Thursday, September 15, 2005

Tropical Storm Kenneth

Tropical Storm Kenneth Eastern Pacific 2005


Information on Tropical Storm Kenneth or Hurricane Kenneth 2005.

09AM MDT 15/09/05 Tropical Storm Kenneth has strengthened dramatically in the last 8 hrs in the Eastern Pacific. Tropical Storm Kenneth evolved out of Tropical Depression 11E. The storm is located about 958 miles SW of Cabo San Lucas.

The storm is located near 13.1N 120.3W and is moving 280³ at 07kts. Central barometric pressure is estimated at 1000 MB. Winds are 45 with gusts to 55kts. The new forecast has been significantly upgraded, with Kenneth becoming a hurricane early on 16/09.

Tropical Depression 11E formed SW of Baja California on Wednesday, September 14. Directed by the same westerly flow that drove Jova, Kenneth is moving west, out into the Pacific. The storm is not expected to pose any threat to land.

Tropical Storm Kenneth formed well west of the Baja California Threat Zone and only limited updates will be posted on this storm until historical data is available.

More information on TS Kenneth

 

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Insider's Notebook: What defines a hurricane?


The terms "hurricane" and "typhoon" are regionally specific names for a strong "tropical cyclone". A tropical cyclone is the generic term for a non-frontal synoptic scale low-pressure system over tropical or sub-tropical waters with organized convection (i.e. thunderstorm activity) and definite cyclonic surface wind circulation (Holland 1993).

Tropical cyclones with maximum sustained surface winds of less than 17 m/s (34 kt, 39 mph) are called "tropical depressions". (This is not to be confused with the condition mid-latitude people get during a long, cold and grey winter wishing they could be closer to the equator ;-)) Once the tropical cyclone reaches winds of at least 17 m/s they are typically called a "tropical storm" and assigned a name. If winds reach 33 m/s (64 kt, 74 mph)), then they are called: a "hurricane" (the North Atlantic Ocean, the Northeast Pacific Ocean east of the dateline, or the South Pacific Ocean east of 160E); a "typhoon" (the Northwest Pacific Ocean west of the dateline); a "severe tropical cyclone" (the Southwest Pacific Ocean west of 160E or Southeast Indian Ocean east of 90E); a "severe cyclonic storm" (the North Indian Ocean); and a "tropical cyclone" (the Southwest Indian Ocean) (Neumann 1993).

Type

Category

Pressure (mb)

Winds
(knots)

Winds
(mph)

Surge (ft)

Depression

TD

-----

< 34

< 39

 

Tropical Storm

TS

-----

34-63

39-73

 

Hurricane

1

> 980

64-82

74-95

4-5

Hurricane

2

965-980

83-95

96-110

6-8

Hurricane

3

945-965

96-113

111-130

9-12

Hurricane

4

920-945

114-135

131-155

13-18

Hurricane

5

< 920

>135

>155

>18

 


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