- 1970 Atlantic hurricane season
Infobox hurricane season
Basin=Atl
Year=1970
Track=1970 Atlantic hurricane season map.png
First storm formed=May 17 ,1970
Last storm dissipated=October 28 ,1970
Strongest storm name=Celia
Strongest storm winds=110
Strongest storm pressure=945
Average wind speed=1
Total depressions=
Total storms=10
Total hurricanes=5
Total intense=2
Damagespre=At least
Da
Inflated=1
Fatalities=71
five seasons=1968, 1969, 1970, 1971, 1972The 1970 Atlantic hurricane season officially began onJune 1 ,1970 , and lasted untilNovember 30 ,1970 . These dates conventionally delimit the period of each year when mosttropical cyclone s form in theAtlantic basin . The season was fairly average, with 10 total storms forming, of which five were hurricanes.Notable storms of 1970 include
Hurricane Celia , which killed 20 and caused $453.8 million in damages as it passed overCuba and intoCorpus Christi, Texas ; and Tropical Storm Dorothy, which killed 51, most inMartinique .__TOC__
torms
Hurricane Alma
Infobox Hurricane Small
Basin=Atl
Formed=May 17
Dissipated=May 26
1-min winds=70
Pressure=993An area of disturbed weather persisted over the southwesternCaribbean Sea in the middle of May. It gradually organized, and a tropical depression formed onMay 17 . In response to low shear aloft and warm water temperatures, the depression rapidly strengthened on the 20th, becoming a storm early in the day and a hurricane by night. This didn't last, and Alma weakened to a storm on the 21st and a depression the following day, mostly due to upper-level shear. The depression continued its general northward movement, with a brief jog to the west, and hitCuba on the 24th as a convert|30|mi/h|km/h|abbr=on tropical depression. As Alma crossed the easternGulf of Mexico , it retained a very well defined circulation with an eye appearing on radar, but shear limited convection and strength. Alma crossed theFlorida coast on the 25th, and became extratropical 2 days later overNorth Carolina .Alma was one of only three May hurricanes during the 20th century in the
Atlantic basin . The others were Able in 1951 and an unnamed storm in 1908.Tropical Storm Becky
Infobox Hurricane Small
Basin=Atl
Track=Becky 1970 track.png
Formed=July 19
Dissipated=July 23
1-min winds=55
Pressure=1003A rain system from theIntertropical Convergence Zone nearPanama joined a low-level vortex over the northwest Caribbean, becoming a tropical depression onJuly 19 . The next day it organized over theYucatan Channel and became Tropical Storm Becky. Becky reached a peak of convert|65|mi/h|km/h|abbr=on winds over the eastern Gulf of Mexico, but upper level winds weakened it to a tropical depression prior itsFlorida Panhandle landfall on the 22nd. The storm weakened further over land, and dissipated over westernKentucky on the 23rd.Hurricane Celia
Infobox Hurricane Small
Basin=Atl
Track=Celia 1970 track.png
Formed=July 31
Dissipated=August 5
1-min winds=110
Pressure=945Hurricane Celia developed from a tropical wave moving through theCaribbean , becoming a tropical depression onJuly 31 and a tropical storm onAugust 1 . In the Gulf of Mexico, it rapidly became a major hurricane, but weakened steadily to an convert|85|mi/h|km/h|abbr=on hurricane. On the 3rd, it again rapidly strengthened to a major hurricane, this time reaching convert|125|mi/h|km/h|abbr=on winds prior to itsTexas landfall. Celia killed 20 due to extreme gusts, and caused $453.8 million in damage.Cite web|author=NHC|title=1970 Hurricane Season summary|year=1970|publisher=National Hurricane Center|accessdate=2008-07-10|url=http://www.nhc.noaa.gov/archive/storm_wallets/atlantic/atl1970-prelim/alma/prelim01.gif]Tropical Storm Four
Infobox Hurricane Small
Basin=Atl
Track=1970 Atlantic tropical storm 4 track.png
Formed=August 15
Dissipated=August 18
1-min winds=60
Pressure=992A tropical depression formed in the westernAtlantic Ocean near the Bahamas onAugust 15 . It moved northwestward for a day, followed by a northeast motion for another day, but it remained weak. On the 18th, in combination with baroclinic processes, the depression strengthened rapidly to a convert|70|mi/h|km/h|abbr=on tropical storm prior to becoming extratropical on the 19th south of Newfoundland.Tropical Storm Dorothy
Infobox Hurricane Small
Basin=Atl
Track=Dorothy 1970 track.png
Formed=August 17
Dissipated=August 23
1-min winds=60
