Australian Weather News -- 02 SEP 2019

Monday 02 SEP 2019

DWS ARCHIVE
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National Daily Weather Summary

Weather, Climate and Site News

Category 5 Hurricane Dorian pounds northern Bahamas, threatens east coast of USA
Mon 2 Sept 2019 2019

Category 5 Hurricane Dorian runs west along the island of Grand Bahama at 23.22 AEST today. Look carefully into the eye and you can see a whitish (warmer, so lower level) inner eye and circulations. The eye is slightly deformed due to Dorian's interaction with the island. While the hurricane's track has been difficult to predict because of a very stagnant upper air situation, the National Hurricane Center believes it will curve to the NW before skirting the US coast all the way from Florida to the Carolinas. NOAA via Tropical Tidbits.

This is Hurricane Dorian at 23.22 EST (09.22 local time) which had almost come to a halt over central Grand Bahama island, just NE of the city of Freeport. It is a truly monstrous storm. It developed in the central Atlantic on 24 August, reached hurricane strength on the 28^th and reached Category 5 intensity yesterday 1 September. As it made landfall at Elbow Cay, just east of Great Abaco Island to the east of Grand Bahama, it bottomed at a pressure of 910hPa with sustained 1-minute winds of 295km/h.

Hurricane Dorian has tied with Hurricanes Wilma (2005), Gilbert (1988) and the "Labor Day" Hurricane of 1935 as having the second strongest 1-minute sustained winds in the Atlantic in the modern record. Hurricane Allen in 1980 had the strongest at 305km/h. Dorian ties with the "Cuba" Hurricane of 1924 as having the fifth-lowest Atlantic hurricane central pressure at landfall; the "Labor Day" Hurricane has the record for that with 892hPa while Wilma holds the record for the lowest pressure over the open Atlantic of 882hPa.

As the satellite image shows, Dorian has an extremely well-defined eye nearly 40km in diameter. The eye is slightly deformed as it has encountered friction over the island, and an inner eyewall has formed somewhat lowering sustained winds to 270km/h with gusts to 320km/h. Storm surges of 5.5 to 7m are expected and have occurred if this video from Bahama's The Tribune can be independently verified. The video was carried in this NBC news story giving what was then known about the northern Bahamas and shows a house-high storm surge on Great Abaco. The Tribune* is running live updates on the hurricane, though the devastation will mean that it will be days before a detailed picture of damage and people's survival emerges.

The National Hurricane Center (NHC), in its 05.00 local time (19.00 AEST) Forecast Discussion said that the currents steering the hurricane have weakened to the point where it is almost at a standstill over the eastern Grand Bahama Island, moving westward at best at 2km/h. The forecast upper situation is most likely to slowly steer Dorian to the NW then N before accelerating to the NE, a track which would cause it to move parallel to the east coast of the United States. The NHC adds "Although the official forecast [track] does not show Dorian making landfall along the Florida east coast, it is still possible for the hurricane to deviate from this forecast, and move very near or over the coast. Users are reminded not to focus on the exact forecast track."

Coastal evacuations are taking place in Florida and Georgia, and the Carolinas are next in line. The Guardian is running live updates* which is a good place to keep abreast of general developments and impacts, while the National Hurricane Center page* has the latest forecasts for Dorian down below the map. The Forecast Discussion is best if you can cope with a little technical information. For forecast tracks, model forecasts and satellite images updated every 5 minutes* go to Tropical Tidbits who also give a good detailed commentary* updated regularly.

For notes on annotations (*, etc), attributions, abbreviations and translation using your browser, go here

Provisional records set or equalled today
None known

The day in charts
Surface charts	Satellite images	Rain & temperatures
4am EST		Rainfall -- 24 hours to 9am
		Week to 9am \| SE AUS detail
10am EST		Minimum temperature anomalies
		See actual temperatures
4pm EST		Maximum temperature anomalies
		See actual temperatures
10pm EST		Solar Radiation

Summary of observations

For notes on how to interpret the data and quality control issues, see Daily Weather Summary Help.
Data is as received at 14:18EST, 04/09/2019.

