Kalawana
Kalawana DS division · Ratnapura district
Level 1 · WatchFri 9 Oct
Watch in Kalawana
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 gaugeRambuka MV (NBRI) 6 mmLight rain · 6 km awayMet advisoryAdvisory for Severe LightningAmber, as issuedRivers8 named rivers here
Next update usually tomorrow by 17:45.
Share as textNBRI’s advice, as issued
×NBRI’s advice, as issued:Since the rainfall within the past 24 hours has exceeded 75mm, if the rain continues, be watchful on the possibility of landslides, slope failures, rock falls, cutting failures and ground subsidence.
NBRI, issued Fri 9 Oct, 16:00 · valid to Sat 10 Oct, 16:00
Rain here
×Rain here
Last 3 days: Unusual here (3 days a month) · Amber · Advisory for Severe Lightning
- Last 3 days: among the wettest 10% of 3-day periods since 2000 in Kalawana.
- Last 7 days: among the wettest 10% of 7-day periods since 2000 in Kalawana.
- 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, 13:30.
Weather forecast (Department of Meteorology) · Amber · Advisory for Severe Lightning
- Amber · Advisory for Severe Lightning. For Western, Sabaragamuwa, Central, Uva, North-western, Southern provinces and Anuradhapura, Mannar districts.. Thundershowers accompanied with severe lightning are likely to occur at several places in Western, Sabaragamuwa, Central, Uva, North-western and Southern provinces and Anuradhapura and Mannar districts. There may be temporary localized strong winds during thundershowers. General public is kindly requested to take adequate precautions to minimize damages caused by lightning activity. Issued 9 Oct, 11:00 · Valid until 10 Oct, 01:00.
- Forecast issued 9 Oct, 14:00
- Showers or thundershowers will occur in the most part of the island after 1.00 p.m.
- Covers Ratnapura on this road: 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.
- Covers Ratnapura on this road: 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 Kalawana (the wettest 5% of days there; several times the usual chance). (10 Oct, 05:30 to 11 Oct, 05:30)
- Next 3 days: a chance of a wet day of the kind that comes about 1–2 days a month in Kalawana (the wettest 5% of days there; several times the usual chance). (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)
×- Amber · Advisory for Severe Lightning. For Western, Sabaragamuwa, Central, Uva, North-western, Southern provinces and Anuradhapura, Mannar districts.. Thundershowers accompanied with severe lightning are likely to occur at several places in Western, Sabaragamuwa, Central, Uva, North-western and Southern provinces and Anuradhapura and Mannar districts. There may be temporary localized strong winds during thundershowers. General public is kindly requested to take adequate precautions to minimize damages caused by lightning activity. Issued 9 Oct, 11:00 · Valid until 10 Oct, 01:00.
- Forecast issued 9 Oct, 14:00
- Showers or thundershowers will occur in the most part of the island after 1.00 p.m.
- Covers Ratnapura on this road: 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.
- Covers Ratnapura on this road: 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
- Koswatt Ganga (Kalu Ganga basin) · about 19 km inside
- Delgoda Ganga (Kalu Ganga basin) · about 15 km inside
- Rambuke Ganga (Kalu Ganga basin) · about 12 km inside
- Edahdu Ela (Kalu Ganga basin) · about 11 km inside
- Kakulu Ganga (Kalu Ganga basin) · about 10 km inside
- Maha Ganga (Kalu Ganga basin) · about 7 km inside
- Aranuwa Dola (Gin Ganga basin) · about 6 km inside
- Heen Dola (Kalu Ganga basin) · about 4 km inside
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.
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.