News Archive

Posted: 29 January 2011

Widespread flooding, road closures

UPDATE #1 (0520hrs): The remains of Tropical Cyclone Wilma that hit Northland overnight exceeded expectations lashing the region with heavy rain causing surface flooding, road closures and rain-swollen rivers topping their banks.

The bad weather arrived as forecasted with heavy rain saturating the region’s eastern hills north of Kaeo with 270mm to Whangarei in the south with 220mm.

Northland Regional Council hydrologists says that rainfall intensities reached 20 – 40mm per hour throughout the night with some areas experiencing 100mm in only four hours.

In 19 hours between 8am Friday to 3am Saturday, highest recorded rainfall figures were in Kaeo 279.5mm, Kawakawa 276mm, Puhipuhi 276.5mm and Whangarei Heads 274.5mm.

Even though the rain has now eased, some of the larger catchments throughout the region will continue to rise and overflow their banks.

Northland Civil Defence Emergency Management Controller Tony Phipps says rivers rose rapidly and there is extensive surface flooding throughout Northland, including State Highway 11 at Puketona Junction, State Highway 1 at Kawakawa, Rangiahua and State Highway 10 at Kaeo and Bulls Gorge.

There are also a lot of localised road closures caused by surface flooding and slips.

Emergency services have been extremely busy throughout the night dealing with flood-related incidents and evacuations in high risk areas such as Kaeo, Kawakawa and Haruru Falls.

Mr Phipps says officials are monitoring the situation closely and are warning Northlanders to keep off the roads and avoid all travel unless it’s absolutely necessary.

Road closure information for the state highway network can be checked on the AA Roadwatch website www.aaroadwatch.co.nz and local road closure information will be available later this morning from their District Council.

River and rainfall data from throughout Northland is also automatically posted at two hour intervals on the Regional Council’s website www.nrc.govt.nz/riversandrain

Further information 

TABLE 1: Rainfall figures for 28 & 29 January 2011

Location 1 to 22 mid Jan 2011  22 midn to 24 at 0700 Jan 2011 (55 hrs)  C Wilma 28 Jan 08.00am to 29 Jan 0300 (19 hrs) Jan 2011 Total Jan Average mm % of Jan Average
mm mm   mm
Cape Rienga 13.6 100.8 93 207.4 67.2 309
Kaitaia  18.1 121.8 123.5 263.4 91 289
Oruru 11.5 116.5 190 318 85 374
North West Mangamuka (Te Rore) 14 105 115.5 234.5 108 217
North East Mangamuka (Mangakawakawa) 18 134.5 139 291.5 110 265
North Hokianga (Rotokakahi) 38.5 144.5 117.5 300.5 120 250
East Kaeo Hills (Touwai) 60.5 138.5 279.5 478.5 145 330
South Kaeo (Western Hills) 30.5 118 219.5 368 133 277
Purerua (NE Kerikeri) 24.8 165.4 260.4 450.6 124.7 361
West Kerikeri 31.5 150 220.5 402 123 327
North Kawakawa (Oromahoe) 43 154 276 473 99 478
Ohaeawai 15.5 132.5 223 371 102 364
Kaikohe 22.4 132.8 210.2 365.4 112 326
Omapere 11.5 153 84.5 249 78 319
Tutamoe 25.5 180 123.5 329 107 307
Dargaville 7.2 103.2 99.4 209.8 85 247
East Tutamoe (Opouteke) 17 149 166 332 119 279
South Kaikohe (Twin Bridges) 11.5 124.5   136 103 132
Opua Wharf 27.5 139 237 403.5 99 408
Oakura Bay  45.5 240.5 227 513 106 484
Puhipuhi 53 187.5 276.5 517 126 410
Motatau 36.5 140 216.5 393 104 378
Hikurangi Swamp 27.5 130.5 198 356 86 414
Glenbervie (East Whangarei) 57.5 157 255.5 470 109 431
Ngunguru Northern Hills 73.5 173 249 495.5 118 420
Whangarei 41.8 139 239.4 420.2 107 393
Maungatapere 8 100.5 163 271.5 99 274
Marsden Point 14 54 229.5 297.5 94 316
Whangarei Heads 9.7 147 274.2 430.9 100 431
West Ruakaka 27 113.5 253 393.5 100 394
Brynderwyn 21.5 91 189 301.5 87 347
Maungaturoto 18.5 107 193.5 319 98 326
Paparoa 10.5 126 152.5 289 90 321
Mangawhai (Tara) 26.5 116 246.5 389 91 427
Awaroa (Ruawai) 4.5 95.5 92.5 192.5 68 283
Pouto Point 6.5 59.5 54.5 120.5 86 140