Situation and medium-term forecast for

Issued 20th of January 2020

Situation and medium-term forecast

Increasing burden from hazel is expected for western Austria!

In western Austria (Vorarlberg to Innsbruck) the hazel has started to flower. In eastern Austria more and more hazels are reaching readiness to flower. Here, in climatically favoured sites (southern exposure, lowland habitats) single individuals may already have reached their full flowering potential.

So far only locally alder catkins have reached readiness to flower. In the coming days no significant burden of alder pollen is expected.

Weather promotes pollination during the course of this week due to temperatures of or above 5°C. Thus, an increasing burden (low to moderate) from hazel pollen is expected.

Note: The immune system of a pollen allergy sufferer may be particularly sensitive at the start of the pollen season. Birch pollen allergy sufferers may be potentially concerned by the pollination of the “early bloomers” due to cross-reaction.

What else: Cypresses and yews have reached their readiness to flower.

We expect the readiness to flower for hazel inon
St. Pöltenready to flower
Salzburgready to flower
Innsbruckready to flower
Bregenzready to flower
Grazready to flower
Bolzanoready to flower
Munichready to flower

Forecast from 20.01.2020
Note: The model results give an indication of the expected start of flowering, based on information provided by local pollen warning services with direct reference to the local situation. Start of flowering is not to be equated with the beginning of the pollen season. When the start of flowering is achieved, the majority of the plants have the potential to release pollen, but only when weather conditions are favourable.

Responsible for the content: and the Department of Oto-Rhino-Laryngology of the Medical University Vienna, Research group aerobiology and pollen information
Uwe E. Berger MBA, Mag. Maximilian Bastl PhD and Mag. Dr. Katharina Bastl
medium-term forecast based on model and pollen data from Austria and surrounding countries
reprint and publication in parts or completely is permitted only quoting the source

weather data and today´s forecasts based synoptic data: ZAMG (Zentralanstalt für Meteorologie und Geodynamik)
zum Team

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