Forecast

24
February
Situation and medium-term forecast for

Issued 22nd of February 2021

Situation and medium-term forecast

Current weather conditions boost alder and hazel pollination!

The spring-like weather conditions accelerated the development of alder and hazel catkins. From Bregenz to Eisenstadt, these species reached their peak pollination period which is confirmed by the recorded moderate to high pollen concentrations throughout the weekend. The forecasts predict that this trend will continue for the rest of the week. Therefore, pollen allergy sufferers, reacting to alder and/or hazel, can expect moderate to high levels of allergenic burden. Since the development of alder and hazel catkins in higher altitudes is delayed by harsher environmental conditions, only low allergenic burden may be reached in these areas.

Useful hint: The FFP2 face masks, which are obligatory for using public transport and shopping groceries in Austria, are also beneficial for pollen allergy sufferers. If worn correctly, the face masks prevent pollen from entering the respiratory system as well. 

What else: The pollen spectrum contains pollen from poplar, willow, cypresses, and yews, which are of minor allergological importance.

 

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, hazel’s and alder’s actual flowering start can still vary. The predictions become more accurate as the season approaches.

We expect the readiness to flower for alder and hazel inon
Viennaready to flower
Eisenstadtready to flower
St. Pöltenready to flower
Linzready to flower
Salzburgready to flower
Innsbruckready to flower
Bregenzready to flower
Grazready to flower
Klagenfurt28.02.2021
Bolzanoready to flower
Munichready to flower


Forecast from 22.02.2021
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. Readiness to flowering is not equal to the beginning of the pollen season. When the start of flowering is achieved, most of the plants can 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

alder (Alnus)

Wednesday, 24. February
3
Thursday, 25. February
3
Friday, 26. February
3

hazel (Corylus)

Wednesday, 24. February
3
Thursday, 25. February
3
Friday, 26. February
3

cypress family (Cupressaceae)

Wednesday, 24. February
1
Thursday, 25. February
1
Friday, 26. February
1
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