Major centres

	Max ° C	+/- norm ° C	Min ° C	+/- norm ° C	Grass Min ° C	Rain to 9am mm	Evaporation to 9am mm	Sunshine hours	Wind Run to 9am km (24-hour average km/h)	Maximum Gust km/h / hour of occurrence
PERTH AIRPORT	20.2	0.0	8.9	0.0	7.2	17.6	3.8	5.9	429 (17.9)	59/12
BUNBURY	18.8	+0.3	13.3	+4.9	--	18.6	--	--	574 (23.9)	74/11
MANDURAH	18.4	-0.6	15.3	+3.6	--	2.8	--	--	748 (31.2)	61/14
DARWIN AIRPORT	32.9	+0.3	19.1	-3.9	18.0	0.0	6.4	11.3	235 ( 9.8)	34/14
ALICE SPRINGS AIRPORT	30.5	+3.2	6.8	-3.5	--	0.0	--	--	249 (10.4)	39/15
WHYALLA AERO	31.7	+10.1	4.5	-3.5	--	0.0	--	--	316 (13.2)	67/14
ADELAIDE (KENT TOWN)	23.8	+4.7	4.6	-5.1	--	0.2	--	--	160 ( 6.7)	30/10
MOUNT GAMBIER AERO	13.0	-2.9	1.9	-4.4	--	3.4	--	--	421 (17.5)	57/16
MOUNT ISA AERO	31.4	0.0	6.3	-7.9	--	0.0	--	--	190 ( 7.9)	30/09
CAIRNS AERO	27.9	-0.2	17.3	-1.4	--	0.0	--	--	429 (17.9)	39/12
TOWNSVILLE AERO	27.3	-0.5	14.2	-3.2	--	0.0	--	--	274 (11.4)	35/13
MACKAY M.O	25.2	-0.2	14.1	-2.6	--	0.0	--	--	273 (11.4)	24/14
ROCKHAMPTON AERO	29.8	+2.3	9.5	-4.3	--	0.0	--	--	146 ( 6.1)	34/14
BUNDABERG AERO	28.9	+3.3	9.0	-4.7	--	0.0	--	--	189 ( 7.9)	31/12
COOLANGATTA	24.3	+0.9	10.4	-2.9	--	0.0	--	--	275 (11.5)	35/11
BRISBANE AERO	27.0	+2.8	10.3	-2.5	7.3	0.0	5.0	10.1	255 (10.6)	31/13
TOOWOOMBA AIRPORT	23.7	+1.4	7.8	-2.8	--	0.0	--	--	284 (11.8)	46/12
PORT MACQUARIE AIRPORT AWS	28.1	+5.5	5.0	-4.3	--	0.0	--	--	168 ( 7.0)	59/14
WILLIAMTOWN RAAF	22.0	+0.6	8.8	-0.3	--	0.2	--	--	237 ( 9.9)	54/14
BATHURST AIRPORT AWS	17.6	+0.5	0.3	-3.4	--	0.0	--	--	212 ( 8.8)	37/11
ORANGE AIRPORT AWS	14.7	-0.1	3.0	-0.2	--	0.0	--	--	347 (14.5)	39/06
DUBBO AIRPORT AWS	22.5	+1.1	4.1	-2.0	--	0.0	--	--	157 ( 6.5)	39/12
SYDNEY AIRPORT AMO	19.1	-1.6	10.7	+0.1	8.9	0.0	5.0	10.7	322 (13.4)	55/13
RICHMOND RAAF	23.4	+0.5	4.0	-4.0	--	0.2	--	--	123 ( 5.1)	39/12
BELLAMBI AWS	18.9	-1.3	11.2	-1.2	--	0.0	--	--	285 (11.9)	46/11
CANBERRA AIRPORT	19.0	--	0.5	--	--	0.2	--	--	280 (11.7)	28/17
WAGGA WAGGA AMO	18.0	+0.3	4.3	-0.8	--	0.0	--	--	223 ( 9.3)	21/12
ALBURY AIRPORT AWS	17.7	-0.4	2.2	-3.5	--	0.8	--	--	187 ( 7.8)	22/22
MILDURA AIRPORT	24.1	+3.5	1.6	-5.7	--	0.0	6.4	10.0	355 (14.8)	39/13
TATURA INST SUSTAINABLE AG	17.2	-0.3	1.8	-3.6	--	0.6	--	--	291 (12.1)	24/02
BENDIGO AIRPORT	16.5	-0.5	2.4	-2.1	--	2.0	--	--	242 (10.1)	26/01
MELBOURNE AIRPORT	17.5	+0.8	6.7	-0.4	2.6	3.0	3.6	6.6	498 (20.8)	59/21
BALLARAT AERODROME	13.6	-0.3	6.0	+1.2	--	0.8	--	--	451 (18.8)	43/13
LAUNCESTON (TI TREE BEND)	16.6	+0.9	6.5	+1.3	--	0.0	--	--	156 ( 6.5)	30/15
HOBART AIRPORT	18.3	+2.9	6.2	+0.1	3.0	0.0	1.2	10.5	341 (14.2)	30/20
	Max ° C	+/- norm ° C	Min ° C	+/- norm ° C	Grass Min ° C	Rain to 9am mm	Evaporation to 9am mm	Sunshine hours	Wind Run to 9am km	Maximum Gust km/h / hour of occurrence

