Hurricane Agnes rainfall and floods, June-July 1972

Bailey, James F.; Patterson, James L.; Paulhus, J. L. H.

doi:10.3133/pp924

Cited by 32 publications

(28 citation statements)

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“…3). Coastal areas still receive more precipitation than inland regions, but a prominent precipitation gradient becomes evident along the Appalachian Mountains, which act as a barrier that enhances local precipitation via orographic lifting (e.g., Schwartz, 1970;Bailey et al, 1975;Clark et al, 1987). Furthermore, the zone of tropical cyclone influence is limited by distance from the coast, as many storms undergo cyclolysis relatively soon after making landfall.…”

Section: Rainfallmentioning

confidence: 98%

Climatology of Tropical Cyclone Rainfall in the Southeastern United States

Knight

Davis

2007

Physical Geography

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Rainfall associated with tropical cyclones contributes a significant amount to the annual rainfall in the southeastern United States. This study quantifies this amount from 1980-2004 as we compare the total rainfall to an amount excluding rainfall arising from tropical cyclones. Additionally, we use these precipitation amounts to examine the climatic water balance and observed hurricane-season moisture deficits and compare actual deficits to deficits with tropical cyclone rainfall removed. Tropical cyclones contribute as much as 15% of the hurricane-season rainfall along portions of the Carolinas. The Appalachian Mountains act as a barrier to the inland influence of tropical cyclone rainfall and generate a spatial rainfall gradient on mean precipitation maps. Within a hurricaneseason, the percentage of rainfall that can be attributed to tropical cyclones tends to progress eastward throughout the season. Temporally, rainfall from tropical cyclones has increased over much of the region, while nontropical cyclone rainfall has largely remained unchanged. With respect to the water balance, soil moisture deficits would significantly increase if the southeastern United States did not receive rainfall from tropical cyclones. This would have consequences for the agricultural community and would increase the reliance on irrigation in agricultural production. [Key words: tropical cyclone rainfall, hurricane climatology, soil moisture deficit, climatic water balance.]

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Section: Rainfallmentioning

confidence: 98%

Climatology of Tropical Cyclone Rainfall in the Southeastern United States

Knight

Davis

2007

Physical Geography

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“…of rain fell across areas of southeastern Pennsylvania as Hurricane Agnes came ashore (Bailey et al, 1975; Figure 1). of rain fell across areas of southeastern Pennsylvania as Hurricane Agnes came ashore (Bailey et al, 1975; Figure 1).…”

Section: Introductionmentioning

confidence: 99%

The Mighty Susquehanna—Extreme Floods in Eastern North America During the Past Two Millennia

Toomey

Cantwell

Colman

et al. 2019

Geophysical Research Letters

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The hazards posed by infrequent major floods to communities along the Susquehanna River and the ecological health of Chesapeake Bay remain largely unconstrained due to the short length of streamgage records. Here we develop a history of high‐flow events on the Susquehanna River during the late Holocene from flood deposits contained in MD99‐2209, a sediment core recovered in 26 m of water from Chesapeake Bay near Annapolis, Maryland, United States. We identify coarse‐grained deposits left by Hurricane Agnes (1972) and the Great Flood of 1936, as well as during three intervals that predate instrumental flood records (~1800–1500, 1300–1100, and 400–0 CE). Comparison to sedimentary proxy data (pollen and ostracode Mg/Ca ratios) from the same core site indicates that prehistoric flooding on the Susquehanna often accompanied cooler‐than‐usual winter/spring temperatures near Chesapeake Bay—typical of negative phases of the North Atlantic Oscillation and conditions thought to foster hurricane landfalls along the East Coast.

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“…Peaks at these sites generally exceeded the largest peaks that resulted from Hurricane Agnes in similar size basins (Bailey, Patterson, and Paulhus, 1975). It is reasonable to infer, therefore, that the peaks of 170,000 fts /s, Cheat River at Parsons, West Virginia, and 240,000 ft s /s, South Branch Potomac River near Springfield, West Virginia (sites 146 and 14, table 16), for example, were extremely rare events.…”

Section: General Description Of Floodmentioning

confidence: 99%

“…Sixty-two lives were lost, and damage was estimated to be $1,400 million. The damage has been exceeded only by Hurricane Agnes (1972), 117 lives lost and $3,103 million damages; Camille (1969), 258 lives lost and $1,421 million damages; and Betsy (1965), 75 lives lost and $1,420 million damages (Bailey, Patterson, and Paulhus, 1975). The costs of these three previous storms would, of course, be substantially greater if translated into the 1985 dollars of the subject event.…”

Section: General Description Of Floodmentioning

confidence: 99%

Floods in West Virginia, Virginia, Pennsylvania, and Maryland, November 1985

Carpenter¹

1990

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Hurricane Agnes rainfall and floods, June-July 1972

Cited by 32 publications

References 0 publications

Climatology of Tropical Cyclone Rainfall in the Southeastern United States

Climatology of Tropical Cyclone Rainfall in the Southeastern United States

The Mighty Susquehanna—Extreme Floods in Eastern North America During the Past Two Millennia

Floods in West Virginia, Virginia, Pennsylvania, and Maryland, November 1985

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