Archiv der Kategorie: Wetter

Wasserhosen vorhersagen?

Sind Wasserhosen vorhersagbar? Nein, nicht wirklich und dennoch gibt es ein paar Grundzutaten, die sie begünstigen.

Wasserhosen sind kleine Tornados mit Rotationswindgeschwindigkeiten weit außerhalb der für Segler üblichen, zwölfteiligen Beaufortskala,1 weshalb sie so gefürchtet sind.

Auf Thomas’ »Mare Più«-Blog gibt es einen spannenden aktuellen Bericht einer Wasserhosenbegegnung.

In diesem Artikel werden zwei Wettersituationen vorgestellt und verglichen, in denen in der Adria Wasserhosen beobachtet wurden. Wasserhosen vorhersagen? weiterlesen

  1. Genau genommen ist es eine 13-teilige Skala, weil windstille (Windstärke 0) auch zählt 😉

Wetterbericht MHSC, 19.08.2015, 0600

WEATHER REPORT ISSUED BY THE MARINE METEOROLOGICAL CENTER SPLIT
ON 19.08.2015 AT 0600 HOURS

 

WARNING


ISOLATED THUNDERSTORMS. A RISK OF GUSTS OF NW and NE WINDS 30-40 KNOTS.

SYNOPSIS

A shallow trough with frontal disturbance will be shifting across the
Adriatic eastwards.

WEATHER FORECAST FOR THE ADRIATIC FOR THE FIRST 12 HOURS

Variable winds, mainly NW, 5-15 knots. NW, in the North Adriatic late
in the day NE winds, briefly strengthening in places to 12-26 knots.
Sea 2-3. Visibility 10-20 km. Variably or mainly cloudy. Rain, showers
and thunder, spreading from the North and a part of the Central to the
rest of the Adriatic.

WEATHER FORECAST FOR THE NEXT 12 HOURS

Variably or mainly cloudy with scattered rain, isolated rain showers
and thunder. Light to moderate NW, in places of the North Adriatic
moderate to strong NE winds. Sea smooth or slight, in the North
Adriatic possibly up to moderate.

Wetterbericht MHSC, 12.08.2017, 0600

WEATHER REPORT ISSUED BY THE MARINE METEOROLOGICAL CENTER SPLIT
ON 12.08.2017 AT 0600 HOURS

WARNING

ISOLATED THUNDERSTORMS. IN THE CENTRAL AND SOUTH ADRIATIC LOCAL GUSTS OF NW WINDS, STRENGTHENING, AND ALONG THE COAST DURING THE NIGHT OF N and NE, 35-45 KNOTS. IN THE NORTH ADRIATIC FROM MIDDAY LOCAL GUSTS OF NE WINDS 35-40, IN THE VELEBIT CHANNEL DURING THE NIGHT UP TO 55 KNOTS.

SYNOPSIS

A trough with frontal system is shifting slowly across the Adriatic.

WEATHER FORECAST FOR THE ADRIATIC FOR THE FIRST 12 HOURS

NW winds strengthening to 10-20, in the Central and South Adriatic in
the afternoon up to 28 knots, turning firstly along the coast of the
northern part to NE. Sea 2-3, toward the open 3-4. Visibility 10-20 km.
Variably cloudy and cooler with scattered rain or isolated rain showers
and thunder.

WEATHER FORECAST FOR THE NEXT 12 HOURS

Moderate to strong, only in places up to near gale force NE and NW
winds. Sea slight and moderate. Variably cloudy with scattered rain or
isolated rain showers and thunder, but clearing is expected in the
North, then gradually in the Central Adriatic as well.