Mahaweli flood watch

Station	Level	Alert		Next level, 24h
	1.90 m	1.4	Minor floodMinor	4.8% Major · n=547
1.90m 11:17 SLST · hourly feed → steady · +0.35 in 24h 0.50 m above Alert · higher than 85.5% of its history Alert 1.4Minor 1.7Major 2.8 20 Sep 12:01 → 25 Sep 11:17 SLST · shaded: usually, this time of year 0.48–2.68 m, median 1.76 (n=199) 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.
	4.69 m ▲	3.5	Minor floodMinor	10.4% Major · n=433
4.69m 11:06 SLST · hourly feed ▲ 0.01 m/h · +0.41 in 24h 1.19 m above Alert · higher than 95.9% of its history Alert 3.5Minor 4Major 5 20 Sep 12:05 → 25 Sep 11:06 SLST · shaded: usually, this time of year 2.59–4.84 m, median 4.17 (n=306) 97.7%Alert70%Minor10.4%Major chance of reaching each level within 24h · from 433 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 4.69 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.
	6.49 m ▼	5	Minor floodMinor	6.2% Major · n=272
6.49m 11:05 SLST · hourly feed ▼ 0.01 m/h · -0.15 in 24h 1.49 m above Alert · higher than 92.5% of its history Alert 5Minor 6Major 7.5 20 Sep 12:03 → 25 Sep 11:05 SLST · shaded: usually, this time of year 3.79–6.84 m, median 5.85 (n=307) 96.7%Alert52.9%Minor6.2%Major chance of reaching each level within 24h · from 272 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 6.49 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.
	6.28 m ▼	5.2	Alert	10.2% Minor · n=196
6.28m 11:03 SLST · hourly feed ▼ 0.02 m/h · +0.53 in 24h 1.08 m above Alert · higher than 92.9% of its history Alert 5.2Minor 7.5Major 9.5 20 Sep 12:07 → 25 Sep 11:03 SLST · shaded: usually, this time of year 1.43–6.09 m, median 3.65 (n=296) 88.3%Alert10.2%Minor<2%Major chance of reaching each level within 24h · from 196 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 6.28 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.
	4.82 m	4	Alert	5.5% Minor · n=91
4.82m 11:05 SLST · hourly feed → steady · +0.06 in 24h 0.82 m above Alert · higher than 87.1% of its history Alert 4Minor 6Major 7.5 20 Sep 12:09 → 25 Sep 11:05 SLST · shaded: usually, this time of year 2.33–5.25 m, median 4.02 (n=198) 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 4.82 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.
	4.37 m ▼	4	Alert	17.9% Minor · n=140
4.37m 11:06 SLST · hourly feed ▼ 0.05 m/h · -0.94 in 24h 0.37 m above Alert · higher than 95.3% of its history Alert 4Minor 6Major 7.5 20 Sep 12:08 → 25 Sep 11:06 SLST · shaded: usually, this time of year 1.95–4.30 m, median 2.79 (n=296) 75%Alert17.9%Minor5.7%Major chance of reaching each level within 24h · from 140 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 4.37 is 106% 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.
	1.55 m ▼	1.5	Alert	10.7% Minor · n=121
1.55m 11:03 SLST · hourly feed ▼ 0.04 m/h · +0.23 in 24h 0.05 m above Alert · higher than 95.8% of its history Alert 1.5Minor 3Major 4.5 20 Sep 12:02 → 25 Sep 11:03 SLST · shaded: usually, this time of year 0.65–1.23 m, median 0.91 (n=264) 76.9%Alert10.7%Minor4.1%Major chance of reaching each level within 24h · from 121 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 1.55 is 43% 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.

