Mahaweli flood watch

Station	Level	Alert		Next level, 24h
	1.91 m	1.4	Minor floodMinor	4.7% Major · n=549
1.91m 21:07 SLST · hourly feed → steady · +0.19 in 24h 0.51 m above Alert · higher than 85.9% of its history Alert 1.4Minor 1.7Major 2.8 20 Sep 21:30 → 25 Sep 21:07 SLST · shaded: usually, this time of year 0.54–2.68 m, median 1.76 (n=202) 98.9%Alert63.2%Minor4.7%Major chance of reaching each level within 24h · from 549 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 1.91 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.
	4.75 m	3.5	Minor floodMinor	10.3% Major · n=436
4.75m 21:07 SLST · hourly feed → steady · +0.23 in 24h 1.25 m above Alert · higher than 96.7% of its history Alert 3.5Minor 4Major 5 20 Sep 21:30 → 25 Sep 21:07 SLST · shaded: usually, this time of year 2.59–4.84 m, median 4.18 (n=309) 97.7%Alert70.2%Minor10.3%Major chance of reaching each level within 24h · from 436 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 4.75 is 130% 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.
	6.30 m ▼	5	Minor floodMinor	2.4% Major · n=337
6.30m 21:04 SLST · hourly feed ▼ 0.03 m/h · -0.44 in 24h 1.30 m above Alert · higher than 89.4% of its history Alert 5Minor 6Major 7.5 20 Sep 21:30 → 25 Sep 21:04 SLST · shaded: usually, this time of year 3.79–6.84 m, median 5.86 (n=310) 91.7%Alert35.6%Minor2.4%Major chance of reaching each level within 24h · from 337 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 6.30 is 113% 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.
	4.78 m ▼	4	Alert	5.4% Minor · n=93
4.78m 21:06 SLST · hourly feed ▼ 0.01 m/h · -0.27 in 24h 0.78 m above Alert · higher than 86.3% of its history Alert 4Minor 6Major 7.5 20 Sep 21:30 → 25 Sep 21:06 SLST · shaded: usually, this time of year 2.35–5.25 m, median 4.05 (n=201) 95.7%Alert5.4%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 5.46 m on 28 Nov 2025, 21:30 SLST — 1.4× Alert. Today's 4.78 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.
	5.88 m ▼	5.2	Alert	10.1% Minor · n=199
5.88m 21:05 SLST · hourly feed ▼ 0.07 m/h · -0.29 in 24h 0.68 m above Alert · higher than 89.6% of its history Alert 5.2Minor 7.5Major 9.5 20 Sep 21:30 → 25 Sep 21:05 SLST · shaded: usually, this time of year 1.43–6.10 m, median 3.70 (n=299) 88.4%Alert10.1%Minor<2%Major chance of reaching each level within 24h · from 199 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 5.88 is 58% 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.
	3.07 m ▼	3	Alert	27.9% Minor · n=43
3.07m 21:05 SLST · hourly feed ▼ 0.08 m/h · -0.23 in 24h 0.07 m above Alert · higher than 98.2% of its history Alert 3Minor 4Major 6 20 Sep 21:30 → 25 Sep 21:05 SLST · shaded: usually, this time of year 1.66–2.29 m, median 1.86 (n=259) 65.1%Alert27.9%Minor18.6%Major chance of reaching each level within 24h · from 43 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 3.07 is 47% 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

