Mahaweli flood watch

Station	Level	Alert		Next level, 24h
	1.90 m	1.4	Minor floodMinor	4.8% Major · n=547
1.90m 13:04 SLST · hourly feed → steady · +0.30 in 24h 0.50 m above Alert · higher than 85.5% of its history Alert 1.4Minor 1.7Major 2.8 20 Sep 14:05 → 25 Sep 13:04 SLST · shaded: usually, this time of year 0.48–2.68 m, median 1.76 (n=200) 98.9%Alert63.1%Minor4.8%Major chance of reaching each level within 24h · from 547 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 1.90 is 112% 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.
	4.70 m	3.5	Minor floodMinor	10.4% Major · n=434
4.70m 13:04 SLST · hourly feed → steady · +0.35 in 24h 1.20 m above Alert · higher than 96% of its history Alert 3.5Minor 4Major 5 20 Sep 14:04 → 25 Sep 13:04 SLST · shaded: usually, this time of year 2.59–4.84 m, median 4.18 (n=307) 97.7%Alert70%Minor10.4%Major chance of reaching each level within 24h · from 434 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 4.70 is 129% 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.
	6.47 m ▼	5	Minor floodMinor	6.2% Major · n=273
6.47m 13:14 SLST · hourly feed ▼ 0.01 m/h · -0.24 in 24h 1.47 m above Alert · higher than 92.1% of its history Alert 5Minor 6Major 7.5 20 Sep 14:04 → 25 Sep 13:14 SLST · shaded: usually, this time of year 3.79–6.84 m, median 5.85 (n=308) 96.7%Alert53.1%Minor6.2%Major chance of reaching each level within 24h · from 273 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 6.47 is 116% 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.
	4.81 m	4	Alert	5.5% Minor · n=91
4.81m 13:08 SLST · hourly feed → steady · -0.03 in 24h 0.81 m above Alert · higher than 86.9% of its history Alert 4Minor 6Major 7.5 20 Sep 14:05 → 25 Sep 13:08 SLST · shaded: usually, this time of year 2.33–5.25 m, median 4.04 (n=199) 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 4.81 is 88% 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.
	6.24 m ▼	5.2	Alert	10.2% Minor · n=197
6.24m 13:07 SLST · hourly feed ▼ 0.05 m/h · +0.23 in 24h 1.04 m above Alert · higher than 92.5% of its history Alert 5.2Minor 7.5Major 9.5 20 Sep 14:08 → 25 Sep 13:07 SLST · shaded: usually, this time of year 1.43–6.10 m, median 3.68 (n=297) 88.3%Alert10.2%Minor<2%Major chance of reaching each level within 24h · from 197 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 6.24 is 62% 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.
	4.09 m ▼	4	Alert	12.7% Minor · n=55
4.09m 13:10 SLST · hourly feed ▼ 0.28 m/h · -1.26 in 24h 0.09 m above Alert · higher than 93.9% of its history Alert 4Minor 6Major 7.5 20 Sep 14:01 → 25 Sep 13:10 SLST · shaded: usually, this time of year 1.95–4.30 m, median 2.79 (n=297) 63.6%Alert12.7%Minor<5%Major chance of reaching each level within 24h · from 55 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 4.09 is 99% 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

