Information

- Alarms: High and Low Threshold from Instant Reading
Outside Relative Humidity (sensor located in ISS)
- Resolution and Units: 1%
- Range: 1 to 100% RH
- Accuracy: ±3% (0 to 90% RH), ±4% (90 to 100% RH)
- Temperature Coefficient : 0.03% per °F (0.05% per °C), reference 68°F (20°C)
- Drift: ±0.5% per year 4
- Update Interval: 50 seconds to 1 minute
- Current Data: Instant (user adjustable) and Hourly Reading; Daily, Monthly, Yearly High and Low
- Historical Data: Hourly Readings; Daily, Monthly Highs and Lows
- Alarms: High and Low Threshold from Instant Reading
Moon Phase
- Console Resolution: 1/8 (12.5%) of a lunar cycle, 1/4 (25%) of lighted face on console
- WeatherLink Resolution: 0.09% of a lunar cycle, 0.18% of lighted face maximum (depends on screen
resolution)
- Range:New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last
Quarter, Waning Crescent
- Accuracy: ±38 minutes
Rainfall
- Resolution and Units: 0.01" or 0.2 mm (user-selectable) (1 mm at totals  2000 mm)
- Range: 0 to 199.99" (0 to 6553 mm)
- Rain Rate: 0 to 40"/hr (0 to 1016 mm)
- Accuracy: Greater of 4% or 1 tip
- Update Interval:20 to 24 seconds
- Storm Determination Method: 0.02" (0.5 mm) begins a storm event, 24 hours without further
accumulation ends a storm event
- Current Data: Totals for Past 15-min, Past 24-hour, Daily, Monthly, Yearly (start date user-selectable) and
Storm (with begin date); Umbrella is displayed when 15 minute total exceeds zero
- Historical Data: Totals for 15-min, Daily, Monthly, Yearly (start date user-selectable) and Storm (with
begin and end dates)
- Alarms: High Threshold from Latest Flash Flood (15-min. total, default is 0.50", 12.7 mm), 24-hour Total,
Storm Total,
- Range for Rain Alarms: 0 to 99.99" (0 to 999.7 mm)
Rain Rate
- Resolution and Units: 0.01" or 0.1 mm (user-selectable) at typical rates (see Fig. 3 and 4)
- Range: 0, 0.04"/hr (1 mm/hr) to 40"/hr (0 to 1016 mm/hr)
- Accuracy: ±5% when rate is under 5"/hr (127mm/hr)
- Update Interval: 20 to 24 seconds
- Calculation Method: Measures time between successive tips of rain collector. Elapsed time greater than
15 minutes or only one tip of the rain collector constitutes a rain rate of zero.
- Current Data:Instant and Hourly, Daily, Monthly and Yearly High
- Historical Data: Hourly, Daily, Monthly and Yearly Highs
- Alarm:High Threshold from Instant Reading
Solar Radiation (requires Vantage Pro2 ISS with solar radiation sensor)
- Resolution and Units: 1 W/m2
- Range:0 to 1800 W/m2
- Accuracy: ±5% of full scale (Reference: Eppley PSP at 1000 W/m2)