This is storm LONGWANG that was active in 2005 in the W. Pacific region with maximum winds of 232 km/h.

What was the maximum intensity of the storm?

Max Wind: 232 km/h. Min Pressure: hPa.

storm LONGWANG (2005) - Track and intensity details

Name: storm LONGWANG
Start: 2005-09-25
End: 2005-10-03
Location: W. Pacific

LONGWANG (2005)

Storm Code: 2005268N19146 | Region: W. Pacific
Active from 25/09/2005 to 04/10/2005 (9 days)

232 km/h

1-min Wind (JTWC)

Level 17

213 km/h

10-min Wind (HKO)

Level 17

915 hPa

Min Pressure

3,466 km

Distance

Forecast Agencies

Agency	Max Intensity	Trajectory	Energy	highest_classification
JTWC	232	916	71	3,466	207.95	435.31	Level 17 - Super Typhoon
WMO (International)	176	930	39	3,241	73.43	115.16	Level 15 - Violent Storm
JMA (Japan)	176	930	65	3,277	114.94	177.73	Level 15 - Violent Storm
CMA (China)	196	935	65	3,261	134.83	225.56	Level 16 - Super Typhoon
HKO (Hong Kong)	213	915	57	2,909	147.90	264.25	Level 17 - Super Typhoon

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)

JTWC

232

916

3,466

207.95

435.31

Level 17 - Super Typhoon

WMO (International)

176

930

3,241

73.43

115.16

Level 15 - Violent Storm

JMA (Japan)

176

930

3,277

114.94

177.73

Level 15 - Violent Storm

CMA (China)

196

935

3,261

134.83

225.56

Level 16 - Super Typhoon

HKO (Hong Kong)

213

915

2,909

147.90

264.25

Level 17 - Super Typhoon

Advanced Meteorological Indices by Agency Automatically calculated from raw data

JTWC

Energy
ACE (10⁴ (km/h)²)	207.95	Very High
PDI (10⁶ (km/h)³)	435.31
Intensification / Weakening
Max Wind Gain/Step	+15 km/h
Max Wind Gain/24h	+46 km/h	Fast
Max Wind Loss/Step	-24 km/h
Pressure Variation
Max Pressure Drop/Step	-7 hPa
Max Pressure Drop/24h	-22 hPa	Strong
Max Pressure Rise/Step (weakening)	+11 hPa
Movement & Duration
Avg Movement Speed	16.5 km/h
Tracking Time	210h (8.8 days)
Time as TD+ (≥34kt)	342h (14.3d)
Time as Storm+ (≥64kt)	282h (11.8d)
Peak Intensity & Range
Peak Intensity	19:00 28/09/2005 22.5°N, 136.1°E
Latitude	18.7°N – 27.1°N (8.4°)
Longitude	115.3°E – 146.1°E (30.8°)

WMO (International) RI

Energy
ACE (10⁴ (km/h)²)	73.43	Very High
PDI (10⁶ (km/h)³)	115.16
Intensification / Weakening
Max Wind Gain/Step	+19 km/h
Max Wind Gain/24h	+56 km/h	RI
Max Wind Loss/Step	-28 km/h
Pressure Variation
Max Pressure Drop/Step	-12 hPa
Max Pressure Drop/24h	-37 hPa	RI
Max Pressure Rise/Step (weakening)	+20 hPa
Movement & Duration
Avg Movement Speed	16.9 km/h
Tracking Time	192h (8 days)
Time as TD+ (≥34kt)	204h (8.5d)
Time as Storm+ (≥64kt)	162h (6.8d)
Peak Intensity & Range
Peak Intensity	07:00 01/10/2005 22.5°N, 127°E
Latitude	19°N – 26°N (7°)
Longitude	115.7°E – 145.4°E (29.7°)

JMA (Japan)

Energy
ACE (10⁴ (km/h)²)	114.94	Very High
PDI (10⁶ (km/h)³)	177.73
Intensification / Weakening
Max Wind Gain/Step	+9 km/h
Max Wind Gain/24h	+37 km/h	Fast
Max Wind Loss/Step	-28 km/h
Pressure Variation
Max Pressure Drop/Step	-6 hPa
Max Pressure Drop/24h	-22 hPa	Strong
Max Pressure Rise/Step (weakening)	+20 hPa
Movement & Duration
Avg Movement Speed	17.1 km/h
Tracking Time	192h (8 days)
Time as TD+ (≥34kt)	330h (13.8d)
Time as Storm+ (≥64kt)	252h (10.5d)
Peak Intensity & Range
Peak Intensity	07:00 01/10/2005 22.5°N, 126.9°E
Latitude	18.9°N – 26°N (7.1°)
Longitude	115.5°E – 145.3°E (29.8°)

CMA (China)

Energy
ACE (10⁴ (km/h)²)	134.83	Very High
PDI (10⁶ (km/h)³)	225.56
Intensification / Weakening
Max Wind Gain/Step	+13 km/h
Max Wind Gain/24h	+44 km/h	Fast
Max Wind Loss/Step	-22 km/h
Pressure Variation
Max Pressure Drop/Step	-8 hPa
Max Pressure Drop/24h	-20 hPa	Strong
Max Pressure Rise/Step (weakening)	+10 hPa
Movement & Duration
Avg Movement Speed	17 km/h
Tracking Time	192h (8 days)
Time as TD+ (≥34kt)	336h (14d)
Time as Storm+ (≥64kt)	270h (11.3d)
Peak Intensity & Range
Peak Intensity	07:00 01/10/2005 22.5°N, 127°E
Latitude	18.9°N – 26°N (7.1°)
Longitude	115.6°E – 145.3°E (29.7°)

HKO (Hong Kong)

Energy
ACE (10⁴ (km/h)²)	147.90	Very High
PDI (10⁶ (km/h)³)	264.25
Intensification / Weakening
Max Wind Gain/Step	+9 km/h
Max Wind Gain/24h	+37 km/h	Fast
Max Wind Loss/Step	-19 km/h
Pressure Variation
Max Pressure Drop/Step	-5 hPa
Max Pressure Drop/24h	-20 hPa	Strong
Max Pressure Rise/Step (weakening)	+9 hPa
Movement & Duration
Avg Movement Speed	17.3 km/h
Tracking Time	168h (7 days)
Time as TD+ (≥34kt)	324h (13.5d)
Time as Storm+ (≥64kt)	264h (11d)
Peak Intensity & Range
Peak Intensity	07:00 01/10/2005 22.5°N, 126.9°E
Latitude	19.6°N – 25.3°N (5.7°)
Longitude	116.7°E – 143.5°E (26.8°)

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

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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

LONGWANG (2005)

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Advanced Meteorological Indices by Agency Automatically calculated from raw data

Advanced Indices Legend

Countries with Direct Landfall

LONGWANG

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LONGWANG (2005)

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Weather Agencies (5 sources)

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Track List (0 points)

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Quick Stats

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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