This is storm XANGSANE that was active in 2000 in the W. Pacific region with maximum winds of 167 km/h.

What was the maximum intensity of the storm?

Max Wind: 167 km/h. Min Pressure: hPa.

storm XANGSANE (2000) - Track and intensity details

Name: storm XANGSANE
Start: 2000-10-24
End: 2000-11-02
Location: W. Pacific

XANGSANE (2000)

Storm Code: 2000299N08139 | Region: W. Pacific
Active from 25/10/2000 to 02/11/2000 (9 days)

167 km/h

As measured · 1-min avg

Peak wind · 1-min (JTWC)

Converted ≈ 146 km/h · 10-min avg

Level 13

143 km/h

As measured · 10-min avg

Peak wind · 10-min (CMA)

Converted ≈ 128 km/h · 10-min avg

Level 12

960 hPa

Min Pressure

5,283 km

Distance

Forecast Agencies

Beaufort scale: all winds converted to the 10-min avg standard (WMO). Each agency's original value is shown alongside.

Agency	Max Intensity	Trajectory	Energy	highest_classification
WMO (International)	139	960	37	5,211	30.15	35.25	Level 13 - Violent Storm
JMA (Japan)	139	960	69	5,283	30.15	35.25	Level 13 - Violent Storm
JTWC	146 Orig.: 167	~	61	4,413	45.72	64.16	Level 13 - Violent Storm
CMA (China)	128 Orig.: 143	965	55	3,985	28.71	34.75	Level 12 - Violent Storm
HKO (Hong Kong)	130	965	53	3,396	31.11	35.32	Level 12 - Violent Storm

Agency

Max Intensity

Trajectory

Energy

highest_classification

Max Wind (km/h)

Min Pressure (hPa)

Number of points

Distance (km)

ACE (10⁴ (km/h)²)

PDI (10⁶ (km/h)³)

WMO (International)

139

960

5,211

30.15

35.25

Level 13 - Violent Storm

JMA (Japan)

139

960

5,283

30.15

35.25

Level 13 - Violent Storm

JTWC

146 Orig.: 167

4,413

45.72

64.16

Level 13 - Violent Storm

CMA (China)

128 Orig.: 143

965

3,985

28.71

34.75

Level 12 - Violent Storm

HKO (Hong Kong)

130

965

3,396

31.11

35.32

Level 12 - Violent Storm

Advanced Meteorological Indices by Agency Automatically calculated from raw data

WMO (International)

Energy
ACE (10⁴ (km/h)²)	30.15	High
PDI (10⁶ (km/h)³)	35.25
Intensification / Weakening
Max Wind Gain/Step	+19 km/h
Max Wind Gain/24h	+46 km/h	Fast
Max Wind Loss/Step	-19 km/h
Pressure Variation
Max Pressure Drop/Step	-10 hPa
Max Pressure Drop/24h	-25 hPa	Strong
Max Pressure Rise/Step (weakening)	+10 hPa
Movement & Duration
Avg Movement Speed	25.5 km/h
Tracking Time	204h (8.5 days)
Time as TD+ (≥34kt)	150h (6.3d)
Time as Storm+ (≥64kt)	48h (2d)
Peak Intensity & Range
Peak Intensity	13:00 30/10/2000 16.7°N, 118.7°E
Latitude	8.3°N – 33.4°N (25.1°)
Longitude	118°E – 139.3°E (21.3°)

JMA (Japan)

Energy
ACE (10⁴ (km/h)²)	30.15	High
PDI (10⁶ (km/h)³)	35.25
Intensification / Weakening
Max Wind Gain/Step	+9 km/h
Max Wind Gain/24h	+46 km/h	Fast
Max Wind Loss/Step	-19 km/h
Pressure Variation
Max Pressure Drop/Step	-5 hPa
Max Pressure Drop/24h	-25 hPa	Strong
Max Pressure Rise/Step (weakening)	+10 hPa
Movement & Duration
Avg Movement Speed	25.9 km/h
Tracking Time	204h (8.5 days)
Time as TD+ (≥34kt)	150h (6.3d)
Time as Storm+ (≥64kt)	51h (2.1d)
Peak Intensity & Range
Peak Intensity	13:00 30/10/2000 16.7°N, 118.8°E
Latitude	8.3°N – 33.4°N (25.1°)
Longitude	118.1°E – 139.3°E (21.2°)

