1964 Pacific hurricane season

none EPac 1964 1964 Pacific hurricane season summary map.png July 6, 1964 September 9, 1964 Odessa 85 986 6 5 1 0 1 1962, 1963, 1964, 1965, 1966 1964 North Indian Ocean cyclone season 1964 Atlantic hurricane season 1964 Pacific typhoon season The 1964 Pacific hurricane season was the least active Pacific hurricane season on record since 1953. The season officially started on May 15 in the eastern Pacific and June 1 in the Central Pacific Hurricane Center's area of responsibility and lasted until November 30 in both regions. These dates conventionally delimit the period of each year when most tropical cyclones form in the northeastern Pacific Ocean.Neal Dorst When is hurricane season? http://www.aoml.noaa.gov/hrd/tcfaq/G1.html Atlantic Oceanographic and Meteorological Laboratory November 25, 2010 https://web.archive.org/web/20101206195446/http://www.aoml.noaa.gov/hrd/tcfaq/G1.html December 6, 2010 live During this season only six tropical storms developed, of which two intensified into hurricanes. Of the two hurricanes, one reached Category 2 intensity of the Saffir-Simpson Hurricane Wind Scale. No storms reached major hurricane status (Category 3 or higher on the hurricane scale), an unusual occurrence. The first tropical cyclone of the season, Tropical Storm Natalie made landfall in Mexico in early to mid-July. About a week later, Hurricane Odessa became the strongest storm of the season in terms of wind speed. Tropical Storm Prudence brought high waves to Southern California, while becoming the strongest storm of the year in terms of barometric pressure. In addition, Tropical Storm Tillie produced severe flooding to much of the Southwestern United States, in particular in Arizona in early to mid-September. __TOC__ Seasonal summary With only six named storms, the season was well below the 1949–2006 average of 13 named storms and is the second fewest storms in the hurricane database, only behind the 1953 Pacific hurricane season, in which just 5 storms were observed. Moreover, 1964 is the least active season since the satellite era began in the basin in 1961.Re-analysis of the Eastern North Pacific HURDAT Department of Commerce National Hurricane Center American Meteorological Society Todd Kimberlain April 16, 2012 Of the six storms that formed, three formed in July, two developed in August, and the final storm of the year existed in early to mid-September. Only two tropical cyclones reached hurricane status, compared to the modern-day average of seven. Furthermore, 1964 is also one of the few seasons without a major hurricane. This season was part of a decade-long absence of major hurricanes; during the 1960s, only one major hurricane was observed and none were noted from 1960–1966. However, it is possible that some storms were missed due to the lack of satellite coverage in the region; at that time, satellite data was still scarce, and 1964 is still two years shy of the start of the geostationary satellite era, which began in 1966. Some efforts are underway to improve the records for this time period; however, this process will likely take years to complete. Also, the Pacific Decadal Oscillation (PDO) was in the midst of a cold phase during this time period, which tends to suppress Pacific hurricane activity.Variability of rainfall from tropical cyclones in Northwestern Mexico http://www.ejournal.unam.mx/atm/Vol21-2/ATM002100206.pdf Atmosfera October 30, 2011 8 2008 https://web.archive.org/web/20150616061921/http://www.ejournal.unam.mx/atm/Vol21-2/ATM002100206.pdf June 16, 2015 deadFranco Biondi Alexander Gershunov Daniel R. Cayan 2001 North Pacific Decadal Climate Variability since 1661 Journal of Climate 14 1 5–10 10.1175/1520-0442(2001)014<0005:NPDCVS>2.0.CO;2 http://www.ngdc.noaa.gov/paleo/pubs/biondi2001/biondi2001.html https://web.archive.org/web/20010306111901/http://www.ngdc.noaa.gov/paleo/pubs/biondi2001/biondi2001.html dead March 6, 2001 January 27, 2013 2001JCli...14....5B free During the season, tropical cyclone advisories were issued by the Naval Fleet Warning Central (NFWC) in Alameda, which held responsibility for the basin until 1970. Systems Tropical Storm Natalie EPac