Roads, rain and weather

Rain on this road

Last 3 days: Very rare here (a few days a year) · 6 reporting · most: Heavy

• Last 3 days: among the wettest 1% of 3-day periods since 2000 in Dehiovita.
• Last 24 hours: among the wettest 5% of 24-hour periods since 2000 in Dehiovita, Yatiyanthota, Ambagamuwa, Norwood.
• Last 7 days: among the wettest 5% of 7-day periods since 2000 in Dehiovita, Yatiyanthota, Ambagamuwa, Norwood.
• 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 10 Nov, 02:30.

Rain at gauges near this road · 6 reporting · most: Heavy

123456789101112131415161718192021

0142 km

DryLight rainModerate rainHeavy rainVery heavy rainNo rain report

	Gauge	On the road	Last 24 h
1	Katunayake	km 0–12	14.7 mm Moderate rainlast 3 h: 0 mm
2	Nagalagam Street	km 13–37	0 mm Drylast 3 h: 0 mm
3	Hanwella	km 37–53	28.6 mm Moderate rainlast 3 h: 0 mm
4	Salawa Estate	km 53–61	No rain report
5	Penrith Estate	km 61–67	126.5 mm Heavy rain
6	Elston	km 64–65	No rain report
7	Awissawella	km 67–70	No rain report
8	Thalduwa Estate	km 70–73	No rain report
9	Dehiowita	km 73–80	No rain report
10	Yatiyanthota (NBRI)	km 80–85	No rain report
11	Yatiyantota	km 85–92	No rain report
12	Pambegama Tea Factory	km 92–93	No rain report
13	Theligama (NBRI)	km 93–101	No rain report
14	Kitulgala (NBRI)	km 101–105	No rain report
15	Kithulgala	km 105–108	35.9 mm Moderate rainlast 3 h: 0 mm
16	Kalugala (NBRI)	km 108–116	No rain report
17	Ginigathhena (NBRI)	km 116–123	No rain report
18	Watawala (NBRI)	km 123–132	No rain report
19	Norton	km 132–133	14.2 mm Moderate rain
20	Dikoya	km 132–140	No rain report
21	Hatton (NBRI)	km 140–142	No rain report

• Gauges are near about 141 of the 142 km. Other stretches have no gauge near them, which says nothing about rain there.
• NBRI's warning stays in force after rain eases.
• Department of Meteorology, Irrigation Department and NBRI automatic gauge readings, passed on as published. Met gauge sites are approximate.

Weather forecast (Department of Meteorology)

• No Department of Meteorology advisory is in force for Gampaha, Colombo, Kegalle and Nuwara Eliya.
• Forecast issued 10 Nov, 05:30
• Showers or thundershowers will occur at times in the Northern province and in Trincomalee district.
• Showers or thundershowers will occur elsewhere in the island after 1.00 p.m.
• Covers Kegalle, Nuwara Eliya, Colombo and Gampaha on this road: Heavy falls above 100mm are likely at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle and Matara districts.
• Showers may occur in the coastal areas of the Southern Province during the morning.
• The general public is kindly requested to take adequate precautions to minimize damage caused by temporary localized strong winds and lightning during thundershowers.
• Covers Kegalle, Nuwara Eliya, Colombo and Gampaha on this road: Misty conditions can be expected at some places in Western, Sabaragamuwa, Central and Uva provinces and in Galle, Matara and Kurunegala districts 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 Yatiyanthota, Ambagamuwa, Norwood (the wettest 5% of days there; several times the usual chance). (10 Nov, 05:30 to 11 Nov, 05:30)
• Next 3 days: a chance of a wet day of the kind that comes about 1–2 days a month in Katana, Ambagamuwa, Norwood (the wettest 5% of days there; several times the usual chance). (10 Nov, 05:30 to 13 Nov, 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 Nov, 17:30, compared with each division's own satellite record.

None of these changes NBRI’s level.