JTWC RI

Energy
ACE (10⁴ (km/h)²)	45.72	High
PDI (10⁶ (km/h)³)	64.16
Intensification / Weakening
Max Wind Gain/Step	+24 km/h
Max Wind Gain/24h	+65 km/h	RI
Max Wind Loss/Step	-15 km/h
Movement & Duration
Avg Movement Speed	24.5 km/h
Tracking Time	180h (7.5 days)
Time as TD+ (≥34kt)	159h (6.6d)
Time as Storm+ (≥64kt)	102h (4.3d)
Peak Intensity & Range
Peak Intensity	07:00 30/10/2000 16.4°N, 118.3°E
Latitude	8.6°N – 31.9°N (23.3°)
Longitude	118.1°E – 137.2°E (19.1°)

CMA (China)

Energy
ACE (10⁴ (km/h)²)	28.71	High
PDI (10⁶ (km/h)³)	34.75
Intensification / Weakening
Max Wind Gain/Step	+9 km/h
Max Wind Gain/24h	+44 km/h	Fast
Max Wind Loss/Step	-28 km/h
Pressure Variation
Max Pressure Drop/Step	-5 hPa
Max Pressure Drop/24h	-18 hPa
Max Pressure Rise/Step (weakening)	+10 hPa
Movement & Duration
Avg Movement Speed	24.6 km/h
Tracking Time	162h (6.8 days)
Time as TD+ (≥34kt)	153h (6.4d)
Time as Storm+ (≥64kt)	51h (2.1d)
Peak Intensity & Range
Peak Intensity	13:00 30/10/2000 16.7°N, 118.7°E
Latitude	9.8°N – 31°N (21.2°)
Longitude	117.8°E – 133.5°E (15.7°)

HKO (Hong Kong)

Energy
ACE (10⁴ (km/h)²)	31.11	High
PDI (10⁶ (km/h)³)	35.32
Intensification / Weakening
Max Wind Gain/Step	+6 km/h
Max Wind Gain/24h	+37 km/h	Fast
Max Wind Loss/Step	-9 km/h
Pressure Variation
Max Pressure Drop/Step	-3 hPa
Max Pressure Drop/24h	-19 hPa
Max Pressure Rise/Step (weakening)	+5 hPa
Movement & Duration
Avg Movement Speed	21.8 km/h
Tracking Time	156h (6.5 days)
Time as TD+ (≥34kt)	153h (6.4d)
Time as Storm+ (≥64kt)	51h (2.1d)
Peak Intensity & Range
Peak Intensity	13:00 30/10/2000 16.6°N, 118.6°E
Latitude	9.7°N – 28.4°N (18.7°)
Longitude	117.8°E – 133°E (15.2°)

Advanced Indices Legend

ACE: Accumulated Cyclone Energy - measures total storm activity

PDI: Power Dissipation Index - measures potential destructiveness

RI: Rapid Intensification - when wind increases >=30 kt/24h or pressure drops >=30 hPa/24h

Countries with Direct Landfall

🇵🇭 Philippines

WMO 111 km/h Level 11

13.61°, 123.57° 2000-10-27 18:09:08

JMA 111 km/h Level 11

13.60°, 123.57° 2000-10-27 18:07:12

JTWC 139 km/h ≈ 122 km/h · 10-min avg Level 12

13.70°, 123.60° 2000-10-27 17:59:28

CMA 107 km/h ≈ 96 km/h · 10-min avg Level 10

13.64°, 124.37° 2000-10-27 14:10:04

HKO 111 km/h Level 11

13.39°, 123.74° 2000-10-27 17:48:34

🇯🇵 Japan

WMO

31.85°, 130.21° 2000-11-01 20:35:44

JMA

31.88°, 130.21° 2000-11-01 20:36:47

Values are interpolated at landfall time and may differ from actual data.

