At a glance
stream stage
—
feet · Woodlawn Dr
5-min rainfall
—
in/5min · Lyon Arboretum
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Mānoa stream alert
—
stream · rainfall · cascade
USGS stream gauges · upstream indicators + primary gauge
Waihi Stream
—
ft · upper
–
Waiakeakua Stream
—
ft · mid-valley
–
Woodlawn Drive
—
ft · primary
–
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Waihi Stream
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Site 16238500 · Upper watershed · upstream indicator
Stage trend — past 6 readings (~90 min)
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Waiakeakua Stream
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Site 16240500 · Mid-valley · upstream indicator
Stage trend — past 6 readings (~90 min)
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Mānoa Stream at Woodlawn Drive · primary gauge
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Site 16241600 · Drainage area 4.28 sq mi · elev. 130 ft · updates every 15 min
Flood stage indicator · official NWS thresholds
Normal Action 4.5ft Minor 8ft Mod 12ft Major 13ft
Stage trend — past 6 readings (~90 min)
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Stream context · NWS flood stages
Action stage
4.5 ft
Minor flood
8.0 ft
Moderate flood
12.0 ft
Major flood
13.0 ft
Mar 23 2026 peak
~12.5 ft
Aug 16, 2026 peak (Lala)
~14.0 ft
Record (Mar 2006)
~17 ft
At a glance · wind
wind speed
—
mph · Lyon Arboretum
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wind speed
—
mph · Kalāwahine ridge
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Rain gauges · Mānoa / Nuʻuanu corridor
HI Mesonet Live Rainfall
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Stations update every 15 min · 4-second sensor scan · Provisional data · UH Mānoa Mesonet
Lyon Arboretum
HCDP #0501 · Upper Mānoa
—
in / 5min
24hr: —
Reading: —
Kalāwahine
HCDP #0506 · Mānoa–Nuʻuanu ridge
—
in / 5min
24hr: —
Reading: —
Pālolo Mauka
HCDP #0532 · Pālolo Valley
—
in / 5min
24hr: —
Reading: —
NWS radar · Hawaii NEXRAD
Live Doppler Radar · Hawaiʻi
Reflectivity key:
■ Light ·
■ Moderate ·
■ Heavy ·
■ Very heavy ·
■ Intense ·
■ Extreme |
Use "Storm Total Precip" to assess accumulated rainfall during an event
⚗ Test mode — heavy rainfall alert simulation
✓ Clear (no rain)
⚠ Advisory — 2 readings > 0.10
🌧 Warning — 3 readings > 0.15
🌧 Warning — 4 readings > 0.15
NWS weather alerts · Mānoa
Official NWS alerts whose listed area includes Oʻahu/Mānoa. Statewide alerts may also appear.
USGS 16238500 · Waihi Stream
USGS 16240500 · Waiakeakua Stream
USGS 16241600 · Mānoa Stream
UH Mesonet · rain & wind gauges
weather.gov · alerts
rainviewer.com · NEXRAD radar
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