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Liguria. After the heavy thunderstorms this morning, Arpal has updated the alert for widespread showers and thunderstorms.
In the center-east of Liguria (small and medium basins in zones B, C and E) there will be an orange alert until 11 a.m., Sunday August 30, then yellow until 1 p.m. In western Liguria (small and medium basins in zone A) it will be yellow until 8 a.m. on Sunday, August 30. Inland central-west Liguria (small and medium basins in zone D) will be orange until 6pm today, Saturday, August 29, then yellow until 8 am tomorrow, Sunday, August 30.
With regard to large basins, in zone A the alarm level is green; within the center-west (zone D) there will be a yellow alert until 6 pm today; to the east (zones C and E) it will be yellow until 1:00 p.m. tomorrow.
Zone A includes the coast from Ventimiglia to Noli, the entire province of Imperia, the Centa valley; zone B the coast from Spotorno to Camogli including, Val Polcevera and Alta Val Bisagno; zone C the coast from Portofino to the border with Tuscany, the entire province of La Spezia, Val Fontanabuona and Valle Sturla; the D Valle Stura area and the interior of Savona up to Val Bormida; the zone E Valle Scrivia, Val d’Aveto and Val Trebbia.
Today, which saw the most intense storm structure affect first the upper Val d’Aveto (Cabanne di Rezzoaglio (67.6 mm in one hour), then the Genoese west and the Turchino (Isoverde 121.8 mm in one hour, 18 , 6 mm in 5 minutes), the scene does not change.
The advection of humid air continues for much of the afternoon, with the possibility of other strong, organized and persistent storms. We will have a respite from the rainfall before a new intensification in correspondence with the approach and passage of the royal front, which will take place overnight in Liguria.
We will witness generalized rainfall, with the possibility of new strong storms, also accompanied by hail: the incoming air will be colder and the greater difference in temperature will accentuate instability.
Since the morning, marked improvement in the extension from west to east, with the return of the sun for most of the day; however, there will be possible new thunderstorms starting in the afternoon. Pay attention to the sea, which will rise to assault the entire coast, and to the winds
Here is the weather advisory with the description of the most significant expected phenomena.
Today Saturday August 29 a disturbance crosses Liguria and brings widespread rains in the center-Levante with significant accumulations in B and E, high in C. The rains can take an inverse or storm character with probable strong phenomena in all areas, even organized and persistent in B , C, D and E. Winds 50-60km / h from the southeast in B, C and E with gusts and local reinforcements on the ridges.
morning Sunday August 30 at night bad weather with moderate rains in D, heavy in B, C and E, where the accumulated amounts will reach significant or high values. In all areas possible strong and organized storms, of a stationary and persistent nature in B, C and E. Rapid depletion of the western precipitation in the morning in a context of residual instability with at most moderate showers. Southwest winds up to 50-60 km / h in B, C and E, locally in D; up to 70-80 km / h at A with gussets and gusts on exposed heads and ridges; Southwest swell on all coasts.
Day after tomorrow Monday August 31 Unstable conditions remain with possible rains, even moderate ones. Sea rough locally in C in the early hours of the day, decreasing.
The Regional Operations Room will remain open for the duration of the alert.
In case of intense events, the follow-up will be published during the alert on the site https://allertaliguria.regione.liguria.it, also sent via Twitter (follow @ARPALiguria). On the page www.facebook.com ArpaLiguria post with images, graphics and data.
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