Mahaweli flood watch

Station	Level	Alert		Next level, 24h
	1.97 m	1.4	Minor floodMinor	4.7% Major · n=558
1.97m 04:09 SLST · hourly feed → steady · +0.01 in 24h 0.57 m above Alert · higher than 88.6% of its history Alert 1.4Minor 1.7Major 2.8 22 Sep 04:34 → 27 Sep 04:09 SLST · shaded: usually, this time of year 0.65–2.68 m, median 1.90 (n=219) 98.9%Alert63.8%Minor4.7%Major chance of reaching each level within 24h · from 558 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 1.97 is 116% 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.
	4.77 m	3.5	Minor floodMinor	10.1% Major · n=445
4.77m 03:05 SLST · hourly feed → steady · -0.02 in 24h 1.27 m above Alert · higher than 96.5% of its history Alert 3.5Minor 4Major 5 22 Sep 05:13 → 27 Sep 03:05 SLST · shaded: usually, this time of year 2.65–4.83 m, median 4.18 (n=330) 97.8%Alert70.8%Minor10.1%Major chance of reaching each level within 24h · from 445 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 4.77 is 131% 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.
	5.61 m ▼	5	Alert	36.3% Minor · n=344
5.61m 04:06 SLST · hourly feed ▼ 0.03 m/h · -0.53 in 24h 0.61 m above Alert · higher than 76% of its history Alert 5Minor 6Major 7.5 22 Sep 05:08 → 27 Sep 04:06 SLST · shaded: usually, this time of year 3.86–6.84 m, median 5.95 (n=331) 91.9%Alert36.3%Minor2.3%Major chance of reaching each level within 24h · from 344 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 5.61 is 100% 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.
	2.88 m	3	Normal	6.1% Alert · n=245
2.88m 03:11 SLST · hourly feed → steady · +0.03 in 24h 0.12 m below Alert · higher than 74.6% of its history Alert 3Minor 4Major 5 22 Sep 05:04 → 27 Sep 03:11 SLST · shaded: usually, this time of year 1.18–3.66 m, median 2.83 (n=330) 6.1%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 245 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 2.88 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.
	8.72 m ▼	10	Normal	<2% Alert · n=185
8.72m 04:01 SLST · hourly feed ▼ 0.03 m/h · -0.26 in 24h 1.28 m below Alert · higher than 77.6% of its history Alert 10Minor 10.7Major 12.2 22 Sep 05:06 → 27 Sep 04:01 SLST · shaded: usually, this time of year 5.78–9.54 m, median 8.13 (n=328) <2%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 12.01 m on 29 Nov 2025, 21:30 SLST — 1.2× Alert. Today's 8.72 is 73% 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.

