beachcp31

Bonjour à tous, Vous êtes cordialement invités à devenir observateur volontaire pour Environnement Canada si vous ne l'êtes pas déjà. Grâce à ce type d'observation, les météorologues peuvent confirmer ou revoir leur diagnostic et émettre des veilles ou alertes de Temps Violent qui serviront à prévenir la population et ainsi assurer la sécurité des biens et personnes. Pour plus de détails, veuillez contacter René Héroux, coordonnateur du Programme de Temps Violent à Environnement Canada, à rene.heroux@ec.gc.ca Il y aura une rencontre fort intéressante pour les observateurs volontaires qui sont inscrits auprès de René Héroux le samedi 15 mai en après-midi. Je vous invite donc à vous inscrire comme observateur volontaire et de participer à cette réunion de début de saison! Christian Pagé

Probablement causé par le soulèvement orographique. Les bases sont-elles élevées? Cela serait probablement le cas vu l'air sec de basses couches.

Les basses couches sont très sèches, il manque d'humidité je crois pour condenser.

Il est trop dangereux pour la sécurité du serveur de permettre les attachements...

Il existe beaucoup de sites qui te permettent de créer ton propre site web gratuitement!

On ne peut pas mettre de pièce jointe. Il faut héberger l'image sur un quelconque site web et mettre l'image avec les codes indiqués dans

20-25 C dans la région de Montréal, 6C à Trois-Rivières...

Petite cellule orageuse sur l'ouest de l'ile de Mtl avec foudre, 01:39 GMT... en développement. 1er orage estival de l'année?

D'autres renseignements sur ce site:

OU SELECTED AS NATIONAL DISTRIBUTION SITE FOR RADAR DATA FOR IMMEDIATE RELEASE CONTACT: OU Public Affairs NORMAN - The Center for Analysis and Prediction of Storms at the University of Oklahoma has been selected as one of three sites in the United States to distribute real time NEXRAD Doppler weather radar data via the Internet, the National Oceanic and Atmospheric Administration announced today. The data will be made available free of charge to academic users and for the cost of delivery to private sector and government users via a new OU organization called Integrated Radar Data Services, or IRaDS. In addition, the National Weather Service Telecommunication Operations Center will make the radar data available through a "Family of Services" approach if sufficient interest exists within the commercial community. "The selection of the University of Oklahoma as one of the three centers in the nation for the distribution of crucial weather data is further evidence of the university's national and international leadership in the field of meteorology," said OU President David L. Boren. "It's a great tribute to the quality of our faculty and students." The distribution of NEXRAD radar data via the Internet was pioneered during the past five years at OU in a project known as the Collaborative Radar Acquisition Field Test, or CRAFT. It involved collaborators from NOAA, including the National Severe Storms Laboratory and Radar Operations Center in Norman, along with the University Corporation for Atmospheric Research's Unidata Program and several private companies. CRAFT initially was funded by a $210,000 seed grant from the State Regents for Higher Education, subsequently generating more than $2.5 million in federal funding for Oklahoma. The highly successful project led the National Weather Service to adopt the novel Internet-based data transmission methodology. Kelvin Droegemeier, Regents' Professor of Meteorology at OU and director of the Center for Analysis and Prediction of Storms, who initiated and directed CRAFT, said, "I'm told that it was one of the most successful public-private partnerships ever in the field of meteorology. Everyone, including private sector competitors, worked for the good of the whole, and the result was a concept that broke down barriers and led to a system that benefits all users of NEXRAD data. "Because of Project CRAFT, entirely new uses of radar data are emerging, bringing added benefits to the public and energizing private industry," he added. "This new system will facilitate ground-breaking advances by a variety of radar data users," observed Tim Crum of the NOAA Radar Operations Center in Norman, adding that CRAFT won the NOAATech2002 award for the best of use of advanced networking technologies. In addition to the many benefits of real time NEXRAD radar data for weather prediction and warning, CRAFT completely changed the way NEXRAD data are archived. Prior to CRAFT, the data were recorded at each radar site on 8mm tapes and mailed to the National Climatic Data Center in Asheville, N.C. Because the tapes were unreliable, the 10-year radar archive was only about 60 percent complete. Furthermore, access to archived data often required weeks or months, especially for large volumes, frequently at significant cost. Today, the NCDC ingests NEXRAD radar data directly from the Internet at a more than 95 percent completion rate, and makes the same data available, free of charge via the Internet, to any user in a matter of minutes. "Project CRAFT was a stellar example of partnering between academia, government and the private sector to demonstrate the value and need of providing real-time NEXRAD data to users," said T.H. Lee Williams, vice president for research and dean of the Graduate College, Norman campus. "OU is particularly pleased that the CAPS IRaDS initiative has been selected by the National Weather Service as one of the top-tier providers for operational NEXRAD Internet-based delivery. IRaDS is a major development in our push to build strong university-government-industry links through the National Weather Center in Norman." Droegemeier said that IRaDS is an important addition to the numerous radar initiatives now under way in Oklahoma, including a $40 million grant from the National Science Foundation to develop small phased-array Doppler radars for cell phone towers. Total funding for this project will be $70 million to $100 million over its formal 10-year lifetime. Another major initiative is the successor to NEXRAD being pioneered by the National Severe Storms Laboratory in partnership with OU. "We hope to add to IRaDS data from radars operated by the FAA and even, possibly, television stations," Droegemeeir said, adding that "IRaDS will assist with economic development in Oklahoma by helping attract private weather companies and creating new public-private partnerships." For more information on IRaDS, visit http://radarservices.org ###

