List of Arizona hurricanes

Arizona has been affected by hurricanes on numerous occasions. Usually, these storms originate in the eastern Pacific Ocean, make landfall in the Mexican states of Baja California or Sonora, and dissipate before crossing into the United States. Thus, in most cases, it is only the tropical cyclones' remnant moisture that produces heavy rainfall—and in some occasions, flooding—in portions of Arizona. However, approximately every five years, a tropical cyclone retains sufficient strength to enter the state as a tropical storm or a tropical depression. Arizonans can expect indirect flash floods caused by the remnants of tropical cyclones to occur about every two years.[1]

Tropical cyclones in Arizona are not common, since the predominant wind pattern steers most storms that form in the Eastern Pacific either parallel or away from the Pacific coast of northwestern Mexico. As a result, most storms that could affect Arizona are carried away from the United States, with only 6% of all Pacific hurricanes entering US territory.[2] Not all Arizona hurricanes originate from the Pacific Ocean, however; an Atlantic hurricane in 2008 produced rainfall in the eastern portion of the state, and another Atlantic storm reached Arizona as a tropical depression. Many, but not all, of these systems also impacted California.

Despite their rarity, hurricanes are among Arizona's most significant weather makers. In years when Arizona is affected by a tropical cyclone, these can be responsible for up to 25% of the rainfall in areas along the Colorado River. Arizona hurricanes are also responsible for torrential rains in localized areas, with the state's 24-hour rainfall record—11.97 inches (304 mm) of precipitation[3]—occurring during Hurricane Nora's landfall in 1997. The heavy rainfall can trigger extensive flash floods, such as the ones produced by the remnants of Tropical Storm Octave in 1983, or the lingering moisture from Tropical Storm Emilia in 2006.

Contents

Climatology

Number of storms affecting Arizona
Month Number of storms
June
2
July
2
August
12
September
19
October
10

Tropical cyclones are not common over Arizona, but on average, a tropical storm or a tropical depression enters the state approximately every five years. However, indirect flash floods caused by the remnants of tropical cyclones are more common, as they tend to occur about every two years.[1]

Storms that approach the southwestern United States, and by extension Arizona, generally form closer to the Mexican shoreline than average, making them more likely to recurve northwards under the influence of an approaching trough. These troughs tend to extend farther to the south during the latter part of the Pacific hurricane season, in the period between late August and early October. These pronounced troughs thus produce a synoptic-scale flow that is conducive to steering hurricanes towards the southwestern United States.[4]

The infusions of tropical moisture from Arizona-bound tropical cyclones can be a significant portion of the rainfall in the region. In years when hurricanes approach Arizona, eastern and northern portions of the state receive on average 6–8% of the monsoon-season precipitation from tropical systems and their remnants. This percentage rises towards the southwestern corner of the state, which can receive up to a quarter of its monsoon-season rainfall from tropical cyclones.[4]

Storms

Tropical storms are one of Arizona's main sources of rainfall, as they infuse the monsoon over the southwestern United States with moisture, producing large-scale floods in occasions.[5] However, all of the storms that have impacted Arizona have formed in the latter parts of the Pacific hurricane season, and only storm remnants have affected the state before August.[2]

