative-activity material for vines found a window for application as well.
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Disease risks from yesterday's rain

Winchester area received precipitations from thunderstorms yesterday.  It started around 3:30PM and lasted until 7:00PM.  The actual amount of precipitation was not high (0.05 in) compared with other northern VA regions where a severe thunderstorm warning was issued, but since the ending part of the thunderstorm hit during the evening, the relative humidity was high (>90%) until 2 AM or so.  Thus, it accounted for 11.5 hours of wetness with the average temperature of 73F.  It was warm and long enough for Phomopsis, black rot, and downy mildew. We are still having chances of rain (40-60%) until Monday.
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