Las bacterias hacen llover
29/ 02/ 2008 at 7:19 | In Granizo, Meteorología | Leave a CommentHasta ahora se sabía que algunas bacterias que flotan en la atmósfera provocan la lluvia bajo ciertas condiciones y en alguna áreas, pero un equipo de científicos ha demostrado su presencia en todo el mundo y su importancia en el clima. Continue reading Las bacterias hacen llover…
Nuevo artículo sobre megacriometeoros
26/ 02/ 2008 at 8:03 | In General, megacriometeoros | 1 CommentSe ha publicado en la Journal of Environmental Monitoring un nuevo artículo sobre megacriometeoros. Se trata de Monitoring the fall of large atmospheric ice conglomerations: a multianalytical approach to the study of the Mejorada del Campo megacryometeor (DOI: 10.1039/b718785h), que puede leerse aquí. Continue reading Nuevo artículo sobre megacriometeoros…
Ice from plane almost hits woman
11/ 02/ 2008 at 7:55 | In Casuística, Hielo azul | 1 Comment
Wade Liknes holds up a bag full of ice that allegedly fell off a plane, crashed through the roof of his house narrowly missing his wife who was sitting on her bed talking on the phone. The ice passed through the shingles, plywood and drywall and left a hole about a 12 inches in diameter. (SUN MEDIA/Jim Wells
February 8, 2008. Ice from a plane, possibly from a toilet, plummeted to earth and punched through the roof of a southeast Calgary house yesterday, narrowly missing a woman who was in the home.
Marian Liknes said she had just entered her bedroom to answer the phone shortly before 9:30 a.m., when a massive chunk of ice crashed through the ceiling with a deafening blast, mere centimetres from where she was sitting.
“I thought it was a gunshot at first and I ducked, I ducked down and I was scared, I was really scared,” said Marian.
“Then I got a bit hysterical, crying and shaking.
“Two feet over and it could’ve killed me … the police said it would’ve killed me.”
The frozen missile punched through roof shingles, wood, insulation and drywall with explosive force, leaving a half-metre hole in the house, located on Riverbend Dr. S.E. — and the bedroom littered with debris and ice, said the grandmother of four.
Marian was struck by flying shards of ice, which at the time she thought was glass.
She ran for cover, ducking into the couple’s ensuite bathroom.
“I peeked out and there was this huge hole in the ceiling … and there was ice everywhere and this huge chunk of ice on my bed, about two feet from me.
“Two hours earlier, my husband would’ve been lying on the bed.”
The couple lives under the approach path for Runway 34 of the Calgary International Airport and are accustomed to seeing jets above them, said Marian’s husband Wade.
“Some days you can see them stacked up one right behind the other,” he said.
“So, it’s not unusual to see planes coming in, but it is unusual to have stuff fall off of them.”
The Transportation Safety Board of Canada is gathering information on the incident, but is not clear what kind of plane or which airline was involved.
Although the safety board has not officially determined the cause of the incident, investigators believe it was likely frozen waste water from an airplane’s toilet system, said board spokesman Johnathan Lee.
In the past, O-ring valves — used to drain planes’ toilet water — have leaked while in flight, prompting the water to freeze to the outside of the fuselage and dislodging in the form of an ice chunk when the aircraft drops in elevation, he said.
“These kinds of occurrences are rare, but not unheard of,” said Lee, adding this is the first such incident in the Calgary area in at least nine years.
Fuente: <http://cnews.canoe.ca/CNEWS/WeirdNews/2008/02/08/4834572-sun.html>
También: <http://www.canada.com/story.html?id=27df081f-aec2-4dca-97dd-e1b05b5ed1a6>
Huge ice chunk lands on Columbia roof
11/ 02/ 2008 at 7:49 | In Casuística | Leave a CommentPosted: Jan 18, 2008 12:46 AM
Updated: Jan 23, 2008 05:33 AM
WEST COLUMBIA, SC (WIS) – One West Columbia family thought the sky was falling when a big ice chunk fell on their house. And it may not have been from mother nature.
“My husband flew down the steps and we just were like, ‘what was that noise?’ And my husband said, ‘did a car or something hit the house?’ And I said, ‘no it came from the roof.’ ‘Did the bookshelves fall? Did the attic cave in?’” recalls Nora Drabb.
Sunday afternoon Nora Drabb was in her kitchen preparing dinner for her family. That’s when she says they heard a noise she’s never heard before.
“It was very loud! It was so loud,” she says. “That’s when I thought something fell off an airplane. Did a wing fall off an airplane? It was so loud. Then if a wing fell off an airplane is it now going to crash somewhere?”
She says her nephew looked out the window and saw white debris falling off the side of the roof.
“And when we ran outside there was a piece of ice. The biggest ice was the size of a basketball or volleyball. And when it hit the roof it just exploded all over the back yard,” she says.
Nora says the crashing noise was a big ice chunk crashing on her roof. But why did a ice chunk fall mysteriously from the sky?
Nora and her family live less than three miles from the Columbia airport.
“If it was a plane, in fact, then it wasn’t close because we hear them fly over our house all the time and we heard nothing,” she says.
This may sound like an isolated incident, but the Federal Aviation Administration says they have investigated cases like this before.
The FAA says a bad valve in a plane’s lavatory has been known to leak. For now Nora is playing it safe, in case anything else decides to mysteriously fall from the sky.