Saffir–Simpson Hurricane Scale
Category Wind speed Storm surge
mph
(km/h)
(kn)
ft
(m)
Five ≥ 156
(≥ 250)
(≥ 136)
> 18
(> 5.5)
Four 131–155
(210–249)
(114–135)
13–18
(4.0–5.5)
Three 111–130
(178–209)
(96–113)
9–12
(2.7–3.7)
Two 96–110
(154–177)
(83–95)
6–8
(1.8–2.4)
One 74–95
(119–153)
(64–82)
4–5
(1.2–1.5)
Additional classifications
Tropical
storm
39–73
(63–117)
(35–63)
0–3
(0–0.9)
Tropical
depression
0–38
(0–62)
(0–34)
0
(0)
Chronology of tropical cyclones in Arizona
Storm Peak intensity Season Intensity Date[6]
Unnamed[7] &10000000000000000000000 Unknown 1921 &10000000000000001000000 Remnant low 01921-08-20August 20, 1921
Unnamed[8] &10000000000000000000000 Unknown 1921 &10000000000000010000000 Tropical depression 01921-09-30September 30, 1921
Unnamed[6] &10000000000000000000000 Unknown 1926 &10000000000000001000000 Remnant low 01926-09-20September 20, 1926
Unnamed[6] &10000000000000000000000 Unknown 1927 &10000000000000001000000 Remnant low 01927-09-07September 7, 1927
One[9] &10000000000000100000000 Category 1[9] 1929 &10000000000000020000000 Tropical depression 01929-06-30June 30, 1929
Unnamed[10] &10000000000000000000000 Unknown 1935 &10000000000000020000000 Tropical storm 01935-08-22August 22, 1935
Unnamed[11] &10000000000000020000000 Tropical storm[12] 1951 &10000000000000020000000 Tropical storm 01951-08-03August 3, 1951
Unnamed[11] &10000000000000100000000 Category 1[12] 1958 &10000000000000020000000 Tropical storm 01958-10-06October 6, 1958
Claudia[6] &10000000000000020000000 Tropical storm[12] 1962 &10000000000000020000000 Tropical storm 01962-09-25September 25, 1962
Tillie[10] &10000000000000020000000 Tropical storm[12] 1964 &10000000000000001000000 Remnant low 01964-09-09September 9, 1964
Emily[11] &10000000000000100000000 Category 1[12] 1965 &10000000000000001000000 Remnant low 01965-09-06September 6, 1965
Kirsten[13] &10000000000000020000000 Tropical storm[12] 1967 &10000000000000001000000 Remnant low 01967-09-29September 29, 1967
Katrina[6] &10000000000000100000000 Category 1[12] 1967 &10000000000000020000000 Tropical storm 01967-08-29August 29, 1967
Hyacinth[11] &10000000000000020000000 Tropical storm[12] 1968 &10000000000000010000000 Tropical depression 01968-08-20August 20, 1968
Pauline[14] &10000000000000100000000 Category 1[12] 1968 &10000000000000001000000 Remnant low 01968-10-03October 3, 1968
Norma[6] &10000000000000020000000 Tropical storm[12] 1970 &10000000000000001000000 Remnant low 01970-09-04September 4, 1970
Irene-Olivia[15] &10000000000000300000000 Category 3[12] 1971 &10000000000000001000000 Remnant low 01971-10-01October 1, 1971
Joanne[6] &10000000000000200000000 Category 2[12] 1972 &10000000000000010000000 Tropical storm 01972-10-04October 4, 1972
Kathleen[6] &10000000000000100000000 Category 1[12] 1976 &10000000000000020000000 Tropical storm 01976-09-10September 10, 1976
Liza[16] &10000000000000400000000 Category 4[12] 1976 &10000000000000001000000 Remnant low 01976-10-02October 2, 1976
Doreen[6] &10000000000000100000000 Category 1[12] 1977 &10000000000000020000000 Tropical storm 01977-08-13August 13, 1977
Heather[6] &10000000000000100000000 Category 1[12] 1977 &10000000000000010000000 Tropical depression 01977-10-04October 4, 1977
Octave[6] &10000000000000020000000 Tropical storm[12] 1983 &10000000000000020000000 Tropical storm 01983-09-28September 28, 1983
Norbert[17] &10000000000000400000000 Category 4[12] 1984 &10000000000000010000000 Tropical depression 01984-09-25September 25, 1984
Polo[18] &10000000000000300000000 Category 3[12] 1984 &10000000000000001000000 Remnant low 01984-10-03October 3, 1984
Raymond[11] &10000000000000300000000 Category 3[12] 1989 &10000000000000010000000 Tropical depression 01989-10-05October 5, 1989
Boris[19] &10000000000000100000000 Category 1[12] 1990 &10000000000000001000000 Remnant low[19] 01990-06-11June 11, 1990
Lester[11] &10000000000000100000000 Category 1[20] 1992 &10000000000000020000000 Tropical storm 01992-08-22August 22, 1992
Hilary[21] &10000000000000300000000 Category 3[12] 1993 &10000000000000001000000 Remnant low 01993-08-27August 27, 1993
Flossie[22] &10000000000000100000000 Category 1[12] 1995 &10000000000000001000000 Remnant low 01995-08-11August 11, 1995
Ismael[11] &10000000000000100000000 Category 1[12] 1995 &10000000000000001000000 Remnant low 01995-09-15September 15, 1995
Nora[6] &10000000000000400000000 Category 4[12] 1997 &10000000000000020000000 Tropical storm 01997-09-25September 25, 1997
Frank[23] &10000000000000020000000 Tropical storm[12] 1998 &10000000000000001000000 Remnant low 01998-08-09August 9, 1998
Isis[24] &10000000000000100000000 Category 1[12] 1998 &10000000000000001000000 Remnant low 01998-09-05September 5, 1998
Olivia[25] &10000000000000020000000 Tropical storm[12] 2000 &10000000000000001000000 Remnant low 02000-10-11October 11, 2000
Juliette[26] &10000000000000400000000 Category 4[12] 2001 &10000000000000001000000 Remnant low 02001-10-03October 3, 2001
Ignacio[27] &10000000000000200000000 Category 2[12] 2003 &10000000000000001000000 Remnant low 02003-08-25August 25, 2003
Marty[11] &10000000000000200000000 Category 2[12] 2003 &10000000000000001000000 Remnant low 02003-09-22September 22, 2003
Javier[28] &10000000000000400000000 Category 4[12] 2004 &10000000000000001000000 Remnant low 02004-09-20September 20, 2004
Emilia[29] &10000000000000020000000 Tropical storm[12] 2006 &10000000000000001000000 Remnant low 02006-07-25July 25, 2006
John[30] &10000000000000400000000 Category 4[12] 2006 &10000000000000001000000 Remnant low 02006-09-05September 5, 2006
Henriette[31] &10000000000000100000000 Category 1[12] 2007 &10000000000000001000000 Remnant low 02007-09-06September 6, 2007
Dolly[16] &10000000000000200000000 Category 2[12] 2008 &10000000000000001000000 Remnant low 02008-07-28July 28, 2008
Julio[32] &10000000000000020000000 Tropical storm[12] 2008 &10000000000000001000000 Remnant low 02008-08-25August 25, 2008
Jimena[33] &10000000000000400000000 Category 4[12] 2009 &10000000000000001000000 Remnant low 02009-09-05September 5, 2009

