Hurricane Gerda (1969)

Infobox Hurricane
Name=Hurricane Gerda
Type=hurricane
Year=1969
Basin=Atl
Image location=Gerda69sat1.jpg


Formed=September 6, 1969
Dissipated=September 11, 1969
1-min winds=110
Pressure=979
Da

Inflated=
Fatalities=0 direct
Areas=Florida, North Carolina, New England, Atlantic Canada
Hurricane season=1969 Atlantic hurricane season

Hurricane Gerda was an Atlantic tropical cyclone that formed during the 1969 Atlantic hurricane season. It was the seventh named storm, fifth hurricane and third major hurricane of the 1969 season. [cite web|author=Unisys|year=2007|title=Unisys 1969 Hurricane Archive|accessdate=2007-03-30|url=http://weather.unisys.com/hurricane/atlantic/1969/index.html] Gerda formed on September 6 and crossed Florida as a tropical depression. Gerda later then became a tropical storm while moving northeast and reaching hurricane status on September 8. Gerda brushed past the Outer Banks of North Carolina before reaching maximum intensity of 125 mph (205 km/h) and a low barometric pressure of 979 millibars. On September 10, Gerda made landfall near Eastport, Maine and became extratropical the following day.

Hurricane Gerda brought light rain across southern Florida and moderate to heavy rain across eastern North Carolina and New England, causing minor damage to trees and powerlines. There were no fatalities or injuries from Gerda.

Meteorological history

A tropical wave moved off the eastern coast of Africa on August 21 and moved westward across the Atlantic Ocean without development. On September 3, the disturbance merged with a dissipating upper level low pressure system over Hispaniola and Puetro Rico and developed an increasing cloud mass as it continued westward. As the disturbance crossed the Bahamas, satellite imagery showed the disturbance gaining a distinct circulation on September 5. On September 6, the disturbance became a Tropical Depression before it made landfall in southeastern Florida on the same day.cite web|author=R.H. Simpson, Arnold L. Sugg and Staff|year=1970|title=Atlantic Hurricane Season of 1969|publisher=American Meteorological Socitey|accessdate=2007-03-30|url=http://docs.lib.noaa.gov/rescue/mwr/098/mwr-098-04-0293.pdf]

After crossing Florida, the depression drifted northeastward back over the western Atlantic Ocean on September 7. As the system headed northeastward, hurricane hunter aircraft recorded winds of 45 mph (72 km/h), and barometric pressure fell to 1000 millibars. Forecasters at the National Hurricane Center upgraded the system to tropical storm status and named it "Gerda". Gerda continued to move rapidly northeast in response to an approaching trough and the storm reached hurricane status on September 8. Gerda's forward speed approached 40 mph (64 km/h) as the eye of the hurricane passed 50 miles (80 km) east of Cape Cod on September 9, with maximum sustained winds of 125 mph (205 km/h). Because the storm was interacting with the trough to the west and was moving rapidly northeastward, the result was the minimum central barometric pressure was an unusually high 979 millibars. Gerda later made landfall near Eastport, Maine later that day as a Category 2 hurricane, one of the strongest to ever make landfall in the state. Gerda then became extratropical as it crossed into Canada as an 80 mph (130 km/h) extratropical storm on September 10. The storm later dissipated the following day.cite web|author=Weather Underground|year=2007|title=Weather Underground Archive on Gerda|accessdate=2007-04-01|url=http://www.wunderground.com/hurricane/at196907.asp]

Preparations

Gale warnings and small craft advisories were issued along the coast of North Carolina stretching from Wilmington to Cape Hatteras. [cite web|author=United Press International|year=1969|title=Year's seventh storm brewing|publisher=The Delta-Democrat Times|accessdate=2007-04-03|url=http://www.thehurricanearchive.com/Viewer.aspx?
] Storm shelters in Kitty Hawk and Manteo, North Carolina were opened and the American Red Cross sent relief workers and equipment to North Carolina. In Fredrick County, Maryland, local forecasters and the National Weather Service issued a flood watch while the National Hurricane Center issued a hurricane watch for the county, as well as the rest of eastern Maryland. [cite web|author=The Fredrick Post|year=1969|title=Hurricane Watch in the Fredrick Area|accessdate=2007-04-03|url=http://www.thehurricanearchive.com/Viewer.aspx?
] Officials at the National Weather Service and National Hurricane Center predicted that the western half of the storm would lash New York City and much of New England (which were under a hurricane watch) with high winds and torrential rainfall. [cite web|author=Washington Post|year=1969|title=Hurricane Gerda Beating North, Rains Threaten Floods in Area|accessdate=2007-04-03|url=http://pqasb.pqarchiver.com/washingtonpost_historical/access/147592762.html?dids=147592762:147592762&FMT=ABS&FMTS=ABS:FT&date=SEP+09%2C+1969&author=From+News+Dispatches&pub=The+Washington+Post&desc=Hurricane+Gerda+Beating+North%2C+Rains+Threaten+Floods+in+Area&pqatl=google]