1.91 m

1.4

Minor floodMinor

4.7% Major · n=549

4.75 m

3.5

Minor floodMinor

10.3% Major · n=436

6.30 m ▼

Minor floodMinor

2.4% Major · n=337

4.78 m ▼

Alert

5.4% Minor · n=93

5.88 m ▼

5.2

Alert

10.1% Minor · n=199

3.07 m ▼

Alert

27.9% Minor · n=43

Station	Level	Alert		Next level, 24h
	2.83 m ▲	3	Normal	6.4% Alert · n=236
2.83m 21:06 SLST · hourly feed ▲ 0.01 m/h · 0.17 m below Alert · +0.16 in 24h 0.17 m below Alert · higher than 73% of its history Alert 3Minor 4Major 5 20 Sep 21:30 → 25 Sep 21:06 SLST · shaded: usually, this time of year 1.05–3.74 m, median 2.82 (n=309) 6.4%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 236 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 2.83 is 66% 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.
	13.75 m ▲	15	Normal	4.2% Alert · n=95
13.75m 21:05 SLST · hourly feed ▲ 0.06 m/h · 1.25 m below Alert · -0.46 in 24h 1.25 m below Alert · higher than 88.1% of its history Alert 15Minor 15.5Major 19 20 Sep 21:30 → 25 Sep 21:05 SLST · shaded: usually, this time of year 10.06–13.63 m, median 11.76 (n=267) 4.2%Alert3.2%Minor<3%Major chance of reaching each level within 24h · from 95 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 13.75 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.
	5.86 m ▼	6.5	Normal	1.7% Alert · n=121
5.86m 21:03 SLST · hourly feed ▼ 0.03 m/h · +0.19 in 24h 0.64 m below Alert · higher than 83.3% of its history Alert 6.5Minor 7.5Major 9.5 20 Sep 21:30 → 25 Sep 21:03 SLST · shaded: usually, this time of year 1.87–5.93 m, median 4.43 (n=267) 1.7%Alert<2%Minor<2%Major chance of reaching each level within 24h · from 121 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 5.86 is 54% 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.
	8.95 m ▲	10	Normal	22.7% Alert · n=185
8.95m 21:03 SLST · hourly feed ▲ 0.03 m/h · 1.05 m below Alert · +0.60 in 24h 1.05 m below Alert · higher than 81.9% of its history Alert 10Minor 10.7Major 12.2 20 Sep 21:30 → 25 Sep 21:03 SLST · shaded: usually, this time of year 5.67–9.64 m, median 7.99 (n=307) 22.7%Alert2.2%Minor0.5%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 8.95 is 75% 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.
	1.34 m ▼	1.5	Normal	22.3% Alert · n=103
1.34m 21:02 SLST · hourly feed ▼ 0.01 m/h · -0.21 in 24h 0.16 m below Alert · higher than 89.5% of its history Alert 1.5Minor 3Major 4.5 20 Sep 21:30 → 25 Sep 21:02 SLST · shaded: usually, this time of year 0.65–1.25 m, median 0.91 (n=267) 22.3%Alert<3%Minor<3%Major chance of reaching each level within 24h · from 103 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 1.34 is 37% 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.
	3.52 m ▲	4	Normal	21.4% Alert · n=145
3.52m 21:11 SLST · hourly feed ▲ 0.01 m/h · -1.60 in 24h 0.48 m below Alert · higher than 90.1% of its history Alert 4Minor 6Major 7.5 20 Sep 21:30 → 25 Sep 21:11 SLST · shaded: usually, this time of year 1.95–4.30 m, median 2.79 (n=299) 21.4%Alert4.8%Minor0.7%Major chance of reaching each level within 24h · from 145 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 3.52 is 85% 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.
	2.74 m ▼	3.3	Normal	42.1% Alert · n=38
2.74m 21:02 SLST · hourly feed ▼ 0.04 m/h · -0.42 in 24h 0.56 m below Alert · higher than 55.9% of its history Alert 3.3Minor 4.4Major 5.5 20 Sep 21:30 → 25 Sep 21:02 SLST · shaded: usually, this time of year 1.47–4.57 m, median 3.33 (n=275) 42.1%Alert13.2%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 7.04 m on 29 Nov 2025, 06:30 SLST — 2.1× Alert, 1.3× Major. Today's 2.74 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.
	2.75 ft ▼	4	Normal	8.4% Alert · n=154
2.75ft 21:02 SLST · hourly feed ▼ 0.05 ft/h · +0.35 in 24h 1.25 ft below Alert · higher than 69.3% of its history Alert 4Minor 5Major 7 20 Sep 21:30 → 25 Sep 21:02 SLST · shaded: usually, this time of year 1.10–3.60 ft, median 2.60 (n=258) 8.4%Alert<2%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 8.50 ft on 1 Dec 2025, 12:30 SLST — 2.1× Alert, 1.2× Major. Today's 2.75 is 32% 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.
	3.10 m	5	Normal	1.1% Alert · n=187
3.10m 21:02 SLST · hourly feed → steady · +0.02 in 24h 1.90 m below Alert · higher than 58.9% of its history Alert 5Minor 6.2Major 9.6 20 Sep 21:30 → 25 Sep 21:02 SLST · shaded: usually, this time of year 1.74–3.55 m, median 2.93 (n=230) 1.1%Alert<2%Minor<2%Major chance of reaching each level within 24h · from 187 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 3.10 is 23% 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.