Hottest

Highest maximum temperature>

Greatest variation above normal maximum

Highest minimum temperature

Greatest variation above normal minimum

36.5 FITZROY CROSSING AERO W Kimberley WA
36.4 CURTIN AERO W Kimberley WA
36.4 MANDORA E Pilbara WA
36.3 KUNUNURRA AERO E Kimberley WA
36.0 BRADSHAW-ANGALLARI VALLEY (DEFENCE) N Rivers NT
36.0 BRADSHAW-KOOLENDONG VALLEY (DEFENCE) N Rivers NT
36.0 YAMPI SOUND (DEFENCE) W Kimberley WA

+12.0 : 33.5 CEDUNA AMO W Agricultural SA
+10.6 : 31.0 KIMBA W Agricultural SA
+10.3 : 32.2 KYANCUTTA W Agricultural SA
+10.2 : 31.9 MINNIPA PIRSA W Agricultural SA
+10.1 : 31.7 WHYALLA AERO W Agricultural SA
+10.1 : 29.6 CLEVE W Agricultural SA

25.0 COCOS ISLAND NTC AWS Islands ISL
24.3 MCCLUER ISLAND N Rivers NT
24.3 COCOS ISLAND AIRPORT Islands ISL
24.0 BROWSE ISLAND Islands ISL
23.1 HORN ISLAND N Peninsula QLD

+6.3 : 14.4 FORREST Eucla WA
+5.3 : 14.5 EUCLA Eucla WA
+5.1 : 12.5 RAVENSTHORPE Cent Wheatbelt WA
+4.9 : 14.9 JURIEN BAY Lower West WA
+4.9 : 13.3 BUNBURY Lower West WA

Coldest

Lowest maximum temperature

Greatest variation below normal maximum

Lowest minimum temperature

Greatest variation below normal minimum

5.0 MOUNT HOTHAM Upper NE VIC
5.5 THREDBO AWS Snowy Mtns NSW
7.2 MOUNT BULLER Upper NE VIC
7.6 FALLS CREEK Upper NE VIC
8.3 PERISHER VALLEY AWS Snowy Mtns NSW

-9.5 : 24.1 BRUNETTE DOWNS N Plateau NT
-3.6 : 13.3 COONAWARRA Lower SE SA
-3.6 : 13.9 NARACOORTE AERODROME Lower SE SA
-3.4 : 14.7 HORSHAM AERODROME Wimmera S VIC
-3.4 : 17.0 HYDEN Cent Wheatbelt WA

-3.3 MOUNT HOTHAM Upper NE VIC
-3.1 GLEN INNES AIRPORT AWS N Tablelands W NSW
-3.0 DINNER PLAIN (MOUNT HOTHAM AIRPORT) Upper NE VIC
-2.9 THREDBO AWS Snowy Mtns NSW
-2.7 PERISHER VALLEY AWS Snowy Mtns NSW
-2.7 LIAWENEE Central Plateau TAS

-9.5 : 5.2 MOUNT ELIZABETH N Kimberley WA
-9.3 : 10.5 KUNUNURRA AERO E Kimberley WA
-8.8 : 5.2 THE MONUMENT AIRPORT Northwest QLD
-8.4 : 5.8 RABBIT FLAT N Plateau NT
-8.4 : 7.4 MANDORA E Pilbara WA

Wettest

Sunniest & dullest

Windiest

Highest gusts

Todays highest rainfall totals for the 24 hours to 9am. It includes the top 5 totals nationally followed by all reported falls of 50mm or more.

