Mahaweli flood watch

Station	Level	Alert		Next level, 24h
	4.63 m ▲	3.5	Minor floodMinor	10.4% Major · n=431
4.63m 05:11 SLST · hourly feed ▲ 0.01 m/h · +0.61 in 24h 1.13 m above Alert · higher than 95.2% of its history Alert 3.5Minor 4Major 5 20 Sep 06:30 → 25 Sep 05:11 SLST · shaded: usually, this time of year 2.59–4.84 m, median 4.17 (n=304) 97.7%Alert69.8%Minor10.4%Major chance of reaching each level within 24h · from 431 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 3.64 m on 26 Nov 2025, 09:30 SLST — 1.0× Alert. Today's 4.63 is 127% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	6.58 m ▼	5	Minor floodMinor	6.3% Major · n=270
6.58m 05:09 SLST · hourly feed ▼ 0.01 m/h · +0.84 in 24h 1.58 m above Alert · higher than 93.4% of its history Alert 5Minor 6Major 7.5 20 Sep 06:09 → 25 Sep 05:09 SLST · shaded: usually, this time of year 3.79–6.84 m, median 5.85 (n=305) 96.7%Alert52.6%Minor6.3%Major chance of reaching each level within 24h · from 270 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 5.60 m on 27 Nov 2025, 06:30 SLST — 1.1× Alert. Today's 6.58 is 118% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	1.82 m	1.4	Minor floodMinor	4.8% Major · n=545
1.82m 05:16 SLST · hourly feed → steady · +0.42 in 24h 0.42 m above Alert · higher than 82.5% of its history Alert 1.4Minor 1.7Major 2.8 20 Sep 06:06 → 25 Sep 05:16 SLST · shaded: usually, this time of year 0.48–2.68 m, median 1.74 (n=197) 98.9%Alert62.9%Minor4.8%Major chance of reaching each level within 24h · from 545 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 1.70 m on 27 Nov 2025, 12:30 SLST — 1.2× Alert. Today's 1.82 is 107% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 57 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	6.45 m ▲	5.2	Alert	15.6% Minor · n=346
6.45m 05:07 SLST · hourly feed ▲ 0.02 m/h · +1.65 in 24h 1.25 m above Alert · higher than 93.9% of its history Alert 5.2Minor 7.5Major 9.5 20 Sep 06:07 → 25 Sep 05:07 SLST · shaded: usually, this time of year 1.43–6.05 m, median 3.62 (n=294) 86.1%Alert15.6%Minor1.4%Major chance of reaching each level within 24h · from 346 past readings in this state (level only) For reference: Cyclone Ditwah, Nov 2025 Peak 10.12 m on 28 Nov 2025, 21:30 SLST — 1.9× Alert, 1.1× Major. Today's 6.45 is 64% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 56 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	4.94 m ▼	4	Alert	5.5% Minor · n=91
4.94m 05:08 SLST · hourly feed ▼ 0.02 m/h · +0.62 in 24h 0.94 m above Alert · higher than 88.4% of its history Alert 4Minor 6Major 7.5 20 Sep 06:02 → 25 Sep 05:08 SLST · shaded: usually, this time of year 2.33–5.25 m, median 3.99 (n=196) 95.6%Alert5.5%Minor<3%Major chance of reaching each level within 24h · from 91 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 5.46 m on 28 Nov 2025, 21:30 SLST — 1.4× Alert. Today's 4.94 is 90% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	1.82 m ▲	1.5	Alert	10.9% Minor · n=119
1.82m 05:10 SLST · hourly feed ▲ 0.06 m/h · +0.56 in 24h 0.32 m above Alert · higher than 98.2% of its history Alert 1.5Minor 3Major 4.5 20 Sep 06:05 → 25 Sep 05:10 SLST · shaded: usually, this time of year 0.65–1.20 m, median 0.91 (n=262) 76.5%Alert10.9%Minor4.2%Major chance of reaching each level within 24h · from 119 past readings in this state (level only) For reference: Cyclone Ditwah, Nov 2025 Peak 3.60 m on 28 Nov 2025, 03:30 SLST — 2.4× Alert. Today's 1.82 is 51% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 51 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	4.25 m ▼	4	Alert	18.1% Minor · n=138
4.25m 05:07 SLST · hourly feed ▼ 0.03 m/h · -0.64 in 24h 0.25 m above Alert · higher than 94.8% of its history Alert 4Minor 6Major 7.5 20 Sep 06:01 → 25 Sep 05:07 SLST · shaded: usually, this time of year 1.95–4.29 m, median 2.79 (n=294) 74.6%Alert18.1%Minor5.8%Major chance of reaching each level within 24h · from 138 past readings in this state (level only) For reference: Cyclone Ditwah, Nov 2025 Peak 4.12 m on 28 Nov 2025, 12:30 SLST — 1.0× Alert. Today's 4.25 is 103% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.