Storm systems

Wettest tropical cyclones, and their remnants, in Arizona
Highest known recorded totals
Precipitation Storm Measurement
station
Rank (mm) (in)
1 305.1 mm 12.01 in Nora 1997 Harquahala Mountain[16]
2 304.8 mm 12.00 in Octave 1983 Mount Graham[16]
3 210.8 mm 8.30 in Heather 1977 Nogales[16]
4 178.1 mm 7.01 in Doreen 1977 Yuma Valley[16]
5 177.8 mm 7.00 in Javier 2004 Walnut Creek[16]
6 133.9 mm 5.27 in Lester 1992 Irving[16]
7 96.0 mm 3.78 in Raymond 1989 Santa Rita Experiment Range[16]
8 83.3 mm 3.28 in Boris 1990 Santa Rita Experiment Range[16]
9 72.9 mm 2.87 in Kathleen 1976 Davis Dam #2[16]
10 71.9 mm 2.83 in Marty 2003 Organ Pipe Cactus National Monument[16]

Several of these tropical cyclones have caused deaths or heavy property damage, usually due to flooding caused by rain.

Before 1960

Records of tropical cyclones in the East Pacific before 1950 are sparse, but there were still several storms that produced rainfall over Arizona in this period.

1960s

1970s

1980s

The 1980s saw destructive tropical cyclones pass through the state, as was the case with the previous decade.

1990s

During the 1990s, several tropical systems affected Arizona even after losing all tropical characteristics. However, two hurricanes survived long enough to reach Arizona while still considered tropical systems.

2000s

The last decade saw no storms reach Arizona while retaining tropical characteristics; however, numerous remnant lows caused heavy rainfall and flooding throughout the state.

