Austria, Hungary: Heavy rain and thunderstorms forecast across Austria and Hungary through at least June 17

Event

Heavy rain and thunderstorms are forecast to occur across Austria and Hungary through at least June 17. As of early June 16, the Meteorological Service of Hungary has issued orange (middle level on a three-tier scale) thunderstorm warnings across the Western Transdanubia Region June 16. Yellow thunderstorms and heavy rainfall warnings are in place for the rest of Hungary through at least June 17.

The Austria Central Institution for Meteorology and Geodynamics has issued orange thunderstorm warnings for northern Burgenland, eastern and central Lower Austria, and Vienna states June 16. Yellow thunderstorm warnings are in place for the rest of Austria through early June 17. Officials could update and possibly extend the coverage of the weather alerts over the coming hours and days.

Hazardous Conditions
Sustained heavy rainfall could trigger flooding in low-lying communities near rivers, streams, and creeks. Urban flooding is also possible in developed areas with easily overwhelmed or a lack of stormwater drainage systems. Sites located downstream from large reservoirs or rivers may be subject to flash flooding after relatively short periods of intense rainfall. Landslides cannot be discounted in hilly or mountainous areas, especially where the soil has become saturated by heavy rainfall.

Authorities could issue mandatory evacuation orders for flood-prone communities over the coming days. The adverse weather conditions could cause power outages throughout the affected area.

Transport
The severe weather will likely contribute to transport disruptions throughout the region. Traffic and commercial trucking delays might occur along regional highways. Strong winds might pose a hazard to high-profile vehicles. Floodwaters and debris flows may render some bridges, rail networks, or roadways impassable, impacting overland travel in and around affected areas. Ponding on road surfaces could cause hazardous driving conditions on regional highways. Authorities could temporarily close some low-lying routes that become inundated by floodwaters. Severe weather could also trigger flight delays and cancellations at airports in the region, including but not limited to Budapest Liszt Ferenc International Airport (BUD), Debrecen International Airport (DEB), and Vienna International Airport (VIE). Flooding could block regional rail lines; freight and passenger train delays and cancellations are likely in areas that see heavy rainfall and potential track inundation.

Disruptions triggered by inclement weather and resultant hazards, such as flooding, could persist well after conditions have improved - it could take days before any floodwaters recede and/or officials clear debris. If there is severe damage to infrastructure, repair or reconstruction efforts may result in residual disruptions.

Advice

Monitor local media for weather updates and related advisories. Confirm all transport reservations and business appointments prior to travel. Make allowances for localized travel delays, as well as potential supply chain disruptions, where flooding has been forecast. Do not drive on flooded roads. Charge battery-powered devices in the case of prolonged electricity outages.

Resources

MeteoAlarm
Austria Central Institution for Meteorology and Geodynamics
Meteorological Service of Hungary (Hungarian)