October 26, 2012

Sandy - update

Looks like a big one -- from the NOAA Hydrometeorological Prediction Center:
EXTENDED FORECAST DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER COLLEGE PARK MD
226 PM EDT FRI OCT 26 2012

VALID 12Z MON OCT 29 2012 - 12Z FRI NOV 02 2012

...DANGEROUS HURRICANE/POST-TROPICAL CYCLONE SANDY IS LIKELY TO SPREAD HIGH WINDS/HEAVY RAINS AND INTERIOR HEAVY SNOWS FROM THE CAROLINAS AND CENTRAL APPALACHIANS NORTHWARD INTO CANADA...

GENERAL FLOW PATTERN

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A RETROGRADING POSITIVE ANOMALY MOVING FROM SOUTHERN GREENLAND INTO NORTHERN QUEBEC FAVORS A QUASI-STATIONARY DEEP CYCLONE NEAR THE NORTHEAST, IN THIS CASE HURRICANE SANDY AND ITS POST-TROPICAL REMAINS. OTHERWISE...RIDGING IS GENERAL EXPECTED OUT WEST...THOUGH FLOW ACROSS THE PACIFIC IS EXPECTED TO SEND AMPLE ENERGY/HEAVY PRECIPITATION ACROSS THE NORTHWEST. GUIDANCE IS IN EXCELLENT AGREEMENT ON THE GENERAL FLOW PATTERN, THOUGH ISSUES REMAIN WITH SANDY'S FUTURE COURSE AND STRENGTH.
Those on the East Coast have a couple days but do be proactive. This may well be a 100-year storm -- numbers are looking that way... Posted by DaveH at October 26, 2012 9:03 PM
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