meteomarc

Ici a Granby ca fait un peu plus d'une heure qu'il neige...sauf que c'est fondant le sol est trop mouillé...mais je prévois me réveiller avec un petit tapis blanc !

MM prévoit toutefois 15-25 cm de neige sur la beauce eet l'estrie!

En effet Meso...Pour Granby, EC dit une dizaine de cm...MM ne mentionne même plus la neige si ce n'est que quelques flocons fondants...Bizzares vu qu'on se trouve dans le début des précipitations...

Meteomedia et EC semblent se plier a l'idée de la neige...du moins pour une partie de la montérégie...pour demain soir MM prévoit un mélange a part égale pour ma ville(Granby)et carrément de la pluie pour Montreal et Sherbrooke... N-B: Ceci ne comporte pas les prévisions pour la nuit...

Patito concernant ta carte sur les types de précipitaions...je ne comprend pas qu'il n'y ait pas de zone de mélange entre la zone de pluie et celle de neige...

J'ai une question comme ca...Disons que Wilma est une tempête tropicale lors de sa fusion avec Alpha...est-ce que une combinaison comme celle-la pourrait ramener Wilma a la catégorie 1?

Regardez le MRF...il semble remonter Wilma sur le maine!

Eh bien qui aurait pu dire il ya quelques jours que deux tempetes tropicales allaient se fusionner et que lon aurait peut-etre droit a une tempete de neige mardi soir!?!...La meteo est bien capricieuse par moment...et cest ce qui fait quelle est si plaisante a prevoir!

Ca y'est cette apres-midi cette dépression est maintenant tropicale et devrait devenir une tempete tropicale d'ic cette nuit! Alpha s'en vient!

Je lisais sur Accuweather que cette tropical wave donnait des rafales de 35 mph et plus a beaucoup d'endroits dans les antilles...Et cette vague est assez imposante...donc en effet ca regarde bien pour alpha!

Le NHC prévoit que Wilma aura des vents de 165 mph quand elle touchera terre! Si Stan a réussit a ravager le Mexique...Alors que cet ouragan n'en était en fait pas un(tempête tropicale kan elle a toucher la péninsule si je me souviens bien)...Imaginez ce que ferait un ouragan de catégorie 5 comme dommage! CA-TA-STRO-PHIQUE!!!

A 5 heures ce soir wilma semble se réintensifier...elle ki est maintenant ouragan de catégorie 4...avec des vents soutenus de 150 mph...si je dis vrai ca serait catastrophique car elle se réintensifierait juste su le bord des côtes du yucatan...

Hey Hailstorm jai un autre record a ajouter a tout ca...Wilma est l'ouragan, dans tout lhistoire de latlantique, dont l'intensification a été la plus rapide!...tout ça c'est fou on est a la mi-octobre!!!

Les premiers flocons moi je les voient plutot entre le 22 et le 26 octobre, les températures de nuit permettront les flocons et entre ces dates on annonce des précipitation avec des températures de jour entre 5 et 10 et de nuit de 0 environ.

As of 5:00 PM EDT Wednesday, Rita is packing sustained winds of 165 mph with gusts to 185 mph; this makes Rita a category 5 hurricane. This is the season's second catastrophic hurricane. As of 5:00 PM EDT, Rita was centered near 24.4 north and 86.8 west. This places Rita 700 miles east-southeast of Corpus Christi, or 600 miles east southeast of Galveston Texas. The minimum central pressure has fallen to 914 millibars (26.99 inches of mercury). Rita was moving to the west at 13 mph. Hurricane-force winds extend outward up to 70 miles, and tropical storm-force winds extend outward up to 175 miles from the center of circulation. Given that Rita will continue to intensify the wind field will probably expand further over the next 24 hours Patito je ne crois pas que Rita restera catégorie 5 jusqu'a toucher terre...louragan est présentement dans la partie la plus propice au dévellopement et plus elle se rapprochera de la cote, plus elle diminura en intensité...sensiblement la meme chose qui est arriver a katrina.

Hurricane Rita will gain strength when she passes through the Florida Straits Tuesday and Wednesday. The storm's first target will be the Florida Keys where there will be massive waves, torrential rain and deafening winds. During midweek, the storm will enter the virgin waters of the central Gulf of Mexico where sea surface temperatures are at 85 degrees or higher. That will provide the storm with all the energy it needs to become a category 4 hurricane if she hasn't done so already. Joe Bastardi, one of AccuWeather's hurricane experts, made the comment that the storm could explosively develop and be a category 3 hurricane by the time it passes Key West Tuesday night. After the Keys, the next target will be the western Gulf Coast. The storm is still over 1200 miles away from that area, so we cannot provide precise information about that landfall just yet. Just know it is going to occur somewhere between northern Mexico and southwestern Louisiana late this week, and wherever it happens the situation will be serious.

