,
3 tweets,
2 min read
Read on Twitter
Beautiful summer windstorm with very pronounced structures in Baltic sea right now. Possibly some damage expected at the coast of Estonia and Latvia later today due to 25-30 m/s wind gusts. 
The surface low was associated with a "tropopause cyclone" (or tropopause polar vortex) which dropped south from Arctic ocean (see atmos.albany.edu/student/abentl…).
For this reason, the dynamic tropopause has been anomalously low: e.g. in Jokioinen only at 400 hPa (~7 km).
For this reason, the dynamic tropopause has been anomalously low: e.g. in Jokioinen only at 400 hPa (~7 km).
This kind of strong and "top-heavy" cyclones are rare in July. The sounding observations from Jokioinen, Finland shows that only two times during the 62-year history the 500 mb heights in July has been lower than now.