1.90 m

1.4

Minor floodMinor

4.8% Major · n=547

4.70 m

3.5

Minor floodMinor

10.4% Major · n=434

6.47 m ▼

Minor floodMinor

6.2% Major · n=273

4.81 m

Alert

5.5% Minor · n=91

6.24 m ▼

5.2

Alert

10.2% Minor · n=197

4.09 m ▼

Alert

12.7% Minor · n=55

Station	Level	Alert		Next level, 24h
	1.49 m ▼	1.5	Normal	29.5% Alert · n=61
1.49m 13:02 SLST · hourly feed ▼ 0.06 m/h · +0.18 in 24h 0.01 m below Alert · higher than 94.3% of its history Alert 1.5Minor 3Major 4.5 20 Sep 14:05 → 25 Sep 13:02 SLST · shaded: usually, this time of year 0.65–1.23 m, median 0.91 (n=265) 29.5%Alert<5%Minor<5%Major chance of reaching each level within 24h · from 61 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 1.49 is 41% 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.
	6.22 m ▼	6.5	Normal	5.3% Alert · n=38
6.22m 13:07 SLST · hourly feed ▼ 0.24 m/h · +1.25 in 24h 0.28 m below Alert · higher than 86.9% of its history Alert 6.5Minor 7.5Major 9.5 20 Sep 14:04 → 25 Sep 13:07 SLST · shaded: usually, this time of year 1.87–5.90 m, median 4.42 (n=265) 5.3%Alert<8%Minor<8%Major chance of reaching each level within 24h · from 38 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 6.22 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.
	3.80 ft ▲	4	Normal	25.6% Alert · n=43
3.80ft 13:00 SLST · hourly feed ▲ 0.39 ft/h · 0.20 ft below Alert · +0.80 in 24h 0.20 ft below Alert · higher than 89.3% of its history Alert 4Minor 5Major 7 20 Sep 14:01 → 25 Sep 13:00 SLST · shaded: usually, this time of year 1.10–3.50 ft, median 2.60 (n=256) 25.6%Alert4.7%Minor<7%Major chance of reaching each level within 24h · from 43 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 3.80 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.
	14.10 m ▼	15	Normal	4.7% Alert · n=279
14.10m 13:08 SLST · hourly feed ▼ 0.11 m/h · +0.69 in 24h 0.90 m below Alert · higher than 89.7% of its history Alert 15Minor 15.5Major 19 20 Sep 14:05 → 25 Sep 13:08 SLST · shaded: usually, this time of year 10.06–13.61 m, median 11.75 (n=265) 4.7%Alert1.4%Minor<1%Major chance of reaching each level within 24h · from 279 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 14.10 is 64% 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.
	2.78 m ▲	3	Normal	6.4% Alert · n=234
2.78m 13:03 SLST · hourly feed ▲ 0.02 m/h · 0.22 m below Alert · +0.17 in 24h 0.22 m below Alert · higher than 71.5% of its history Alert 3Minor 4Major 5 20 Sep 14:04 → 25 Sep 13:03 SLST · shaded: usually, this time of year 1.05–3.74 m, median 2.83 (n=307) 6.4%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 234 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 2.78 is 65% 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	32.4% Alert · n=34
2.72m 13:05 SLST · hourly feed ▼ 0.29 m/h · +0.21 in 24h 0.28 m below Alert · higher than 96.5% of its history Alert 3Minor 4Major 6 20 Sep 14:01 → 25 Sep 13:05 SLST · shaded: usually, this time of year 1.66–2.21 m, median 1.86 (n=257) 32.4%Alert5.9%Minor2.9%Major chance of reaching each level within 24h · from 34 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 2.72 is 42% 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.
	2.93 m ▼	3.3	Normal	19% Alert · n=84
2.93m 13:02 SLST · hourly feed ▼ 0.07 m/h · +0.23 in 24h 0.37 m below Alert · higher than 58.3% of its history Alert 3.3Minor 4.4Major 5.5 20 Sep 14:03 → 25 Sep 13:02 SLST · shaded: usually, this time of year 1.47–4.57 m, median 3.33 (n=273) 19%Alert7.1%Minor<4%Major chance of reaching each level within 24h · from 84 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 2.93 is 42% 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.