Noaa et accuweather prévoient pour le moment que Rita deviendra un ouragan majeur assez rapidement, même que l'ouragan serait déja catégorie 2 dans les keys!...elle est présentement en dévellopement assez rapide et atteignera le seuil d'ouragan ce soir!...Pourrait-elle devenir même plus forte que Katrina étant donné le faite qu'elle sera plus forte en entrant dans le golfe et qu'elle aurait les conditions assez semblables a celles de Katrina?...En tout cas pour l'instant la tempête tropicale semble destinée a atterir entre le nord du mexique et la louisiane(oui le risque est la )...tk situation assez intéressante et apeurante pour les gens des keys et du golfe!

tk ici ya plu en modit ajd!!!!...sur météoalerte a 14 heures pres dici il y avait 86 mm déja!!!!

Le centre de l'ouragan était, a 4 heures PM, a 90.2 KPA...p-e que maintenant le centre est de 90KPA

WOW regarder l'oeil!!!!!!! hurricane warning is now in effect from Morgan City, La., to the Alabama-Florida state line. A hurricane watch and tropical storm warning is in effect from east of the Alabama-Florida state line eastward to Destin, Fla., and from west of Morgan City to Intracoastal City, La. A tropical storm warning is in effect from Destin, Fla., eastward to Indian Pass, Fla., and from Intracoastal City, La., westward to Cameron, La. Hurricane Katrina, as of 10 a.m. CDT, was centered near 26.0 north and 88.1 west. This is about 225 miles south-southeast of the mouth of the Mississippi River or 300 south-southeast of New Orleans. Maximum sustained winds were 175 mph with gusts to 210 mph. Katrina is moving west-northwest at about 12 mph and has a minimum central pressure of 907 mb, or 26.78 inches. Tropical storm-force winds extend outward up to 205 miles from the storm's center, while hurricane force winds have a radius of 105 miles. Katrina is now moving west-northwestward and will eventually take a track to a more northerly direction later today and tonight that will cause the powerful hurricane to take aim on the north-central Gulf Coast. Katrina is a Category 5 hurricane. It continues to strengthen as its central pressure falls. Satellite pictures indicate a well developed eye. The hurricane should track across a deep and warm layer of water over the central Gulf; and with little to no upper-level wind shear across the entire Gulf, further intensification will occur before making landfall Monday morning. The track of and the second landfall for Katrina depends on a continued weakening of an upper ridge of high pressure over the Southeast, a digging upper-level trough of low pressure over the Midwest and a building ridge of high pressure east of Florida. These three factors will combine to steer Katrina on a northwest and eventually northerly track Sunday into Monday morning. The most recent computer models show a consensus track over southeastern Louisiana. Our latest thinking is that Katrina will make landfall near noon Monday over extreme southeastern Louisiana. Conditions will begin to deteriorate later Sunday, well in advance of the storm, with tropical storm-force winds reaching the coast late Sunday and hurricane-force winds reaching the coast Monday morning. The winds will be strong enough to down not only trees and power lines but also bring down structures and make missiles out of objects that are not tied down. As the storm nears the coast Monday, a devastating storm surge will be pushed into the lower Mississippi Delta as the powerful southeasterly winds pile water into the area. The storm will also bring flooding rain well inland and the risk for tornadoes north and east of the path of the center.