Station

Level

Alert

Next level, 24h

1.90 m

1.4

Minor floodMinor

4.8% Major · n=547

4.69 m ▲

3.5

Minor floodMinor

10.4% Major · n=433

6.49 m ▼

Minor floodMinor

6.2% Major · n=272

6.28 m ▼

5.2

Alert

10.2% Minor · n=196

4.82 m

Alert

5.5% Minor · n=91

4.37 m ▼

Alert

17.9% Minor · n=140

1.55 m ▼

1.5

Alert

10.7% Minor · n=121

Station	Level	Alert		Next level, 24h
	6.26 m ▼	6.5	Normal	5.4% Alert · n=37
6.26m 11:02 SLST · hourly feed ▼ 0.02 m/h · +1.42 in 24h 0.24 m below Alert · higher than 87.3% of its history Alert 6.5Minor 7.5Major 9.5 20 Sep 12:03 → 25 Sep 11:02 SLST · shaded: usually, this time of year 1.87–5.90 m, median 4.42 (n=264) 5.4%Alert<8%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 10.95 m on 30 Nov 2025, 00:30 SLST — 1.6× Alert, 1.1× Major. Today's 6.26 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.
	14.25 m ▼	15	Normal	4.7% Alert · n=278
14.25m 11:08 SLST · hourly feed ▼ 0.06 m/h · +1.05 in 24h 0.75 m below Alert · higher than 90.4% of its history Alert 15Minor 15.5Major 19 20 Sep 12:05 → 25 Sep 11:08 SLST · shaded: usually, this time of year 10.06–13.58 m, median 11.75 (n=264) 4.7%Alert1.4%Minor<1%Major chance of reaching each level within 24h · from 278 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 14.25 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.
	2.76 m ▲	3	Normal	6.4% Alert · n=233
2.76m 11:03 SLST · hourly feed ▲ 0.01 m/h · 0.24 m below Alert · +0.16 in 24h 0.24 m below Alert · higher than 71.1% of its history Alert 3Minor 4Major 5 20 Sep 12:03 → 25 Sep 11:03 SLST · shaded: usually, this time of year 1.05–3.74 m, median 2.83 (n=306) 6.4%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 233 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 2.76 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.
	3.03 m ▼	3.3	Normal	19.3% Alert · n=83
3.03m 11:02 SLST · hourly feed ▼ 0.04 m/h · +0.42 in 24h 0.27 m below Alert · higher than 59.5% of its history Alert 3.3Minor 4.4Major 5.5 20 Sep 12:02 → 25 Sep 11:02 SLST · shaded: usually, this time of year 1.47–4.57 m, median 3.33 (n=272) 19.3%Alert7.2%Minor<4%Major chance of reaching each level within 24h · from 83 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 3.03 is 43% 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.
	8.75 m ▲	10	Normal	22.8% Alert · n=184
8.75m 11:02 SLST · hourly feed ▲ 0.01 m/h · +0.87 in 24h 1.25 m below Alert · higher than 78.5% of its history Alert 10Minor 10.7Major 12.2 20 Sep 12:30 → 25 Sep 11:02 SLST · shaded: usually, this time of year 5.67–9.64 m, median 7.98 (n=304) 22.8%Alert2.2%Minor0.5%Major chance of reaching each level within 24h · from 184 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 8.75 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.
	2.59 m	3	Normal	27.5% Alert · n=40
2.59m 11:03 SLST · hourly feed → steady · -0.01 in 24h 0.41 m below Alert · higher than 95.5% of its history Alert 3Minor 4Major 6 20 Sep 12:01 → 25 Sep 11:03 SLST · shaded: usually, this time of year 1.66–2.20 m, median 1.86 (n=256) 27.5%Alert2.5%Minor2.5%Major chance of reaching each level within 24h · from 40 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 2.59 is 40% 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 ft ▲	4	Normal	31.5% Alert · n=54
3.35ft 11:02 SLST · hourly feed ▲ 0.25 ft/h · 0.65 ft below Alert · +0.65 in 24h 0.65 ft below Alert · higher than 83.3% of its history Alert 4Minor 5Major 7 20 Sep 12:05 → 25 Sep 11:02 SLST · shaded: usually, this time of year 1.10–3.50 ft, median 2.60 (n=255) 31.5%Alert5.6%Minor<6%Major chance of reaching each level within 24h · from 54 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 3.35 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.
	3.25 m ▼	5	Normal	0.9% Alert · n=213
3.25m 11:09 SLST · hourly feed ▼ 0.06 m/h · +0.52 in 24h 1.75 m below Alert · higher than 64.1% of its history Alert 5Minor 6.2Major 9.6 20 Sep 12:02 → 25 Sep 11:09 SLST · shaded: usually, this time of year 1.74–3.55 m, median 2.93 (n=227) 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 3.25 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.
