Sábado, 25 de Agosto de 2007

 

ATENCION!  ATENCION!  ATENCION!

Estofex avisa para hoy sabado de "Posibles Tornados" en el Norte de Portugal y noroeste de España ( galicia, leon) y en toda la zona centro de la peninsula y  zona este, en esta zona, tornados ya  mejorados "enchanced"
http://www.estofex.org/
... SW / NW Spain and Portugal ...

"The general model pool coincides in the general evolution of this thunderstorm event. A well defined cyclonic vortex just west of Portugal will be nearly stationary during the next 24 hours. Attendant mid-/upper-level wind field favors a region of intense upper-level divergence over Portugal, which is forecast to shift slowly towards the N / NNW.
In addition, GFS allows small pieces of energy to cross the region from the south, which should also enhance the forcing. As mid-level lapse rates steepen somewhat during the forecast period and mixing ratio increases to at or above 10g/kg, a weakly capped atmosphere will be present with up to 1000 J/kg MLCAPE.

Widespread thunderstorm development over SW Spain and S / central Portugal will be underway during the morning hours and a cluster of storms should evolve with a NNW- movement.

Shear is not that strong with DLS of 15-20m/s but should support multicell storms and isolated supercells ( mid-level rotation could be supported by intense cyclonic vorticity ). LCLs are quite low and an isolated tornado is possible although the main risk will be a hail risk ( possible large ).
A better environment for tornadoes could evolve over N-Portugal and NW Spain during the evening / night hours, if latest model trends of GFS area right as LL shear increases to more than 20m/s and 400 J/kg SRH1will be present ! This looks reasonable regarding the intense veered flow
...Central / E Spain...

The main focus for thunderstorm development will be short waves, rotating northward on the eastern flank of the strengthening upper-level low. Again, GFS is quite consistent in developing thunderstorms over the area of interest during the daytime hours with the main activity starting during the evening and night hours.
The combination of steep lapse rates and impressive PBL moisture ( especially over eastern Spain ) should yield moderate instability values with isolated pockets of more than 1kJ/kg MLCAPE.
Each developing storm will be placed in a strongly sheared environment with nice veering throughout the whole layer. DLS will be range between 20m/s and 30m/s with a broad belt of 10m/s to 20m/s LL shear and significantly enhanced SRH values. The main uncertainty is if storms will be able to root into the boundary layer but degree of PBL moisture should support at least a few surface based storms.

Those storms would pose an enhanced tornado and severe / damaging wind gust and large hail risk and confidence is high enough to highlight those regions with a level-2.
Otherwise either shear or instability are somewhat worse outside of the level-2. Still severe storms could produce all kind of severe weather.
."
Ojito al panorama.. que se presenta tormentoso a muy tormentoso en TODA españa

Cáceres (Centro)
(461 m)

Estado del cielo Muy nuboso (Ac. trans) (As.) (Cs.)
Temperatura mínima 17.4ºC
Humedad relativa del aire 60%
Precipitación (últimas 24 h): 2.5 mm
Viento S./SE. flojo

ATENCION!  ATENCION!  ATENCION!

Estofex avisa para hoy sabado de "Posibles Tornados" en el Norte de Portugal y noroeste de España ( galicia, leon) y en toda la zona centro de la peninsula y  zona este, en esta zona, tornados ya  mejorados "enchanced"
http://www.estofex.org/
... SW / NW Spain and Portugal ...

"The general model pool coincides in the general evolution of this thunderstorm event. A well defined cyclonic vortex just west of Portugal will be nearly stationary during the next 24 hours. Attendant mid-/upper-level wind field favors a region of intense upper-level divergence over Portugal, which is forecast to shift slowly towards the N / NNW.
In addition, GFS allows small pieces of energy to cross the region from the south, which should also enhance the forcing. As mid-level lapse rates steepen somewhat during the forecast period and mixing ratio increases to at or above 10g/kg, a weakly capped atmosphere will be present with up to 1000 J/kg MLCAPE.

Widespread thunderstorm development over SW Spain and S / central Portugal will be underway during the morning hours and a cluster of storms should evolve with a NNW- movement.

Shear is not that strong with DLS of 15-20m/s but should support multicell storms and isolated supercells ( mid-level rotation could be supported by intense cyclonic vorticity ). LCLs are quite low and an isolated tornado is possible although the main risk will be a hail risk ( possible large ).
A better environment for tornadoes could evolve over N-Portugal and NW Spain during the evening / night hours, if latest model trends of GFS area right as LL shear increases to more than 20m/s and 400 J/kg SRH1will be present ! This looks reasonable regarding the intense veered flow
...Central / E Spain...

