Allerta meteo

**strauch67** · 04/03/2006, 19:53

04 mar 19:29 Maltempo: protezione civile lancia allerta meteo
ROMA - Vento, pioggia e neve. La Protezione civile segnala l'arrivo di una perturbazione su diverse regioni italiane. Per le prossime 24 ore si prevedeno forti venti su quasi tutte le regioni e piogge intense in Liguria, Veneto, Friuli-Venezia Giulia, Toscana, Umbria, Lazio e Abruzzo. La neve arrivera' gia' sopra i 400 metri. Intanto le cattive condizioni del mare hanno impedito oggi i collegamenti con le Isole Tremiti (Foggia) dal porto di Termoli. (Agr)

**Marc0** · 04/03/2006, 19:53

appena letto leggendo la posta

**strauch67** · 04/03/2006, 19:55

Caspita. ESTOFEX or ora uscito:

"...SW and central Mediterranean...
Degree of instability ahead of the Mediterranean vort max is somewhat uncertain ... with models differing in depth of the unstable layer. Thinking is that at least isolated/scattered TSTMS should persist over the W and N Mediterranean along and ahead of the main cold front. Shear will be immense ... with more than 25 m/s at the 850 hPa level and 35+ m/s at 500 hPa. This should support an isolated/shallow mesocyclone or to ... and possibly brief/small bow echoes ... capable of severe wind gusts and brief tornadoes.

In the postfrontal environment shallow convection could form ... which may also produce a few lighting strikes. Shallow nature of convection should limit severe threat with this activity.

**Blizzard** · 04/03/2006, 19:58

Originariamente Scritto da strauch67

Caspita. ESTOFEX or ora uscito:

"...SW and central Mediterranean...
Degree of instability ahead of the Mediterranean vort max is somewhat uncertain ... with models differing in depth of the unstable layer. Thinking is that at least isolated/scattered TSTMS should persist over the W and N Mediterranean along and ahead of the main cold front. Shear will be immense ... with more than 25 m/s at the 850 hPa level and 35+ m/s at 500 hPa. This should support an isolated/shallow mesocyclone or to ... and possibly brief/small bow echoes ... capable of severe wind gusts and brief tornadoes.

In the postfrontal environment shallow convection could form ... which may also produce a few lighting strikes. Shallow nature of convection should limit severe threat with this activity.

alex75b · 04/03/2006, 20:00

[quote=strauch67]Caspita. ESTOFEX or ora uscito:

"...SW and central Mediterranean...
Degree of instability ahead of the Mediterranean vort max is somewhat uncertain ... with models differing in depth of the unstable layer. Thinking is that at least isolated/scattered TSTMS should persist over the W and N Mediterranean along and ahead of the main cold front. Shear will be immense ... with more than 25 m/s at the 850 hPa level and 35+ m/s at 500 hPa. This should support an isolated/shallow mesocyclone or to ... and possibly brief/small bow echoes ... capable of severe wind gusts and brief tornadoes.

In the postfrontal environment shallow convection could form ... which may also produce a few lighting strikes. Shallow nature of convection should limit severe threat with this activity.

\o\ \o\ \o\

**Marc0** · 04/03/2006, 20:02

Originariamente Scritto da Blizzard

perÃ² sono troppo rintontito sull'inglese

in pratica che direbbe?

**pisanaccio** · 04/03/2006, 20:06

Intanto oggi a Pisa sud

vento max ...................33 nodi (61,2 km/h) da S/SO con la Davis
..................................34 nodi (62,9 km/h) Da S/O con l' anemografo Thies

Pisa aeroporto vel max ...35 nodi (64,8 km/h) da S/O

Se sono solo delle prove domani sarÃ* uno sfacelo!!!!!!!

pisanaccio

**strauch67** · 04/03/2006, 20:13

Originariamente Scritto da *burian*

perÃ² sono troppo rintontito sull'inglese

in pratica che direbbe?

Vedono un immenso shear positivo (direzione del vento che si muta in senso orario ai vari livelli barici) favorevolissimo allo sviluppo di linee temporalesche e anche supercelle. Chiaramente lo shear Ã¨ solo UNO degli aspetti da tener conto

**Marc0** · 04/03/2006, 20:21

Originariamente Scritto da strauch67

Vedono un immenso shear positivo (direzione del vento che si muta in senso orario ai vari livelli barici) favorevolissimo allo sviluppo di linee temporalesche e anche supercelle. Chiaramente lo shear Ã¨ solo UNO degli aspetti da tener conto

apposto, mi basta giÃ* quello

Grazie

Epurato · 04/03/2006, 20:55

Originariamente Scritto da strauch67

Caspita. ESTOFEX or ora uscito:

"...SW and central Mediterranean...
Degree of instability ahead of the Mediterranean vort max is somewhat uncertain ... with models differing in depth of the unstable layer. Thinking is that at least isolated/scattered TSTMS should persist over the W and N Mediterranean along and ahead of the main cold front. Shear will be immense ... with more than 25 m/s at the 850 hPa level and 35+ m/s at 500 hPa. This should support an isolated/shallow mesocyclone or to ... and possibly brief/small bow echoes ... capable of severe wind gusts and brief tornadoes.

In the postfrontal environment shallow convection could form ... which may also produce a few lighting strikes. Shallow nature of convection should limit severe threat with this activity.