Adrian Leyser Sturm
@leysersturm.bsky.social
Meteorologist👨🎓
Storm Chaser & Photographer🌪📸
Forecaster & Radar/Tornado Expert
@dwdderwetterdienst.bsky.social
📍Oberursel • Frankfurt/M.• Idar-Oberstein | Germany
Storm Chaser & Photographer🌪📸
Forecaster & Radar/Tornado Expert
@dwdderwetterdienst.bsky.social
📍Oberursel • Frankfurt/M.• Idar-Oberstein | Germany
Record warm November day in southwestern #Germany. Temperatures above 20 °C, despite sunshine obscured by mineral dust. #temperature #records #weather
November 13, 2025 at 4:14 PM
Record warm November day in southwestern #Germany. Temperatures above 20 °C, despite sunshine obscured by mineral dust. #temperature #records #weather
The (possible record-breaking) Canarian #heat bubble (up to 35 °C!) will be sucked in by powerful Atlantic cyclones and carried as far as W-/C-Europe. By the middle of next week, temperatures of around 20 °C and locally around 25 °C are possible there too. #summerlike #weather #forecast #extreme
November 2, 2025 at 11:37 AM
The (possible record-breaking) Canarian #heat bubble (up to 35 °C!) will be sucked in by powerful Atlantic cyclones and carried as far as W-/C-Europe. By the middle of next week, temperatures of around 20 °C and locally around 25 °C are possible there too. #summerlike #weather #forecast #extreme
#Hurricane #Melissa from a #radar perspective. At first glance, the images may not be as stunning as the satellite images of the storm, but they impressively show how Melissa developed into an almost perfect storm with an almost perfect eye wall.
October 29, 2025 at 4:38 AM
#Hurricane #Melissa from a #radar perspective. At first glance, the images may not be as stunning as the satellite images of the storm, but they impressively show how Melissa developed into an almost perfect storm with an almost perfect eye wall.
That doesn't look good...
October 22, 2025 at 1:12 PM
That doesn't look good...
The #severe #storm for parts of Western and Central #Europe has been named by @meteofrance.com: #Benjamin. It temporarily has the characteristics of a Shapiro-Keyser-Cyclone. The @dwdderwetterdienst.bsky.social forecast takes this into account with a frontal fracture.
October 22, 2025 at 9:35 AM
The #severe #storm for parts of Western and Central #Europe has been named by @meteofrance.com: #Benjamin. It temporarily has the characteristics of a Shapiro-Keyser-Cyclone. The @dwdderwetterdienst.bsky.social forecast takes this into account with a frontal fracture.
And here is the radar animation. You can see the continuous “backbulding”. New cells keep forming upstream (i.e. against the movement). The highest reflectivities (the strongest precipitation) thus remain in place.
October 13, 2025 at 11:14 AM
And here is the radar animation. You can see the continuous “backbulding”. New cells keep forming upstream (i.e. against the movement). The highest reflectivities (the strongest precipitation) thus remain in place.
Further (extreme) heavy rainfall and floods for parts of #Spain due to #DANA (=Depresión Aislada en Niveles Altos) #Alice. After #Tarragona was affected yesterday, this time it is the region south of #Valencia and #Amposta. The satellite image shows a two huge, stationary storm systems.
October 13, 2025 at 11:02 AM
Potentially dangerous hybrid storm for the Southeast/East US starting this weekend? Frontal zone/trough could interact constructively with (sub-)tropical disturbance. Also interaction with future Tropical Storm Jerry? (->steering/moisture transport!). But very uncertain due to its complexity!
October 7, 2025 at 8:33 AM
Potentially dangerous hybrid storm for the Southeast/East US starting this weekend? Frontal zone/trough could interact constructively with (sub-)tropical disturbance. Also interaction with future Tropical Storm Jerry? (->steering/moisture transport!). But very uncertain due to its complexity!