OU SELECTED AS NATIONAL DISTRIBUTION SITE FOR RADAR DATA FOR IMMEDIATE RELEASE CONTACT: OU Public Affairs NORMAN - The Center for Analysis and Prediction of Storms at the University of Oklahoma has been selected as one of three sites in the United States to distribute real time NEXRAD Doppler weather radar data via the Internet, the National Oceanic and Atmospheric Administration announced today. The data will be made available free of charge to academic users and for the cost of delivery to private sector and government users via a new OU organization called Integrated Radar Data Services, or IRaDS. In addition, the National Weather Service Telecommunication Operations Center will make the radar data available through a "Family of Services" approach if sufficient interest exists within the commercial community. "The selection of the University of Oklahoma as one of the three centers in the nation for the distribution of crucial weather data is further evidence of the university's national and international leadership in the field of meteorology," said OU President David L. Boren. "It's a great tribute to the quality of our faculty and students." The distribution of NEXRAD radar data via the Internet was pioneered during the past five years at OU in a project known as the Collaborative Radar Acquisition Field Test, or CRAFT. It involved collaborators from NOAA, including the National Severe Storms Laboratory and Radar Operations Center in Norman, along with the University Corporation for Atmospheric Research's Unidata Program and several private companies. CRAFT initially was funded by a $210,000 seed grant from the State Regents for Higher Education, subsequently generating more than $2.5 million in federal funding for Oklahoma. The highly successful project led the National Weather Service to adopt the novel Internet-based data transmission methodology. Kelvin Droegemeier, Regents' Professor of Meteorology at OU and director of the Center for Analysis and Prediction of Storms, who initiated and directed CRAFT, said, "I'm told that it was one of the most successful public-private partnerships ever in the field of meteorology. Everyone, including private sector competitors, worked for the good of the whole, and the result was a concept that broke down barriers and led to a system that benefits all users of NEXRAD data. "Because of Project CRAFT, entirely new uses of radar data are emerging, bringing added benefits to the public and energizing private industry," he added. "This new system will facilitate ground-breaking advances by a variety of radar data users," observed Tim Crum of the NOAA Radar Operations Center in Norman, adding that CRAFT won the NOAATech2002 award for the best of use of advanced networking technologies. In addition to the many benefits of real time NEXRAD radar data for weather prediction and warning, CRAFT completely changed the way NEXRAD data are archived. Prior to CRAFT, the data were recorded at each radar site on 8mm tapes and mailed to the National Climatic Data Center in Asheville, N.C. Because the tapes were unreliable, the 10-year radar archive was only about 60 percent complete. Furthermore, access to archived data often required weeks or months, especially for large volumes, frequently at significant cost. Today, the NCDC ingests NEXRAD radar data directly from the Internet at a more than 95 percent completion rate, and makes the same data available, free of charge via the Internet, to any user in a matter of minutes. "Project CRAFT was a stellar example of partnering between academia, government and the private sector to demonstrate the value and need of providing real-time NEXRAD data to users," said T.H. Lee Williams, vice president for research and dean of the Graduate College, Norman campus. "OU is particularly pleased that the CAPS IRaDS initiative has been selected by the National Weather Service as one of the top-tier providers for operational NEXRAD Internet-based delivery. IRaDS is a major development in our push to build strong university-government-industry links through the National Weather Center in Norman." Droegemeier said that IRaDS is an important addition to the numerous radar initiatives now under way in Oklahoma, including a $40 million grant from the National Science Foundation to develop small phased-array Doppler radars for cell phone towers. Total funding for this project will be $70 million to $100 million over its formal 10-year lifetime. Another major initiative is the successor to NEXRAD being pioneered by the National Severe Storms Laboratory in partnership with OU. "We hope to add to IRaDS data from radars operated by the FAA and even, possibly, television stations," Droegemeeir said, adding that "IRaDS will assist with economic development in Oklahoma by helping attract private weather companies and creating new public-private partnerships." For more information on IRaDS, visit http://radarservices.org ###

Le modèle européen de 00Z est disponible en plus de la run de 12Z habituelle...