The main focus for thunderstorm development will be short waves, rotating northward on the eastern flank of the strengthening upper-level low. Again, GFS is quite consistent in developing thunderstorms over the area of interest during the daytime hours with the main activity starting during the evening and night hours.
The combination of steep lapse rates and impressive PBL moisture ( especially over eastern Spain ) should yield moderate instability values with isolated pockets of more than 1kJ/kg MLCAPE.
Each developing storm will be placed in a strongly sheared environment with nice veering throughout the whole layer. DLS will be range between 20m/s and 30m/s with a broad belt of 10m/s to 20m/s LL shear and significantly enhanced SRH values. The main uncertainty is if storms will be able to root into the boundary layer but degree of PBL moisture should support at least a few surface based storms.

Those storms would pose an enhanced tornado and severe / damaging wind gust and large hail risk and confidence is high enough to highlight those regions with a level-2.
Otherwise either shear or instability are somewhat worse outside of the level-2. Still severe storms could produce all kind of severe weather.
."
Ojito al panorama.. que se presenta tormentoso a muy tormentoso en TODA españa

Tambien vi isso del estofex.No me agrada nada!

Buenos días desde Alicante (por decir algo):
Datos propios a las 13.40 h:
- Temperatura: 29.4ºC.
- Humedad: 57%.
- Presión: 1011 hPa.
- Viento: 42 km/h ENE.
- Nubosidad: casi cubierto.
- Observaciones: episodio decepcionante por estos lares, en 2 días no ha caído ni una gota. La temperatura ha subido, la humedad está bajando.......eso si, viento un puñao .

Buenas tardes

Este es el cielo de Fregenal a las 13:00 horas y los datos de ahora mismo:


En estos momentos, cielo totalmente cubierto y con tormenta.



Un saludo.

Buenos días

Estos son los datos de Buenos Aires correspondientes a las 9:30 a.m. hora local:

Temperatura: 10,0 C
Humedad: 74 %
Presión: 1019,6 hPa
Viento: leve a moderado del SE/E
Cielo: cubierto
Obs.: hemos tenido algunas lloviznas poco significativas en las últimas dos horas. La temperatura mínima del día fue de 7,8 C.

Saludos

Buenas y sofocantes tardes....,

Temperatura: 28.5ºC
Humedad: 36%
Presion: 1007 hPa
Cielo con aumento de nubosidad.
Viento ENE, 18km/h


NE

Buenas tardes desde SEVILLA.

Datos registrados a 18 h (16 UTC) en zona
central de isla de calor urbano (Miraflores).
Elev. (s.n.m.): 7,5 m (calle); 14 m (suelo garita).
(1980 - 2007):

Temperatura:..................... 24,4 ºC.
Humedad en psicrómetro:..... 69 %.
Presión atmosférica:............ 1012 hPa
(3 mb. más que a la misma hora de ayer).

Viento:
- A la altura del observatorio: SW (muy débil).
- A la altura de capa visible de nubes: S.
         
Cielos: 6/8 (Cu, Sc, As, Ac).

TEMPERATURAS EXTREMAS:

Mínima hoy: 20,0 ºC.    Máxima AYER: 37,0 ºC.
(Ver: Observaciones)

OBSERVACIONES:

Esta mínima es la correspondiente al día de hoy
(desde las 00 horas), sin embargo durante la
noche y hasta después del amanecer la mínima
no bajo de los 24 ºC.

La mínima se registró por tanto durante la mañana
correspondiéndose con un día de temperaturas
bastantes bajas para lo que es habitual en estas
fechas, aunque los rayos del Sol  hicieron elevar el
termómetro hasta los 27 ºC.

Precipitaciones:

- Ayer (hasta las 00 horas): 3 mm.
- Hoy (desde las 00 horas): 2,8 mm.

Cáceres (Centro)
(461 m)

Estado del cielo Muy nuboso (Sc.) (As.) (Cu.)
Temperatura máxima 23.1ºC
Humedad relativa del aire 66%
Precipitación 12.0 mm
Fenómenos destacables Tormenta
Viento SE. flojo

Buenas tardes.

La dana ha pasado por aquí con más pena que gloria en cuanto ha lluvias, pues estas han sido nulas. Eso sí viento tenemos para dar y regalar con rachas bastante fuertes de más de 60 km/h. Las temperaturas en ascenso.

Máxima: 30.2ºC.
Mínima: 16.2ºC.
Viento fuerte del SSE.

Ahora tenemos el cielo cubierto y 25.3ºC.

Buenas tardes desde Buenos Aires.

Datos propios correspondientes a las 18:00 hs. hora local:

Temperatura: 13,4 C
Humedad: 62 %
Presión: 1015,2 hPa
Viento: leve del S/SE
Cielo: mayormente nublado.

Saludos