User:IPhonehurricane95/sandbox/Joanne
| Category 2 hurricane (SSHWS/NWS) | |
 Hurricane Joanne to the south of Mexico | |
| Formed | September 30 |
|---|---|
| Dissipated | October 6 |
| Highest winds | 1-minute sustained: 100 mph (155 km/h) |
| Lowest pressure | 971 mbar (hPa); 28.67 inHg |
| Fatalities | 0 |
| Damage | Minimal |
| Areas affected | Mexico (especially Baja California), and the Western United States |
| Part of the 1972 Pacific hurricane season | |
Hurricane Joanne was a weak Category 2 hurricane that formed in the September of 1972. The tenth named storm and final hurricane of the busy 1972 Pacific hurricane season, it formed from a westward-moving area of squalls south of Mexico organized into a tropical depression on September 30. It then strengthened into a tropical storm and was named Joanne. Joanne moved west northwest, and intensified into a hurricane on October 1. It then peaked as a Category 2 hurricane on October 2. Joanne then slowed down and began to recurve, first to the north, and then the north northeast. While accelerating in that direction, Joanne made landfall near Laguna Chapala on the Baja California Peninsula as a tropical storm. Joanne managed to retain a closed circulation and bring tropical storm force winds to Arizona, the first recorded time that had happened.[1] The tropical storm dissipated inland over Sonora on October 7. Joanne is one of only four known Pacific hurricanes to bring gale-force winds to the Continental United States, and was the first since the 1939 California tropical storm.[2]
Heavy rainfall was reported throughout Arizona. Over 5 inches (100 mm) was measured at the Mogollon Rim. There was severe flooding in the areas of Clifton, Duncan, and Safford. Heavy rains were recorded elsewhere in the region.[1] The highest total in Mexico was 9.45 in (240 mm) in San Felipe/Mexicali.[3] Joanne caused heavy surf in California.[4] No deaths were attributed to this tropical cyclone. An exact cost of damage is unknown.
Meteorological history[edit]
Tropical storm (39–73 mph, 63–118 km/h)
Category 1 (74–95 mph, 119–153 km/h)
Category 2 (96–110 mph, 154–177 km/h)
Category 3 (111–129 mph, 178–208 km/h)
Category 4 (130–156 mph, 209–251 km/h)
Category 5 (≥157 mph, ≥252 km/h)
Unknown
Extratropical cyclone, remnant low, tropical disturbance, or monsoon depressionA westward-moving area of squalls that formed a tropical disturbance south of Guatemala on September 26th. The system moved briskly to the west, forming a closed circulation south of the Mexican Riviera by September 29th. The tropical depression continued to develop, becoming a tropical storm by September 30th. Moving at a more modest pace to the west-northwest, Joanne became a hurricane on October 1st well west of Mazatlan. [5]
Turning more to the north due to the influence of an upper trough, the system passed the subtropical ridge axis on October 4th and turned to the northeast towards northern Baja California. Moving over increasingly cooler water, Joanne weakened into a tropical storm west of Point Eugenia, striking northern Baja California on the night of the 5th before moving into Sonora. [5]
Joanne became extratropical shortly after it struck Baja California as a weak tropical storm. Hurricane Joanne's remnants produced very heavy rain across the Western United States, particularly around New Mexico, Arizona, Utah and Colorado. The highest rainfall for the United States was recorded at Sierra Ancha, Arizona, where almost 4.34 inches (110 mm) fell in that portion of the state. [3]
Impact[edit]
References[edit]
- ^ a b "...Top Arizona Hurricane/Tropical Storm Events..." Archived from the original on 2009-06-17. Retrieved 2009-06-09.
- ^ Michael Chenoweth & Christopher Landsea. "The San Diego Hurricane of 2 October 1858" (PDF). Bulletin of the American Meteorological Society. 85 (11): 1689–1697. Archived from the original on 2009-06-17. Retrieved 2009-06-09.
- ^ a b David M. Roth. "Hurricane Joanne - October 5–8, 1972" (GIF). Hydrometeorological Prediction Center. Archived from the original on 2009-08-16. Retrieved 2009-08-14.
- ^ "Calif. Desert Normal after Flash Floods" (PDF). Long Beach Press-Telegram. 1972-10-05. p. 17. Archived from the original on 2009-08-16. Retrieved 2009-08-14.
- ^ a b "Hurricane Joanne description" National Oceanic and Atmospheric Administration. Retrieved 1-4-12.