Wais en tout cas Katrina est devenu cette nuit un monstre de catégorie 3, et s'interensifira encore jusqu'a au moins catégorie 4! Discussion Accuweather: A hurricane watch is now in effect for the southeastern coast of Louisiana east of Morgan City to the mouth of the Pearl River, including metropolitan New Orleans and Lake Pontchartrain. A hurricane watch will likely be issued later today for other portions of the northern Gulf Coast. Tropical storm warning for West of Key West to the Dry Tortugas. Hurricane Katrina was centered near 24.5 north and 85.4 west as of 2:00 p.m. EDT Saturday. This is about 390 miles southeast of the mouth of the Mississippi River. Maximum sustained winds are near 115 mph with gusts to 140 mph, making Katrina a Category 3 hurricane. Katrina is moving west at about 7 mph. The minimum central pressure remains at 949 mb, or 28.82 inches. Tropical-storm-force winds extend outward up to 150 miles from the storm's center, while hurricane force winds have a radius of nearly 40 miles. MAXIMUM WIND GUST REPORTS IN SOUTH FLORIDA FROM KATRINA: MIAMI/TAMIAMI, FLORIDA: 81 MPH MIAMI, FLORIDA: 78 MPH FORT LAUDERDALE, FLORIDA: 68 MPH BOCA RATON, FLORIDA: 65 MPH PORT EVERGLADES, FLORIDA: 92 MPH KEY WEST, FLORIDA: 74 MPH DRY TORTUGAS: 81 with a gust to 105 MPH RAINFALL THROUGHOUT THE STORM ENDING 11 A.M. SATURDAY: HOMESTEAD, FLORIDA: 13.62" KEY WEST, FLORIDA: 9.91", MARATHON, FLORIDA: 7.89" While Katrina remains on a westerly track, a bend to the right may begin to occur later Saturday or Saturday night and a more to the northwest on Sunday, in the general direction of the central Gulf Coast. The storm's movement is being caused by an upper-level high pressure area centered over the southeast US. This high pressure ridge will split, with one part sliding westward and the other becoming a stronger extension of the Atlantic high. Weakness will result in the upper-level wind flow over the central Gulf of Mexico Saturday and Sunday, and Katrina will be driven poleward into that weakness. Katrina remains a Category 3 hurricane and is appears to be going through eye wall replacement as minimum pressure has risen since Saturday morning. It has an outer eye wall at 50 miles in diameter and an inner eye wall that is in the process of reforming. We should see another drop in pressure later Saturday as the inner eye wall becomes better organized. Further intensification is likely, and Katrina should be a Category 4 hurricane by Saturday night or early Sunday, and could even reach Category 5 intensity. The hurricane will be moving into an area of very warm and deep waters and upper level wind shear will be low during Saturday and Sunday. The track and future second landfall for Katrina depends on how quickly the upper level high splits over the Southeast and how strong the upper level trough coming in from the northwest digs southwest. The most recent computer models show a consensus track over southeast Louisiana. One concern is that if the upper ridge remains stronger than expected then Katrina would continue on a westerly track longer and the overall track would shift to the west. Our latest thinking is that Katrina will make landfall Monday afternoon over extreme southeastern Louisiana. Conditions will begin to deteriorate later Sunday, well in advance of the storm, with tropical storm force winds reaching the coast later Sunday night and hurricane force winds reaching the coast later Monday morning or early Monday afternoon. In addition to the winds, which will be strong enough to down not only trees and power lines, but also bring down structures and make missiles out of debris. As the storm nears the coast Monday, a devastating storm surge will be pushed into the lower Mississippi Delta as the powerful southeasterly winds pile water into the area. The storm will also bring flooding rains well inland, and the risk for tornadoes north and east of the path of the center. Elsewhere in the tropics Saturday, a tropical wave along 39 west, south of 18 north, is moving west at 10-15 knots. A tropical low pressure system is now located near 20 north and 51 west; this is in an area with too much shear for development now, but as the shear weakens over the next 24-48 hours, the low could become a tropical depression. This low is moving northwest at 10 knots; no threat to land in the immediate future. Another tropical wave along 88 west, south of 19 north, is moving west at 15 knots.

Les gens de Accuweather semble très optimistes à propos des orages cette fin de semaine et parlent même de bons orages pour le Sud-est du Québec de Montréal vers l'estrie et la beauce et allant jusqu'à la côte nord-est américaine ... Much cooler and less humid air pushing into the Great Lakes will clash with hot and humid air along the East Coast later in the weekend, resulting in strong thunderstorms. Thunderstorms will push into the northern Appalachians Saturday night, then reach the coast by Sunday. Thunderstorms could produce wind gusts in excess of 55 mph as the stronger jet stream winds advance into the region.

ca commence ici a granby jentend le tonnerre et la pluie tombe il est 3h30

Wow méchante cellule du coté de London...Une bonne cellue vers Hemmingford se raprochant de St-Jean et une autre en Outaouais...Mais le gros de l'action est en Ontarion pratiqement tout les secteurs du sud sont en alerte !!!

Arretez donc detre pessimiste...si on a a pas ben tant pis mais sinon moi je reste confiant le front froid n'est pas encore passé et un redévellopement est possible meme si pour linstant le front génere surtout des averses...