1815 New England hurricane

Great September Gale
Category 4 major hurricane (SSHWS/NWS)

The Great Storm of 1815 sends ships and water into downtown Providence, Rhode Island
Formed before September 22, 1815 (1815-09-22)
Dissipated September 24, 1815 (1815-09-25)
Highest winds 1-minute sustained: 135 mph (215 km/h)
Lowest pressure ≤ 947 mbar (hPa); 27.96 inHg
(Estimated [1])
Fatalities 38+ direct
Damage $12.5 million (1815 USD)
Areas affected New England
Part of the 1815 Atlantic hurricane season

The Great September Gale of 1815 (the word "hurricane" was not yet current in American English at the time) is one of five "major hurricanes" (Category 3 on the Saffir-Simpson Hurricane Scale) to strike New England since 1635.[2] At the time it struck, the Great September Gale was the first hurricane to strike New England in 180 years.[3]

After striking on Long Island, the hurricane caused major damages in Connecticut, Massachusetts, New Hampshire and Rhode Island.[4] Rhode Island suffered the worst damage, as the storm surge flooded towns along Narragansett Bay up to and including Providence.[5]

Origin

The hurricane first struck the Turks Islands near the Bahamas on September 20, with a strength estimated to have been equivalent to a Category 4 hurricane.[6]

Impact

New York

The storm struck Long Island on September 23, 1815, probably coming ashore near Center Moriches (Ludlum) around 7:00 A.M.[6] On the south shore of Long Island it broke through the barrier beach and created the inlet that still isolates Long Beach, which had previously been an eastward extension of The Rockaways.

Connecticut

Around 9:00 A.M. the storm came ashore at Saybrook, Connecticut with the force of what would now be considered a Category 3 hurricane.[6] Waves of up to six feet were reported in New London.[6]

Rhode Island

Water levels of the 1815 and 1938 storms are marked at Old Market House, Providence

The "Great Storm"[7] (or "Great Gale"),[5] as it was known there, hit Providence, Rhode Island on the morning of September 23. From about 10:00 A.M. to noon,[7] the storm delivered a storm surge that funneled up Narragansett Bay where it destroyed some 500 houses and 35 ships. Dozens of ships were deposited on the streets of Providence.[7] The bowsprit of the ship "Ganges" was smashed into the third-story of the Washington Insurance Company building.[5] The Second Baptist Meeting House was destroyed. Most of the buildings on the east side from south of the Market House to India Point were destroyed.[6] At India Point, houses and wharves were destroyed.[7] Both the Washington Bridge and the Central (Red) Bridge were uprooted from their piers and destroyed.[7]

The rain appears to have been saturated with salt.[6] The leaves on trees which were not blown away were covered with a white salt coating that resembled a light frost.[6] Even houses turned white.[6]

A line on the Old Market Building marks the 11-foot (3.4 m) storm surge that was unsurpassed in the city until the New England Hurricane of 1938, which brought a 17.6-foot (5.4 m) storm surge. There is still a worn plaque on the Rhode Island Hospital Trust building (built in 1917), along with a newer plaque showing the higher 1938 hurricane water level. At Matunuck, Rhode Island, sediment studies have identified the overwash fan of sediments in Succotash Marsh, where the 1815 hurricane storm surge overtopped the barrier beach.

The financial loss was estimated at one and a half million dollars, one-quarter the total valuation of the city. Fortunately, only two lives were lost,[6][7] both in India Point.[6]

After the storm, much of the Narragansett Bay area was rebuilt with higher riverbanks, raised wharves, and more durable building practices, to help protect against future storms.[5]

Massachusetts

In Dorchester, Massachusetts, just south of Boston, local historian William Dana Orcutt wrote in the late 19th century of the hurricane's impact: "In 1815 there was a great gale which destroyed the arch of the bridge over the Neponset River. This arch was erected over the bridge at the dividing line of the towns [Dorchester and Milton] in 1798." Dorchester's First Parish Meeting House was too badly damaged to repair.[8]

New Hampshire

The eye passed into New Hampshire near Jaffrey and Hillsborough.[9]

Meteorology

In the aftermath of the Great Gale, the concept of a hurricane as a "moving vortex" was presented by John Farrar, Hollis Professor of Mathematics and Natural Philosophy at Harvard University. In an 1819 paper he concluded that the storm "appears to have been a moving vortex and not the rushing forward of a great body of the atmosphere".

See also

References

  1. ↑ Microsoft Word - MASTER_MASTER Oct 23.doc
  2. ↑ Hughes (1987), referring to the Great Colonial Hurricane of 1635, the 1821 Norfolk and Long Island hurricane, “Hurricane Four” of the 1893 Atlantic hurricane season, and the New England Hurricane of 1938.
  3. ↑ Norcross, Bryan (2006). Hurricane Almanac 2006: The Essential Guide to Storms Past, Present, and Future. Macmillan. p. 34. ISBN 0-312-36297-8.
  4. ↑ "1815- The Great September Gale". Hurricanes: Science and Society. September 1815. Retrieved 28 September 2014.
  5. 1 2 3 4 Emlen, Rob (23 September 2015). "200 years ago today: Remembering the Great Gale of 1815". The Providence Journal. Retrieved 23 September 2015.
  6. 1 2 3 4 5 6 7 8 9 10 Cavanaugh, Ray (20 September 2015). "Providence besieged by Great Gale in 1815". The Providence Journal. Retrieved 23 September 2015.
  7. 1 2 3 4 5 6 Greene, Welcome Arnold (1886). The Providence Plantations for 250 Years. Providence, RI: J.A. & R.A. Reid. p. 73.
  8. ↑ Dorchester Reporter, Dorchester MA USA
  9. ↑ Welcome - Homeland Security & Emergency Management, NH DOS

Further reading

External links

Media related to 1815 Atlantic hurricane season at Wikimedia Commons

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