Pressure=996A tropical wave led to a tropical depression beginning convert|500|mi|km east of theLesser Antilles onAugust 17 . As it moved west-northwestward, it slowly strengthened, reaching tropical storm strength on the 19th. On the 20th, it reached its peak of convert|70|mi/h|km/h|abbr=on while moving through the islands, but an upper-level cold-core trough destroyed Dorothy on the 23rd.Some sources claim Dorothy killed up to 51 people while crossing
Dominica andMartinique . [http://www.nhc.noaa.gov/pastdeadlyapp1.shtml]Hurricane Ella
Infobox Hurricane Small
Basin=Atl
Formed=September 8
Dissipated=September 13
1-min winds=110
Pressure=967Hurricane Ella developed from a surface trough near the Swan Islands in the westernCaribbean onSeptember 8 . It moved northwestward without strengthening, but on the 10th, as it moved into theGulf of Mexico , it rapidly strengthened into a tropical storm, and a hurricane 6 hours later. Hurricane Ella gradually intensified prior to landfall, reaching convert|125|mi/h|km/h|abbr=on winds on the 12th just before hitting theLa Pesca /Soto la Marina area of theMexican state ofTamaulipas . Ella rapidly dissipated over land.Tropical Storm Felice
Infobox Hurricane Small
Basin=Atl
Track=Felice 1970 track.png
Formed=September 12
Dissipated=September 17
1-min winds=60
Pressure=997An upper level trough led to the formation of a tropical depression onSeptember 12 over the southern Bahamas. Land interaction limited strength initially, but as it moved into the Gulf of Mexico, it was able to strengthen to a convert|70|mi/h|km/h|abbr=on tropical storm. Shortly after its peak Felice moved inland nearHigh Island, Texas onSeptember 16 , and dissipated as a tropical cyclone the next day over northeastern Texas. The remnant low tracked slowly east-northeast across Arkansas before dissipating onSeptember 19 .Tropical Storm Greta
Infobox Hurricane Small
Basin=Atl
Formed=September 26
Dissipated=October 5
1-min winds=45
Pressure=1005Tropical Storm Greta began quickly, forming as a tropical storm from a tropical wave over the Bahamas onSeptember 26 . Greta did not develop any further, and soon became disorganized, weakening to a tropical depression the next day as it crossed theFlorida Keys . The depression moved across the Gulf of Mexico without strengthening, and eventually hit the coast ofTampico, Tamaulipas , on the 4th, where it dissipated shortly thereafter.Hurricane Nine
Infobox Hurricane Small
Basin=Atl
Track=1970 Atlantic hurricane 9 track.png
Formed=October 12
Dissipated=October 17
1-min winds=90
Pressure=974An elongated cold-core circulation north ofPuerto Rico organized enough to be called a subtropical depression onOctober 12 . The next day it reached storm intensity, and after a drift to the west, reached hurricane intensity on the 16th. On the 16th it passed byBermuda , but damage was minimal. Baroclinic processes let the storm reach a peak of convert|100|mi/h|km/h|abbr=on winds before becoming extratropical on the 17th.Hurricane Ten
Infobox Hurricane Small
Basin=Atl
Formed=October 20
Dissipated=October 28
1-min winds=65
Pressure=988A subtropical depression formed west of theAzores from an area of non-tropical origin onOctober 20 . It strengthened to a tropical storm the next day. It slowly moved eastward, gaining strength but losing size. When it became a hurricane on the 27th, its hurricane-force wind field was only convert|5|mi|km in diameter and its tropical storm force wind field was only convert|60|mi|km in diameter. This compact cyclone became extratropical on the 28th after passing safely by the Azores.torm names
The following names were used for named storms (tropical storms and hurricanes) that formed in the North Atlantic in 1970. Names that were not assigned are marked in tcname unused.
Retirement
The name Celia was later retired and replaced by Carmen in the
1974 Atlantic hurricane season . Fact|date=February 2007ee also
*
List of Atlantic hurricanes
*List of Atlantic hurricane seasons
*1970 Pacific hurricane season
*1970 Pacific typhoon season
*1970 North Indian Ocean cyclone season
*Southern Hemisphere tropical cyclone seasons: 1969–70, 1970–71References
Further reading
*cite journal |last=Simpson |first=R. H. |authorlink= |coauthors=Pelissier, Joseph M. |year=1971 |month= |title=Atlantic Hurricane Season of 1970 |journal=Monthly Weather Review |volume=99 |issue=4 |pages=269–277 |doi=10.1175/1520-0493(1971)099<0269:AHSO>2.3.CO;2 |url=http://www.aoml.noaa.gov/general/lib/lib1/nhclib/mwreviews/1970.pdf |accessdate= |quote=
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