During the week an omega blocking pattern will build up. It sets up quite far to the west, so that the large-scale circulation “ATR” (Altantic Ridge) is favored. This will bring calm weather to large parts of W/C-Europe and unsettled weather with heavy precipitation to the southeast and east.
October 6, 2025 at 11:29 AM
During the week an omega blocking pattern will build up. It sets up quite far to the west, so that the large-scale circulation “ATR” (Altantic Ridge) is favored. This will bring calm weather to large parts of W/C-Europe and unsettled weather with heavy precipitation to the southeast and east.
Something to monitor for the Caribbean: Invest #I95L has a high probability of cyclone formation within the next 48 hours. The models suggest that the system could become a #hurricane as it nears the Lesser Antilles in the next 3-4 days. #tropicalweather
www.polarwx.com/tropical/?st...
www.polarwx.com/tropical/?st...
October 6, 2025 at 7:28 AM
Something to monitor for the Caribbean: Invest #I95L has a high probability of cyclone formation within the next 48 hours. The models suggest that the system could become a #hurricane as it nears the Lesser Antilles in the next 3-4 days. #tropicalweather
www.polarwx.com/tropical/?st...
www.polarwx.com/tropical/?st...
Wonderful example of a line oft storms within which several spin-ups (rapidly forming embedded mesocyclones) occur. This just happened in eastern Germany. The risk of tornadoes was increased.
#SevereWeather #Tornado #Supercell #Storms
#SevereWeather #Tornado #Supercell #Storms
September 15, 2025 at 12:24 PM
Wonderful example of a line oft storms within which several spin-ups (rapidly forming embedded mesocyclones) occur. This just happened in eastern Germany. The risk of tornadoes was increased.
#SevereWeather #Tornado #Supercell #Storms
#SevereWeather #Tornado #Supercell #Storms
UPDATE: Official 12-hourly precipitation data, 09/09/25, 6 UTC. Highest amounts:
Bedburg (Germany) 134 mm
Luxembourg Airport 122 mm
Mönchengladbach (Germany) 122 mm
Bedburg (Germany) 134 mm
Luxembourg Airport 122 mm
Mönchengladbach (Germany) 122 mm
September 9, 2025 at 6:33 AM
UPDATE: Official 12-hourly precipitation data, 09/09/25, 6 UTC. Highest amounts:
Bedburg (Germany) 134 mm
Luxembourg Airport 122 mm
Mönchengladbach (Germany) 122 mm
Bedburg (Germany) 134 mm
Luxembourg Airport 122 mm
Mönchengladbach (Germany) 122 mm
Extremely heavy rain in western Germany. North of the Eifel, in the greater Mönchengladbach area, 100-130 l/m² dropped in 6 hours. The highest warning level of the weather service is in force, and there is also a local threat of major flooding. #severeweather #floods
September 9, 2025 at 5:28 AM
Extremely heavy rain in western Germany. North of the Eifel, in the greater Mönchengladbach area, 100-130 l/m² dropped in 6 hours. The highest warning level of the weather service is in force, and there is also a local threat of major flooding. #severeweather #floods
The national weather services are now taking action in response to the threat and have raised their warnings to the second-highest level (France, Luxembourg, Germany). #severeweather #floods #heavyrain
September 8, 2025 at 2:24 PM
The national weather services are now taking action in response to the threat and have raised their warnings to the second-highest level (France, Luxembourg, Germany). #severeweather #floods #heavyrain
The main threat comes from convective intensification. In some places, significant instability is provided within the elevated mixed layer, leading to embedded thunderstorms. Additional orographic enhancement could thus cause extreme amounts of precipitation in small areas.
September 8, 2025 at 11:40 AM
The main threat comes from convective intensification. In some places, significant instability is provided within the elevated mixed layer, leading to embedded thunderstorms. Additional orographic enhancement could thus cause extreme amounts of precipitation in small areas.
