CIMSS BLOG

Subiré algunos reportajes (links e imágenes), que hace este Blog, que como dice su título (CIMSS Satellite Blog: A weblog of meteorological satellite imagery relevant to current weather events), están basados en imágenes satelitales de eventos meteorológicos presentes.


1º- Ojo de EARL, en 30 de agosto:

http://cimss.ssec.wisc.edu/goes/blog/archives/6538

Interesante blog 

2º- Low Level OutFlow Boundary de EARL:

- Ayer estaba haciendo esta animación de EARL y observé como cierta nubosidad salía disparada por su flanco Oeste, directa a las Antillas Mayores y recorriendo bastantes kilómetros a gran velocidad:





- Hoy veo esta nueva entrada en el CIMSS Blog comentando los mecanismos que ha dado lugar a este Outflow Boundary (Frontera de Flujo saliente), explicado por la combinación de aire seco en niveles de la troposfera media en asociación con cizalladura del Oeste, que en conjunto erosionaron la cubierta nubosa de EARL en su lado oeste

Evidence of a large region of mid-tropospheric dry air on AWIPS images of GOES-13 6.5 µm “water vapor channel” data (above; also available as a QuickTime movie) in tandem with an increase in southwesterly deep layer wind shear was helping to erode the upper level cloud canopy over the western portion of Category 4 Hurricane Earl — this allowed a well defined low-level outflow boundary to be seen on McIDAS images of GOES-13 0.63 µm visible channel data (below; also available as a QuickTime movie) on 31 August 2010.

- Interesante la apariencia de las bandas nubosas como "ondas de choque", saliendo disparadas hascia el Oeste:

It is also interesting to note the westward-propagating “shock waves” that were emanating from Hurricane Earl, which could be seen on the water vapor imagery in the dry region (denoted by the predominantly yellow color enhancement) over the western Atlantic Ocean.







- Más y sobre el nivel de la capa de nubes en:

http://cimss.ssec.wisc.edu/goes/blog/archives/6560

Hace tiempo que sigo este blog, y como complemento a la excelente información de Parungo, me gustaría comentar que no solo se incluyen imágenes sobre huracanes, sino que también aparecen estudios interesantes sobre otros fenómenos, como la granizada del 23 de Julio en Dakota del Sur, un tornado F4 el 26 de Julio en Montana, o una tormenta severa en Arizona el 17 de Agosto, por poner algunos ejemplos recientes.

Sin duda, una fuente recomendable, no solo para la meteorología tropical.

Saludos

Excelente página y excelentes ejemplos.... A favoritos.
Gracias

3º Huracán IGOR; Super Rapid Scan Operations (SRSO) imagery.

http://cimss.ssec.wisc.edu/goes/blog/archives/6790

4º Strong jet stream over the eastern North Pacific Ocean.

http://cimss.ssec.wisc.edu/goes/blog/archives/6887

Brutal la curvatura del Jet sobre el Pacífico...






A destacar como los modelos subestiman la fuerza de estos vientos:


Real  216 knots

ECMWF Low-Resolution model forecast             140 knots
CRAS45 and the CMC Low-Resolution models   150 knots
GFS90 and the UKMET models                               160 knots





Pd:

Penúltima entrada del Blog

5º Powerful Great Lakes Cyclone

Nuevo record de Presión más baja en el CONUS, debido a un An unusually large and strong mid-latitude cyclone rapidly intensified over the western Great Lakes region on 26 October 2010.





Dejo estos datos y el enlace:

Link

One notable aspect of this storm is that it set new all-time lowest barometric pressure readings for the states of Wisconsin and Minnesota (which were the equivalent to those that would be seen in a Category 3 hurricane):

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
1227 PM CDT WED OCT 27 2010

…LOW PRESSURE RECORDS BROKEN ON OCTOBER 26 2010…

THIS IS A PRELIMINARY STATEMENT ON THESE PRESSURE RECORDS. HERE IS WHAT WE KNOW SO FAR ABOUT THE LOW PRESSURE RECORDS SET ON OCTOBER 26TH:

A FEW OF THE RECORDS HAVE BEEN RECALCULATED TO ADJUST FOR TRUE MEAN SEA LEVEL PRESSURE. SOME OF THE PREVIOUS VALUES WERE CALCULATED USING A STANDARD ATMOSPHERE ASSUMPTION /THE ALTIMETER SETTING AT THE STATION/. THE VALUES IN MILLIBARS ARE THE ONES THAT WILL BE MORE EXACT.

AN UNUSUALLY INTENSE LOW AFFECTED THE STATE OF MINNESOTA. AT 513 PM CDT…THE AUTOMATED WEATHER OBSERVING SYSTEM AT BIGFORK MINNESOTA RECORDED A 955.2 MILLIBAR /28.21 INCHES/ PRESSURE. THIS BREAKS THE ALL TIME MINNESOTA STATE RECORD FOR THE LOWEST OBSERVED PRESSURE.

THE PREVIOUS RECORD WAS 962.7 MB SET ON NOVEMBER 10 1998 AT ALBERT LEA AND AUSTIN IN SOUTHERN MINNESOTA. THE RECORD WAS INITIALLY BROKEN SHORTLY AFTER 10 AM AS THE LOW PASSED BY AITKIN MINNESOTA. HOWEVER…THE LOW CONTINUED TO INTENSIFY INTO THE AFTERNOON OVER NORTH CENTRAL MINNESOTA WHERE THE RECORD PRESSURE READING WAS ULTIMATELY ESTABLISHED AT BIGFORK.

Llevaba tiempo sin actualizar ninguna entrada y aprovecho esta animación del pasado 3 de febrero cuando se produjo la ola de frío en el NNE del CONUS.





Y para lo que les gusta el inglés, el pie de página:


In the aftermath of the winter storm, a comparison of MODIS true color and false color images from the SSEC MODIS Today site (above) showed extensive snow cover across the Upper Midwest region, along with ice forming in parts of Lake Michigan, Lake Huron, and most of Lake Erie (snow and ice appear as shades of cyan on the MODIS false color image, in contrast to supercooled water droplet clouds which are brighter white features). In fact, some movement of the ice features in the Great Lakes could be seen — especially in Lake Erie –  in a comparison of MODIS false color images from the Terra satellite overpass at 16:03 UTC and the Aqua overpass at 19:23 UTC (below), due to brisk southwesterly surface winds across the region.