Station

Level

Alert

Next level, 24h

4.63 m ▲

3.5

Minor floodMinor

10.4% Major · n=431

6.58 m ▼

Minor floodMinor

6.3% Major · n=270

1.82 m

1.4

Minor floodMinor

4.8% Major · n=545

6.45 m ▲

5.2

Alert

15.6% Minor · n=346

4.94 m ▼

Alert

5.5% Minor · n=91

1.82 m ▲

1.5

Alert

10.9% Minor · n=119

4.25 m ▼

Alert

18.1% Minor · n=138

Station	Level	Alert		Next level, 24h
	2.97 m ▲	3	Normal	33.3% Alert · n=33
2.97m 05:05 SLST · hourly feed ▲ 0.08 m/h · Alert in ~0h at this rate · +0.20 in 24h 0.03 m below Alert · higher than 97.9% of its history Alert 3Minor 4Major 6 20 Sep 05:52 → 25 Sep 05:05 SLST · shaded: usually, this time of year 1.66–2.20 m, median 1.86 (n=254) 33.3%Alert6.1%Minor3%Major chance of reaching each level within 24h · from 33 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 6.48 m on 28 Nov 2025, 12:30 SLST — 2.2× Alert, 1.1× Major. Today's 2.97 is 46% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	14.61 m ▼	15	Normal	4.7% Alert · n=277
14.61m 05:07 SLST · hourly feed ▼ 68.30 m/h · +1.82 in 24h 0.39 m below Alert · higher than 92.3% of its history Alert 15Minor 15.5Major 19 20 Sep 06:03 → 25 Sep 05:07 SLST · shaded: usually, this time of year 10.06–13.50 m, median 11.75 (n=262) 4.7%Alert1.4%Minor<1%Major chance of reaching each level within 24h · from 277 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 21.90 m on 29 Nov 2025, 00:30 SLST — 1.5× Alert, 1.2× Major. Today's 14.61 is 67% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	6.31 m ▲	6.5	Normal	10.2% Alert · n=49
6.31m 05:03 SLST · hourly feed ▲ 0.04 m/h · Alert in ~5h at this rate · +1.63 in 24h 0.19 m below Alert · higher than 87.8% of its history Alert 6.5Minor 7.5Major 9.5 20 Sep 06:03 → 25 Sep 05:03 SLST · shaded: usually, this time of year 1.87–5.88 m, median 4.42 (n=262) 10.2%Alert2%Minor<6%Major chance of reaching each level within 24h · from 49 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 10.95 m on 30 Nov 2025, 00:30 SLST — 1.6× Alert, 1.1× Major. Today's 6.31 is 58% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	3.18 m ▼	3.3	Normal	43.2% Alert · n=37
3.18m 05:02 SLST · hourly feed ▼ 0.05 m/h · +0.70 in 24h 0.12 m below Alert · higher than 62.2% of its history Alert 3.3Minor 4.4Major 5.5 20 Sep 06:30 → 25 Sep 05:02 SLST · shaded: usually, this time of year 1.45–4.57 m, median 3.34 (n=270) 43.2%Alert13.5%Minor<8%Major chance of reaching each level within 24h · from 37 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 7.04 m on 29 Nov 2025, 06:30 SLST — 2.1× Alert, 1.3× Major. Today's 3.18 is 45% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	2.72 m ▲	3	Normal	6.5% Alert · n=231
2.72m 05:04 SLST · hourly feed ▲ 0.02 m/h · Alert in ~18h at this rate · +0.08 in 24h 0.28 m below Alert · higher than 70.2% of its history Alert 3Minor 4Major 5 20 Sep 06:03 → 25 Sep 05:04 SLST · shaded: usually, this time of year 1.05–3.74 m, median 2.83 (n=304) 6.5%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 231 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 4.29 m on 1 Dec 2025, 00:30 SLST — 1.4× Alert. Today's 2.72 is 63% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	8.60 m ▲	10	Normal	23.1% Alert · n=182
8.60m 05:05 SLST · hourly feed ▲ 0.03 m/h · +0.81 in 24h 1.40 m below Alert · higher than 74.2% of its history Alert 10Minor 10.7Major 12.2 20 Sep 06:04 → 25 Sep 05:05 SLST · shaded: usually, this time of year 5.67–9.64 m, median 7.97 (n=302) 23.1%Alert2.2%Minor0.5%Major chance of reaching each level within 24h · from 182 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 12.01 m on 29 Nov 2025, 21:30 SLST — 1.2× Alert. Today's 8.60 is 72% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 40 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	3.30 ft ▼	4	Normal	35.8% Alert · n=81
