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HURRICANE EARL SUMMARY

HURRICANE EARL SUMMARY. UPDATED SEPTEMBER 3, 2010 8:00 AM. Hurricane Earl – 6:15 AM. HURRICANE EARL PROJECTION. Earl will likely pass 50 to 100 miles southeast of Nantucket around midnight tonight Probably as a Category 1 hurricane

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HURRICANE EARL SUMMARY

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  1. HURRICANE EARL SUMMARY UPDATED SEPTEMBER 3, 2010 8:00 AM

  2. Hurricane Earl – 6:15 AM

  3. HURRICANE EARL PROJECTION • Earl will likely pass 50 to 100 miles southeast of Nantucket around midnight tonight • Probably as a Category 1 hurricane • Preparations for Earl should be complete by early this afternoon for Cape Cod, islands, and immediate south coast • Primary area of concern continues to be Cape Cod, Nantucket and Martha’s Vineyard

  4. HURRICANE EARLWATCHES/WARNINGS • Hurricane Warning: • Westport to Hull • But primary concern is with Cape Cod, Martha’s Vineyard, and Nantucket – especially outer Cape and Nantucket • Tropical Storm Warning • Rest of southern New England coastline

  5. SOUTHERN NEW ENGLAND IMPACTSMarine • High seas, high surf, and dangerous rip currents through Saturday • Along most ocean exposed beaches whether south or east facing • High surf and dangerous rip currents may be the greatest risk to life • Seas over open coastal waters • 10 to 20 feet to left of track • 20 to 30+ feet very near track • 30 to 40+ feet to right of the track

  6. HURRICANE EARL IMPACTSWind • Tropical Storm Force winds Cape Cod and the Islands with hurricane force gusts possible – especially over the outer Cape and Nantucket • Tropical Storm force gusts likely rest of Massachusetts and Rhode Island coastline • Possibility of a short duration of sustained tropical storm force winds immediate Rhode Island south coast , including Block Island, Buzzards Bay coast, and Plymouth County coast • Tropical Storm force gusts possible remainder of southeast New England along and southeast of a Boston to Providence line • Any shift to the west of the track is looking less likely with time but would shift stronger winds to NW

  7. WIND SPEEDS • Outer Cape and Nantucket • NE and then N 40 to 50 mph with gusts 70 to 80 mph possible • Rest of Cape and Martha’s Vineyard • NE and then N 30 to 40 mph with gusts 60 to 70 mph possible • Rhode Island coast (incl. Block Island) and Plymouth County coast in Massachusetts • NE to N winds 25 to 35 mph with gusts 50 to 60 mph • Rest of immediate Massachusetts coast and along Boston to Providence corridor: • NE to N to NW winds 20 to 30 mph with gusts 40 to 50 mph possible

  8. WIND TIMELINE • Gusts to near Tropical Storm force arrive south coast and islands around 3 to 5 PM and spread north to Cape Ann by 6 or 7 PM • Strongest winds for a 3 to 6 hour duration between 8 PM and 2 AM for most locations • Winds becoming NW and diminishing 4 to 8 AM • W to NW winds gusting to 30 knots Saturday late morning and afternoon

  9. HURRICANE EARL IMPACTSHeavy Rain/Flooding • 2 to 4 inches of rain with spot higher amounts up to 6 inches Cape Cod, Martha’s Vineyard, Nantucket, as well as adjacent southeast Massachusetts • Flash Flood Watch in this area • Urban poor drainage flooding most likely problem • 1 to 3 inches for Rhode Island and rest of eastern Massachusetts • 1 inch or less near CT River Valley • Heaviest rain 6 PM to midnight

  10. HURRICANE EARL IMPACTSStorm Surge Flooding • Storm surge of 2 to 4 feet may cause minor flooding along vulnerable portions of the Nantucket, Chatham and Martha’s Vineyard shoreline during this evening’s high tide • Surge of around 2 feet may cause spotty minor coastal flooding Narragansett Bay – not a serious concern • Rain runoff will come after high tide along Narragansett Bay • Splash over around the time of the late afternoon high tide ocean exposed RI south coast due to large breakers • Up to 2 feet of surge rest of Massachusetts east coast during the evening high tide with splash over possible • Minor storm surge flooding possible for Wellfleet and Provincetown harbors after Earl passes Friday night • 3 to 6 foot surge possible 2 to 4 AM but between high tides

  11. POST HURRICANE EARL • Mostly Sunny and gusty Saturday • NW wind gusts 30 to 35 mph • Swells, surf, and rip currents subsiding during Saturday but still dangerous • May have some lingering rip current concerns on Sunday…especially east facing coasts

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