A very humid air with an elevated mixed layer (EML), combined with strong synoptic forcing, leads to a hybrid (partly stratiform, partly convective) heavy rainfall event in NE France, W Germany and BeNeLux during the night of Tuesday and Tuesday morning. #SevereWeather #Floods
September 8, 2025 at 11:35 AM
A very humid air with an elevated mixed layer (EML), combined with strong synoptic forcing, leads to a hybrid (partly stratiform, partly convective) heavy rainfall event in NE France, W Germany and BeNeLux during the night of Tuesday and Tuesday morning. #SevereWeather #Floods
Our colleagues at www.estofex.org have issued a Level 2/3. Outlook: www.estofex.org/cgi-bin/poly...
September 3, 2025 at 9:19 AM
Our colleagues at www.estofex.org have issued a Level 2/3. Outlook: www.estofex.org/cgi-bin/poly...
If a #tornado forms, it can be strong and long-lived. The forecast soundings impressively show the extreme low-level shear (51 kn in 0-1 km) and helicity with rare values of SigTor >4. But instability remains critical, especially in the low troposphere/boundary layer. Image: @kachelmannwetter.com
September 3, 2025 at 9:15 AM
If a #tornado forms, it can be strong and long-lived. The forecast soundings impressively show the extreme low-level shear (51 kn in 0-1 km) and helicity with rare values of SigTor >4. But instability remains critical, especially in the low troposphere/boundary layer. Image: @kachelmannwetter.com
There are increasing signs that a pot. severe convective situation could develop in Western Europe today. Supercells could develop in moderately unstable but extremely sheared subtropical air with increased #tornado risk in places. The focus appears to be on NE France, Belgium and the Netherlands.
September 3, 2025 at 9:02 AM
There are increasing signs that a pot. severe convective situation could develop in Western Europe today. Supercells could develop in moderately unstable but extremely sheared subtropical air with increased #tornado risk in places. The focus appears to be on NE France, Belgium and the Netherlands.
"Der Sommer war ja ziemlich wechselhaft und kühl" - so oder so ähnlich hört man es häufig. Wechselhaft: Ja! Aber kühl?!
Vor dem Jahr 2000 hätte ein Sommer wie 2025 zu den heißesten überhaupt gehört! Ein Extremereignis, dass erst durch die Klimaerwärmung der letzten 25 Jahre quasi normalisiert wurde.
Vor dem Jahr 2000 hätte ein Sommer wie 2025 zu den heißesten überhaupt gehört! Ein Extremereignis, dass erst durch die Klimaerwärmung der letzten 25 Jahre quasi normalisiert wurde.
September 2, 2025 at 2:52 PM
"Der Sommer war ja ziemlich wechselhaft und kühl" - so oder so ähnlich hört man es häufig. Wechselhaft: Ja! Aber kühl?!
Vor dem Jahr 2000 hätte ein Sommer wie 2025 zu den heißesten überhaupt gehört! Ein Extremereignis, dass erst durch die Klimaerwärmung der letzten 25 Jahre quasi normalisiert wurde.
Vor dem Jahr 2000 hätte ein Sommer wie 2025 zu den heißesten überhaupt gehört! Ein Extremereignis, dass erst durch die Klimaerwärmung der letzten 25 Jahre quasi normalisiert wurde.
Another I-D2 sounding with SIGTOR 2.2.
September 2, 2025 at 11:41 AM
Another I-D2 sounding with SIGTOR 2.2.
Tomorrow evening there is a slightly enhanced risk of a #tornado or two over Benelux and north-eastern France! Very prominent low-level shear and veering overlapping with weak/moderate instability. Strong forcing is possible just ahead of the approaching cold front. Sounding: @kachelmannwetter.com
September 2, 2025 at 11:13 AM
Tomorrow evening there is a slightly enhanced risk of a #tornado or two over Benelux and north-eastern France! Very prominent low-level shear and veering overlapping with weak/moderate instability. Strong forcing is possible just ahead of the approaching cold front. Sounding: @kachelmannwetter.com