	2.52 m	4	Normal	2.5% Alert · n=40
2.52m 11:00 SLST · hourly feed → steady · -2.21 in 24h 1.48 m below Alert · higher than 90.4% of its history Alert 4Minor 5Major 6.5 20 Sep 12:01 → 25 Sep 11:00 SLST · shaded: usually, this time of year 0.74–3.09 m, median 1.93 (n=306) 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 2.77 m on 27 Nov 2025, 00:30 SLST — 0.7× Alert. Today's 2.52 is 91% 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.
	1.50 m ▼	2.5	Normal	6.5% Alert · n=62
1.50m 11:04 SLST · hourly feed ▼ 0.02 m/h · -1.04 in 24h 1.00 m below Alert · higher than 89.2% of its history Alert 2.5Minor 4Major 6 20 Sep 12:05 → 25 Sep 11:04 SLST · shaded: usually, this time of year 0.23–1.84 m, median 1.11 (n=304) 6.5%Alert3.2%Minor<5%Major chance of reaching each level within 24h · from 62 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 1.50 is 51% 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.
	1.45 m ▲	3	Normal	4.4% Alert · n=90
1.45m 11:01 SLST · hourly feed ▲ 0.03 m/h · -0.30 in 24h 1.55 m below Alert · higher than 78.2% of its history Alert 3Minor 4Major 6 20 Sep 12:07 → 25 Sep 11:01 SLST · shaded: usually, this time of year 0.47–1.73 m, median 1.06 (n=264) 4.4%Alert3.3%Minor1.1%Major chance of reaching each level within 24h · from 90 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 1.45 is 20% 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.
	2.12 m ▼	4.8	Normal	5% Alert · n=101
2.12m 11:02 SLST · hourly feed ▼ 0.04 m/h · -0.65 in 24h 2.68 m below Alert · higher than 88.9% of its history Alert 4.8Minor 5.8Major 7 20 Sep 12:03 → 25 Sep 11:02 SLST · shaded: usually, this time of year 0.81–2.32 m, median 1.45 (n=263) 5%Alert3%Minor2%Major chance of reaching each level within 24h · from 101 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 2.12 is 25% 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 ▲	3	Normal	0.2% Alert · n=512
1.19m 11:01 SLST · hourly feed ▲ 0.03 m/h · -0.18 in 24h 1.81 m below Alert · higher than 69.1% of its history Alert 3Minor 5Major 7 20 Sep 12:04 → 25 Sep 11:01 SLST · shaded: usually, this time of year 0.55–1.12 m, median 0.75 (n=105) 0.2%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 512 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 1.19 is 25% 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.
	1.98 m ▼	5.5	Normal	<2% Alert · n=163
1.98m 11:06 SLST · hourly feed ▼ 0.06 m/h · +0.19 in 24h 3.52 m below Alert · higher than 61.2% of its history Alert 5.5Minor 6.5Major 7.5 20 Sep 12:03 → 25 Sep 11:06 SLST · shaded: usually, this time of year 0.89–2.47 m, median 1.76 (n=221) <2%Alert<2%Minor<2%Major chance of reaching each level within 24h · from 163 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 1.98 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.
	1.14 m	4	Normal	0.2% Alert · n=579
1.14m 11:02 SLST · hourly feed → steady · +0.05 in 24h 2.86 m below Alert · higher than 65.8% of its history Alert 4Minor 5Major 5.5 20 Sep 12:02 → 25 Sep 11:02 SLST · shaded: usually, this time of year -0.19–1.13 m, median 0.68 (n=125) 0.2%Alert0.2%Minor<1%Major chance of reaching each level within 24h · from 579 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.
	1.64 m	6	Normal	<1% Alert · n=536
1.64m 11:01 SLST · hourly feed → steady · -0.01 in 24h 4.36 m below Alert · higher than 43.7% of its history Alert 6Minor 7.5Major 10.5 20 Sep 12:00 → 25 Sep 11:01 SLST · shaded: usually, this time of year 1.22–1.82 m, median 1.61 (n=126) <1%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 536 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=683
1.10m 11:00 SLST · hourly feed ▲ 0.04 m/h · +0.19 in 24h 3.30 m below Alert · higher than 72.8% of its history Alert 4.4Minor 5.4Major 5.9 20 Sep 12:01 → 25 Sep 11:00 SLST · shaded: usually, this time of year 0.42–1.06 m, median 0.72 (n=135) <0%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 683 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.
	1.02 m	6.9	Normal	<0% Alert · n=708
