ECSA 2024, Thomas Krennert, Human Weather- and Impact- Reports, Links and Background

ECSA 2024
ECSA 2024

EXN-HS 01 | Session, Wed. 3 April, 10:30 - 12:00

Observe and Document

Thomas Krennert: Human weather- and impact- reports in Austria – A crucial support to mitigate extreme weather- and climate- impacts?


Slide 1:

Slide 1
Slide 1

Facts of Slide 1:

.) The actual weather related disaster risk is located at the intersection of three major components

.) Examples of each component, and overlapping attributes are shown

Links (Some Links are in German):

Hallein Flash Flood (in German)

World Meteorological Organization

WMO Guidelines on Multi-hazard Impact-based Forecast and Warning Services (WMO-No. 1150)

WMO and the Early Warnings for All Initiative

Global Status of Multi-Hazard Early Warning Systems 2023

Early Warnings for All Dashboard

Impact Based Weather Warnings Platform at GeoSphere Austria (former ZAMG)

European Impact Based Weather Warnings Platform METEOALARM

Slide 2:

Slide 2
Slide 2

Facts of Slide 2:

.) Given severe weather impacts, GeoSphere Austria is providing Impact Based Weather Warnings and Forecasts utilizing all available measurement and model data ...

.) ... warnings, advice and information is given to a multitude of stakeholders and customers ...

.) ... triggering various types of response to weather related impacts

.) but even our densely populated network of automated weather stations TAWES is not able to determine all weather impacts, e.g. storm damage, flooding, mud slides, hail size, ...

.) thus, alternative reliable information about the "ground truth" is needed, i.e. eyewitness reports, human weather- and impact reports

.) consequently, a real time feedback loop between disseminated GeoSphere multi hazard warnings and ground truth reports is established


Civil Protection in Austria

National Crisis and Disaster Management (SKKM)

International Disaster Management

ERCC - Emergency Response Coordination Centre


Kaltenberger, R., Schaffhauser, A., and Staudinger, M.: “What the weather will do” – results of a survey on impact-oriented and impact-based warnings in European NMHSs, Adv. Sci. Res., 17, 29–38,, 2020.

Slide 3:

Slide 3
Slide 3

Facts of Slide 3:

.) GeoSphere Austria provides a web app for weather and impact reports and a two step training program within the framework of the TSN trusted Spotter Network Austria

.) Since 2021 about 100k reports have been issued to our database, about 80% from trained observers with higher reliability levels of the given ground truth information

.) the reports are utilized in a wide range of applications, either operationally in real time, or at a later time for scientific or evaluation / verification purposes - within GeoSphere and external collaborators, respectively

Links: Quick Guide

CESARE Database

GeoSphere Austria Severe Weather and Damage Database VIOLA

European Severe Storms Laboratory ESSL / European Severe Weather Database ESWD / European Weather Observer EWOB

Slide 4:

Slide 4
Slide 4

Facts of Slide 4:

.) The national GeoSphere database of weather- and impact reports forms the center of the whole architecture

.) reports can be received either from our web app, or from any other platform or app by our standardized API

.) the API enables real time data exchange to all levels of collaboration, nationally and internationally

.) IMPORTANT!: all partners can thus provide reporting capabilities from their own website / app, addressing their own community, without interference by an extrinsic app, and still exchange all their reports in real time with our national data base

.) Example: SKYWARN Austria

.) Additional information, organizational issues, community support and outreach activity is operated via our outreach platform


Krennert, T., Pistotnik, G., Kaltenberger, R., and Csekits, C.: Crowdsourcing of weather observations at national meteorological and hydrological services in Europe, Adv. Sci. Res., 15, 71–76,, 2018.

Krennert, T., Kaltenberger, R., Pistotnik, G., Holzer, A. M., Zeiler, F., and Stampfl, M.: Trusted Spotter Network Austria – a new standard to utilize crowdsourced weather and impact observations, Adv. Sci. Res., 15, 77–80,, 2018.

Keul, A., Krennert, T. Kaltenberger, 2019: Wetterbegeisterung - Umfragen unter Profis, Amateuren und Allgemeinbevölkerung in Österreich, ÖGM Bulletin, 2019/2

Krennert, T. Kaltenberger, R., Spitaler, T., Schaffhauser, A., 2020: Das Trusted Spotter Network Austria und – Crowdsourcing von menschlichen Wetter- und Impact- Meldungen, ÖGM Bulletin, 2020/1

Slide 5:

Slide 5
Slide 5


WWRP 2024-2, HIWeather Crowdsourcing Guidance Note: Harnessing the Power of the Crowd

Austrian Citizen Science Platform

Selected Partners (in German)

School Partner Program of (in German)

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