Station

Level

Alert

Next level, 24h

1.97 m

1.4

Minor floodMinor

4.7% Major · n=558

4.77 m

3.5

Minor floodMinor

10.1% Major · n=445

5.61 m ▼

Alert

36.3% Minor · n=344

2.88 m

Normal

6.1% Alert · n=245

8.72 m ▼

Normal

<2% Alert · n=185

Station	Level	Alert		Next level, 24h
	2.50 m ▼	3	Normal	30.1% Alert · n=123
2.50m 04:04 SLST · hourly feed ▼ 0.05 m/h · -0.48 in 24h 0.50 m below Alert · higher than 93.6% of its history Alert 3Minor 4Major 6 22 Sep 05:03 → 27 Sep 04:04 SLST · shaded: usually, this time of year 1.67–2.55 m, median 1.87 (n=280) 30.1%Alert2.4%Minor1.6%Major chance of reaching each level within 24h · from 123 past readings in this state (level only) 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 2.50 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.
	12.45 m	15	Normal	9.5% Alert · n=42
12.45m 04:00 SLST · hourly feed → steady · -1.29 in 24h 2.55 m below Alert · higher than 75.4% of its history Alert 15Minor 15.5Major 19 22 Sep 05:04 → 27 Sep 04:00 SLST · shaded: usually, this time of year 10.17–13.80 m, median 11.77 (n=288) 9.5%Alert2.4%Minor<7%Major chance of reaching each level within 24h · from 42 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 12.45 is 57% 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.
	3.31 m ▼	4	Normal	21.3% Alert · n=141
3.31m 03:16 SLST · hourly feed ▼ 0.02 m/h · -1.37 in 24h 0.69 m below Alert · higher than 59.8% of its history Alert 4Minor 6Major 7.5 22 Sep 05:00 → 27 Sep 03:16 SLST · shaded: usually, this time of year 2.38–5.28 m, median 4.10 (n=218) 21.3%Alert0.7%Minor<2%Major chance of reaching each level within 24h · from 141 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 3.31 is 61% 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.
	4.20 m ▼	5.2	Normal	9.8% Alert · n=183
4.20m 03:14 SLST · hourly feed ▼ 0.07 m/h · -1.28 in 24h 1.00 m below Alert · higher than 69.9% of its history Alert 5.2Minor 7.5Major 9.5 22 Sep 05:12 → 27 Sep 03:14 SLST · shaded: usually, this time of year 1.50–6.17 m, median 3.89 (n=320) 9.8%Alert<2%Minor<2%Major chance of reaching each level within 24h · from 183 past readings in this state (level + trend) 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 4.20 is 42% 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.
	3.10 ft ▼	4	Normal	10.2% Alert · n=88
3.10ft 04:04 SLST · hourly feed ▼ 0.25 ft/h · -0.40 in 24h 0.90 ft below Alert · higher than 79.5% of its history Alert 4Minor 5Major 7 22 Sep 05:02 → 27 Sep 04:04 SLST · shaded: usually, this time of year 1.30–3.60 ft, median 2.70 (n=279) 10.2%Alert3.4%Minor<3%Major chance of reaching each level within 24h · from 88 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 3.10 is 36% 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.
	4.77 m ▼	6.5	Normal	1% Alert · n=191
4.77m 04:06 SLST · hourly feed ▼ 0.07 m/h · -1.03 in 24h 1.73 m below Alert · higher than 69.5% of its history Alert 6.5Minor 7.5Major 9.5 22 Sep 05:02 → 27 Sep 04:06 SLST · shaded: usually, this time of year 1.90–5.97 m, median 4.47 (n=288) 1%Alert<2%Minor<2%Major chance of reaching each level within 24h · from 191 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 4.77 is 44% 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 ▼	3.3	Normal	10.1% Alert · n=99
2.40m 04:03 SLST · hourly feed ▼ 0.03 m/h · -0.22 in 24h 0.90 m below Alert · higher than 48.6% of its history Alert 3.3Minor 4.4Major 5.5 22 Sep 05:04 → 27 Sep 04:03 SLST · shaded: usually, this time of year 1.64–4.63 m, median 3.28 (n=296) 10.1%Alert2%Minor<3%Major chance of reaching each level within 24h · from 99 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 2.40 is 34% 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.
	2.88 m ▼	4	Normal	6% Alert · n=116
2.88m 04:03 SLST · hourly feed ▼ 0.01 m/h · -0.30 in 24h 1.12 m below Alert · higher than 78.8% of its history Alert 4Minor 6Major 7.5 22 Sep 05:00 → 27 Sep 04:03 SLST · shaded: usually, this time of year 1.95–4.28 m, median 2.84 (n=320) 6%Alert1.7%Minor<3%Major chance of reaching each level within 24h · from 116 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 4.12 m on 28 Nov 2025, 12:30 SLST — 1.0× Alert. Today's 2.88 is 70% 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.
	1.03 m ▼	1.5	Normal	4.7% Alert · n=430