3.30ft 05:07 SLST · hourly feed ▼ 0.31 ft/h · +1.00 in 24h 0.70 ft below Alert · higher than 83.1% of its history Alert 4Minor 5Major 7 20 Sep 06:30 → 25 Sep 05:07 SLST · shaded: usually, this time of year 1.10–3.50 ft, median 2.55 (n=253) 35.8%Alert2.5%Minor<4%Major chance of reaching each level within 24h · from 81 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 8.50 ft on 1 Dec 2025, 12:30 SLST — 2.1× Alert, 1.2× Major. Today's 3.30 is 39% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	3.35 m	5	Normal	1.1% Alert · n=185
3.35m 05:06 SLST · hourly feed → steady · +0.76 in 24h 1.65 m below Alert · higher than 67.5% of its history Alert 5Minor 6.2Major 9.6 20 Sep 06:07 → 25 Sep 05:06 SLST · shaded: usually, this time of year 1.74–3.55 m, median 2.92 (n=225) 1.1%Alert<2%Minor<2%Major chance of reaching each level within 24h · from 185 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 13.46 m on 29 Nov 2025, 09:30 SLST — 2.7× Alert, 1.4× Major. Today's 3.35 is 25% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 52 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	1.60 m ▲	2.5	Normal	10.1% Alert · n=138
1.60m 05:06 SLST · hourly feed ▲ 0.07 m/h · Alert in ~13h at this rate · -1.54 in 24h 0.90 m below Alert · higher than 91.3% of its history Alert 2.5Minor 4Major 6 20 Sep 06:04 → 25 Sep 05:06 SLST · shaded: usually, this time of year 0.23–1.84 m, median 1.10 (n=302) 10.1%Alert4.3%Minor<2%Major chance of reaching each level within 24h · from 138 past readings in this state (level only) For reference: Cyclone Ditwah, Nov 2025 Peak 2.97 m on 26 Nov 2025, 21:30 SLST — 1.2× Alert. Today's 1.60 is 54% of it. 26 Nov 03:30 → 3 Dec 21:30 SLST 57 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	2.55 m ▼	4	Normal	4.9% Alert · n=81
2.55m 05:06 SLST · hourly feed ▼ 0.08 m/h · -1.55 in 24h 1.45 m below Alert · higher than 90.8% of its history Alert 4Minor 5Major 6.5 20 Sep 06:07 → 25 Sep 05:06 SLST · shaded: usually, this time of year 0.74–3.09 m, median 1.93 (n=304) 4.9%Alert3.7%Minor<4%Major chance of reaching each level within 24h · from 81 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 2.77 m on 27 Nov 2025, 00:30 SLST — 0.7× Alert. Today's 2.55 is 92% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	1.63 m ▲	3	Normal	4.5% Alert · n=89
1.63m 05:06 SLST · hourly feed ▲ 0.03 m/h · Alert in ~42h at this rate · +0.15 in 24h 1.37 m below Alert · higher than 83.5% of its history Alert 3Minor 4Major 6 20 Sep 06:07 → 25 Sep 05:06 SLST · shaded: usually, this time of year 0.47–1.73 m, median 1.05 (n=262) 4.5%Alert3.4%Minor1.1%Major chance of reaching each level within 24h · from 89 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 7.27 m on 28 Nov 2025, 06:30 SLST — 2.4× Alert, 1.5× Major. Today's 1.63 is 22% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 52 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	2.20 m ▼	4.8	Normal	5% Alert · n=100
2.20m 05:05 SLST · hourly feed ▼ 0.02 m/h · +0.43 in 24h 2.60 m below Alert · higher than 90.2% of its history Alert 4.8Minor 5.8Major 7 20 Sep 06:06 → 25 Sep 05:05 SLST · shaded: usually, this time of year 0.81–2.32 m, median 1.44 (n=261) 5%Alert3%Minor2%Major chance of reaching each level within 24h · from 100 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 8.55 m on 28 Nov 2025, 12:30 SLST — 1.8× Alert, 1.3× Major. Today's 2.20 is 26% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	2.40 m ▼	5.5	Normal	<4% Alert · n=68
2.40m 05:04 SLST · hourly feed ▼ 0.03 m/h · +0.94 in 24h 3.10 m below Alert · higher than 72.9% of its history Alert 5.5Minor 6.5Major 7.5 20 Sep 06:03 → 25 Sep 05:04 SLST · shaded: usually, this time of year 0.88–2.47 m, median 1.74 (n=219) <4%Alert<4%Minor<4%Major chance of reaching each level within 24h · from 68 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 12.54 m on 29 Nov 2025, 06:30 SLST — 2.3× Alert, 1.7× Major. Today's 2.40 is 19% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 51 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	1.27 m ▼	3	Normal	1.1% Alert · n=93
