Des élections US un jour de tempête ?


121030_uq54r_eau-pont-newyork_g.jpgLes météorologues n'excluent pas la formation d'une autre tempête dans l'océan Atlantique, dont l'arrivée dans l'Est américain va coïncider avec l'élection présidentielle, ainsi que compliquera le travail de reconstruction après l'ouragan «Sandy», indique la chaîne de télévision Current TV. 

Selon les experts, dans la nuit du 6 novembre, où se déroulera l'élection présidentielle américaine, une zone de basse pression pourrait se former dans l'océan Atlantique. Un tel phénomène atmosphérique pourrait causer des vents forts, des pluies et même des tempêtes de neige pendant la journée dans les États du nord-est des États-Unis. 

 

 

Sources: http://www.hpc.ncep.noaa.gov/discussions/hpcdiscussions.php?disc=pmdepd&version=6&fmt=reg et Voix dela Russie

 

 EXTENDED FORECAST DISCUSSION NWS HYDROMETEOROLOGICAL PREDICTION CENTER COLLEGE PARK MD 322 PM EDT THU NOV 01 2012 VALID 12Z SUN NOV 04 2012 - 12Z THU NOV 08 2012 ...NOR'EASTER POSSIBLE FOR MID-ATLANTIC/NEW ENGLAND STATES BY ELECTION DAY INTO NEXT THURSDAY... GENERAL FLOW PATTERN/MODEL PREFERENCE ===================================== A DEEP CYCLONE DROPPING DOWN THE WEST COAST OF CANADA WILL HELP AMPLIFY A MID-UPPER LEVEL RIDGE OVER THE WRN US AND MAINTAIN A NEGATIVELY-TILTED TROUGH FROM THE GREAT LAKES INTO THE APPALACHIANS AND SERN US. THE GUIDANCE AGREES ON THESE IDEA. PRELIM HPC MEDIUM RANGE SURFACE PRESSURES/FRONTS AND 500 MB PROGS WERE PRIMARILY DERIVED FROM A BLEND OF THE 00 UTC ECMWF/UKMET AND GFS/ECMWF ENSEMBLE MEANS THROUGH TUESDAY BEFORE SWITCHING TO A BLEND OF THE 00 UTC ECMWF WITH 00 UTC GFS/ECMWF ENSEMBLES THEREAFTER. THAT SOLUTION MAINTAINED REASONABLE CONTINUITY AND UTILIZED GUIDANCE THAT OFFERED MAX SOLUTION CLUSTERING. HPC FINAL PROGS THOUGH HAVE BEEN MANUALLY ADJUSTED TO ACCOUNT FOR 12 UTC MODEL TRENDS TOWARD DIGGING ADDITIONAL REINFORCING ENERGY INTO AN AMPLIFYING BASE OF THE MID-UPPER LEVEL TROUGH INTO THE SERN US TUE...OPENING THE DOOR MORE TO LINK DEEPER COASTAL LOW EMPHASIS TO TRAILING ENERGY EMERGENCE OFF THE EASY COAST MORE INTO WED/THU. THIS TREND SEEMS REASONABLE CONSIDERING UPSTREAM RIDGE AMPLITUDE. WEATHER IMPACTS =============== AS A DEEP CYCLONE MOVES DOWN THE WEST COAST OF CANADA...PACIFIC MOISTURE FEEDS INTO THE NORTHWEST WHICH ALLOWS FOR SKIRMISHES OF RAINS/HIGH ELEVATION SNOWS THROUGH MUCH OF THE PERIOD. A FEW BATCHES OF LIGHTER PRECIPITATION ARE MEANWHILE EXPECTED TO STREAK THROUGH THE MIDWEST NEXT WEEK AS ENERGY DIGS IN BEHIND THE NEGATIVELY TILTED TROUGH. SHORTWAVES MOVING THROUGH THE SOUTHEAST SUNDAY INTO TUESDAY ARE EXPECTED TO CAUSE LIGHT TO MODERATE PRECIPITATION ACROSS THAT REGION OF THE COUNTRY. GUIDANCE STILL HAVE TIMING/EMPHASIS ISSUES BUT NOW BETTER AGREE THAT DEEPER COASTAL LOW DEVELOPMENT IS MORE LIKELY TO OCCUR LATER TUE INTO THU AS A FRONTAL WAVE OFF THE SOUTHEAST MOVES SLOWLY OFFSHORE AND UP OFF THE EAST COAST. THIS WOULD BRING BEST ORGANIZED RAINS FROM THE ERN MID-ATLANTIC TO ERN NEW ENGLAND. A TRACK IN THIS VEIN OFFERS POTENTIAL FOR HEAVY SNOWS ACROSS INTERIOR NEW ENGLAND WEDNESDAY/THURSDAY AS THE LOW WRAPS INLAND. INCREASING WINDS ALONG COASTAL NEW ENGLAND AND COASTAL MID-ATLANTIC STATES TUESDAY ONWARD MAY LEAD TO SOME COASTAL FLOODING AND BEACH EROSION. ROTH/SCHICHTEL  

Tag(s) : #Terre et climat
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