See also

References

  1. ^ a b National Weather Service, Tucson Regional Office. "Tropical cyclones in Arizona". http://www.wrh.noaa.gov/twc/tropical/tropical.php. Retrieved 2011-07-21. 
  2. ^ a b Corbosiero, Kristen L. (2003). "The Contribution of Eastern North Pacific Tropical Cyclones to the Warm Season Rainfall Climatology of the Southwestern United States". University of Albany. http://www.atmos.ucla.edu/~kristen/monsoon/monsoon.html. Retrieved 2011-07-23. 
  3. ^ a b c Flood Control District of Maricopa County (1997). "TS Nora Storm Report". http://156.42.96.39/alert/nora/nora_rpt.html. Retrieved 2006-02-26. 
  4. ^ a b Corbosiero, Kristen L.; Dickinson, Michael J., Bosart, Lance F. (August 2009). "The Contribution of Eastern North Pacific Tropical Cyclones to the Rainfall Climatology of the Southwest United States". Monthly Weather Review 137 (8): 2415–2435. Bibcode 2009MWRv..137.2415C. doi:10.1175/2009MWR2768.1. 
  5. ^ a b Arizona Water Science Center (September 2005). "Hydrologic Conditions in Arizona During 1999–2004: A Historical Perspective" (PDF). United States Geological Survey. http://pubs.usgs.gov/fs/2005/3081/pdf/FS2005-3081WEB.pdf. Retrieved 2006-03-20. 
  6. ^ a b c d e f g h i j k l m n o p q r s t u v w National Weather Service, Phoenix Regional Office. "Top Arizona Hurricane/Tropical Storm Events". http://www.wrh.noaa.gov/psr/tropics/hurricanes.htm. Retrieved 2006-03-19. 
  7. ^ a b c d e Williams, Jack (May 17, 2005). "Background: California's tropical storms". USA Today. http://www.usatoday.com/weather/whhcalif.htm. Retrieved 2008-05-16. 
  8. ^ a b Hurd, Willis E. (February 1929). "Tropical Cyclones of the Eastern North Pacific Ocean" (PDF). Monthly Weather Review 57 (2). http://docs.lib.noaa.gov/rescue/mwr/057/mwr-057-02-0043.pdf. Retrieved 2008-05-16. 
  9. ^ Hurricane Research Division (August 2011). "Atlantic hurricane best track (Hurdat)". National Oceanic and Atmospheric Administration. http://www.aoml.noaa.gov/hrd/hurdat/tracks1851to2010_atl_reanal.html. Retrieved 2011-09-19. 
  10. ^ a b c d e f g h i U.S. Army Corps of Engineers. "Santa Cruz River, Paseo de las Iglesias (Pima County, Arizona) Final Feasibility Report and Environmental Impact Statement" (PDF). USACE. http://rfcd.pima.gov/largefiles/pdli2/appxa.pdf. Retrieved 2011-07-21. 
  11. ^ a b c d e f g h i j k Coastal Services Center. "Historical Hurricane Tracks". National Oceanic and Atmospheric Administration. http://hurricane.csc.noaa.gov/hurricanes/viewer.html. Retrieved 2006-03-20. 
  12. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al National Hurricane Center, Hurricane Research Division (2007). "East Pacific hurricane best track ("HURDAT"), 1949–2007". National Oceanographic and Atmospheric Administration. Archived from the original on 2008-04-27. http://web.archive.org/web/20080427145201/http://www.nhc.noaa.gov/tracks1949to2007_epa.txt. Retrieved 2008-05-15. 
  13. ^ a b National Weather Service, Tucson Regional Office. "Hurricane Kirsten 1966". http://www.wrh.noaa.gov/twc/tropical/kirsten_1966.htm. Retrieved 2011-07-21. 
  14. ^ a b National Weather Service, Tucson Regional Office. "Hurricane Pauline 1968". http://www.wrh.noaa.gov/twc/tropical/pauline_1968.htm. Retrieved 2011-07-21. 
  15. ^ a b National Weather Service, Tucson Regional Office. "Hurricane Olivia 1971". http://www.wrh.noaa.gov/twc/tropical/olivia_1971.htm. Retrieved 2011-07-21. 
