Tropical Storm Miriam (2006): Difference between revisions
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'''Tropical Storm Miriam''' was a weak tropical storm that never affected land. The 15th [[tropical cyclone]] and 14th named storm of the [[2006 Pacific hurricane season]], Miriam developed from an area of disturbed weather associated with the [[Intertropical Convergence Zone]] on September 16. Despite being disorganized, the depression attained tropical storm status later that day, and peak intensity 12 hours later. The storm was [[wind shear|sheared]] throughout its life, and the center was almost constantly separated from what little convective activity there was. Entering cooler waters and further wind shear, it weakened to a tropical depression on September 18, and rapidly weakened. As the storm never approached land and only came close to shore as a remnant low, no damages or fatalities occurred. |
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'''Tropical Storm Miriam''' |
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==Storm history== |
==Storm history== |
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Miriam originated in a broad area of disturbed weather associated with the northern extension of the [[Intertropical Convergence Zone]] to the west of [[Hurricane Lane (2006)|Hurricane Lane]]. One system that was related to a [[tropical wave]] briefly organized, though quickly degenerated. A second disturbance formed on September 15, 2006 and developed into a distinct [[low pressure area]]. The low organized and gained in [[Atmospheric convection|convection]], and at 0000 UTC on September 16 it was designated as a tropical depression, several hundred miles southwest of [[Cabo San Lucas, Mexico|Cabo San Lucas]]. Embedded within steering currents of the low- to mid-level flow feeding into Hurricane Lane, the depression initially tracked gradually northeastward.<ref name="TCR">{{cite web|author=James L. Franklin|title=Tropical Storm Miriam Tropical Cyclone Report|year=2006|publisher=National Hurricane Center|accessdate=2008-09-16|url=http://www.nhc.noaa.gov/pdf/TCR-EP142006_Miriam.pdf}}</ref> |
Miriam originated in a broad area of disturbed weather associated with the northern extension of the [[Intertropical Convergence Zone]] to the west of [[Hurricane Lane (2006)|Hurricane Lane]]. One system that was related to a [[tropical wave]] briefly organized, though quickly degenerated. A second disturbance formed on September 15, 2006 and developed into a distinct [[low pressure area]]. The low organized and gained in [[Atmospheric convection|convection]], and at 0000 UTC on September 16 it was designated as a tropical depression, several hundred miles southwest of [[Cabo San Lucas, Mexico|Cabo San Lucas]]. Embedded within steering currents of the low- to mid-level flow feeding into Hurricane Lane, the depression initially tracked gradually northeastward.<ref name="TCR">{{cite web|author=James L. Franklin|title=Tropical Storm Miriam Tropical Cyclone Report|year=2006|publisher=National Hurricane Center|accessdate=2008-09-16|url=http://www.nhc.noaa.gov/pdf/TCR-EP142006_Miriam.pdf}}</ref> |
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Initially, [[ |
Initially, [[wind shear]] sheared the convection away from the center of circulation.<ref>{{cite web|author=Rhome/Knabb|title=Tropical Depression 14-E Discussion Number 1|year=2006|publisher=National Hurricane Center|accessdate=2008-09-16|url=http://www.nhc.noaa.gov/archive/2006/ep14/ep142006.discus.001.shtml?}}</ref> Despite an exposed center and waning convection, the [[National Hurricane Center]] upgraded the depression to Tropical Storm Miriam at 1200 UTC on September 16. The storm reached peak winds of {{convert|45|mph|km/h|abbr=on}} 12 hours later.<ref name="TCR"/> Shortly after being upgraded, thunderstorm activity began to increase, particularly on the southern side of the tropical storm. At the same time the cyclone took a slight northward jog.<ref>{{cite web|author=Fiorino/Stewart|title=Tropical Storm Miriam Discussion Number 4|year=2006|publisher=National Hurricane Center|accessdate=2008-09-16|url=http://www.nhc.noaa.gov/archive/2006/ep14/ep142006.discus.004.shtml?}}</ref> Persistent wind shear and a cool, unfavorable environment limited further intensification.<ref name="TCR"/> Midday on September 17, a ship a couple hundred miles to the southwest of the center reported sustained winds of {{convert|39|kn|mph km/h|abbr=on}}. However, giving the distance from the actual storm, the report was deemed inaccurate to base Miriam's estimated intensity at, and thus weakened to a minimal tropical depression, as convection continued to die out and move away from the exposed circulation center.<ref>{{cite web|author=Mainelli/Cangialosi|title=Tropical Storm Miriam Discussion Number 7|year=2006|publisher=National Hurricane Center|accessdate=2008-09-16|url=http://www.nhc.noaa.gov/archive/2006/ep14/ep142006.discus.007.shtml?}}</ref> A mid-level vorticity center was spawned off to the west of the low-level center later that day.<ref>{{cite web|author=Fiorino/Pasch|title=Tropical Storm Miriam Discussion Number 8|year=2006|publisher=National Hurricane Center|accessdate=2008-09-16|url=http://www.nhc.noaa.gov/archive/2006/ep14/ep142006.discus.008.shtml?}}</ref> |
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The cooler waters among other factors weakened Miriam to a tropical depression at 0600 UTC on September 18.<ref name="TCR"/> Just hours later the storm was deemed a remnant low, and the National Hurricane Center issued their last advisory what was then just a low-level swirl of clouds, stating little possibility or reorganization.<ref>{{cite web|author=Avila/Congialosi|title=Tropical Depression Miriam Discussion Number 10|year=2006|publisher=National Hurricane Center|accessdate=2008-09-16|url=http://www.nhc.noaa.gov/archive/2006/ep14/ep142006.discus.010.shtml?}}</ref> The system moved more towards the north and northwest for a time, before turning towards the northeast and dissipating just offshore of [[Baja California]].<ref name="TCR"/> |
