Case Study Results
*Using Reflectivity on Surfaces of Constant Temperature*



Old Threshold Set Descriptions: (unique values highlighted in blue)
Temp. Sfc.
 -20C      
-20C     
-40C      
 -40C      
Criteria Set
 1
 2
 1
 2
dBZ Threshold (dBZ)
 50
 30
 50
 30
"Caution" Area Threshold (km^2)
 20
 200
 10
 100
"Bad" Area Threshold (km^2)
 40
 400
 20
 200
"Ugly" Area Threshold (km^2)
 80
 800
 40
 400
Area Threshold to begin tracking (km^2)
 40
 400
 n/a
 n/a
Tracking Search Radius (km)
 15
 15
 n/a
 n/a
Storm Area Projected Path Lead Time (min)
 30
 30
 n/a
 n/a
Alert Buffer for Operations Area (km)
 50
 50
 n/a
 n/a
"Haboob Possible" Threshold (km^2)
 n/a
 2500
 n/a
 n/a
"Strong Haboob Possilble" Threhold (km^2)
 n/a
 7000
 n/a
 n/a



New Threshold Set Descriptions: (unique values highlighted in yellow)
Temp. Sfc.
 -20C      
-20C     
-40C      
 -40C      
Criteria Set
 1
 2
 1
 2
dBZ Threshold (dBZ)
 50
 30
 50
 30
"Caution" Area Threshold (km^2)
 40
 		400
 		20
 		200
"Bad" Area Threshold (km^2)
 80
 		1000
 		40
 		400
"Ugly" Area Threshold (km^2)
 180
 		2400
 		80
 800
Area Threshold to begin tracking (km^2)
 80
 		1000
 		n/a
 n/a
Tracking Search Radius (km)
 15
 15
 n/a
 n/a
Storm Area Projected Path Lead Time (min)
 30
 30
 n/a
 n/a
Alert Buffer for Operations Area (km)
 50
 50
 n/a
 n/a
"Haboob Possible" Threshold (km^2)
 n/a
 5000
 n/a
 n/a
"Strong Haboob Possilble" Threhold (km^2)
 n/a
 10000
 n/a
 n/a



Cases:   Updated!  

Case Date
 Domain
 Time Freq
 Description
07/14/2002 2100Z
 AZ
 15 min
 Activity over Phoenix area.  Uses old thresholds.
07/14/2002 High Res
 AZ
 5 min
 Activity over Phoenix area.  Uses *new* thresholds.  New!
08/05/2002 1815Z
 AZ
 15 min
 Hail and heavy rains in Southeast Arizona.  Uses old thresholds  New!