	2.36 m ▼	4	Normal	0.7% Alert · n=143
2.36m 21:01 SLST · hourly feed ▼ 1.26 m/h · -0.84 in 24h 1.64 m below Alert · higher than 87.7% of its history Alert 4Minor 5Major 6.5 20 Sep 21:30 → 25 Sep 21:01 SLST · shaded: usually, this time of year 0.74–3.09 m, median 1.95 (n=309) 0.7%Alert<2%Minor<2%Major chance of reaching each level within 24h · from 143 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 2.36 is 85% 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.
	2.60 m ▲	4.8	Normal	2.5% Alert · n=40
2.60m 21:03 SLST · hourly feed ▲ 0.10 m/h · 2.20 m below Alert · -1.13 in 24h 2.20 m below Alert · higher than 94.2% of its history Alert 4.8Minor 5.8Major 7 20 Sep 21:30 → 25 Sep 21:03 SLST · shaded: usually, this time of year 0.81–2.32 m, median 1.45 (n=266) 2.5%Alert<8%Minor<8%Major chance of reaching each level within 24h · from 40 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 2.60 is 30% 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.
	1.19 m ▼	2.5	Normal	5.9% Alert · n=136
1.19m 21:05 SLST · hourly feed ▼ 0.04 m/h · -0.53 in 24h 1.31 m below Alert · higher than 79.6% of its history Alert 2.5Minor 4Major 6 20 Sep 21:30 → 25 Sep 21:05 SLST · shaded: usually, this time of year 0.23–1.84 m, median 1.11 (n=307) 5.9%Alert2.9%Minor<2%Major chance of reaching each level within 24h · from 136 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 1.19 is 40% 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.
	1.28 m ▼	3	Normal	4.4% Alert · n=91
1.28m 21:08 SLST · hourly feed ▼ 0.02 m/h · -1.11 in 24h 1.72 m below Alert · higher than 70.7% of its history Alert 3Minor 4Major 6 20 Sep 21:30 → 25 Sep 21:08 SLST · shaded: usually, this time of year 0.47–1.73 m, median 1.07 (n=267) 4.4%Alert3.3%Minor1.1%Major chance of reaching each level within 24h · from 91 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 1.28 is 18% 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.
	1.16 m ▼	3	Normal	0.2% Alert · n=513
1.16m 21:07 SLST · hourly feed ▼ 0.01 m/h · -0.24 in 24h 1.84 m below Alert · higher than 66.7% of its history Alert 3Minor 5Major 7 20 Sep 21:30 → 25 Sep 21:07 SLST · shaded: usually, this time of year 0.55–1.20 m, median 0.76 (n=108) 0.2%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 513 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 1.16 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.
	1.94 m ▼	5.5	Normal	0.2% Alert · n=466
1.94m 21:03 SLST · hourly feed ▼ 0.02 m/h · -0.41 in 24h 3.56 m below Alert · higher than 59.8% of its history Alert 5.5Minor 6.5Major 7.5 20 Sep 21:30 → 25 Sep 21:03 SLST · shaded: usually, this time of year 0.89–2.46 m, median 1.77 (n=224) 0.2%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 466 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 1.94 is 15% 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=582
1.13m 21:02 SLST · hourly feed → steady · +0.03 in 24h 2.87 m below Alert · higher than 65.4% of its history Alert 4Minor 5Major 5.5 20 Sep 21:30 → 25 Sep 21:02 SLST · shaded: usually, this time of year -0.19–1.13 m, median 0.69 (n=128) 0.2%Alert0.2%Minor<1%Major chance of reaching each level within 24h · from 582 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=539
1.64m 21:02 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 21:30 → 25 Sep 21:02 SLST · shaded: usually, this time of year 1.22–1.82 m, median 1.62 (n=129) <1%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 539 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=686
1.07m 21:00 SLST · hourly feed ▲ 0.02 m/h · +0.09 in 24h 3.33 m below Alert · higher than 69.2% of its history Alert 4.4Minor 5.4Major 5.9 20 Sep 21:30 → 25 Sep 21:00 SLST · shaded: usually, this time of year 0.42–1.08 m, median 0.73 (n=138) <0%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 686 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.
	1.00 m	6.9	Normal	<0% Alert · n=711
1.00m 21:01 SLST · hourly feed → steady · -0.01 in 24h 5.90 m below Alert · higher than 10.9% of its history Alert 6.9Minor 8.4Major 8.8 20 Sep 21:30 → 25 Sep 21:01 SLST · shaded: usually, this time of year 0.93–1.35 m, median 1.04 (n=138) <0%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 711 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 1.00 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.
