1. HURRICANE EARL SUMMARY UPDATED SEPTEMBER 3, 2010 5:00 PM FINAL SUMMARY FOR THIS STORM

2. Hurricane Earl – 3:15 PM

6. HURRICANE EARL PROJECTION Earl will pass about 75 miles southeast of Nantucket around or just after midnight tonight – as a weakening but large Category 1 hurricane Primary area of concern for wind remains focused on Cape Cod, Nantucket and Martha’s Vineyard - especially outer Cape Cod and Nantucket Primary area of concern for localized flash flood potential is broader and covers eastern Massachusetts and Rhode Island

7. HURRICANE EARL WATCHES/WARNINGS Hurricane Warning: – Cape Cod, Nantucket, and Martha’s Vineyard – But hurricane force winds unlikely unless unexpected jog to the west Tropical Storm Warning – New Haven CT to Woods Hole MA – North of Sagamore Beach to Hull Tropical Storm or Hurricane Warnings for most of the coastal waters

8. SOUTHERN NEW ENGLAND IMPACTS Marine 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

9. HURRICANE EARL IMPACTS Wind Tropical Storm Force winds Cape Cod and the Islands with hurricane force gusts possible over the outer Cape and Nantucket Tropical Storm force gusts likely in rest of Tropical Storm Warning area along the Massachusetts and Rhode Island coastline Gusts strong enough for scattered tree damage and scattered power outages along and southeast of a Boston to Providence corridor – Strongest gusts associated with some of the heavier rain bands

10. WIND SPEEDS Outer Cape and Nantucket – NE, then N, and NW 40 to 50 mph with gusts 70 to 80 mph possible Rest of Cape and Martha’s Vineyard – NE, then N and NW 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 to NW winds 25 to 35 mph with gusts 50 to 60 mph possible 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

11. WIND TIMELINE Gusts to near Tropical Storm force arrive south coast and islands by around 5 PM Strongest winds for a 3 to 6 hour duration between 8 PM and 3 AM for most locations – Signal suggesting peak gusts could be from N or NW 11 PM to 3 AM Winds diminishing 4 to 8 AM W to NW winds gusting to 30 knots Saturday late morning and afternoon

12. HURRICANE EARL IMPACTS Heavy Rain/Flooding 2 to 4 inches of rain with narrow band or two of higher amounts eastern Massachusetts and Rhode Island – Flash Flood Watch for all of eastern Massachusetts and Rhode Island For localized urban poor drainage or small stream flooding 1 to 3 inches possible for eastern Connecticut and portions of Worcester County Heaviest rain to around or just after midnight – Tropical downpours can dump over an inch within an hour River flooding not so much a concern as street flooding and flooding of small streams with urban drainages

13. HURRICANE EARL IMPACTS Minor Storm Surge Flooding at Worst Storm surge of 1 to 2 feet will cause minor flooding along vulnerable portions of the Nantucket, Chatham and Martha’s Vineyard shoreline during this evening’s high tide – Beaches reported under water in Madaket area of Nantucket at 405 PM per amateur radio – probably a function of very large swell from the south Splash over occurred around the time of the late afternoon high tide ocean exposed Newport south coast due to large breakers 2 to 4 foot storm surge 2 to 4 AM at Wellfleet and Provincetown harbors after Earl passes Friday night but during low tide cycle – Little or no impact expected

14. 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