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Bulathsinhala
Bulathsinhala · Kalutara
Not listedFri 9 Oct
Today’s warning doesn’t mention Bulathsinhala
We don’t know about closures or damage: call 119 before you set off.
NBRI, issued Fri 9 Oct, 16:00 · valid to Sat 10 Oct, 16:00lankawatch.org
Rain hereAbout 3 days a month are this wet hereLast 3 days · Satellite estimateNearest rain gaugeKalawellawa (Millakanda) ≥ 66.3 mmFairly heavy rain or more · 2 km awayRiversKalawellawa (Millakanda): Below Alertfalling
Next update usually tomorrow by 17:45.
Rain here
×Rain here
Last 3 days: Unusual here (3 days a month)
- Last 3 days: among the wettest 10% of 3-day periods since 2000 in 148.
- Compared with each division's own satellite record since 2000. This is not a warning and does not replace NBRI's levels. Satellites can miss heavy local downpours, so it never means a road is safe. Satellite data up to 9 Oct, 15:30.
Weather forecast (Department of Meteorology)
- No Department of Meteorology advisory is in force.
- Forecast issued 9 Oct, 14:00
- Showers or thundershowers will occur in the most part of the island after 1.00 p.m.
- Fairly heavy falls above 75 mm are likely at some places in Western, Sabaragamuwa, Central, Uva, North-Western and Southern provinces.
- The general public is kindly requested to take adequate precautions to minimize damage caused by temporary localized strong winds and lightning during thundershowers.
- Misty conditions can be expected at some places in Western, Sabaragamuwa, Central and Uva provinces during the early hours of the morning.
- A forecast never lowers or replaces the NBRI landslide warning above.
- Forecast and advisories by the Department of Meteorology, Sri Lanka, as issued. LankaWatch is not an official service.
Rain outlook (computer model) · Next day: Chance of a rare wet day
- Next day: a chance of a wet day of the kind that comes about 1–2 days a month in 148 (the wettest 5% of days there; several times the usual chance). (10 Oct, 05:30 to 11 Oct, 05:30)
- Next 3 days: unusually heavy rain is not signalled for the divisions on this road. (10 Oct, 05:30 to 13 Oct, 05:30)
- "Not signalled" never means dry or safe. This is a computer model, not a warning, and it never changes NBRI's levels. Like the satellite, it reads hill-country rain low and can miss heavy local downpours.
- ECMWF ensemble forecast (open data, CC BY 4.0), run 9 Oct, 05:30, compared with each division's own satellite record.
None of these changes NBRI’s level.
Weather forecast (Met Dept)
×- No Department of Meteorology advisory is in force.
- Forecast issued 9 Oct, 14:00
- Showers or thundershowers will occur in the most part of the island after 1.00 p.m.
- Fairly heavy falls above 75 mm are likely at some places in Western, Sabaragamuwa, Central, Uva, North-Western and Southern provinces.
- The general public is kindly requested to take adequate precautions to minimize damage caused by temporary localized strong winds and lightning during thundershowers.
- Misty conditions can be expected at some places in Western, Sabaragamuwa, Central and Uva provinces during the early hours of the morning.
- A forecast never lowers or replaces the NBRI landslide warning above.
- Forecast and advisories by the Department of Meteorology, Sri Lanka, as issued. LankaWatch is not an official service.
Rivers and catchments here
×8 named rivers here · 1 basin
River basins this division lies in
- Kalu Ganga basin
Satellite rain over these basins
- Kalu Ganga basin · Last 3 days: Unusual here (3 days a month)
A whole-basin satellite average against that basin’s own record since 2000, not the area upstream of any one point. Satellites under-read hill rain. Not a warning.
Named rivers through this division
- Kuda Ganga (Kalu Ganga basin) · about 17 km inside
- Kalu Ganga · about 9 km inside
- Maha Ela (Kalu Ganga basin) · about 7 km inside
- Botale Ela (Kalu Ganga basin) · about 7 km inside
- Korale Ela (Kalu Ganga basin) · about 6 km inside
- Male liya Dola (Kalu Ganga basin) · about 5 km inside
- Amupitiya Ela (Kalu Ganga basin) · about 4 km inside
- Nindu Oya (Kalu Ganga basin) · about 4 km inside
Irrigation Department gauges on these rivers
- Kalawellawa (Millakanda), an Irrigation Department gauge in this division (773 km² upstream · rain over that area, Last 3 days: Rare here (1–2 days a month)): at least 66.3 mm in the 24 hours to 9 Oct, 08:30 (2 hourly readings missing); 1 mm in the 3 hours to 9 Oct, 20:03.
River level 4.4 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 5, minor flood 6.5, major flood 8 m) - Ellagawa, an Irrigation Department gauge on this river (1,439 km² upstream · rain over that area, Last 24 hours: Rare here (1–2 days a month)): at least 30.3 mm in the 24 hours to 9 Oct, 08:30 (1 hourly reading missing); 5.6 mm in the 3 hours to 9 Oct, 20:01.
River level 6.26 m · Below Alert · falling over about 3 hours (Department’s thresholds: Alert 10, minor flood 10.7, major flood 12.2 m)
Rivers and basins come from our own map of Sri Lanka’s river network. Flow direction, where shown, is worked out from the height of the land. This is orientation only, not a flood warning.
The area draining to a crossing is worked out from a terrain model (about 90 m cells) and is approximate. The rain over it is the satellite average for that same area, against its own record since 2000. Areas under about 150 km² are smaller than the satellite can see, so they show no rain.
River levels are the Irrigation Department’s own readings at its gauge, against its own thresholds. This is not a flood warning: flood warnings come from the Irrigation Department and DMC.