	8.79 m ▲	10	Normal	1.8% Alert · n=276
8.79m 13:03 SLST · hourly feed ▲ 0.04 m/h · 1.21 m below Alert · +0.85 in 24h 1.21 m below Alert · higher than 79.4% of its history Alert 10Minor 10.7Major 12.2 20 Sep 14:13 → 25 Sep 13:03 SLST · shaded: usually, this time of year 5.67–9.64 m, median 7.98 (n=305) 1.8%Alert1.1%Minor0.4%Major chance of reaching each level within 24h · from 276 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 8.79 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.
	3.18 m ▼	5	Normal	0.9% Alert · n=213
3.18m 13:08 SLST · hourly feed ▼ 0.06 m/h · +0.35 in 24h 1.82 m below Alert · higher than 61.7% of its history Alert 5Minor 6.2Major 9.6 20 Sep 14:03 → 25 Sep 13:08 SLST · shaded: usually, this time of year 1.74–3.55 m, median 2.93 (n=228) 0.9%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 213 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 3.18 is 24% 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.
	2.48 m ▼	4	Normal	5.1% Alert · n=197
2.48m 13:02 SLST · hourly feed ▼ 0.02 m/h · -1.92 in 24h 1.52 m below Alert · higher than 89.8% of its history Alert 4Minor 5Major 6.5 20 Sep 13:59 → 25 Sep 13:02 SLST · shaded: usually, this time of year 0.74–3.09 m, median 1.94 (n=307) 5.1%Alert3%Minor<2%Major chance of reaching each level within 24h · from 197 past readings in this state (level only) For reference: Cyclone Ditwah, Nov 2025 Peak 2.77 m on 27 Nov 2025, 00:30 SLST — 0.7× Alert. Today's 2.48 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.
	1.47 m ▼	2.5	Normal	13% Alert · n=154
1.47m 13:05 SLST · hourly feed ▼ 0.02 m/h · -0.89 in 24h 1.03 m below Alert · higher than 88.2% of its history Alert 2.5Minor 4Major 6 20 Sep 14:02 → 25 Sep 13:05 SLST · shaded: usually, this time of year 0.23–1.84 m, median 1.11 (n=305) 13%Alert0.6%Minor<2%Major chance of reaching each level within 24h · from 154 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 1.47 is 49% 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.
	1.35 m ▼	3	Normal	5.7% Alert · n=211
1.35m 13:05 SLST · hourly feed ▼ 0.10 m/h · -0.94 in 24h 1.65 m below Alert · higher than 73.8% of its history Alert 3Minor 4Major 6 20 Sep 14:07 → 25 Sep 13:05 SLST · shaded: usually, this time of year 0.47–1.73 m, median 1.07 (n=265) 5.7%Alert4.3%Minor0.5%Major chance of reaching each level within 24h · from 211 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 1.35 is 19% 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.
	1.35 m ▲	3	Normal	2.6% Alert · n=307
1.35m 13:11 SLST · hourly feed ▲ 0.07 m/h · 1.65 m below Alert · -0.08 in 24h 1.65 m below Alert · higher than 78.9% of its history Alert 3Minor 5Major 7 20 Sep 14:03 → 25 Sep 13:11 SLST · shaded: usually, this time of year 0.55–1.17 m, median 0.75 (n=106) 2.6%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 307 past readings in this state (level only) For reference: Cyclone Ditwah, Nov 2025 Peak 4.78 m on 28 Nov 2025, 12:30 SLST — 1.6× Alert. Today's 1.35 is 28% 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.
	2.01 m ▼	4.8	Normal	4.9% Alert · n=102
2.01m 13:02 SLST · hourly feed ▼ 0.07 m/h · -0.76 in 24h 2.79 m below Alert · higher than 86.9% of its history Alert 4.8Minor 5.8Major 7 20 Sep 14:03 → 25 Sep 13:02 SLST · shaded: usually, this time of year 0.81–2.32 m, median 1.45 (n=264) 4.9%Alert2.9%Minor2%Major chance of reaching each level within 24h · from 102 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 2.01 is 24% 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.
