Consultation de l'archive KELVINA


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Informations générales

KELVINA  Tempête tropicale modérée, saison 1993/1994

Le système KELVINA a été baptisé le 06.03.1994 à 06 UTC, il a atteint le stade de Tempête tropicale modérée.
Le vent soutenu en mer a atteint 93 km/h avec des rafales atteignant 115 km/h.
Une île a été touchée par ce système.



Identité du Système

Date de la cyclogénèse
05.03.1994 à 06 UTC
Zone de la cyclogénèse
Nord-Ouest du bassin (50°/60°E)
Date du baptême
06.03.1994 à 06 UTC
Date de la dissipation
12.03.1994 à 12 UTC
Type de trajectoire
Méridien
Durée de vie
7 Jours
Durée de vie au stade de Dvorak supérieur à 2,5/8,0
3 Jours
Durée de vie au stade tempête
72 Heures
Distance parcourue
2600 km
Vitesse moyenne de déplacement
17.0 km/h, 9 Kt
ZONE DE LA CYCLOLYSE
POLAIRE


Les différents stades atteints par KELVINA


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Stades atteints Date de l'évolution Mention  
Dépression tropicale
05.03.1994 à 00 UTC
La cyclogénèse de Kelvina a eu lieu au large des côtes Nord-Est de Madagascar. L'intensité augmente
Tempête tropicale modérée
07.03.1994 à 06 UTC
L'intensité augmente
Dépression tropicale
10.03.1994 à 06 UTC
L'intensité diminue
Dépression extra-tropicale
11.03.1994 à 12 UTC
Le système s'évacue rapidement vers l'Est-Sud-Est. La dépression extra-tropicale passera à proximité de l'île de la Nouvelle-Amsterdam le 14 mars. L'intensité diminue


Valeurs maximales

Valeurs maximales atteintes par KELVINA, le 08 mars 1994 à 06 UTC  
Intensité sur l'échelle de Dvorak (nombre Ci) 3,0+/8,0
Intensité sur la classification Australienne 1/5
Pression estimée au centre 988 mb
Vent moyen sur 10 mn (donnée Météo-France) 83 Km/h, 45 Kt
Vent moyen sur 1 mn (donnée Météo-France) 93 Km/h, 50 Kt
Vent moyen sur 1 mn (donnée JTWC) 93 Km/h, 50 Kt
Rafales 115 Km/h, 62 Kt
Vent moyen sur 1 mn (intensité atteinte la plus probable) 93 Km/h, 50 Kt


Tableau de l'impact du système sur une île


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Île
Distance et intensité correspondante
Date
Alerte
Réunion 320 km à l'Ouest, au stade de tempête tropicale modérée (S'intensifiant) Du 08 au 10.03.1994 Aucune
 

Conclusion

Malgré une intensité modeste, et une distance relativement élevée par rapport à la Réunion, l'île fût bien arrosée sous les larges bandes très convectives que Kelvina a engendré.



Images du système


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Trajectoire de Kelvina
Source : Firinga le site
Kelvina, le 08 mars 1994 à 03:35 UTC
Source : Image Noaa
Kelvina - Le 09 mars 1994 à 13:40 UTC
Source : Image provenant de Météo-France Réunion

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