“I’m afraid to let my kids go in the backyard because if they would have been out there somebody would have got hurt,” she says.
Reported by Fay Taylor
Posted by Logan Smith
Fuente: <http://www.wistv.com/Global/story.asp?S=7738193&nav=menu36_3>
Ice from plane flattens shed
11/ 01/ 2008 at 5:06 | In Casuística, Daños, Hielo azul, Materiales | Leave a CommentBy TOM WELLS
Published: 11 Jan 2008
STUNNED Lloyd Gater had his garden shed demolished – by a block of ice from a plane’s toilet.
Lloyd, 32, feared Armageddon when he heard an ear-splitting crash as he sat down to dinner with his family.
He ran into the garden to find the shed in ruins, and a chunk of ice the size of a television set embedded in the wreckage. Continue reading Ice from plane flattens shed…
Gran bola de hielo cayó en La Rioja (Argentina)
1/ 01/ 2008 at 5:21 | In Casuística, Hielo azul | Leave a CommentCae en del cielo una bola de hielo del tamaño de una sandía y nadie sabe por qué.
Vecinos de la capital riojana se vieron sorprendidos el viernes 9 de Noviembre de 2007, cuando una bola de hielo del tamaño de una pelota de basquet cayó desde el cielo, en un fenómeno que no puede ser explicado certeramente por los meteorólogos.
El hecho fue presenciado por empleados de la empresa Aquapark, en la zona este de la ciudad de La Rioja.
En tanto, el meteorólogo Joaquín Martín no pudo explicar el fenómeno, aunque especialistas aeronáuticos no descartaron que se trate de una composición química que eliminan los aviones de pasajeros como desecho.
El insólito hecho se registró durante la mañana del viernes y, según comentaron los testigos a la radio local Fénix, la “bola de hielo” cayó en un terreno colindante a la empresa Aquapark.
Según aseguraron los empleados de esa firma, el tamaño del objeto es aproximado de 50 a 60 centímetros de diámetro, comparable a la dimensión de una pelota de basquet.
Al impactar contra la superficie, la bola de hielo se partió en varios pedazos y los restos se dispersaron en un radio de 3 a 4 metros.
Fuentes: Diario de Necochea (11/11/2007), Minuto Uno (10/11/2007), Blog S.I.O. (1ª quincena 12/2007).
Hidroaerolitos en NewScientist
29/ 12/ 2007 at 6:15 | In General, megacriometeoros | 2 CommentsEl número 2.653 de la revista americana New Scientist (23/12/2007) incluye en sus páginas 48 a 50 un artículo acerca de la situación actual de la polémica sobre los megacriometeoros y de las tesis de Jesús Martínez-Frías, que cada vez reciben menores apoyos en la comunidad científica. Continue reading Hidroaerolitos en NewScientist…
Fuerte granizada colapsa el tráfico en Bogotá e inunda vastos sectores
5/ 11/ 2007 at 3:28 | In Granizo, Meteorología | Leave a CommentBogotá, 3 nov (EFE).- Una fuerte granizada acompañada por un intenso aguacero, uno de los más fuertes de este año, afectó hoy después del mediodía local vastos sectores de Bogotá, fenómenos que colapsaron el tránsito de vehículos e inundaron algunas zonas.

Las situaciones de emergencia más graves se produjeron en calles, avenidas y barrios del centro, el oeste, el sur y el norte bogotano.
El granizo taponó las alcantarillas de muchas calles y sifones en las casas de esos sectores.
Las distintas estaciones de bomberos de la ciudad así como los servicios de acueducto y alcantarillado recibieron innumerables llamadas en busca de atención para desfogar los desagües.
Este año las fuertes lluvias en Colombia han causado la muerte a más de 90 personas mientras cerca de 800.000 han resultado damnificadas y cerca de 2.200 casas destruidas así como han resultado anegadas miles de hectáreas que han hecho perder cosechas y animales de corral y de pastoreo.El Instituto de Estudios Ambientales (Ideam) ha advertido que las lluvias se prolongarán hasta fines de diciembre, e incluso hasta enero debido al fenómeno de La Niña.
En el último mes al menos trece personas han muerto y unas 120.000 han resultado damnificadas por las inundaciones, la salida de cauce de numerosos ríos y los deslizamientos.
La Dirección de Atención y Prevención de Desastres (DAPD) señaló el viernes que las precipitaciones han causado estragos especialmente en más de 400 municipios de los 1.099 del país en 29 de los 32 departamentos.
Entre jueves y viernes se reportaron 10.000 personas con sus casas inundadas por los aguaceros.
Página sobre el granizo
25/ 08/ 2007 at 1:39 | In Granizo, Meteorología | Leave a CommentEn http://www.chaseday.com/hail.htm tenéis información e imágenes sobre tormentas de granizo.
Granizada en Northfield (Minnesota)
24/ 08/ 2007 at 1:35 | In Daños, Granizo, Materiales, Meteorología | Leave a Comment
Hace un año, el 24 de agosto de 2006, la localidad de Northfield (Minnesota, EE.UU.) padeció una enorme granizada que causó múltiples daños materiales (para más información: http://northfield.org/node/1997). Sus ciudadanos colaboraron para crear una galería de imágenes en Flickr que documenta muy bien los terribles efectos de una tormenta de este tipo.
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