Highest and lowest recordings of hours of sunshine for the 24 hours to midnight.

Highest wind run totals in kilometres for the 24 hours to 9am (average speed in brackets). All reported runs > =25km/h are shown.

Highest wind gusts in km/h for the 24 hours to midnight followed by the hour in which it occurred. All stations with gusts > 89km/h are shown.

64.6 NORFOLK ISLAND AERO Islands ISL
32.0 PRESTON VALE VINEYARD
28.2 BICKLEY Lower West WA
26.0 FERGUSON VALLEY Lower West WA
24.6 COLLIE EAST Lower West WA

WESTERN AUSTRALIA
Lower West
28.2 BICKLEY
26.0 FERGUSON VALLEY
24.6 COLLIE EAST

ISLANDS

32.0 PRESTON VALE VINEYARD
Islands
64.6 NORFOLK ISLAND AERO

11.5 GILES METEOROLOGICAL OFFICE Interior WA
11.3 DARWIN AIRPORT N Rivers NT
10.8 INVERELL RESEARCH CENTRE N Tablelands W NSW
10.8 WELLINGTON (D&J RURAL) CW Slopes S NSW
10.7 SYDNEY AIRPORT AMO Sydney--east NSW

.....

6.6 MELBOURNE AIRPORT E Central VIC
5.9 PERTH AIRPORT Lower West WA
5.0 ADELAIDE AIRPORT Adelaide/Lofty SA
4.9 LAKE EILDON N Central VIC
0.0 ORANGE AGRICULTURAL INSTITUTE C Tablelands S NSW

1439 (60.0) CAPE LEEUWIN Lower West WA
1039 (43.3) CAPE NATURALISTE Lower West WA
888 (37.0) ROTTNEST ISLAND Lower West WA
884 (36.8) THREDBO AWS Snowy Mtns NSW
844 (35.2) WILLIS ISLAND Islands ISL
805 (33.5) GARDEN ISLAND HSF Lower West WA
797 (33.2) MAATSUYKER ISLAND LIGHTHOUSE Southeast TAS
753 (31.4) KUNANYI (MOUNT WELLINGTON PINNACLE) Southeast TAS
748 (31.2) MANDURAH Lower West WA
707 (29.5) NORFOLK ISLAND AERO Islands ISL
701 (29.2) ESPERANCE AERO Lower West WA
662 (27.6) MOUNT HOTHAM Upper NE VIC
653 (27.2) HORN ISLAND N Peninsula QLD
649 (27.0) ESPERANCE Lower West WA
644 (26.8) SWANBOURNE Lower West WA
638 (26.6) BUSSELTON AERO Lower West WA
638 (26.6) ALBANY AIRPORT Lower West WA
631 (26.3) CAPE FLATTERY N Coast--Barron QLD
625 (26.0) COLAC (MOUNT GELLIBRAND) W Coast VIC
621 (25.9) HARTZ MOUNTAIN (KEOGHS PIMPLE) Southeast TAS
621 (25.9) HOGAN ISLAND Islands ISL
620 (25.8) JACUP Cent Wheatbelt WA
615 (25.6) NORTH WALPOLE Lower West WA
614 (25.6) BARROW ISLAND AIRPORT W Pilbara WA
610 (25.4) NORSEMAN AERO Goldfields WA
610 (25.4) MOUNT BULLER Upper NE VIC

102/05 CAPE LEEUWIN Lower West WA
80/11 CAPE NATURALISTE Lower West WA
76/13 ROTTNEST ISLAND Lower West WA
76/11 CLEVE AERODROME W Agricultural SA
74/11 BUNBURY Lower West WA

Downpours	High AWS wind reports
High rainfall for periods of 6 hours or less from AWS and synoptic reports.	Storm force gusts (>89km/h) and 10-minute mean gales (>62km/h) reported by AWSs. Wind direction and mean windspeed are shown in brackets.
None reported	None reported