  16. ^ a b c d e f g h i j k l m n o p Roth, David (2008). "Tropical Cyclone Rainfall for the West". Tropical Cyclone Rainfall Climatology. Hydrometeorological Prediction Center. http://www.hpc.ncep.noaa.gov/tropical/rain/tcwest.html. Retrieved 2008-05-15. 
  17. ^ a b National Weather Service, Tucson Regional Office. "Hurricane Norbert 1984". http://www.wrh.noaa.gov/twc/tropical/norbert_1984.htm. Retrieved 2011-07-21. 
  18. ^ a b National Weather Service, Tucson Regional Office. "Hurricane Polo 1984". http://www.wrh.noaa.gov/twc/tropical/polo_1984.htm. Retrieved 2011-07-21. 
  19. ^ a b c Roth, David (2008). "Hurricane Boris — June 7–11, 1990". Tropical Cyclone Rainfall Climatology. Hydrometeorological Prediction Center. http://www.hpc.ncep.noaa.gov/tropical/rain/boris1990.html. Retrieved 2008-05-15. 
  20. ^ National Hurricane Center (1992). "Preliminary Report: Hurricane Lester, 20–24 August 1992". National Oceanographic and Atmospheric Administration. http://www.nhc.noaa.gov/archive/storm_wallets/epacific/ep1992-prelim/lester/. Retrieved 2006-03-20. 
  21. ^ a b National Weather Service, Tucson Regional Office. "Hurricane Hilary 1993". http://www.wrh.noaa.gov/twc/tropical/hilary_1993.htm. Retrieved 2011-07-21. 
  22. ^ a b Associated Press (1995-08-13). "1 dead in storm flooding Tucson". Los Angeles Times. http://articles.latimes.com/1995-08-12/news/mn-34253_1_flood-kills-motorist. Retrieved 2011-01-31. 
  23. ^ a b United States Department of Agriculture (1998). "National Weather Summary". http://usda.mannlib.cornell.edu/usda/nass/WWNatSumm//1990s/1998/WWNatSumm-08-18-1998.txt. Retrieved 2007-02-21. 
  24. ^ a b Roth, David (2008). "Hurricane Isis — September 1–5, 1998". Tropical Cyclone Rainfall Climatology. Hydrometeorological Prediction Center. http://www.hpc.ncep.noaa.gov/tropical/rain/isis1998.html. Retrieved 2008-05-15. 
  25. ^ a b National Weather Service, Tucson Regional Office. "Tropical Storm Olivia 2000". http://www.wrh.noaa.gov/twc/tropical/olivia_2000.htm. Retrieved 2011-07-21. 
  26. ^ a b David Roth (2011). "Tropical Cyclone Point Maxima". Hydrometeorological Prediction Center. http://www.hpc.ncep.noaa.gov/tropical/rain/tcmaxima.html. Retrieved 2011-07-22. 
  27. ^ a b National Weather Service, Tucson Regional Office. "Hurricane Ignacio 2003". http://www.wrh.noaa.gov/twc/tropical/ignacio_2003.htm. Retrieved 2011-07-21. 
  28. ^ a b Roth, David (2008). "Hurricane Javier — September 18–21, 2004". Tropical Cyclone Rainfall Climatology. Hydrometeorological Prediction Center. http://www.hpc.ncep.noaa.gov/tropical/rain/javier2004.html. Retrieved 2008-05-15. 
  29. ^ a b National Weather Service, Tucson Regional Office (2006). "Review of July 25, 2006 Severe thunderstorm and Flash flood event". http://www.wrh.noaa.gov/twc/stormreviews/2006July25.php. Retrieved 2011-07-23. 
  30. ^ a b National Weather Service, Tucson Regional Office. "Hurricane John 2006". http://www.wrh.noaa.gov/twc/tropical/john_2006.htm. Retrieved 2011-07-21. 
  31. ^ a b National Weather Service, Tucson Regional Office. "Hurricane Henriette 2007". http://www.wrh.noaa.gov/twc/tropical/henriette_2007.htm. Retrieved 2011-07-21. 
  32. ^ a b c Alyson Zepeda and Megan Boehnke (2008-08-26). "Monsoon storm brings rain, wind, thunder". The Arizona Republic. http://www.azcentral.com/community/gilbert/articles/2008/08/26/20080826abrk-weather.html. Retrieved 2008-08-28. 
