Issued 28th of May 2020
Situation and medium-term forecast
Fluctuating grass pollen concentrations during the Pentecost holiday!
In Carinthia, Tyrol, Vorarlberg, and the south of Styria, the weather conditions for the Pentecost holiday will remain mainly sunny. Therefore, grass pollen concentrations will remain in these federal states on a high level. In the rest of Austria, changeable weather conditions with sunny phases and frequent rainfalls will lead to fluctuating grass pollen concentrations this weekend.
Meadow grass, fescua grasses, couch grass, ryegrass, false-oat grass and cock’s-foot grasses flower among the grasses. Cultivated rye is flowering as well. Therefore, grass pollen allergy sufferers should avoid flowering meadows and fields, because the local burden is higher there. The burden is lower where it was mowed. Grass pollen allergy sufferers will find good conditions in mid altitudes, at or above the timberline as well as in dense deciduous forests. Sorrels, docks, and plantains continue their flowering and can cause an additional allergenic burden in locations with flowering grasses.
The flowering of green alder continues in its sub-alpine areas of growth. Due to pollen release promoting sunny weather conditions moderate green alder pollen concentrations can be reached in valleys and alpine basins in Carinthia, Tyrol, Vorarlberg, and the south of Styria. In the rest of Austria, the main burden remains in mid- to high-altitude regions. Its pollen will mostly arrive in a low amount in valleys and lowlands because of frequent rainfalls. Green alder pollen might concern alder and birch pollen allergy sufferers.
The pollen spectrum contains also pollen from members of the nettle and rose family, beech, oak, elderberry, ash tree, horse-chestnut, walnut, willow, fir, spruce, cypresses, and yews and fungal spores.
The concentrations of fungal spores are on the rise. For the coming week moderate concentrations of Alternaria spores are to be expected.
|We expect the readiness to flower for grasses in||on|
|Vienna||ready to flower|
|Eisenstadt||ready to flower|
|St. Pölten||ready to flower|
|Linz||ready to flower|
|Salzburg||ready to flower|
|Innsbruck||ready to flower|
|Bregenz||ready to flower|
|Graz||ready to flower|
|Klagenfurt||ready to flower|
|Bolzano||ready to flower|
|Munich||ready to flower|
Forecast from 28.05.2020
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:
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. 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)