Crazy storm weather around the world

XPan

The Living Force
713mm (2ft 5'') of rain in 12 hours in Liguria, Italy


883.8 mm rain / 24 hours
4 Oct 2021

The peak of those torrential rainfalls in Northern Italy (Liguria) ended up with 884 mm for the 24 hour period in Rossiglione (GE). An amount which is not far away from the national rain record of 948.4 from 7-8 Oct 1970 in Genoa Bolzaneto.

Edit: I just read in another thread ("Dam failures, floods, landslides") that the total-total beyond 24 hours in Rossiglione, where extreme 927 mm. Mama mia....

3-4 Oct 2021 alluvione-Rossiglione-4-ottobre-2021-3.jpg

Typically for the Genoa region are those pesky V-shaped Thunderstorms growing rapidly in from the south/southwest. They often form over the northern tip of Sardinia and then spread explosive, stretching all the way to Liguria. The geography of the area with the mountains and the south-southwest air flow, it all comes together ferociously feeding those V-shaped thunderstorm complexes with huge amounts of energy and humidity, leading to such large amounts rainfalls in that region. Apparently this happens pretty often during autumn (Gulf Of Genova, Liguria).


This system then moved towards
Sicily (5 Oct 2021) yesterday

16.03.jpg


So, the same system which raved over Liguria on 4 Oct, created day after huge thunderstorms with severe winds affecting the entire island of Sicily before the arrival of the cold front. It destroyed a lot of trees in the Etna-Catania region. A tornado appeared in Augusta. The amounts of rain were rather low, with up to 16-22 mm in the Catania region, and Nicolosi afoot of Etna, saw 28 mm. Nothing really to write home about.

(When I was the first time in Sicily 3-10 Oct 2014, during the first three days the sky was filled with numerous strong thunderstorms very similar to the situation from yesterday & today, but the totals were higher; around 150 mm on the east side of the Etna volcano, while Catania had around 70 mm rain) Yet, I have seen autumn events on the east side of Sicily, in the range of 600-700 mm during 1-2 days in late autumn).

I got reports from Adrano (5 Oct 2021), near Etna in the SW, where large parts of our Italian family lives, that the rainfalls were rather strong (it was here the impulse of a new CB clouds emerged around 15:30-16:00), resulting into floods gushing down the narrow streets of Adrano town... like big times (the streets in the old town are very narrow, leaning downwards). I do not know, if they have a weather station - I have never seen any measurements from there.


6 Oct 2021

Today new T-storms have emerged in the Sicily region but has slided to the southeast (Ragusa, Syracusa, Augusta). The highest preliminary rainfalls are coming from the town of Ragusa with 96 mm (00:00-18:00) Catania reports between 8 and 15 mm rainfalls so far.

Well as our friend said yesterday; autumn has come to Sicily.


Augusta.jpg
Augusta, Sicily 5 Oct 2021

Comio2.jpg
Comiso, Sicily - 5 Oct 2021

IMAGE 2021-10-05 18:56:29.jpg
Catania, Sicily 5 Oct 2021


IMAGE 2021-10-05 18:56:33.jpg
Catania, Sicily 5 Oct 2021

maltempo-sicilia-2.jpg
East Coast of Sicily (?) 5 Oct 2021


maltempo-sicilia-saetta-palermo-5-ottobre-2021.jpg
Palermo, Sicily - 5 Oct 2021

maltempo-catania-5-ottobre-2021-1-1024x993.jpg
Catania City, Sicily - 5 Oct 2021

MyBlitzortungStrikeMap.png
4-6 Oct 2021, lightning strikes over Europe in the last 48 hours
 
Last edited:
Quite the electrical storm in Southern California earlier in the week. Family member said their palm tree was struck and caught fire 😬


Approximately 4,000 lightning bolts were were reported over the past 24 hours, forecasters said Tuesday. About half that total was reported in Orange, San Diego and Riverside counties by 11 p.m. Monday.

The count also included dangerous cloud-to-ground lightning totals of 524 for San Diego County, 171 in Los Angeles County and 62 for Orange County, according to an NWS tally.