1.27m 05:06 SLST · hourly feed ▼ 0.03 m/h · +0.36 in 24h 1.73 m below Alert · higher than 74.1% of its history Alert 3Minor 5Major 7 20 Sep 06:01 → 25 Sep 05:06 SLST · shaded: usually, this time of year 0.55–1.10 m, median 0.75 (n=103) 1.1%Alert<3%Minor<3%Major chance of reaching each level within 24h · from 93 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 4.78 m on 28 Nov 2025, 12:30 SLST — 1.6× Alert. Today's 1.27 is 27% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	1.12 m	4	Normal	0.2% Alert · n=577
1.12m 05:05 SLST · hourly feed → steady · +0.01 in 24h 2.88 m below Alert · higher than 64.8% of its history Alert 4Minor 5Major 5.5 20 Sep 06:01 → 25 Sep 05:05 SLST · shaded: usually, this time of year -0.19–1.13 m, median 0.63 (n=123) 0.2%Alert0.2%Minor<1%Major chance of reaching each level within 24h · from 577 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 5.52 m on 27 Nov 2025, 12:30 SLST — 1.4× Alert, 1.0× Major. Today's 1.12 is 20% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	1.64 m	6	Normal	<1% Alert · n=534
1.64m 05:44 SLST · hourly feed → steady · -0.02 in 24h 4.36 m below Alert · higher than 43.7% of its history Alert 6Minor 7.5Major 10.5 20 Sep 06:07 → 25 Sep 05:44 SLST · shaded: usually, this time of year 1.22–1.82 m, median 1.61 (n=124) <1%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 534 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 8.39 m on 28 Nov 2025, 12:30 SLST — 1.4× Alert. Today's 1.64 is 20% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 55 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	1.00 m	4.4	Normal	<0% Alert · n=681
1.00m 05:01 SLST · hourly feed → steady · +0.06 in 24h 3.40 m below Alert · higher than 61.7% of its history Alert 4.4Minor 5.4Major 5.9 20 Sep 06:02 → 25 Sep 05:01 SLST · shaded: usually, this time of year 0.42–1.06 m, median 0.71 (n=133) <0%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 681 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 3.18 m on 27 Nov 2025, 09:30 SLST — 0.7× Alert. Today's 1.00 is 31% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	1.02 m ▲	6.9	Normal	<0% Alert · n=706
1.02m 05:01 SLST · hourly feed ▲ 0.01 m/h · +0.01 in 24h 5.88 m below Alert · higher than 12% of its history Alert 6.9Minor 8.4Major 8.8 20 Sep 06:01 → 25 Sep 05:01 SLST · shaded: usually, this time of year 0.93–1.35 m, median 1.04 (n=133) <0%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 706 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 5.55 m on 27 Nov 2025, 09:30 SLST — 0.8× Alert. Today's 1.02 is 18% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	0.54 m	5	Normal	0.2% Alert · n=660
0.54m 05:00 SLST · hourly feed → steady · +0.00 in 24h 4.46 m below Alert · higher than 3.7% of its history Alert 5Minor 6Major 7.5 20 Sep 06:03 → 25 Sep 05:00 SLST · shaded: usually, this time of year 0.53–0.82 m, median 0.58 (n=133) 0.2%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 660 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 8.25 m on 27 Nov 2025, 06:30 SLST — 1.6× Alert, 1.1× Major. Today's 0.54 is 7% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	0.41 m	4	Normal	0.5% Alert · n=645
0.41m 05:01 SLST · hourly feed → steady · +0.00 in 24h 3.59 m below Alert · higher than 14.8% of its history Alert 4Minor 5Major 6 20 Sep 06:01 → 25 Sep 05:01 SLST · shaded: usually, this time of year 0.36–0.41 m, median 0.40 (n=105) 0.5%Alert0.5%Minor<0%Major chance of reaching each level within 24h · from 645 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 5.74 m on 27 Nov 2025, 18:30 SLST — 1.4× Alert. Today's 0.41 is 7% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 44 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	0.41 m	4.75	Normal	2.4% Alert · n=338