The cooler waters among other factors weakened Miriam to a tropical depression at 0600 UTC on September 18.<ref name="TCR"/> Just hours later the storm was deemed a remnant low, and the National Hurricane Center issued their last advisory what was then just a low-level swirl of clouds, stating little possibility or reorganization.<ref>{{cite web|author=Avila/Congialosi|title=Tropical Depression Miriam Discussion Number 10|year=2006|publisher=National Hurricane Center|accessdate=2008-09-16|url=http://www.nhc.noaa.gov/archive/2006/ep14/ep142006.discus.010.shtml?}}</ref> The system moved more towards the north and northwest for a time, before turning towards the northeast and dissipating just offshore of [[Baja California]].<ref name="TCR"/> |
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Revision as of 00:39, 17 September 2008
| tropical storm (SSHWS/NWS) | |
 Miriam on September 17 | |
| Formed | September 16, 2006 |
|---|---|
| Dissipated | September 18, 2006 |
| Highest winds | 1-minute sustained: 45 mph (75 km/h) |
| Lowest pressure | 999 mbar (hPa); 29.5 inHg |
| Fatalities | None reported |
| Damage | None |
| Areas affected | None |
| Part of the 2006 Pacific hurricane season | |
Tropical Storm Miriam was a weak tropical storm that never affected land. The 15th tropical cyclone and 14th named storm of the 2006 Pacific hurricane season, Miriam developed from an area of disturbed weather associated with the Intertropical Convergence Zone on September 16. Despite being disorganized, the depression attained tropical storm status later that day, and peak intensity 12 hours later. The storm was sheared throughout its life, and the center was almost constantly separated from what little convective activity there was. Entering cooler waters and further wind shear, it weakened to a tropical depression on September 18, and rapidly weakened. As the storm never approached land and only came close to shore as a remnant low, no damages or fatalities occurred.
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 depressionMiriam originated in a broad area of disturbed weather associated with the northern extension of the Intertropical Convergence Zone to the west of Hurricane Lane. One system that was related to a tropical wave briefly organized, though quickly degenerated. A second disturbance formed on September 15, 2006 and developed into a distinct low pressure area. The low organized and gained in convection, and at 0000 UTC on September 16 it was designated as a tropical depression, several hundred miles southwest of Cabo San Lucas. Embedded within steering currents of the low- to mid-level flow feeding into Hurricane Lane, the depression initially tracked gradually northeastward.[1]
Initially, wind shear sheared the convection away from the center of circulation.[2] Despite an exposed center and waning convection, the National Hurricane Center upgraded the depression to Tropical Storm Miriam at 1200 UTC on September 16. The storm reached peak winds of 45 mph (72 km/h) 12 hours later.[1] Shortly after being upgraded, thunderstorm activity began to increase, particularly on the southern side of the tropical storm. At the same time the cyclone took a slight northward jog.[3] Persistent wind shear and a cool, unfavorable environment limited further intensification.[1] Midday on September 17, a ship a couple hundred miles to the southwest of the center reported sustained winds of 39 kn (45 mph; 72 km/h). However, giving the distance from the actual storm, the report was deemed inaccurate to base Miriam's estimated intensity at, and thus weakened to a minimal tropical depression, as convection continued to die out and move away from the exposed circulation center.[4] A mid-level vorticity center was spawned off to the west of the low-level center later that day.[5]
The cooler waters among other factors weakened Miriam to a tropical depression at 0600 UTC on September 18.[1] Just hours later the storm was deemed a remnant low, and the National Hurricane Center issued their last advisory what was then just a low-level swirl of clouds, stating little possibility or reorganization.[6] The system moved more towards the north and northwest for a time, before turning towards the northeast and dissipating just offshore of Baja California.[1]
Effects
Because the storm remained far from shore as a tropical cyclone, no deaths are damage were associated with Miriam.[1] Additionally, because of the lack of damage, the name "Miriam" was not retired and is scheduled to be used for the 2013 Pacific hurricane season.[7]
See also
References
- ^ a b c d e f James L. Franklin (2006). "Tropical Storm Miriam Tropical Cyclone Report" (PDF). National Hurricane Center. Retrieved 2008-09-16.
- ^ Rhome/Knabb (2006). "Tropical Depression 14-E Discussion Number 1". National Hurricane Center. Retrieved 2008-09-16.
- ^ Fiorino/Stewart (2006). "Tropical Storm Miriam Discussion Number 4". National Hurricane Center. Retrieved 2008-09-16.
- ^ Mainelli/Cangialosi (2006). "Tropical Storm Miriam Discussion Number 7". National Hurricane Center. Retrieved 2008-09-16.
- ^ Fiorino/Pasch (2006). "Tropical Storm Miriam Discussion Number 8". National Hurricane Center. Retrieved 2008-09-16.
- ^ Avila/Congialosi (2006). "Tropical Depression Miriam Discussion Number 10". National Hurricane Center. Retrieved 2008-09-16.
- ^ "Worldwide Tropical Cyclone Names". National Hurricane Center. 2007. Retrieved 2008-09-13.