Tropical Storm Natalie weather map, July 6, 1964.jpg July 6 July 7 45 1001 Natalie 1964 track.png On July 5, the ship California Star recorded winds of 35 mph km/h on 5 and a barometric pressure of 1005.8 mb inHg on on 0;McGurrin, Martin Mariners Weather Log: Volume 9, Issue 2: March 1964 1964 Tropical Cyclones in the Eastern Pacific 1964 United States Weather Bureau 42–45 Rosendal, Hans E https://books.google.co.uk/books?id=ZBoWC9cwz6gC&pg=RA1-PA55&source=gbs_selected_pages&cad=1#v=onepage&q&f=false consequently, the storm was upgraded into Tropical Storm Natalie. After passing through the Tres Marinas Islands just offshore, Natalie attained its peak intensity of 80 mph km/h on 5 (making Natalie a Category 1 hurricane on the present-day Saffir-Simpson Hurricane Wind Scale) and a peak pressure of 1001 mb inHg on, though the Pacific hurricane database does not show the storm getting any stronger than 50 mph km/h on 5. The next day, July 7, the NFWC reported that Natalie made landfall near Mazatlan with winds of 50 mph km/h on 5 just before dissipating. No known impact was recorded. Hurricane Odessa EPac Hurricane Odessa 16 Jul 1964 TIROS VIII.png Odessa 1964 track.png July 15 July 19 85 986 http://www.ncdc.noaa.gov/IPS/cdns/cdns.html Hurricane Odessa formed on July 15. The storm quickly intensified and was believed to have attained peak intensity of 100 mph km/h on 5, making Odessa a Category 2 hurricane on the Saffir-Simpson Hurricane Wind Scale. After moving west, Odessa steadily weakened, and by July 18, the winds had decreased to 40 mph km/h on 5. Later on July 18, it turned towards the northwest, and shortly thereafter, the hurricane turned towards the west-southwest. Odessa quickly re-intensified, and according to ship reports, the storm attained winds of 70 mph km/h on 5. Odessa dissipated at 1800 UTC on July 19. Even though the storm was about 250 mi km on 5 south of Socorro Island at the time of its formation, tropical cyclone warnings and watches were posted for the island. Tropical Storm Prudence EPac Tropical Storm Prudence weather map, July 22, 1964.jpg July 20 July 24 60 1000 http://www.ncdc.noaa.gov/IPS/cdns/cdns.html Prudence 1964 track.png Near the area where Odessa developed, a mid-level tropical storm formed early on July 20 and it was named Prudence, despite ships in the vicinity of the storm reporting winds of 35 mph km/h on 5. Moving generally west-northwest, Prudence initially failed to intensify, and maintained winds of 50 mph (85 km/h) for a few days. After briefly turning west on July 22, Prudence resumed a west-northwest course while attaining its peak wind speed of 70 mph km/h on 5. Prudence held on to this intensity until July 23, when it encountered cooler sea surface temperatures. Shortly before dissipating, the system turned back towards the west. Tropical Storm Prudence dissipated on July 24. Even though Prudence never made landfall, the cyclone produced high waves along the California coast, especially along Newport Beach.Towering surf hits California Tri-City Herald July 21, 1964 1A Tropical Storm Roslyn EPac Tropical Storm Roslyn weather map, August 21, 1964.jpg August 21 August 22 55 1006 http://www.ncdc.noaa.gov/IPS/cdns/cdns.html Roslyn 1964 track.png A tropical depression formed on August 21. Later that day, the NFWC upgraded the depression into a tropical storm, and was named Roslyn, with winds of 50 mph km/h on 5. At the time of the upgrade, Tropical Storm Roslyn was located roughly 500 mi km on 5 south-southwest of Cabo San Lucas. After passing east of Clarion Island during the evening hours of September 20, Roslyn attained its peak strength of 65 mph km/h on 5, making Roslyn a strong tropical storm. While maintaining its intensity, Roslyn drifted west-northwest. The storm dissipated at 1800 UTC on August 22. Tropical Depression Silvia EPac Tropical Depression Silvia weather map, August 24, 1964.jpg August 23 August 24 30 1006 http://www.ncdc.noaa.gov/IPS/cdns/cdns.html File:Silvia 1964 track.png Tropical Depression Silvia was first noted by the NFWC on August 23 about 60 mi km on 5 south of Mazatlan, with winds of 50 mph km/h on 5. After tropical cyclogenesis, the storm quickly