1.02m 11:02 SLST · hourly feed → steady · +0.01 in 24h 5.88 m below Alert · higher than 12.1% of its history Alert 6.9Minor 8.4Major 8.8 20 Sep 12:02 → 25 Sep 11:02 SLST · shaded: usually, this time of year 0.93–1.35 m, median 1.04 (n=135) <0%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 708 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=662
0.54m 11:00 SLST · hourly feed → steady · +0.00 in 24h 4.46 m below Alert · higher than 3.8% of its history Alert 5Minor 6Major 7.5 20 Sep 12:30 → 25 Sep 11:00 SLST · shaded: usually, this time of year 0.53–0.82 m, median 0.58 (n=135) 0.2%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 662 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=647
0.41m 11:01 SLST · hourly feed → steady · +0.00 in 24h 3.59 m below Alert · higher than 14.9% of its history Alert 4Minor 5Major 6 20 Sep 12:01 → 25 Sep 11:01 SLST · shaded: usually, this time of year 0.36–0.41 m, median 0.40 (n=107) 0.5%Alert0.5%Minor<0%Major chance of reaching each level within 24h · from 647 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	2.4% Alert · n=340
0.39m 11:17 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 12:06 → 25 Sep 11:17 SLST · shaded: usually, this time of year -0.25–0.39 m, median -0.02 (n=66) 2.4%Alert<1%Minor<1%Major chance of reaching each level within 24h · from 340 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 11:05 SLST · hourly feed → steady · -0.03 in 24h 4.61 m below Alert · higher than 3.2% of its history Alert 5Minor 6.8Major 7.8 20 Sep 12:02 → 25 Sep 11:05 SLST · shaded: usually, this time of year 0.31–0.78 m, median 0.42 (n=94) <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.
	0.13 m	4.5	Normal	<0% Alert · n=672
0.13m 11:00 SLST · hourly feed → steady · +0.00 in 24h 4.37 m below Alert · higher than 1.5% of its history Alert 4.5Minor 6Major 7 20 Sep 12:03 → 25 Sep 11:00 SLST · shaded: usually, this time of year 0.13–0.37 m, median 0.15 (n=135) <0%Alert<0%Minor<0%Major chance of reaching each level within 24h · from 672 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.
	0.07 m ▼	3	Normal	4.7% Alert · n=64
0.07m 11:01 SLST · hourly feed ▼ 0.05 m/h · -0.10 in 24h 2.93 m below Alert · higher than 0.1% of its history Alert 3Minor 4Major 5 20 Sep 12:05 → 25 Sep 11:01 SLST · shaded: usually, this time of year 0.12–0.52 m, median 0.25 (n=127) 4.7%Alert<5%Minor<5%Major chance of reaching each level within 24h · from 64 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 0.07 is 2% 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.
	0.03 m	4	Normal	0.3% Alert · n=654
0.03m 11:02 SLST · hourly feed → steady · -0.05 in 24h 3.97 m below Alert · higher than 2.4% of its history Alert 4Minor 4.5Major 6 20 Sep 12:09 → 25 Sep 11:02 SLST · shaded: usually, this time of year 0.05–0.26 m, median 0.10 (n=127) 0.3%Alert0.3%Minor<0%Major chance of reaching each level within 24h · from 654 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 11:02 SLST · hourly feed → steady · -0.01 in 24h 4.82 m below Alert · higher than 14.9% of its history Alert 4.84Minor 5.94Major 8 20 Sep 12:05 → 25 Sep 11:02 SLST · shaded: usually, this time of year -0.11–0.24 m, median -0.03 (n=106) <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 11:01 SLST · hourly feed → steady · +0.00 in 24h 4.24 m below Alert · higher than 17.5% of its history Alert 4Minor 4.6Major 6.5 20 Sep 12:02 → 25 Sep 11:01 SLST · shaded: usually, this time of year -0.33–-0.23 m, median -0.27 (n=104) 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 11:11 SLST · hourly feed ▲ 0.02 m/h · -0.02 in 24h 3.25 m below Alert · higher than 19.3% of its history Alert 3Minor 4.3Major 6 20 Sep 11:52 → 25 Sep 11:11 SLST · shaded: usually, this time of year -1.40–-0.03 m, median -0.29 (n=135) 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.
	-2.82 m ▲	5	Normal	—
-2.82m 11:01 SLST · hourly feed ▲ 0.25 m/h · 7.82 m below Alert · +0.35 in 24h 7.82 m below Alert · higher than 41.6% of its history Alert 5Minor 6Major 8 20 Sep 12:00 → 25 Sep 11:01 SLST · shaded: usually, this time of year -3.15–-2.41 m, median -2.99 (n=110) 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