	1.95 m ▼	5.5	Normal	<2% Alert · n=164
1.95m 13:04 SLST · hourly feed ▼ 0.02 m/h · +0.12 in 24h 3.55 m below Alert · higher than 60.4% of its history Alert 5.5Minor 6.5Major 7.5 20 Sep 14:04 → 25 Sep 13:04 SLST · shaded: usually, this time of year 0.89–2.46 m, median 1.76 (n=222) <2%Alert<2%Minor<2%Major chance of reaching each level within 24h · from 164 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 1.95 is 16% 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.
	1.13 m	4	Normal	0.2% Alert · n=580
1.13m 13:02 SLST · hourly feed → steady · +0.04 in 24h 2.87 m below Alert · higher than 65.4% of its history Alert 4Minor 5Major 5.5 20 Sep 14:02 → 25 Sep 13:02 SLST · shaded: usually, this time of year -0.19–1.13 m, median 0.68 (n=126) 0.2%Alert0.2%Minor<1%Major chance of reaching each level within 24h · from 580 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 1.13 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=537
1.64m 13:19 SLST · hourly feed → steady · +0.00 in 24h 4.36 m below Alert · higher than 43.8% of its history Alert 6Minor 7.5Major 10.5 20 Sep 14:00 → 25 Sep 13:19 SLST · shaded: usually, this time of year 1.22–1.82 m, median 1.62 (n=127) <1%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 537 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.
	1.07 m ▼	4.4	Normal	<0% Alert · n=684
1.07m 13:01 SLST · hourly feed ▼ 0.02 m/h · +0.14 in 24h 3.33 m below Alert · higher than 69.2% of its history Alert 4.4Minor 5.4Major 5.9 20 Sep 14:03 → 25 Sep 13:01 SLST · shaded: usually, this time of year 0.42–1.08 m, median 0.72 (n=136) <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 3.18 m on 27 Nov 2025, 09:30 SLST — 0.7× Alert. Today's 1.07 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.
	1.02 m	6.9	Normal	<0% Alert · n=709
1.02m 13:03 SLST · hourly feed → steady · +0.00 in 24h 5.88 m below Alert · higher than 12.2% of its history Alert 6.9Minor 8.4Major 8.8 20 Sep 14:03 → 25 Sep 13:03 SLST · shaded: usually, this time of year 0.93–1.35 m, median 1.04 (n=136) <0%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 709 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=663
0.54m 13:30 SLST · hourly feed → steady · +0.00 in 24h 4.46 m below Alert · higher than 3.9% of its history Alert 5Minor 6Major 7.5 20 Sep 14:04 → 25 Sep 13:30 SLST · shaded: usually, this time of year 0.53–0.82 m, median 0.58 (n=136) 0.2%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 663 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=648
0.41m 13:04 SLST · hourly feed → steady · +0.00 in 24h 3.59 m below Alert · higher than 15% of its history Alert 4Minor 5Major 6 20 Sep 14:01 → 25 Sep 13:04 SLST · shaded: usually, this time of year 0.36–0.41 m, median 0.40 (n=108) 0.5%Alert0.5%Minor<0%Major chance of reaching each level within 24h · from 648 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.
	0.39 m	4.75	Normal	2.3% Alert · n=341
0.39m 13:01 SLST · hourly feed → steady · +0.00 in 24h 4.36 m below Alert · higher than 24.4% of its history Alert 4.75Minor 6Major 7 20 Sep 14:01 → 25 Sep 13:01 SLST · shaded: usually, this time of year -0.25–0.39 m, median 0.01 (n=67) 2.3%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 341 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 0.39 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.
	0.39 m	5	Normal	<1% Alert · n=274