Index	Meaning	Formula / Condition	Classification
ACE Accumulated Cyclone Energy	Accumulated Cyclone Energy. Measures the total energy generated by the storm during its lifetime. Only counts reports with wind ≥ 35 kt (TS level or higher).	`ACE = Σ(V_max²) / 10&sup4;` Unit: 10⁴ kt²	< 2: Low 2-6: Medium 6-15: High ≥ 15: Very High
PDI Power Dissipation Index	Power Dissipation Index. More sensitive than ACE to extremely strong storms due to using cubic power. Reflects potential destructive power.	`PDI = Σ(V_max&sup³;) / 10&sup6;` Unit: 10⁶ kt³	Higher value = greater cumulative destructive power
RI Rapid Intensification	Rapid Intensification - storm strengthens suddenly in a short time. Very dangerous as it is difficult to forecast and causes surprise for prevention efforts.	Wind increase ≥ 30 kt/24h or Pressure drop ≥ 30 hPa/24h	Has RI or Fast increase (≥20kt)
Max wind gain/step	Maximum wind increase between 2 consecutive reports (usually 6 hours apart). Shows the fastest local intensification rate.	`max(V_i+1 - V_i)` Unit: kt (km/h)	Positive value = storm strengthening
Max wind gain/24h	Maximum wind increase in a 24-hour window. Main criterion for determining Rapid Intensification (RI).	`max(V_t+24h - V_t)` RI if ≥ 30 kt/24h	≥ 30kt: RI ≥ 20kt: Fast
Max wind loss/step	Maximum wind weakening between 2 consecutive reports. Shows at which stage the storm weakened fastest.	`max(V_i - V_i+1)` Unit: kt (km/h)	Positive value = storm weakening
Max pressure drop/step	Maximum pressure drop between 2 consecutive reports. Pressure decrease = storm center strengthening. Reflects local deepening rate.	`max(P_i - P_i+1)` Unit: hPa	Higher value = faster strengthening
Max pressure drop/24h	Maximum pressure drop in a 24-hour window. Important index for evaluating explosive deepening / explosive intensification.	`max(P_t - P_t+24h)` Explosive if ≥ 30 hPa	≥ 30hPa: RI ≥ 20hPa: Strong
Max pressure rise/step	Maximum pressure rise between 2 consecutive reports. Pressure increase = storm weakening. Large value indicates rapid weakening (due to terrain interaction, landfall, etc.).	`max(P_i+1 - P_i)` Unit: hPa	Higher value = faster weakening
Average moving speed	Average moving speed of the storm center during the entire monitoring period by that agency.	`V_avg = S_total / T_total` Unit: kt (km/h)	Slow-moving storms (<15 km/h) usually cause prolonged heavy rain
Monitoring duration	Total time from first report to last report of that agency.	`T = t_end - t_start` Unit: hours (days)	Different agencies may monitor for different durations
TS+ Duration	Total hours with average wind ≥ 34 kt (Tropical Storm level or higher). Reflects how long the storm maintained significant intensity.	Average wind ≥ 34 kt	Longer storm = greater total damage
TY+ Duration	Total hours with average wind ≥ 64 kt (Typhoon level or higher). Storms maintaining this level longer have much greater destructive power.	Average wind ≥ 64 kt	Longer time at Typhoon level = more dangerous
Peak Intensity	Time and location (lat, lon) when the storm reached maximum wind according to each agency. Helps identify where the storm was strongest.	V_max = max(V_i)	Peak location helps assess danger for nearby areas
Latitude / Longitude	Spatial range of activity by latitude and longitude. Shows whether the storm affected area is wide or narrow.	min-max(lat), min-max(lon)	Large range = long trajectory, wide impact

Index

Meaning

Formula / Condition

Classification

ACE
Accumulated Cyclone Energy

Accumulated Cyclone Energy. Measures the total energy generated by the storm during its lifetime. Only counts reports with wind ≥ 35 kt (TS level or higher).