	0.53 m	5	Normal	0.2% Alert · n=665
0.53m 21:01 SLST · hourly feed → steady · -0.01 in 24h 4.47 m below Alert · higher than 2.6% of its history Alert 5Minor 6Major 7.5 20 Sep 21:30 → 25 Sep 21:01 SLST · shaded: usually, this time of year 0.53–0.82 m, median 0.58 (n=138) 0.2%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 665 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 0.53 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.
	0.41 m	4	Normal	0.5% Alert · n=650
0.41m 21:01 SLST · hourly feed → steady · +0.00 in 24h 3.59 m below Alert · higher than 15.1% of its history Alert 4Minor 5Major 6 20 Sep 21:30 → 25 Sep 21:01 SLST · shaded: usually, this time of year 0.36–0.41 m, median 0.41 (n=110) 0.5%Alert0.5%Minor<0%Major chance of reaching each level within 24h · from 650 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=343
0.39m 21:06 SLST · hourly feed → steady · -0.01 in 24h 4.36 m below Alert · higher than 24.5% of its history Alert 4.75Minor 6Major 7 20 Sep 21:30 → 25 Sep 21:06 SLST · shaded: usually, this time of year -0.25–0.39 m, median 0.02 (n=69) 2.3%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 343 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.
	0.38 m	5	Normal	<1% Alert · n=276
0.38m 18:30 SLST · DMC report → steady · -0.03 in 24h 4.62 m below Alert · higher than 2.9% of its history Alert 5Minor 6.8Major 7.8 21 Sep 07:01 → 25 Sep 18:30 SLST · shaded: usually, this time of year 0.31–0.78 m, median 0.42 (n=97) <1%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 276 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 0.38 is 3% 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.
	0.15 m ▼	3	Normal	0.2% Alert · n=621
0.15m 21:01 SLST · hourly feed ▼ 0.02 m/h · -0.03 in 24h 2.85 m below Alert · higher than 7.5% of its history Alert 3Minor 4Major 5 20 Sep 21:30 → 25 Sep 21:01 SLST · shaded: usually, this time of year 0.12–0.52 m, median 0.25 (n=130) 0.2%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 621 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 0.15 is 4% 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=675
0.13m 21:01 SLST · hourly feed → steady · -0.02 in 24h 4.37 m below Alert · higher than 1.6% of its history Alert 4.5Minor 6Major 7 20 Sep 21:30 → 25 Sep 21:01 SLST · shaded: usually, this time of year 0.13–0.37 m, median 0.15 (n=138) <0%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 675 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=657
0.03m 21:10 SLST · hourly feed → steady · -0.01 in 24h 3.97 m below Alert · higher than 2.6% of its history Alert 4Minor 4.5Major 6 20 Sep 21:30 → 25 Sep 21:10 SLST · shaded: usually, this time of year 0.04–0.26 m, median 0.10 (n=130) 0.3%Alert0.3%Minor<0%Major chance of reaching each level within 24h · from 657 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.
	0.01 m	4.84	Normal	<1% Alert · n=227
0.01m 18:30 SLST · DMC report → steady · -0.01 in 24h 4.83 m below Alert · higher than 13.3% of its history Alert 4.84Minor 5.94Major 8 21 Sep 06:48 → 25 Sep 18:30 SLST · shaded: usually, this time of year -0.11–0.24 m, median -0.02 (n=109) <1%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 227 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 0.01 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.
	-0.17 m ▲	3	Normal	—
-0.17m 21:02 SLST · hourly feed ▲ 0.04 m/h · +0.12 in 24h 3.17 m below Alert · higher than 23.3% of its history Alert 3Minor 4.3Major 6 20 Sep 21:30 → 25 Sep 21:02 SLST · shaded: usually, this time of year -1.40–-0.03 m, median -0.26 (n=138) 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 -0.17 is -3% 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.
	-0.25 m	4	Normal	—
-0.25m 21:09 SLST · hourly feed → steady · +0.00 in 24h 4.25 m below Alert · higher than 14.2% of its history Alert 4Minor 4.6Major 6.5 20 Sep 21:30 → 25 Sep 21:09 SLST · shaded: usually, this time of year -0.33–-0.23 m, median -0.27 (n=107) 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 -0.25 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.
	-2.82 m	5	Normal	—
-2.82m 18:30 SLST · DMC report → steady · +0.34 in 24h 7.82 m below Alert · higher than 41.6% of its history Alert 5Minor 6Major 8 21 Sep 06:01 → 25 Sep 18:30 SLST · shaded: usually, this time of year -3.14–-2.47 m, median -2.98 (n=113) 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 -2.82 is -36% 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