0.39m 13:03 SLST · hourly feed → steady · -0.02 in 24h 4.61 m below Alert · higher than 3.3% of its history Alert 5Minor 6.8Major 7.8 20 Sep 14:00 → 25 Sep 13:03 SLST · shaded: usually, this time of year 0.31–0.78 m, median 0.42 (n=95) <1%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 274 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 10.86 m on 30 Nov 2025, 18:30 SLST — 2.2× Alert, 1.4× Major. Today's 0.39 is 4% of it. 26 Nov 00:30 → 3 Dec 21:30 SLST 39 readings survive from the event in the archive · at its worst, 9 stations in a single report stood at Major Flood.
	0.11 m ▼	3	Normal	0.2% Alert · n=619
0.11m 13:03 SLST · hourly feed ▼ 0.07 m/h · +0.00 in 24h 2.89 m below Alert · higher than 3.3% of its history Alert 3Minor 4Major 5 20 Sep 14:02 → 25 Sep 13:03 SLST · shaded: usually, this time of year 0.12–0.52 m, median 0.25 (n=128) 0.2%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 619 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.
	0.13 m	4.5	Normal	<0% Alert · n=673
0.13m 13:03 SLST · hourly feed → steady · -0.01 in 24h 4.37 m below Alert · higher than 1.5% of its history Alert 4.5Minor 6Major 7 20 Sep 14:06 → 25 Sep 13:03 SLST · shaded: usually, this time of year 0.13–0.37 m, median 0.15 (n=136) <0%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 673 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.
	0.03 m	4	Normal	0.3% Alert · n=655
0.03m 13:03 SLST · hourly feed → steady · -0.05 in 24h 3.97 m below Alert · higher than 2.5% of its history Alert 4Minor 4.5Major 6 20 Sep 14:06 → 25 Sep 13:03 SLST · shaded: usually, this time of year 0.04–0.26 m, median 0.10 (n=128) 0.3%Alert0.3%Minor<0%Major chance of reaching each level within 24h · from 655 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.
	0.02 m	4.84	Normal	<1% Alert · n=225
0.02m 13:00 SLST · hourly feed → steady · +0.00 in 24h 4.82 m below Alert · higher than 14.9% of its history Alert 4.84Minor 5.94Major 8 20 Sep 14:02 → 25 Sep 13:00 SLST · shaded: usually, this time of year -0.11–0.24 m, median -0.02 (n=107) <1%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 225 past readings in this state (level + trend) For reference: Cyclone Ditwah, Nov 2025 Peak 6.12 m on 27 Nov 2025, 18:30 SLST — 1.3× Alert. Today's 0.02 is 0% of it. 26 Nov 09:30 → 3 Dec 18:30 SLST 18 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 13:05 SLST · hourly feed → steady · +0.00 in 24h 4.24 m below Alert · higher than 17.6% of its history Alert 4Minor 4.6Major 6.5 20 Sep 14:01 → 25 Sep 13:05 SLST · shaded: usually, this time of year -0.33–-0.23 m, median -0.27 (n=105) 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.
	-0.25 m	3	Normal	—
-0.25m 13:00 SLST · hourly feed → steady · -0.02 in 24h 3.25 m below Alert · higher than 19.3% of its history Alert 3Minor 4.3Major 6 20 Sep 14:02 → 25 Sep 13:00 SLST · shaded: usually, this time of year -1.40–-0.03 m, median -0.29 (n=136) 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 -0.25 is -5% 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.
	-2.67 m ▲	5	Normal	—
-2.67m 13:01 SLST · hourly feed ▲ 0.04 m/h · +0.49 in 24h 7.67 m below Alert · higher than 48.3% of its history Alert 5Minor 6Major 8 20 Sep 14:00 → 25 Sep 13:01 SLST · shaded: usually, this time of year -3.14–-2.41 m, median -2.99 (n=111) No base rate — this state has only 0 matching readings in 8.3 years (need 30) For reference: Cyclone Ditwah, Nov 2025 Peak 7.90 m on 27 Nov 2025, 12:30 SLST — 1.6× Alert. Today's -2.67 is -34% of it. 26 Nov 00:30 → 27 Nov 12:30 SLST 11 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 49 consecutive reports — so this peak is the last reading before it went silent, not necessarily the crest.

Peradeniya

Nawalapitiya

Closest to their thresholds