1.03m 04:02 SLST · hourly feed ▼ 0.01 m/h · -0.21 in 24h 0.47 m below Alert · higher than 68.5% of its history Alert 1.5Minor 3Major 4.5 22 Sep 05:09 → 27 Sep 04:02 SLST · shaded: usually, this time of year 0.66–1.28 m, median 0.93 (n=288) 4.7%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 430 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 3.60 m on 28 Nov 2025, 03:30 SLST — 2.4× Alert. Today's 1.03 is 29% 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.
	2.79 m ▼	5	Normal	1.2% Alert · n=747
2.79m 04:02 SLST · hourly feed ▼ 0.01 m/h · -0.25 in 24h 2.21 m below Alert · higher than 47.3% of its history Alert 5Minor 6.2Major 9.6 22 Sep 05:05 → 27 Sep 04:02 SLST · shaded: usually, this time of year 1.74–3.57 m, median 2.97 (n=248) 1.2%Alert0.1%Minor<0%Major chance of reaching each level within 24h · from 747 past readings in this state (level only) 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 2.79 is 21% 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.
	1.56 m ▼	4	Normal	1.4% Alert · n=556
1.56m 04:03 SLST · hourly feed ▼ 0.05 m/h · -0.70 in 24h 2.44 m below Alert · higher than 60.9% of its history Alert 4Minor 5Major 6.5 22 Sep 05:10 → 27 Sep 04:03 SLST · shaded: usually, this time of year 0.75–3.05 m, median 1.98 (n=329) 1.4%Alert0.9%Minor0.7%Major chance of reaching each level within 24h · from 556 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 1.56 is 56% 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.
	0.93 m ▼	2.5	Normal	3.2% Alert · n=689
0.93m 04:07 SLST · hourly feed ▼ 0.01 m/h · -0.04 in 24h 1.57 m below Alert · higher than 64.4% of its history Alert 2.5Minor 4Major 6 22 Sep 05:04 → 27 Sep 04:07 SLST · shaded: usually, this time of year 0.23–1.82 m, median 1.11 (n=328) 3.2%Alert0.4%Minor<0%Major chance of reaching each level within 24h · from 689 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 2.97 m on 26 Nov 2025, 21:30 SLST — 1.2× Alert. Today's 0.93 is 31% 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.
	1.00 m ▼	3	Normal	0.5% Alert · n=551
1.00m 04:06 SLST · hourly feed ▼ 0.02 m/h · -0.18 in 24h 2.00 m below Alert · higher than 54.7% of its history Alert 3Minor 4Major 6 22 Sep 05:14 → 27 Sep 04:06 SLST · shaded: usually, this time of year 0.50–1.76 m, median 1.07 (n=288) 0.5%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 551 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 1.00 is 14% 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.
	1.52 m ▼	4.8	Normal	0.9% Alert · n=439
1.52m 04:08 SLST · hourly feed ▼ 0.05 m/h · -0.34 in 24h 3.28 m below Alert · higher than 73.9% of its history Alert 4.8Minor 5.8Major 7 22 Sep 04:36 → 27 Sep 04:08 SLST · shaded: usually, this time of year 0.84–2.38 m, median 1.48 (n=287) 0.9%Alert0.2%Minor<1%Major chance of reaching each level within 24h · from 439 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 1.52 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.
	0.95 m	3	Normal	0.2% Alert · n=520
0.95m 03:00 SLST · hourly feed → steady · -0.21 in 24h 2.05 m below Alert · higher than 40.8% of its history Alert 3Minor 5Major 7 22 Sep 05:03 → 27 Sep 03:00 SLST · shaded: usually, this time of year 0.55–1.20 m, median 0.81 (n=119) 0.2%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 520 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 0.95 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.
	1.14 m	4	Normal	0.2% Alert · n=591
1.14m 04:01 SLST · hourly feed → steady · -0.01 in 24h 2.86 m below Alert · higher than 65.9% of its history Alert 4Minor 5Major 5.5 22 Sep 05:01 → 27 Sep 04:01 SLST · shaded: usually, this time of year -0.18–1.15 m, median 1.06 (n=140) 0.2%Alert0.2%Minor<1%Major chance of reaching each level within 24h · from 591 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 1.14 is 21% 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.
	1.54 m ▼	5.5	Normal	0.2% Alert · n=473
1.54m 03:04 SLST · hourly feed ▼ 0.01 m/h · -0.29 in 24h 3.96 m below Alert · higher than 45.2% of its history Alert 5.5Minor 6.5Major 7.5 22 Sep 05:03 → 27 Sep 03:04 SLST · shaded: usually, this time of year 0.95–2.47 m, median 1.78 (n=242) 0.2%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 473 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 1.54 is 12% 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.
	1.64 m	6	Normal	<1% Alert · n=548
