Forecast

16
January
Situation and medium-term forecast for

Issued 10th of January 2022

Situation and medium-term forecast

First burden caused by hazel pollen!

The above-average temperatures throughout the past weeks had a significant impact on the development of the early flowering hazel and alder species. Therefore, the catkins of these plants are already well developed. Besides the developmental state, the quantity of catkins on each of our reference plants suggest an above-average intensity of the hazel and alder pollen season.

Hazel is currently already causing allergenic burden at climatically favored areas of foehn regions on days without precipitation and temperatures above 0°C. For the rest of the country the start of the hazel pollen season is expected during the next week.

The Spaeth’s alder has passed its peak pollination period and will cause allergenic burden only in close vicinity to parks or areas where these trees are planted. The other alder species that can be found in Austria still need some time until they reach readiness to flower.

The forecasted start date of the hazel and alder pollen season is calculated based on forecast models. Due to the uncertainty of long-term temperature forecasts, the actual flowering start of hazel and alder can still vary. The forecasts become more accurate as the season approaches.

What else: The pollen spectrum contains pollen of cypresses and yews.

We expect the readiness to flower for hazel inon
Vienna17.01.2022
Eisenstadt18.01.2022
St. Pölten22.01.2022
Linz29.01.2022
Salzburg24.01.2022
Innsbruck31.01.2022
Bregenz22.01.2022
Graz22.01.2022
Klagenfurt25.02.2022
Bozen11.01.2022
Munich22.01.2022


Forecast from 10.01.2022
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:

pollenwarndienst.at 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. Johannes Bouchal
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

The current pollen load for Austria

Legende: 1 = Low, 2 = Moderate, 3 = High, 4 = Very High

hazel (Corylus)

Sunday, 16. January
2
Monday, 17. January
2
Tuesday, 18. January
1

cypress family (Cupressaceae)

Sunday, 16. January
1
Monday, 17. January
1
Tuesday, 18. January
1

alder (Alnus)

Sunday, 16. January
1
Monday, 17. January
1
Tuesday, 18. January
1
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