La Crosse Technology WS-8015U Storm Warning Alarm, Air Pressure Tendency for Past Two Hours

when the air pressure stabilizes or begins to rise.

I.Storm Warning Alarm

1.An alarm can be set to warn of a drop in air pressure.

2.Please follow the programming instructions in section F of the Detailed Set Up Guide to activate this alarm

3.When the air pressure drops by the level set, an alarm will sound (if the alarm is activted).

4.To cancel the alarm while sounding press any key.

J.Air Pressure Tendency for Past Two Hours

The bar below the air pressure history chart displays the air pressure change over the past two hours (values based on hPa change, 1 hPa equals 0.03 inHg).

K.Barometric Air Pressure Reading

1.The actual barometric air pressure is displayed directly under the weather forecast icon

2.The relative air pressure is calibrated by the user through the programming mode.

3.Please Follow the programming instructions in section F of the Detailed Set Up Guide to set this feature.

4.To toggle between absolute and relative air pressure, press the “–“key.

L.Air Pressure History Bar Chart

1.The bar graph shows in hPa (Hekto Pascal) the recorded air pressure over the past 30-hours.

2.The horizontal axis shows the hours at increments of –30 hours, - 24 hours, -18 hours, -12 hours, -6 hours, -3 hours, -1 hours, and 0 hours (current).

3.The vertical axis is set by hPa: the “0” on this axis represents the current hPa, and + or – 1,3,5, or 7 shows (in hPa) how high or low the past air pressure was as compared to the current one.

4.The “0” on the vertical axis indicates the current air pressure value.

5.The “0h” on the horizontal axis indicates the current hour, thus the current air pressure also.

6.Each bar on the bar graph represents a value of 0.03 hPa, and each bar also has a corresponding value on the verticle axis.

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