HS 009

issued by the Bureau of Meteorology National meteorological and oceanographic centre for 24 hours commencing 2300 UTC 21 may 2013

please be aware wind gusts can be 40 percent stronger than the averages given here, and maximum waves may be up to twice the height.

Part 1 warnings New Zealand Gale Warning 655 issued 211800utc: over waters east of 160e. Low 993hpa near 41s 167e moving east 10kt. In a belt 180 nautical miles wide centred on a line 47s164e 43s161e 38s163e: clockwise 35kt at times. Gale area moving northeast 15kt.

Part 2 situation at 1800 UTC refer to latest warnings.

Low [1] 993 hpa near 41s167e. Forecast 993 hpa near 40s172e at 221800utc.

Trough [1] from low [2] 1004 hpa near 34s137e 39s137e to 46s140e. Forecast 32s142e 35s136e 39s136e at 221800utc.

Trough [2] developing near 28s155e to low [3] 1007 hpa near 30s156e to 38s156e at 221800utc.

Ridge 44s129e to high 1018 hpa near 46s140e to 43s150e 28s154e. Forecast 38s129e to high 1022 hpa near 46s146e to 39s157e 28s163e at 221800utc.

Part 3 forecast refer to latest warnings.

Within 180nm of ridge and 240nm of high centre: variable winds below 20 knots. Slight to moderate seas. Moderate swell.

Remainder north of ridge: variable winds below 25 knots, tending clockwise within 240 nm of lows. Winds increasing to south to southeasterly 20/30 knots west of trough [1] and clockwise 20/30 knots within 180 nm of low [3]. Winds becoming southerly 25/33 knots within 180 nm west of trough [1] until 221200utc. Moderate to rough seas. Moderate swell.

Remainder south and east of ridge and outside warning area: southwesterly quarter winds east of high, turning northwesterly west of high and tending clockwise within 480 nm of low [1]. Wind speed 15/25 knots, increasing to 20/30 knots east of line 30s170e 41s159e 50s170e and then also southwest of a line 43s129e 50s142e after 220900utc. Moderate to rough seas. Moderate to heavy swell.

Rain areas, scattered showers and isolated thunderstorms within 540nm of low [1] and within 180nm of low [2] and [3]. Isolated showers over remainder away from ridge, becoming more scattered in far southwest of area after 221200utc. Visibility below 2nm in precipitation.

Weather Melbourne

the next routine forecast will be issued at 0800 UTC 22 may 2013