Warning situation report for Germany
issued by the German Weather Service
on Tuesday, 13.07.2021, 21:00
From Thuringia and Saxony to the north and west spreading, partly severe thunderstorms, later increasingly transitioning into heavy rain. Risk of severe weather. In the west, extreme continuous rain in some areas. Development of the weather and warning situation for the next 24 hours until Wednesday, 14.07.2021,
21:00: A low pressure area over Central Europe determines the weather in Germany with moist, warm air masses.
It shifts its focus from the southeast to northern Germany and makes the weather of the next few days changeable and partly rainy. THUNDERSTORMS/HEAVY RAIN (SEVERE
WEATHER/EXTREME): Tonight from Thuringia and Saxony to Lower Saxony, Berlin/Brandenburg and NRW spreading, partly severe thunderstorms or larger thunderstorm clusters.
Heavy, locally extremely heavy rain with 30 and 50 l/sqm in a short time is likely. Accumulates over several hours 50 to 100 l/sqm (3 to 6 hours) probably. Especially initially during thunderstorms severe storm gusts, occasional hurricane-like gusts (Bft 10 - 11, 90 to 115 km / h) and larger hail not excluded.
During the day after only a short calming, revived thunderstorm
activity. Initially, especially in the northern half, in the course of the day to the north and west as well as parts of the western center shifting severe thunderstorms with heavy rain around 30 l / sqm, hail and storm gusts probably. Locally extremely heavy rain around 50 l/sqm is not excluded. Multi-hourly (3 to 6 hours) in the west also up to 80 l/sqm. In addition, in the south, especially in the Alps, strong thunderstorms with heavy rain around 30 l/sqm, hail and gusts of wind.
CONTINUOUS RAIN/HEAVY RAIN (SEVERE WEATHER, sometimes EXTREME STORM): In the west, from NRW to Rhineland-Palatinate and Saarland as well as in the extreme west and southwest of Hesse, until Thursday rich, sometimes extreme continuous rain or prolonged heavy rain, of varying intensity and interspersed with thunderstorms.
By Thursday morning, 50 to 100 l/sqm accumulated, probably around 150 l/sqm in some areas, locally up to 200 l/sqm not excluded. The probability of appearance of corresponding quantities is quite certain, but the focal points are still uncertain.
In addition, from the afternoon in the Black Forest again onset of shower-like increased continuous
rain. Precipitation amounts of 50 to 100 l/sqm are possible until the night of Friday, in some places even more. Development but still uncertain.
WIND/STORM On Wednesday, first in the west, later also in the southwest, the wind revived.
At low altitudes stiff gusts of around 55 km/h (Bft 7) are not very likely, in the mountains stormy gusts (Bft 8, up to 70 km/h), exposed storm gusts Bft 9 (around 80 km/h) are not excluded. M.Sc. Felix Dietzsch presents up-to-date information on the severe weather situation and the issued severe weather warnings in a video from the DWD TV studio (status: 13.07.2021 15:00 hrs)