  33. ^ a b "Event Report for Arizona: 5 Miles North of Walapai". National Climatic Data Center. 2010. http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~784960. Retrieved 2011-07-01. 
  34. ^ Christopher W. Landsea; et al. (May 2011). "A Reanalysis of the 1921 to 1930 Atlantic Hurricane Database" (PDF). Atlantic Oceanographic and Meteorological Laboratory. p. 34. http://www.aoml.noaa.gov/hrd/Landsea/19211930jc-main.pdf. Retrieved 2011-07-21. 
  35. ^ Green, Raymond, A. (December 1964). "The Weather and Circulation of September 1964". Monthly Weather Review 92 (12): 601–606. Bibcode 1964MWRv...92..601G. doi:10.1175/1520-0493(1964)092<0601:TWACOS>2.3.CO;2. 
  36. ^ a b National Weather Service, Tucson Regional Office. "Hurricane Katrina 1967". http://www.wrh.noaa.gov/twc/tropical/katrina_1967.htm. Retrieved 2011-07-21. 
  37. ^ Wagner, A. James. (December 1967). "The Weather and Circulation of September 1967". Monthly Weather Review 95 (12): 956–966. Bibcode 1967MWRv...95..956W. doi:10.1175/1520-0493(1967)095<0956:AMOCRW>2.3.CO;2. 
  38. ^ Denney, William J. (March 1969). "The Eastern Pacific Hurricane Season of 1968". Monthly Weather Review 97 (3): 207–224. Bibcode 1969MWRv...97..207D. doi:10.1175/1520-0493(1969)097<0207:TEPHSO>2.3.CO;2. 
  39. ^ "Event Report for Arizona: Maricopa County". National Climatic Data Center. 1968. http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~5557. Retrieved 2011-07-21. 
  40. ^ National Weather Service, Tucson Regional Office. "Tropical Storm Norma 1970". http://www.wrh.noaa.gov/twc/tropical/norma_1970.htm. Retrieved 2011-07-21. 
  41. ^ Robert E. Taubensee (December 1971). "Weather and Circulation of September 1971" (PDF). Monthly Weather Review (American Meteorological Society) 99 (12): 986. http://ams.allenpress.com/perlserv/?request=res-loc&uri=urn%3Anoaa%3Apdf%3Afile%3Amwr-099-12-0980.pdf. Retrieved 2009-06-07. 
  42. ^ Staff writer (September 30, 1971). "90-MPH Hurricane Hits North Carolina, Causes Floods, Power Outages". The Blade: p. 4. http://news.google.com/newspapers?id=nclOAAAAIBAJ&sjid=3AEEAAAAIBAJ&dq=hurricane%20olivia%20west&pg=7460%2C4939994. Retrieved 2011-07-21. 
  43. ^ Loren Listiak (September 29, 1971). "Heavy Storm Sneaks Into Town". The Yuma Daily Sun. 
  44. ^ Pinal County Public Works. "Summary of Historical Hazards Impacting Pinal County Communities" (PDF). http://ci.show-low.az.us/departments/public_works/MultiHazardMitigationPlan/Appendix%20F/HistoricalHazards_Navajo.pdf. Retrieved 2009-06-14. 
  45. ^ National Weather Service, Tucson Regional Office. "Hurricane Joanne 1972". http://www.wrh.noaa.gov/twc/tropical/joanne_1972.htm. Retrieved 2011-07-21. 
  46. ^ National Weather Service, Tucson Regional Office. "Hurricane Kathleen 1976". http://www.wrh.noaa.gov/twc/tropical/kathleen_1976.htm. Retrieved 2011-07-21. 
  47. ^ Roth, David (2008). "Hurricane Kathleen — September 7–12, 1976". Tropical Cyclone Rainfall Climatology. Hydrometeorological Prediction Center. http://www.hpc.ncep.noaa.gov/tropical/rain/kathleen1976.html. Retrieved 2008-05-15. 
  48. ^ Roth, David (2008). "Hurricane Doreen — August 15–18, 1977". Tropical Cyclone Rainfall Climatology. Hydrometeorological Prediction Center. http://www.hpc.ncep.noaa.gov/tropical/rain/doreen1977.html. Retrieved 2008-05-15. 