The lightning strikes were part of a raging storm that rolled into the Southland on Monday afternoon, bringing periods of heavy downpours, thunder, strong wind gusts and even hail well into the evening hours.
 

c.a.

The Living Force
FOTCM Member

Mari

The Living Force
FOTCM Member
I live in NW Germany for 6 years now and I don´t know if I´m paying more attention or there really is more storms in last ~2 years.
It seems that there is more and more of Sturmtief and it´s not linked to any particular season, they are always accompanied by very strong wind and lots of rain.

It is not at all that cold when you look at the temperature, but the wind is very strong and that brings the "real feel" temperature down.

Currently we have a Storm "Hendrik" here:

Storm Hendrik brings strong gusts and rain

The German Weather Service warns from Wednesday of some strong gusts of wind in North Rhine-Westphalia.

During the course of Wednesday, “Hendrik” will initially bring rain at temperatures between 17 and 19 degrees, the German Weather Service announced on its website. Especially in the Bergisch there can be stormy gusts during the day.
Thunderstorms are possible on Thursday night and temperatures drop to around 8 degrees.

In the second half of the night, Sturm Hendrik picked up again. The weather experts expect gusts of wind throughout the country, and even heavy gusts of wind are expected in the mountains.

Thunderstorms and squalls continue on Thursday during the day with maximum temperatures between 10 and 16 degrees. The storm slowly subsides in the evening.


Warning against entering the woods: Autumn storm "Hendrik" is reaching the region

After an unusually warm October day, the low "Hendrik" brings cold, storms and rain to the region. Improvement is only in sight at the weekend.

Region. With every hour that goes by, the prognoses intensify: The first real autumn storm is imminent on Thursday. Tomorrow, Wednesday, temperatures of up to 19 degrees will be reached again on the front of storm "Hendrik". The force with which Hendrik pumps Mediterranean air to Central Germany on Wednesday is felt on Thursday in the form of sometimes violent gusts of wind. As early as Wednesday, the state forests are warning in a press release against entering the forests in the Harz Mountains.

The first gusts of wind appear in the Upper Harz on Wednesday. In the higher altitudes these can turn out to be hurricane-like. The first real hurricane gusts appear on the Brocken during the day. "The first autumn storm hits heavily thinned forest stands thinned by bark beetle damage," explains Christian Schulz, Head of Operations at the Clausthal Forestry Office. Schulz continues: "They can collapse in the wind and endanger people." All workers and forest machines will be withdrawn from the forest - Visitors should behave in the same way.

Hurricane and snow potential​


In the night of Thursday, the wind speeds continue to increase. In addition, a broad band of rain spreads over the region from the southwest, which, in addition to recurring rain showers , can also bring thunderstorms at certain points . The peak of the gusts of wind is reached between 8 a.m. and 3 p.m. Hurricane-like gusts then occur in Torfhaus at speeds of up to 110 km / h. On the Brocken, hurricanes of up to 120 km / h can even be achieved. Even if it is decreasing, stormy gusts make the Harz unsafe all day even on Friday. On the Brocken, the thermometer falls below freezing point for the first time - it could even snow.


Squalls also in the flatlands​


While terms such as "hurricane" are easier to use in mountainous areas than in the plains, the rest of the region also gets to feel the power of Hendrik. With mild temperatures of up to 19 degrees , however, only wind speeds of up to 55 km / h are reached on Wednesday afternoon . Although this is noticeable, it usually does not cause any major damage to healthy trees. After a short period of calm in the night of Thursday, the wind speeds increase again sharply and reach their peak in the early Thursday afternoon . Squalls with speeds between 75 and 85 km / h cover the region over a large area.Individual peaks of up to 100 km / h and thunderstorms cannot be ruled out by the German Weather Service. Since the wind mainly comes from the west-southwest on Thursday, the Mediterranean heat pump also fails - only maximum values of up to 15 degrees are reached in the region.

