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Model for potential risk of late blight

Last Update: 8/19/2009 14:44
Late Blight model for the last week and forcasted week.
Weather conditions up to this time have been conducive in the WEST/CENTRAL, EASTERN,
CARMEL, and BLANCA regions of the Valley.
NOTE: The effective current and forecasted dates for the Blanca Station may be offset from the dates of the other 4 locations.
West/Central SLV
Date Rain-Favorable Days Severity Warning
Consecutive In last 7 days Unit Cumulative  
PREVIOUS 8/6/2009 0 0 0 2 No Spray
8/7/2009 1 1 4 6 Heavy Spray
8/8/2009 0 1 1 7 Heavy Spray
8/9/2009 0 1 0 7 Heavy Spray
8/10/2009 0 1 0 7 Heavy Spray
8/11/2009 0 1 0 7 Heavy Spray
8/12/2009 0 1 0 7 Heavy Spray
FORECAST 8/13/2009 0 1 0 7 Heavy Spray
8/14/2009 0 0 0 7 Heavy Spray
8/15/2009 0 0 0 7 Heavy Spray
8/16/2009 0 0 0 7 Heavy Spray
8/17/2009 0 0 0 7 Heavy Spray
8/18/2009 0 0 0 7 Heavy Spray
8/19/2009 0 0 0 7 Heavy Spray
East SLV
Date Rain-Favorable Days Severity Warning
Consecutive In last 7 days Unit Cumulative  
PREVIOUS 8/13/2009 0 0 0 20 Heavy Spray
8/14/2009 1 1 4 24 Heavy Spray
8/15/2009 0 1 1 25 Heavy Spray
8/16/2009 0 1 0 25 Heavy Spray
8/17/2009 0 1 0 25 Heavy Spray
8/18/2009 0 1 0 25 Heavy Spray
8/19/2009 0 1 0 25 Heavy Spray
FORECAST 8/20/2009 0 1 0 25 Heavy Spray
8/21/2009 0 0 0 25 Heavy Spray
8/22/2009 0 0 0 25 Heavy Spray
8/23/2009 0 0 0 25 Heavy Spray
8/24/2009 0 0 0 25 Heavy Spray
8/25/2009 0 0 0 25 Heavy Spray
8/26/2009 0 0 0 25 Heavy Spray
North SLV
Date Rain-Favorable Days Severity Warning
Consecutive In last 7 days Unit Cumulative  
PREVIOUS 8/13/2009 0 0 0 1 No Warnings
8/14/2009 1 1 0 1
8/15/2009 0 1 0 1
8/16/2009 0 1 0 1
8/17/2009 0 1 0 1
8/18/2009 0 1 0 1
8/19/2009 0 1 0 1
FORECAST 8/20/2009 0 1 0 1 No Warnings
8/21/2009 0 0 0 1
8/22/2009 0 0 0 1
8/23/2009 0 0 0 1
8/24/2009 0 0 0 1
8/25/2009 0 0 0 1
8/26/2009 0 0 0 1
Carmel SLV
Date Rain-Favorable Days Severity Warning
Consecutive In last 7 days Unit Cumulative  
PREVIOUS 8/13/2009 0 0 0 33 Heavy Spray
8/14/2009 1 1 4 37 Heavy Spray
8/15/2009 0 1 0 37 Heavy Spray
8/16/2009 0 1 0 37 Heavy Spray
8/17/2009 0 1 0 37 Heavy Spray
8/18/2009 0 1 0 37 Heavy Spray
8/19/2009 0 1 0 37 Heavy Spray
FORECAST 8/20/2009 0 1 0 37 Heavy Spray
8/21/2009 0 0 0 37 Heavy Spray
8/22/2009 0 0 0 37 Heavy Spray
8/23/2009 0 0 0 37 Heavy Spray
8/24/2009 0 0 0 37 Heavy Spray
8/25/2009 0 0 0 37 Heavy Spray
8/26/2009 0 0 0 37 Heavy Spray
Blanca SLV
Date Rain-Favorable Days Severity Warning
Consecutive In last 7 days Unit Cumulative  
PREVIOUS 8/13/2009 0 2 0 4 Alert
8/14/2009 1 2 3 7 Heavy Spray
8/15/2009 0 2 0 7 Heavy Spray
8/16/2009 0 2 0 7 Heavy Spray
8/17/2009 0 2 0 7 Heavy Spray
8/18/2009 0 1 0 7 Heavy Spray
8/19/2009 0 1 0 7 Heavy Spray
FORECAST 8/20/2009 0 1 0 7 Heavy Spray
8/21/2009 0 0 0 7 Heavy Spray
8/22/2009 0 0 0 7 Heavy Spray
8/23/2009 0 0 0 7 Heavy Spray
8/24/2009 0 0 0 7 Heavy Spray
8/25/2009 0 0 0 7 Heavy Spray
8/26/2009 0 0 0 7 Heavy Spray
Weather conditions have been conducive for Late Blight at either 18 severity units or 10
consecutive rain-favorable days.
Spray warnings are the result of further accumulation of rain-favorable days and severity
values.
Hyre Model:
Initial: 10 consecutive rain favorable days
Spray: 5 days of 7 are rain favorable days
Rain-Favorable: 1.2 in. rain in last 10 days and temperature below 78
Wallin Model:
Initial: Cumulative severity value over 18
Severity Value: Based on hours above 90% RH and Average Temp


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