Table 7-1: RA100 strobe description
State
RA100
strobe color
Description
All Clear Blue
All of the following conditions are met:
l
1- and 10-minute running averages of the electric field are less
than |±500 V/m|.
l
No lightning strikes in the last 30 minutes.
Caution
or
Lightning
Watch
Yellow
The CS110enters a Caution state from the All Clear state when either
of the following conditions are met:
l
1-minute running average of the electric field is greater than
|±1000 V/m|.
l
2 or more lightning strikes within a 25-mile radius in a
5-minute period.
l
SG000 detects distant (0 to 20 mile) strikes.
The CS110 enters a Caution state from the Alarm state when both of
the following conditions are met:
l
1- and 10-minute running averages of the electric field are less
than |±1000 V/m|.
l
No close (0 to 5 mile) nor near (0 to 10 mile) strikes in the last
30 minutes.
Alarm
or
Lightning
Warning
Red
The CS110 enters an Alarm state from the Caution state when either
of the following conditions are met:
l
1-minute running average of the electric field is greater than
|±2000 V/m|.
l
SG000 shows close (0 to 5 mile) or near (0 to 10 mile) strikes.
NOTE:
Lightning safety guidelines based on human observations should not be ignored simply
because of the presence of sensitive electronic instrumentation. The NOAA 30/30 rule
suggests seeking shelter if thunder is heard within 30 seconds of a lightning flash (a distance
of approximately 6 miles), and remaining in a sheltered area for 30 minutes after the last
lightning or thunder before resuming outdoor activities [NOAA].
CS110 Electric Field Meter 19
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