Ships and other water craft were advised to avoid the Cape Cod area as the storm was forecast to brush that area, which was put under a hurricane warning by the National Hurricane Center. In Massachusetts, schools were closed and emergency shelters were opened to accommodate evacuees. Evacuations were ordered for residents living in low lying areas in Cape Cod. In Boston, the threat of the storm caused both elementary and middle schools to close at noon while high schools were closed at 1 p.m. (est).cite web|author=United Press International|year=1969|title=Hurricane Gerda eyes New England Coast|publisher=The Lowell Sun|accessdate=2007-04-03|url=http://www.thehurricanearchive.com/Viewer.aspx?
] The approach of the storm also postponed a fair at a local hospital and planes at Otis Air Force Base were quickly moved to their hangars. Much of southeastern Massachusetts civil defense and fire departments were alerted in preparation of the storm's impact. In Rhode Island, schools and other buildings were used as shelter to house evacuees.cite web|author=United Press International|year=1969|title=Gerda Slamming into New England|publisher=Fitchburg Sentinel|accessdate=2007-04-03|url=http://www.thehurricanearchive.com/Viewer.aspx?
] As Hurricane Gerda sped up the East Coast of the United States, the National Hurricane Center extended the hurricane warnings from Block Island, Rhode Island to Eastport, Maine. [cite web|author=Associated Press|year=1969|title=Storm Rips Northeast at High Speed|publisher=The Portsmouth Herald|accessdate=2007-04-03|url=http://www.thehurricanearchive.com/Viewer.aspx?
] In Newport, Rhode Island, two ships of the United States Navy left their berths to ride out the storm. [cite web|author=Associated Press|year=1969|title=High tides to accompany the storm|publisher=Northwest Arkansas Times|accessdate=2007-04-03|url=http://www.thehurricanearchive.com/Viewer.aspx?
]

Impact

Hurricane Gerda affected much of eastern North Carolina and New England with gusty rain and heavy rainfall causing minor to moderate damage. In Florida, Gerda dropped light rainfall across southern and central portions of the state. Damage there, if any, was unknown.cite web|author=David Roth|year=2007|title=HPC Report on Gerda|publisher=Hydrometeorligal Prediction Center|accessdate=2007-04-06|url=http://www.hpc.ncep.noaa.gov/tropical/rain/gerda1969.html] In South Carolina, Gerda brought sustained winds of 20 mph (32 km/h).cite web|author=John E. Hughes|year=2000|title=Tropical Cyclones Affecting North Carolina since 1856|publisher=NOAA|accessdate=2007-04-10|url=http://repository.wrclib.noaa.gov/cgi/viewcontent.cgi?article=1002&context=nws_tech_memos] In Canada, Gerda passed over Labrador as a strong extratropical storm with hurricane force winds. Damage there is unknown.

North Carolina and Mid Atlantic

In North Carolina, Gerda produced moderate rainfall across the Outer Banks. The highest rainfall total on the Outer Banks was 1.32 inches (33.5 mm) in Cape Hatteras. Elsewhere on the Outer Banks, the storm produced 27 mph (43 km/h) winds with gusts up to 36 mph (58 km/h). A tide gauge in Ocracoke Island reported a tide of 1.5 feet (0.45 meter) above normal. Gerda then dropped heavy rainfall across eastern Virginia, Maryland, New Jersey and New York. There was no reported damage from Gerda's impact on North Carolina and the Mid-Atlantic States.

New England

Gerda produced heavy rainfall throughout much of southeastern New England. In Massachusetts, a rain gauge in South Wellfleet reported rainfall of 5.67 inches (127 mm). The town of Lowell also reported heavy rainfall from the storm as two inches (50.8 mm) of rain fell in a 24 hour period. The heavy rainfall caused isolated street flooding due to clogged storm drains. In Fitchburg, the storm dropped 1.87 inches (47.4 mm) of rain while Cape Cod received tides 3-6 feet (0.91-1.83 meters) above normal. Elsewhere in New England, the storm caused minor damage to trees, powerlines and highways. There were no reported fatalities or injuries from Gerda's impact on New England.

Naming

Because the damage was minimal, the name Gerda was not retired by the National Hurricane Center (which had authority in naming Atlantic tropical cyclones back then). As a result, it was on the list of names for the 1972 Atlantic hurricane season but was never used due to inactivity. The name has not been used since and is not on the current list of names for the Atlantic Basin.

See also

* tropical cyclone

References