weakened. Simultaneously, Silvia moved westward, passing about 60 mi km on 5 south of Cabo San Lucas. By August 24, the NFWC had stopped monitoring the system. The depression was named by the NFWC as it resembled to be a tropical storm. However, post-storm analysis show that Silvia never attained tropical storm status. Tropical Storm Tillie EPac Tillie Sept 7 1964 0734Z.png Tillie 1964 track.png September 7 September 9 50 1000 http://www.ncdc.noaa.gov/IPS/cdns/cdns.html The last tropical cyclone of the season, Tropical Storm Tillie, developed on September 7. At first, the cyclone moved north-northwest; Tillie reached its peak intensity of 60 mph km/h on 5 at that time of its formation approximately 150 mi km on 5 west of Mazatlan. Early on September 8, while located about 100 mi km on southwest of Cabo San Lucas, Tillie began a gradual turn towards the west-northwest. Tropical Storm Tillie dissipated at 0600 UTC on September 9 off the coast of California,Tilie Is Weakening Off Of California https://news.google.com/newspapers?id=sIBPAAAAIBAJ&pg=4354,1504747&dq=tropical+storm+tillie&hl=en June 14, 2013 Ocala Star-Banner September 9, 1964 Associated Press 6 having only been a tropical cyclone for just over two days. When Tillie posed a threat to Baja California, winds of 40 mph km/h on 5 were forecast to occur.Tropical Storm Tillie Weakens https://news.google.com/newspapers?id=_95NAAAAIBAJ&pg=6218,6464536&dq=tropical+storm+tillie&hl=en June 14, 2013 The Free Lance September 9, 1962 2 The storm's residual moisture was adverted over southern Arizona, allowing a passing cold front to trigger widespread showers and thunderstorms on the evening of September 9.U.S. Army Corps of Engineers Santa Cruz River, Paseo de las Iglesias (Pima County, Arizona) Final Feasibility Report and Environmental Impact Statement USACE July 21, 2011 http://rfcd.pima.gov/largefiles/pdli2/appxa.pdf dead https://web.archive.org/web/20110929181403/http://rfcd.pima.gov/largefiles/pdli2/appxa.pdf September 29, 2011 The most significant rainfall was reported along southeastern Arizona, southern New Mexico, and around El Paso.The Effects of Tropical Cyclones on the Southwestern United States NOAA Technical Memorandum August 1986 http://docs.lib.noaa.gov/noaa_documents/NWS/NWS_WR/TM_NWS_WR_197.pdf June 4, 2013 National Weather Service Western Region Amado sustained 5.66 in mm on in a 72‑hour time span. Furthermore, Tucson received 3.05 in mm on of rainfall in a 24-hour period between September 9–10,Green Raymond A. The Weather and Circulation of September 1964 Monthly Weather Review December 1964 92 12 601–606 10.1175/1520-0493(1964)092<0601:TWACOS>2.3.CO;2 1964MWRv...92..601G free and two locations—one in the Catalina Mountain foothills and one near Sahuarita—recorded 6.75 in mm on of precipitation. Coupled with rain during the previous week, the Santa Cruz River produced heavy runoff, with peak flows of 15900 cuft/s m3/s on recorded near Cortaro. Storm names The following names were used for tropical storms that formed in the North Pacific Ocean east of 140°W during 1963. The names came from a series of four rotating lists. Names were used one after the other without regard to year, and when the bottom of one list was reached, the next named storm received the name at the top of the next list.http://australiasevereweather.com/cyclones/2008/summ0711a.htm Monthly Global Tropical Cyclone Summary: November 2007 First Installment Gary Padgett July 11, 2008 Australian Severe Weather February 10, 2010 Natalie Odessa Prudence Roslyn Silvia Tillie Had any tropical storms formed in the North Pacific between 140°W and the International Date Line in 1963, their names would have been drawn from the Western Pacific typhoon naming list. See also Tropical cyclones Tropical cyclone List of Pacific hurricanes 1964 Atlantic hurricane season 1964 Pacific typhoon season 1964 North Indian Ocean cyclone season Australian region cyclone seasons: 1963–64 1964–65 South Pacific cyclone seasons: 1963–64 1964–65 South-West Indian Ocean cyclone seasons: 1963–64 1964–65 References 2 1960 Pacific hurricane 1964 Category:Pacific hurricane seasons Category:Articles which contain graphical timelines