Question 1

Why do rainfall amounts vary drastically between stations in 彰化縣?

Accepted Answer

The primary factor is the "orographic lift effect" combined with windward and leeward slope dynamics.

When humid monsoon air masses (such as the summer southwest monsoon or winter northeast monsoon) encounter mountain ranges in 彰化縣, moisture is forced aloft and condenses into dense precipitation clouds.

Consequently, mountainous catchment areas often experience several times the precipitation recorded along low-lying coastal plains.

Question 2

At what rainfall threshold should residents in 彰化縣 be vigilant for urban flooding or mountain hazards?

Accepted Answer

Assessing storm hazards requires distinguishing between short-term burst intensity and prolonged saturation:

1. [Urban Street Inundation]: When 1-hour rainfall exceeds 40 mm, or 3-hour rainfall surpasses 100 mm, municipal storm drains often reach peak conveyance capacity, leading to temporary street flooding in low-lying sectors.

2. [Mountain Landslides & Debris Flows]: When 24-hour accumulation hits 80 mm (Heavy Rain) or 200 mm (Extremely Heavy Rain), steep hillsides approach soil saturation. Residents in 彰化縣 should monitor Ministry of Agriculture debris-flow warning bulletins and avoid mountain travel.

Question 3

What types of weather stations are included in 彰化縣?

Accepted Answer

OpenViz consolidates real-time telemetry from multiple official networks published via the CWA Open Data Platform:

1. [CWA Automated Weather Stations]: Dispersed across populated townships and regional climate nodes.
2. [Water Resources Agency Flood Telemetry]: Stationed around dams and primary river channels for flood retention and drainage coordination.
3. [Soil and Water Conservation Stations]: Dedicated to monitoring high-risk debris-flow watersheds.
4. [Schools and Civic Stations]: Installed on public rooftops to boost microclimate density across local communities.

Question 4

How frequently are station rankings and observation data updated for 彰化縣?

Accepted Answer

Automated observation stations transmit data to the Central Weather Administration every 10 minutes.

OpenViz continuously pulls and processes these updates, allowing you to switch between 1-hour, 3-hour, 12-hour, 24-hour, and today's accumulated rainfall to instantly pinpoint active hotspots.

Station	Location	1 hour	3 hours	12 hours	24 hours
二林	彰化縣二林鎮	0.0	0.0	0.0	0.0
移民庄	彰化縣二林鎮	0.0	0.0	0.0	0.0
萬興(2)	彰化縣二林鎮	0.0	0.0	0.0	0.0
二水	彰化縣二水鄉	0.0	0.0	0.0	0.0
伸港	彰化縣伸港鄉	0.0	0.0	0.0	0.0
防潮門	彰化縣伸港鄉	0.0	0.0	0.0	0.0
北斗	彰化縣北斗鎮	0.0	0.0	0.0	0.0
畜試所彰化	彰化縣北斗鎮	0.0	0.0	0.0	0.0
和美	彰化縣和美鎮	0.0	0.0	0.0	0.0
國三N191K	彰化縣和美鎮	0.0	0.0	0.0	0.0
員林	彰化縣員林市	0.0	0.0	0.0	0.0
埔心	彰化縣埔心鄉	0.0	0.0	0.0	0.0
埔南	彰化縣埔鹽鄉	0.0	0.0	0.0	0.0
埔鹽	彰化縣埔鹽鄉	0.0	0.0	0.0	0.0
國一S218K	彰化縣埤頭鄉	0.0	0.0	0.0	0.0
埤頭	彰化縣埤頭鄉	0.0	0.0	0.0	0.0
三豐	彰化縣大城鄉	0.0	0.0	0.0	0.0
大城	彰化縣大城鄉	0.0	0.0	0.0	0.0
西濱N203K	彰化縣大城鄉	0.0	0.0	0.0	0.0
國一S207K	彰化縣大村鄉	0.0	0.0	0.0	0.0
臺中農改	彰化縣大村鄉	0.0	0.0	0.0	0.0
國一N198K	彰化縣彰化市	0.0	0.0	0.0	0.0
國三N196K	彰化縣彰化市	0.0	0.0	0.0	0.0
國三S202K	彰化縣彰化市	0.0	0.0	0.0	0.0
彰師大	彰化縣彰化市	0.0	0.0	0.0	0.0
永靖	彰化縣永靖鄉	0.0	0.0	0.0	0.0
下水埔	彰化縣溪州鄉	0.0	0.0	0.0	0.0
溪州	彰化縣溪州鄉	0.0	0.0	0.0	0.0
溪湖	彰化縣溪湖鎮	0.0	0.0	0.0	0.0
田中	彰化縣田中鎮	0.0	0.0	0.0	0.0
田尾	彰化縣田尾鄉	0.0	0.0	0.0	0.0
社頭	彰化縣社頭鄉	0.0	0.0	0.0	0.0
福寶	彰化縣福興鄉	0.0	0.0	0.0	0.0
福興	彰化縣福興鄉	0.0	0.0	0.0	0.0
秀水	彰化縣秀水鄉	0.0	0.0	0.0	0.0
田頭村	彰化縣竹塘鄉	0.0	0.0	0.0	0.0
竹塘	彰化縣竹塘鄉	0.0	0.0	0.0	0.0
線西	彰化縣線西鄉	0.0	0.0	0.0	0.0
芬園	彰化縣芬園鄉	0.0	0.0	0.0	0.0
花壇	彰化縣花壇鄉	0.0	0.0	0.0	0.0
王功漁港	彰化縣芳苑鄉	0.0	0.0	0.0	0.0
芳苑	彰化縣芳苑鄉	0.0	0.0	0.0	0.0
西濱S184K	彰化縣芳苑鄉	0.0	0.0	0.0	0.0
西濱S168K	彰化縣鹿港鎮	0.0	0.0	0.0	0.0
頭汴	彰化縣鹿港鎮	0.0	0.0	0.0	0.0
鹿港	彰化縣鹿港鎮	0.0	0.0	0.0	0.0

彰化縣 Live Rainfall

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Stations in 彰化縣

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