Hurricane Hernan (2008): Difference between revisions
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Late on [[July 31]], a well defined area of low pressure developed into a tropical wave while located to the south-west of [[Mexico]]. The wave became less organized over the next two days as it slowly moved towards the north-northwest. On [[August 4]], the wave became very disorganized and relocated to the south and east of it's previous location. Over the next few days, the wave became better organized and by [[August 6]], the National Hurricane Center determined that the system had developed enough convection to be declared ''Tropical Depression Nine-E'' while located {{convert|700|nmi|km|abbr=on|lk=on}} to the west of [[Cabo San Lucas, Mexico]] <ref name="PA1"/> |
Late on [[July 31]], a well defined area of low pressure developed into a tropical wave while located to the south-west of [[Mexico]]. The wave became less organized over the next two days as it slowly moved towards the north-northwest. On [[August 4]], the wave became very disorganized and relocated to the south and east of it's previous location. Over the next few days, the wave became better organized and by [[August 6]], the National Hurricane Center determined that the system had developed enough convection to be declared ''Tropical Depression Nine-E'' while located {{convert|700|nmi|km|abbr=on|lk=on}} to the west of [[Cabo San Lucas, Mexico]] <ref name="PA1"/> |
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Tropical Depression Nine-E was being influenced by a subtropical-ridge located over Mexico, causing it to move at a quick pace of {{convert|16|mph|km/h|abbr=on|lk=on}} to the north-west. The depression was upgraded to ''Tropical Storm Hernan'' overnight as the storm became more organized. Although Hernan was located over warm waters, moderate wind shear prevented the storm from intensifying quickly as it continued towards the west-northwest at a slightly slower pace.<ref>{{cite web|author=Brown|title=Tropical Storm Hernan Discussion Two|year=2008|publisher=National Hurricane Center|accessdate=2008-08-31|url=http://www.nhc.noaa.gov/archive/2008/ep09/ep092008.discus.002.shtml?}}</ref> |
Tropical Depression Nine-E was being influenced by a subtropical-ridge located over Mexico, causing it to move at a quick pace of {{convert|16|mph|km/h|abbr=on|lk=on}} to the north-west. The depression was upgraded to ''Tropical Storm Hernan'' overnight as the storm became more organized. Although Hernan was located over warm waters, moderate wind shear prevented the storm from intensifying quickly as it continued towards the west-northwest at a slightly slower pace. It became a hurricane by August 9 and a major hurricane by the 10th. It then moved into colder waters and dissipated by the 13th.<ref>{{cite web|author=Brown|title=Tropical Storm Hernan Discussion Two|year=2008|publisher=National Hurricane Center|accessdate=2008-08-31|url=http://www.nhc.noaa.gov/archive/2008/ep09/ep092008.discus.002.shtml?}}</ref> |
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Revision as of 23:44, 31 August 2008
| Category 3 major hurricane (SSHWS/NWS) | |
 Hurricane Hernan near peak strength | |
| Formed | August 6 2008 |
|---|---|
| Dissipated | August 13 2008 |
| Highest winds | 1-minute sustained: 120 mph (195 km/h) |
| Lowest pressure | 956 mbar (hPa); 28.23 inHg |
| Fatalities | None |
| Damage | None |
| Areas affected | None |
| Part of the 2008 Pacific hurricane season | |
Hurricane Hernan was the ninth tropical cyclone, eighth named storm, fifth hurricane, and first major hurricane of the 2008 Pacific hurricane season. Hernan developed out of a tropical wave which formed to the south-west of Mexico late on July 31. The wave moved erratically over the next five days before becoming better organized. On August 6, the wave had gained enough convection and developed a surface low pressure and was declared Tropical Depression Nine-E.[1]. The depression was upgraded to Tropical Storm Hernan on the next advisory as it moved towards west-northwest. [2] Hernan continued to intensify as it moved over the open waters of the Eastern Pacific, reaching hurricane status on August 8. [3] Hernan continued to intensify until it reached it's peak of 120 mph (190 km/h) on August 9 as a major hurricane. [4] As Hernan continued towards the west, it entered an area less favorable for development and began to weaken. Hernan slowly weakened for several days before being downgraded to a tropical depression on August 13. The final advisory by the National Hurricane Center was issued shortly after.
Storm history
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 depressionLate on July 31, a well defined area of low pressure developed into a tropical wave while located to the south-west of Mexico. The wave became less organized over the next two days as it slowly moved towards the north-northwest. On August 4, the wave became very disorganized and relocated to the south and east of it's previous location. Over the next few days, the wave became better organized and by August 6, the National Hurricane Center determined that the system had developed enough convection to be declared Tropical Depression Nine-E while located 700 nmi (1,300 km) to the west of Cabo San Lucas, Mexico [1]
Tropical Depression Nine-E was being influenced by a subtropical-ridge located over Mexico, causing it to move at a quick pace of 16 mph (26 km/h) to the north-west. The depression was upgraded to Tropical Storm Hernan overnight as the storm became more organized. Although Hernan was located over warm waters, moderate wind shear prevented the storm from intensifying quickly as it continued towards the west-northwest at a slightly slower pace. It became a hurricane by August 9 and a major hurricane by the 10th. It then moved into colder waters and dissipated by the 13th.[5]
Impact
Hernan remained out over open waters for the duration of it's life and had no impact on land.
References
- ^ a b Knabb (2008). "Tropical Depression Nine-E Public Advisory One". National Hurricane Center. Retrieved 2008-08-30.
- ^ Brown (2008). "Tropical Storm Hernan Public Advisory Two". National Hurricane Center. Retrieved 2008-08-30.
- ^ Knabb/Kimberlain (2008). "Hurricane Hernan Public Advisory Eight". National Hurricane Center. Retrieved 2008-08-30.
- ^ Knabb (2008). "Hurricane Hernan Public Advisory Twelve". National Hurricane Center. Retrieved 2008-08-30.
- ^ Brown (2008). "Tropical Storm Hernan Discussion Two". National Hurricane Center. Retrieved 2008-08-31.
Tropical cyclones of the 2008 Pacific hurricane season | ||
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