ACE = Σ(V_max²) / 10&sup4;
Unit: 10⁴ kt²

< 2: Low
2-6: Medium
6-15: High
≥ 15: Very High

PDI
Power Dissipation Index

Power Dissipation Index. More sensitive than ACE to extremely strong storms due to using cubic power. Reflects potential destructive power.

PDI = Σ(V_max&sup³;) / 10&sup6;
Unit: 10⁶ kt³

Higher value = greater cumulative destructive power

RI
Rapid Intensification

Rapid Intensification - storm strengthens suddenly in a short time. Very dangerous as it is difficult to forecast and causes surprise for prevention efforts.

Wind increase ≥ 30 kt/24h or Pressure drop ≥ 30 hPa/24h

Has RI or
Fast increase (≥20kt)

Max wind gain/step

Maximum wind increase between 2 consecutive reports (usually 6 hours apart). Shows the fastest local intensification rate.

max(V_i+1 - V_i)
Unit: kt (km/h)

Positive value = storm strengthening

Max wind gain/24h

Maximum wind increase in a 24-hour window. Main criterion for determining Rapid Intensification (RI).

max(V_t+24h - V_t)
RI if ≥ 30 kt/24h

≥ 30kt: RI
≥ 20kt: Fast

Max wind loss/step

Maximum wind weakening between 2 consecutive reports. Shows at which stage the storm weakened fastest.

max(V_i - V_i+1)
Unit: kt (km/h)

Positive value = storm weakening

Max pressure drop/step

Maximum pressure drop between 2 consecutive reports. Pressure decrease = storm center strengthening. Reflects local deepening rate.

max(P_i - P_i+1)
Unit: hPa

Higher value = faster strengthening

Max pressure drop/24h

Maximum pressure drop in a 24-hour window. Important index for evaluating explosive deepening / explosive intensification.

max(P_t - P_t+24h)
Explosive if ≥ 30 hPa

≥ 30hPa: RI
≥ 20hPa: Strong

Max pressure rise/step

Maximum pressure rise between 2 consecutive reports. Pressure increase = storm weakening. Large value indicates rapid weakening (due to terrain interaction, landfall, etc.).

max(P_i+1 - P_i)
Unit: hPa

Higher value = faster weakening

Average moving speed

Average moving speed of the storm center during the entire monitoring period by that agency.

V_avg = S_total / T_total
Unit: kt (km/h)

Slow-moving storms (<15 km/h) usually cause prolonged heavy rain

Monitoring duration

Total time from first report to last report of that agency.

T = t_end - t_start
Unit: hours (days)

Different agencies may monitor for different durations

TS+ Duration

Total hours with average wind ≥ 34 kt (Tropical Storm level or higher). Reflects how long the storm maintained significant intensity.

Average wind ≥ 34 kt

Longer storm = greater total damage

TY+ Duration

Total hours with average wind ≥ 64 kt (Typhoon level or higher). Storms maintaining this level longer have much greater destructive power.

Average wind ≥ 64 kt

Longer time at Typhoon level = more dangerous

Peak Intensity

Time and location (lat, lon) when the storm reached maximum wind according to each agency. Helps identify where the storm was strongest.

V_max = max(V_i)

Peak location helps assess danger for nearby areas

Latitude / Longitude

Spatial range of activity by latitude and longitude. Shows whether the storm affected area is wide or narrow.

min-max(lat), min-max(lon)

Large range = long trajectory, wide impact

XANGSANE (2000)

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Advanced Meteorological Indices by Agency Automatically calculated from raw data

Advanced Indices Legend

Countries with Direct Landfall

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Weather Agencies (5 sources)

Storm Lifecycle Timeline

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Agency Data Comparison

Indices Legend

Advanced Meteorological Indices by Agency Automatically calculated from raw data

Advanced Indices Legend

Countries with Direct Landfall

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