0.41m 05:00 SLST · hourly feed → steady · +0.02 in 24h 4.34 m below Alert · higher than 25% of its history Alert 4.75Minor 6Major 7 20 Sep 06:03 → 25 Sep 05:00 SLST · shaded: usually, this time of year -0.25–0.39 m, median -0.15 (n=64) 2.4%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 338 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 8.33 m on 28 Nov 2025, 06:30 SLST — 1.8× Alert, 1.2× Major. Today's 0.41 is 5% of it. 26 Nov 00:30 → 28 Nov 06:30 SLST 14 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood. The gauge then reported nothing for 46 consecutive reports — so this peak is the last reading before it went silent, not necessarily the crest.
	0.11 m ▼	3	Normal	4.8% Alert · n=63
0.11m 05:05 SLST · hourly feed ▼ 0.10 m/h · -0.05 in 24h 2.89 m below Alert · higher than 3.3% of its history Alert 3Minor 4Major 5 20 Sep 06:01 → 25 Sep 05:05 SLST · shaded: usually, this time of year 0.13–0.52 m, median 0.26 (n=125) 4.8%Alert<5%Minor<5%Major chance of reaching each level within 24h · from 63 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 4.20 m on 27 Nov 2025, 06:30 SLST — 1.4× Alert. Today's 0.11 is 3% of it. 26 Nov 00:30 → 3 Dec 18:30 SLST 15 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood. The gauge then reported nothing for 1 consecutive reports — so this peak is the last reading before it went silent, not necessarily the crest.
	0.14 m ▼	4.5	Normal	<0% Alert · n=670
0.14m 05:04 SLST · hourly feed ▼ 0.01 m/h · +0.00 in 24h 4.36 m below Alert · higher than 2.9% of its history Alert 4.5Minor 6Major 7 20 Sep 06:03 → 25 Sep 05:04 SLST · shaded: usually, this time of year 0.13–0.37 m, median 0.15 (n=133) <0%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 670 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 5.86 m on 26 Nov 2025, 21:30 SLST — 1.3× Alert. Today's 0.14 is 2% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 56 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	0.03 m	4	Normal	6.9% Alert · n=58
0.03m 05:04 SLST · hourly feed → steady · -0.05 in 24h 3.97 m below Alert · higher than 2.3% of its history Alert 4Minor 4.5Major 6 20 Sep 06:05 → 25 Sep 05:04 SLST · shaded: usually, this time of year 0.05–0.26 m, median 0.10 (n=125) 6.9%Alert6.9%Minor3.4%Major chance of reaching each level within 24h · from 58 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 6.65 m on 27 Nov 2025, 18:30 SLST — 1.7× Alert, 1.1× Major. Today's 0.03 is 0% of it. 26 Nov 00:30 → 3 Dec 18:30 SLST 29 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood. The gauge then reported nothing for 1 consecutive reports — so this peak is the last reading before it went silent, not necessarily the crest.
	-0.24 m ▲	4	Normal	—
-0.24m 05:02 SLST · hourly feed ▲ 0.01 m/h · +0.01 in 24h 4.24 m below Alert · higher than 17.4% of its history Alert 4Minor 4.6Major 6.5 20 Sep 06:02 → 25 Sep 05:02 SLST · shaded: usually, this time of year -0.33–-0.23 m, median -0.27 (n=102) No base rate — this state has only 0 matching readings in 8.3 years (need 30) For reference: Cyclone Ditwah, Nov 2025 Peak 7.60 m on 28 Nov 2025, 15:30 SLST — 1.9× Alert, 1.2× Major. Today's -0.24 is -3% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 58 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	-0.36 m ▼	3	Normal	—
-0.36m 05:03 SLST · hourly feed ▼ 0.02 m/h · -0.13 in 24h 3.36 m below Alert · higher than 16.1% of its history Alert 3Minor 4.3Major 6 20 Sep 06:01 → 25 Sep 05:03 SLST · shaded: usually, this time of year -1.40–-0.03 m, median -0.26 (n=133) No base rate — this state has only 0 matching readings in 8.3 years (need 30) For reference: Cyclone Ditwah, Nov 2025 Peak 5.50 m on 27 Nov 2025, 18:30 SLST — 1.8× Alert. Today's -0.36 is -7% of it. 26 Nov 00:30 → 2 Dec 12:30 SLST 15 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood. The gauge then reported nothing for 12 consecutive reports — so this peak is the last reading before it went silent, not necessarily the crest.

Peradeniya

Nawalapitiya

Closest to their thresholds