THUNDERSTORM WARNING!

Issued 21.09.2026, 19:37 · Valid from 21.09.2026, 06:00 until 24.09.2026, 06:00 · Risk level TSTM / TSTM / TSTM

Day 1

21.09.2026

TSTM

Day 2

22.09.2026

TSTM

Day 3

23.09.2026

TSTM

Severe Weather Risk Scale

Level	Meaning	Probability
TSTM	Thunderstorms	—
LEVEL 1	Easy	5 %
LEVEL 2	Notable	15 %
LEVEL 3	Strong	30 %
LEVEL 4	Severe	50 %
LEVEL 5	Extreme	80 %
	Sig. Severe Tornado	—
	Extreme Severe Tornado	—

% = Probability of severe weather occurring in a 45×45 km sector.

This level scale does not apply to days 4 to 8 — there the probability of severe weather is given instead: 15% Severe30% Severe

Outlook days 1 to 8

Day	Outlook	Countries
Day 1	TSTM	—
Day 2	TSTM	—
Day 3	TSTM	—
Day 4	No area	—
Day 5	No area	—
Day 6	No area	—
Day 7	No area	—
Day 8	No area	—

Valid date of the forecast: Day 1: 21.09.2026 (06:00) – 22.09.2026 (06:00) Day 2: 22.09.2026 (06:00) – 23.09.2026 (06:00) Day 3: 23.09.2026 (06:00) – 24.09.2026 (06:00)

TSTM

Warning: THUNDERSTORM WARNING!

Tag 1:

In allen Thunderstorm Risks ist verbreitet mit Gewittern zu rechnen!

Tag 2:

In allen Thunderstorm Risks ist verbreitet mit Gewittern zu rechnen!

Tag 3:

In allen Thunderstorm Risks ist verbreitet mit Gewittern zu rechnen!

Issued 21.09.2026, 19:37 by Max Schiffer

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