Let’s enjoy this sunny afternoon because the storms and rain are about to return. Thus the civil protection of Lombardy has issued a new weather alert which also includes Monza and Brianza and concerns strong storms and hydrogeological risk. The most intense phase between 6pm today, Saturday 22nd June, and 12pm tomorrow, Sunday 23rd. In Monza and Brianza, as reported by the 3Bmeteo experts, today mostly clear or slightly cloudy skies, with rising clouds up to overcast skies associated with rain and showers, including thunderstorms in the evening, 3mm of rain is expected in the next few hours. Tomorrow will be a rainy day, temperatures will drop by up to 4°. The heaviest phase of precipitation will, as already mentioned, be during the night but showers are also expected during the day at 11 in the morning and also in the late afternoon.
The civil protection statement
A low pressure vortex at high altitude, now centered on Northern France, is moving rapidly towards the Western Alps to reach, within 24 hours, the Ligurian Gulf where it will remain until Monday 24 June. It will therefore be the movement of this vortex that will influence the weather in the region in the next 72 hours at least favoring precipitation in all areas, at times intense but with a reduced thunderstorm component. Considering the uncertainty associated with the trajectory that the vortex will follow, on which the distribution and accumulations of rain will strongly depend, the period between 6pm today, Saturday 22nd June, and 12pm tomorrow, Sunday 23rd, is identified as the most intensity of the disturbed event. In particular, local showers will be possible in mountainous areas this afternoon; Between late afternoon and evening an increase in instability is expected with the possibility of thunderstorms across much of the region, generally of short duration, with a slightly higher probability of triggering in the High Plains area compared to the surrounding areas. Wind reinforcements and gusts expected at this stage during thunderstorms.
The greatest accumulations of rain are expected between the night and morning of tomorrow, or in the first 12 hours of the day; from the afternoon the rainfall will gradually tend to affect the plains and the Apennines more than the Alpine and pre-Alpine ones where they will tend to become less intense or intermittent. The probability of thunderstorms is limited, mainly in the second part of the day. Ventilation reinforcements which will mainly concern the period between night and late afternoon, with local accentuations from the North in Valchiavenna and from the North-East on Lake Garda.
