The sun was out, but the weather bureau couldn’t tell you what temperature it was in the Illawarra on Friday morning.
Australia's main weather information services from the Bureau of Meteorology went down, affecting everything from temperature readings to radar imagery for airports.
The data service was working again just after midday on Friday.
A "major network problem" disrupted services this morning, one bureau staff member said, adding that technicians were working to fix it.
Systems are being progressively restored, a spokeswoman for the bureau said, adding that it was a “physical networking issue” and was not caused by hacking.
“Contingencies are in place to communicate severe weather information,” the bureau said in a statement.
For much of the morning, temperature readings on the bureau's website were all stuck at 6am AEDT Friday, as were the radar loops. The bulk of the services are working again.
Earlier, the disruption of information was affecting other weather services, such as Weatherzone, although its ability to make forecasts was not impacted, Rob Sharpe, a Weatherzone meteorologist, said.
Weatherzone’s website was showing Wollongong observations are “temporarily unavailable”.
“People are left in the dark,” Mr Sharpe said, adding it was fortunate the disruption had come at "one of the most benign points of the day".
The outage may have triggered “a lot more complaints” had it come a couple of days ago when wild weather was sweeping across parts of eastern Australia, with heavy rain and some flooding in the Hunter region of NSW, Mr Sharpe said.
Due to an issue with BoM data feeds we currently have no observations on our website or apps. The BoM are working to restore the feed.— Weatherzone (@weatherzone) January 7, 2016
Airports were also affected, with clients telling Weatherzone that they were not getting the usual one-minute weather updates, including the bureau's lightning data.
Sydney Airport has not reported any issues, a spokeswoman for the airport said.
“Airservices is aware that the Bureau of Meteorology is experiencing a physical networking issue which is affecting its systems,” a spokeswoman for Airservices, which handles Australia's air-traffic control system, said.
“There is currently no impact to air traffic operations and we continue to work closely with the Bureau of Meteorology.”
Weatherzone is owned by Fairfax Media, publisher of this website.