  49. ^ Roth, David (2008). "Hurricane Heather — October 5–8, 1977". Tropical Cyclone Rainfall Climatology. Hydrometeorological Prediction Center. http://www.hpc.ncep.noaa.gov/tropical/rain/heather1977.html. Retrieved 2008-05-15. 
  50. ^ National Weather Service, Tucson Regional Office. "Hurricane Heather 1977". http://www.wrh.noaa.gov/twc/tropical/heather_1977.htm. Retrieved 2011-07-21. 
  51. ^ Roth, David (2008). "Remains of Octave — September 29-October 4, 1983". Tropical Cyclone Rainfall Climatology. Hydrometeorological Prediction Center. http://www.hpc.ncep.noaa.gov/tropical/rain/octave1983.html. Retrieved 2008-05-15. 
  52. ^ National Hurricane Center (1989). "Preliminary Report: Hurricane Raymond, 25 September–5 October 1989". National Oceanographic and Atmospheric Administration. http://www.nhc.noaa.gov/archive/storm_wallets/epacific/ep1989-prelim/raymond/. Retrieved 2008-05-15. 
  53. ^ Roth, David (2008). "Hurricane Raymond — October 4–7, 1989". Tropical Cyclone Rainfall Climatology. Hydrometeorological Prediction Center. http://www.hpc.ncep.noaa.gov/tropical/rain/raymond1989.html. Retrieved 2008-05-15. 
  54. ^ National Weather Service, Tucson Regional Office. "Hurricane Raymond 1989". http://www.wrh.noaa.gov/twc/tropical/raymond_1989.htm. Retrieved 2011-07-21. 
  55. ^ a b Roth, David (2008). "Hurricane Lester — August 19–27, 1992". Tropical Cyclone Rainfall Climatology. Hydrometeorological Prediction Center. http://www.hpc.ncep.noaa.gov/tropical/rain/lester1992.html. Retrieved 2008-05-15. 
  56. ^ a b National Weather Service, Tucson Regional Office. "Hurricane Lester 1992". http://www.wrh.noaa.gov/twc/tropical/lester_1992.htm. Retrieved 2011-07-21. 
  57. ^ "Event Report for Arizona: Pima County". National Climatic Data Center. 1995. http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~189430. Retrieved 2011-01-31. 
  58. ^ Roth, David (2008). "Hurricane Ismael — September 12–17, 1995". Tropical Cyclone Rainfall Climatology. Hydrometeorological Prediction Center. http://www.hpc.ncep.noaa.gov/tropical/rain/ismael1995.html. Retrieved 2008-05-15. 
  59. ^ Farfán, Luis M.; Zehnder, Joseph A. (August 2001). "An Analysis of the Landfall of Hurricane Nora (1997)". Monthly Weather Review 129 (8): 2073–2088. Bibcode 2001MWRv..129.2073F. doi:10.1175/1520-0493(2001)129<2073:AAOTLO>2.0.CO;2. 
  60. ^ Carter, Rebecca (2002). "Tropical Storm Impacts on Arizona and New Mexico" (PDF). Climate Assessment for the Southwest Project, Institute for the Study of Planet Earth, University of Arizona. Archived from the original on 2006-09-26. http://web.archive.org/web/20060926225918/http://www.ispe.arizona.edu/climas/forecasts/articles/tropical_Aug2002.pdf. Retrieved 2006-03-03. 
  61. ^ National Weather Service, Tucson Regional Office. "Hurricane Nora 1997". http://www.wrh.noaa.gov/twc/tropical/nora_1997.htm. Retrieved 2011-07-21. 
  62. ^ National Drought Mitigation Center. "Reported Effects of the 1997–98 El Niño" (PDF). University of Nebraska-Lincoln. Archived from the original on 2009-03-04. http://web.archive.org/web/20090304213132/http://www.drought.unl.edu/whatis/elninoanalysis.pdf. Retrieved 2006-02-26. 
  63. ^ "Isis fizzles but makes for a wet Arizona weekend". Associated Press. 1998-09-05. 
  64. ^ Glueck (1998). "September 1998 climate report for Tucson". Tucson, Arizona National Weather Service. http://www.wrh.noaa.gov/twc/climate/monthly/sep98.php. Retrieved 2007-02-08. 