Le modèle européen de 00Z est disponible en plus de la run de 12Z habituelle...

J'abonde en ce sens, ayant travaillé sur des outils diagnostiques des systèmes synoptiques je peux dire que les structures observées rencontrent rarement les théories classiques des fronts, les systèmes dits non-classiques sont plutôt la norme que l'exception (par exemple, pour qu'un front respecte la structure classique, il doit y avoir un maximum d'advection de tourbillon en altitude (300-500hPa), mais on observe fréquemment dans les systèmes maritimes, donc qui touchent la France, des maximum en basse altitude (700 ou même 850 hPa) ce qui donne une structure tridimensionnelle bien différente de ce que la théorie classique des fronts prévoit). Et il n'y a pas de 'bataille' entre l'air chaud et l'air froid ni d'air froid qui pousse l'air chaud. Ce n'est pas si simple si on se référence aux équations de balance non-linéaire qui sont l'extension en beaucoup plus précis de la théorie de l'approximation géostrophique. Christian Pagé

Bonjour! Est-ce que le chat est utilisé? Est-ce qu'il fonctionne bien? Ici à Montréal on aura un peu de neige dimanche soir... peut-être quelques 5 cm après avoir vécu des Tx de 16C lundi passé et -15C lundi de la semaine passée... Christian

Voici quelques photos...

As-tu tenté les différentes options dans les choix : Quelle version voulez-vous utilisez? Version recommandée pour les navigateurs modernes. Elle nécessite le support des Frames et du Javascript. Utilisez cette version si la version précédente ne fonctionne pas. Elle nécessite le support des Frames et du Javascript. Version avec Frames mais sans Javascript. Version pour les WebTV. Version pour les navigateurs texte.

J'ai appliqué un patch et on verra bien si cela corrige les problèmes...

Un chat est disponible à l'adresse ...

Les Iles-de-la-Madeleine ont connu quelques bonnes tempêtes cet hiver. Pour ceux qui sont familiers avec l'archipel, les photos ont été prises à Grande-Entrée...

Ici même sur les pages de prévisions. Exemple pour Montréal: voir dans le bas de la page: Lever du soleil 06:26 Coucher du soleil 17:46 Durée du jour 11:20 La différence de la durée du jour entre demain et aujourd hui est de 3 minutes.

D'autres intéressés pour le chat? Je n'en compte que trois pour le moment: Pilou, Jean-Louis et Luc

Effectivement, j'ai suivi cet épisode neigeux sur vos régions presque en direct grâce à vos messages et superbes photos!! Ici c'est le calme plat, avec journées ensoleillées, quelques journées nuageuses, pas de précipitations, temps doux pour la saison, avec +4C à +7C dans les Tx. Neige compacte glacée au sol, mais une couche d'environ 15-20cm. J'ai eu la chance d'aller une journée en ski alpin à Bromont http://www.skibromont.com/carteski.asp (situé à 45 min. de Montréal) par une journée superbe, avec Tx de -1C, plein soleil! C'était ce vendredi 27 février. Le dénivelé d'environ 385 m. http://people.sca.uqam.ca/page/photospub/bromont_040227.jpg Pour le chat, cela serait possible, mais il y a un désavantage : le contenu est généralement perdu... tandis que sur le forum ici on a probablement plus de messages causé par l'absence de chat, et donc nous avons tout en archive. Mais certains logiciels de chat permettent de garder les échanges, mais cela fait en sorte que le contenu des échanges n'est pas classé comme dans le forum. Mais c'est à vous, usagers du forum et du site, de donner votre avis là-dessus. Ce serait bien possible d'avoir un chat ici-même, j'attends les avis de tous! Christian

Je devrais avoir corrigé le problème. SVP m'informer si il y a d'autres anomalies! Christian Pagé

Peut-être un faible risque de grésil, mais pas de risque de pluie verglaçante selon les discussions d'Environnement Canada. Vents modérés avec un gradient de pression reserré... mais la dépression perdra en intensité tout en se déplaçant vers et sur nos régions.