1.64m 04:15 SLST · hourly feed → steady · +0.00 in 24h 4.36 m below Alert · higher than 44.1% of its history Alert 6Minor 7.5Major 10.5 22 Sep 05:02 → 27 Sep 04:15 SLST · shaded: usually, this time of year 1.23–1.82 m, median 1.63 (n=141) <1%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 548 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.
	1.10 m ▲	4.4	Normal	<0% Alert · n=694
1.10m 04:01 SLST · hourly feed ▲ 0.01 m/h · +0.05 in 24h 3.30 m below Alert · higher than 72.9% of its history Alert 4.4Minor 5.4Major 5.9 22 Sep 05:00 → 27 Sep 04:01 SLST · shaded: usually, this time of year 0.43–1.13 m, median 0.84 (n=150) <0%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 694 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 1.10 is 35% 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.
	0.98 m	6.9	Normal	<0% Alert · n=720
0.98m 04:02 SLST · hourly feed → steady · -0.01 in 24h 5.92 m below Alert · higher than 10.3% of its history Alert 6.9Minor 8.4Major 8.8 22 Sep 05:01 → 27 Sep 04:02 SLST · shaded: usually, this time of year 0.94–1.43 m, median 1.04 (n=150) <0%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 720 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 0.98 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.
	0.52 m	5	Normal	0.1% Alert · n=674
0.52m 04:01 SLST · hourly feed → steady · -0.01 in 24h 4.48 m below Alert · higher than 2% of its history Alert 5Minor 6Major 7.5 22 Sep 05:00 → 27 Sep 04:01 SLST · shaded: usually, this time of year 0.53–0.90 m, median 0.57 (n=150) 0.1%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 674 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 0.52 is 6% 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.
	0.37 m	4.75	Normal	2.3% Alert · n=352
0.37m 04:02 SLST · hourly feed → steady · -0.01 in 24h 4.38 m below Alert · higher than 21.7% of its history Alert 4.75Minor 6Major 7 22 Sep 05:01 → 27 Sep 04:02 SLST · shaded: usually, this time of year -0.25–0.41 m, median 0.37 (n=81) 2.3%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 352 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 0.37 is 4% 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.
	0.13 m ▲	3	Normal	0.2% Alert · n=629
0.13m 04:00 SLST · hourly feed ▲ 0.01 m/h · -0.01 in 24h 2.87 m below Alert · higher than 5.4% of its history Alert 3Minor 4Major 5 22 Sep 05:01 → 27 Sep 04:00 SLST · shaded: usually, this time of year 0.13–0.53 m, median 0.25 (n=142) 0.2%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 629 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 0.13 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.
	0.13 m	4.5	Normal	<0% Alert · n=684
0.13m 04:01 SLST · hourly feed → steady · +0.00 in 24h 4.37 m below Alert · higher than 2.2% of its history Alert 4.5Minor 6Major 7 22 Sep 05:02 → 27 Sep 04:01 SLST · shaded: usually, this time of year 0.13–0.43 m, median 0.15 (n=150) <0%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 684 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 0.13 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.
	0.08 m ▼	3	Normal	<1% Alert · n=221
0.08m 03:00 SLST · hourly feed ▼ 0.02 m/h · +0.00 in 24h 2.92 m below Alert · higher than 40.9% of its history Alert 3Minor 4.3Major 6 22 Sep 05:01 → 27 Sep 03:00 SLST · shaded: usually, this time of year -1.39–0.07 m, median -0.24 (n=150) <1%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 221 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 5.50 m on 27 Nov 2025, 18:30 SLST — 1.8× Alert. Today's 0.08 is 1% 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.
	0.05 m	4	Normal	0.3% Alert · n=666
0.05m 03:01 SLST · hourly feed → steady · +0.02 in 24h 3.95 m below Alert · higher than 6.3% of its history Alert 4Minor 4.5Major 6 22 Sep 05:53 → 27 Sep 03:01 SLST · shaded: usually, this time of year 0.03–0.32 m, median 0.10 (n=142) 0.3%Alert0.3%Minor<0%Major chance of reaching each level within 24h · from 666 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 0.05 is 1% 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.
	-0.28 m	4	Normal	—
-0.28m 04:02 SLST · hourly feed → steady · -0.03 in 24h 4.28 m below Alert · higher than 6.4% of its history Alert 4Minor 4.6Major 6.5 22 Sep 05:03 → 27 Sep 04:02 SLST · shaded: usually, this time of year -0.33–-0.23 m, median -0.26 (n=118) 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 -0.28 is -4% 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.

Peradeniya

Nawalapitiya

Closest to their thresholds