  65. ^ National Weather Service, Tucson Regional Office. "Tropical Storm Juliette 2001". http://www.wrh.noaa.gov/twc/tropical/juliette_2001.htm. Retrieved 2011-07-21. 
  66. ^ Roth, David (2008). "Hurricane Marty — September 21–26, 2003". Tropical Cyclone Rainfall Climatology. Hydrometeorological Prediction Center. http://www.hpc.ncep.noaa.gov/tropical/rain/marty2003.html. Retrieved 2008-05-15. 
  67. ^ Rippey, Brad (September 21, 2004). "U.S. Drought Monitor". United States Department of Agriculture. http://droughtmonitor.unl.edu/archive/2004/drmon0921.htm. Retrieved 2011-08-02. 
  68. ^ Swedlund, Eric (September 19, 2004). "Tucson area gets welcome soaking". The Arizona Daily Star. Archived from the original on 2007-09-29. http://web.archive.org/web/20070929091307/http://www.azstarnet.com/sn/monsoon/39628. Retrieved 2010-09-11. 
  69. ^ National Weather Service, Tucson Regional Office (2006). "Review of July 26, 2006 Severe thunderstorm and Flash flood event". http://www.wrh.noaa.gov/twc/stormreviews/2006July26.php. Retrieved 2011-07-23. 
  70. ^ National Weather Service, Tucson Regional Office (2006). "Review of July 31, 2006 Extreme Flooding event across SE Arizona including Tucson metro". http://www.wrh.noaa.gov/twc/stormreviews/2006July31.php. Retrieved 2011-07-23. 
  71. ^ "Event Report for Arizona: 1 Mile South of Sun Lakes". National Climatic Data Center. 2008. http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~692211. Retrieved 2009-01-19. 
  72. ^ "Event Report for Arizona: Bullhead City Airport". National Climatic Data Center. 2010. http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~784961. Retrieved 2011-07-01. 
  73. ^ "Event Report for Arizona: 3 Miles West North West of Golden Valley". National Climatic Data Center. 2010. http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~784963. Retrieved 2011-07-02. 
  74. ^ "Event Report for Arizona: 6 Miles South of Riviera". National Climatic Data Center. 2010. http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~785018. Retrieved 2011-07-01. 
  75. ^ "Event Report for Arizona: 5 Miles North of Mohave Valley". National Climatic Data Center. 2010. http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~785019. Retrieved 2011-07-01. 
  76. ^ "Event Report for Arizona: 6 Miles West North West of Phoenix Deer Valley Airport". National Climatic Data Center. 2010. http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~784930. Retrieved 2011-07-01. 
  77. ^ "Event Report for Arizona: 1 Mile North West of Sedona". National Climatic Data Center. 2010. http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~784995. Retrieved 2011-07-01. 
  78. ^ "Event Report for Arizona: Prescott Airport". National Climatic Data Center. 2010. http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~784996. Retrieved 2011-07-01. 
  79. ^ "Event Report for Arizona: 1 Mile East of Quartzsite Airport". National Climatic Data Center. 2010. http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~785065. Retrieved 2011-07-01. 
  80. ^ "Event Report for Arizona: 1 Mile West South West of Colfred". National Climatic Data Center. 2010. http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~785062. Retrieved 2011-07-01. 
  81. ^ "Event Report for Arizona: 1 Mile East North East of Yuma". National Climatic Data Center. 2010. http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwevent~ShowEvent~785063. Retrieved 2011-07-01.