Stormy weather also on Friday​


After a temporary calm and low cloud cover on Friday night, the North Sea air now has the greatest influence on the weather in the region. The maximum values on Friday are only in the single-digit range with up to 9 degrees , in addition there is sometimes longer rain and further stormy gusts around 75 km / h in the afternoon . Only on Saturday will the storm finally come to an end. According to current forecasts, October will no longer reach temperatures above 15 degrees. After all - next weekend we will see the sun more often - despite the lower temperatures - and it will stay dry.
 

Mari

The Living Force
FOTCM Member
Things also heat up here in Germany:

Storm warning for NRW tightened - Here there is a threat of heavy gusts of wind up to 115 km / h​



Essen The German Weather Service has been warning of storms in North Rhine-Westphalia since midnight. Especially in the mountains and in the Eifel region there should be gale-force gusts of up to 110 kilometers per hour. There are already restrictions on rail traffic.


Storm low "Ignatz" lashes across the country

The storm "Ignatz" began its march across Germany early in the morning. The first strong autumn storm of the year brought strong gusts in many places, sometimes also thunderstorms and rain. During the course of the day, ntv meteorologist Björn Alexander expects heavy gusts of wind and sometimes hurricane-like gusts of up to 105 kilometers per hour in a strip across the middle to the east and north-east of Germany. In the mountains there could even be hurricane gusts of up to 120 kilometers per hour.

"Short-lived tornadoes" not excluded​

Deutsche Bahn warned of possible train cancellations or delays due to the storm. However, in the morning there were still no reports of actual disruptions in rail traffic. In the northern half of Germany, the weather service warned of thunderstorms moving eastwards, in which hurricane-like gusts could blow at up to 105 kilometers per hour. "Short-lived tornadoes" are not excluded, it said.


Welt warns of heavy gusts of wind up to 150 km / h
 

jhonny

The Living Force
FOTCM Member
Things also heat up here in Germany:
Here in Belgium as well. Since last night, there have been strong winds and a lot of rain.

Gusts of up to 100 km/h are expected across Belgium on Wednesday night, according to the Royal Meteorological Institute (RMI), which has issued a yellow warning for the whole country starting from midnight.

Winds are expected to reach 70 to 90 km/h in most areas, but speeds reaching 100 km/h cannot be ruled out, reports the Belga News Agency.

As a precautionary measure, Brussels Environment has announced the closure of regional green spaces and car parks in the Soignes forest. The City of Liège has also taken measures to restrict public access to parks and cemeteries.

The situation is expected to return to normal by the end of the morning on Thursday.

In the event of storm damage or water damage for which fire brigade assistance is required, the 1722 non-emergency number should be called. The FPS also recommends using the electronic hotline 1722.be, which is considered to be “the most direct way of requesting assistance from the fire brigade in situations where no life is in danger”.

If the situation is life-threatening, 112 should be called.
 

thorbiorn

The Living Force
FOTCM Member
Winds and warnings
World Weather Information, that has links to all the national services, also links to Severe Weather Information Service. Clicking on the beta version of their world map gave:
Oct 21 2021.png
From the symbols, it is clear that it is windy in parts of Europe. To get a close up of the local warnings there is the "local" European service: https://meteoalarm.org/en/ where at the time of posting there was:
meteoalarm.org.png
Central Germany is rather red, to explore that more, Ventusky.com has a map where one can select the wind speed for different altitudes above the ground. The first is at 10 m. (Note: Ventusky has a problem with the names being misplaced when zooming in the browser I use; the rest is working.)

Ventusky wind 10 m.png
But 250 m presents a picture that matches the warnings in Germany much better!
Ventusky wind 250 m.png
After that, it drops again in 500 m, while 100 m is in between 10 m and 250 m. The strong winds are explained with the low-pressure system over Scandinavia:
Gismeteo.ru.png
 

c.a.

The Living Force
FOTCM Member
Winds and warnings
Very localized but destructive wind phenomena are identified and will be the subject of in-depth investigations to determine their nature
:https://keraunos.org/actualites/fil



Agricultural crops destroyed Wednesday morning before the #TempêteAurore . Tornado? Descending gusts…? Very localized windy phenomenon visible on the videos. Several possible cases yesterday in #Bretagne . Poke @KeraunosObs @JournalMeteo Video :@OSourdin

 
Top Bottom