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Tropical Cyclone Report

Hurricane Linda

13 - 17 September 2003

Jack Beven
National Hurricane Center
19 December 2003

Linda was a category 1 hurricane (on the Saffir-Simpson Hurricane Scale) that did not affect land.

a. Synoptic History

Linda formed from a tropical wave that emerged from the coast of Africa on 28 August. The system moved westward with little development, crossing Central America and entering into the Pacific on 6 September. Convection began to increase on 9 September and became better organized on 12 September as a broad surface low formed. Development continued, and it is estimated that the disturbance became a tropical depression near 1800 UTC 13 September, about 340 n mi southwest of Manzanillo, Mexico. The "best track" chart of the tropical cyclone's path is given in Figure 1, with the wind and pressure histories shown in Figure 2 and Figure 3, respectively. The best track positions and intensities are listed in Table 1.

The cyclone moved northwestward and intensified. It became Tropical Storm Linda on 14 September and a hurricane with 65 kt winds the next day. Linda was a hurricane for only 12 h; then it weakened to a tropical storm early on 16 September. The cyclone turned westward later that day, followed by a southwestward turn on 17 September while it weakened to a depression. Linda became a remnant low on 18 September, which drifted southwestward and south-southwestward until dissipating on 23 September.

b. Meteorological Statistics

Observations in Linda (Figure 2 and Figure 3) include satellite-based Dvorak technique intensity estimates from the Tropical Analysis and Forecast Branch (TAFB), the Satellite Analysis Branch (SAB) and the U. S. Air Force Weather Agency (AFWA). Microwave satellite imagery from the NOAA polar-orbiting satellites, the NASA Tropical Rainfall Measuring Mission (TRMM), the NASA QuikSCAT, and the Defense Meteorological Satellite Program (DMSP) satellites were also useful in tracking Linda.

There are no known observations of tropical-storm force or greater winds associated with Linda.

c. Casualty and Damage Statistics

There were no reports of damages or casualties associated with Linda.

d. Forecast and Warning Critique

Average official track errors (with the number of cases in parentheses) for Linda were 27 (13), 47 (11), 71 (9), 96 (7), and 152 (3) n mi for the 12, 24, 36, 48, and 72 h forecasts, respectively1. These errors are significantly lower than the average official track errors for the 10-yr period 1993-2002 (39, 72, 103, 131, and 186 n mi, respectively). These errors were also lower than the errors for the Climatology-Persistence method (38, 78, 129, 164, and 235 n mi, respectively) indicating that the forecasts had skill relative to that measure. Since Linda was a tropical cyclone for only 72 h, no 96 or 120 h verification is available.

Average official intensity errors were 7, 16, 23, 23, and 15 kt for the 12, 24, 36, 48, and 72 h forecasts, respectively. For comparison, the average official intensity errors over the 10-yr period 1993-2002 are 6, 11, 15, 17, and 20 kt, respectively. The average intensity errors for Climatology-Persistence were 6, 14, 18, 18, and 22 kt, respectively. The larger-than-normal official errors at 24 and 36 h were due to overforecasting how strong Linda would become before it reached cold water.

No watches or warnings were required for Linda.

1All forecast verifications in this report include the depression stage of the cyclone. National Hurricane Center verifications presented in these reports prior to 2003 did not include the depression stage.



Table 1: Best track for Hurricane Linda, 13-17 September 2003.
Date/Time
(UTC)
PositionPressure
(mb)
Wind Speed
(kt)
Stage
Lat.
(°N)
Lon.
(°W)
 13 / 1800 14.7 108.2 1007 25 tropical depression
 14 / 0000 15.2 108.6 1005 30 "
 14 / 0600 15.8 109.1 1005 30 "
 14 / 1200 16.5 109.6 1004 35 tropical storm
 14 / 1800 17.1 110.3 1001 40 "
 15 / 0000 17.7 111.0 1000 45 "
 15 / 0600 18.3 111.8 994 55 "
 15 / 1200 19.0 112.5 987 65 hurricane
 15 / 1800 19.7 113.2 987 65 "
 16 / 0000 20.1 114.0 990 60 tropical storm
 16 / 0600 20.5 114.8 994 55 "
 16 / 1200 20.7 115.3 1000 45 "
 16 / 1800 20.7 115.9 1002 40 "
 17 / 0000 20.5 116.4 1004 35 "
 17 / 0600 20.4 116.6 1005 30 tropical depression
 17 / 1200 20.3 116.8 1007 30 "
 17 / 1800 20.2 117.0 1007 25 "
 18 / 0000 20.0 117.2 1007 25 remnant low
 18 / 0600 19.6 117.4 1007 25 "
 18 / 1200 19.2 117.6 1007 25 "
 18 / 1800 18.9 117.8 1007 25 "
 19 / 0000 18.7 118.1 1007 25 "
 19 / 0600 18.6 118.5 1007 25 "
 19 / 1200 18.5 118.9 1007 25 "
 19 / 1800 18.4 119.3 1007 25 "
 20 / 0000 18.2 119.7 1007 25 "
 20 / 0600 18.0 120.0 1007 25 "
 20 / 1200 17.8 120.1 1006 25 "
 20 / 1800 17.6 120.2 1006 25 "
 21 / 0000 17.3 120.2 1007 25 "
 21 / 0600 17.0 120.3 1008 20 "
 21 / 1200 16.8 120.4 1009 20 "
 21 / 1800 16.6 120.5 1009 20 "
 22 / 0000 16.4 120.7 1009 20 "
 22 / 0600 16.2 120.8 1009 20 "
 22 / 1200 16.0 120.8 1009 20 "
 22 / 1800 15.7 120.8 1009 20 "
 23 / 0000 15.5 120.6 1009 20 "
 23 / 0600 15.5 120.6 1009 20 "
 23 / 1200     dissipated
 15 / 1200 19.0 112.5 987 65 minimum pressure
 15 / 1800 19.7 113.2 987 65 "

Figure 1: Best track positions for Hurricane Linda, 13-17 September 2003.

Figure 2: Selected wind estimates and best track maximum sustained surface wind speed curve for Hurricane Linda, 13-17 September 2003.

Figure 3: Selected pressure estimates and best track minimum central pressure curve for Hurricane Linda, 13-17 September 2003.


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