Tropical Storm Thelma (1971)
Tropical Storm Thelma peaked at 45 kt in the Western Pacific between March 15, 1971 and March 24, 1971, with a lowest pressure of 994 mb.
Track and intensity
The whole track of Tropical Storm Thelma, colored by strength, with the other storms of the 1971 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.
The storm
- Basin
- Western Pacific
- Dates
- March 15, 1971 to March 24, 1971
- Peak strength
- Tropical Storm, 45 kt (52 mph)
- Lowest pressure
- 994 mb (29.35 inHg)
- Landfall
- No; closest approach 317 km (197 mi)
- Accumulated cyclone energy
- 0.2
- Identifier
- WP021971
Deaths and damage
No source this site reads publishes a machine-readable casualty or damage figure for a storm of this era. The National Hurricane Center’s season tables begin in 1995 and carry deaths and damage only from 2005 in the Atlantic and 2020 in both basins; the US Storm Events record begins in 1996.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Mar 15, 00:00 | 5.7N 133.8E | Disturbance | ||
| Mar 15, 06:00 | 6.4N 133.7E | Tropical storm | ||
| Mar 15, 12:00 | 7.1N 133.5E | Tropical storm | ||
| Mar 15, 18:00 | 7.9N 133.2E | Tropical storm | ||
| Mar 16, 00:00 | 9.1N 133.0E | 1004 mb | Tropical storm | |
| Mar 16, 06:00 | 10.0N 132.5E | 1002 mb | Tropical storm | |
| Mar 16, 12:00 | 10.5N 131.8E | 1002 mb | Tropical storm | |
| Mar 16, 18:00 | 10.7N 130.9E | 1002 mb | Tropical storm | |
| Mar 17, 00:00 | 10.9N 129.6E | 1004 mb | Tropical storm | |
| Mar 17, 06:00 | 10.8N 129.4E | 1002 mb | Tropical storm | |
| Mar 17, 12:00 | 10.5N 129.4E | 1002 mb | Tropical storm | |
| Mar 17, 18:00 | 10.3N 129.3E | 1000 mb | Tropical storm | |
| Mar 18, 00:00 | 10.0N 129.3E | 999 mb | Tropical storm | |
| Mar 18, 06:00 | 10.2N 129.5E | 45 kt | 996 mb | Tropical storm |
| Mar 18, 12:00 | 9.9N 128.8E | 30 kt | 1000 mb | Tropical storm |
| Mar 18, 18:00 | 9.2N 129.7E | 25 kt | 998 mb | Tropical storm |
| Mar 19, 00:00 | 9.2N 129.8E | 25 kt | 998 mb | Tropical storm |
| Mar 19, 06:00 | 11.6N 130.6E | 25 kt | 996 mb | Tropical storm |
| Mar 19, 12:00 | 13.1N 131.6E | 25 kt | 996 mb | Tropical storm |
| Mar 19, 18:00 | 14.5N 132.8E | 996 mb | Tropical storm | |
| Mar 20, 00:00 | 15.7N 133.5E | 996 mb | Tropical storm | |
| Mar 20, 06:00 | 16.6N 134.1E | 994 mb | Tropical storm | |
| Mar 20, 12:00 | 17.7N 134.7E | 994 mb | Tropical storm | |
| Mar 20, 18:00 | 18.5N 135.5E | 994 mb | Tropical storm | |
| Mar 21, 00:00 | 19.2N 136.3E | 994 mb | Tropical storm | |
| Mar 21, 06:00 | 20.0N 137.1E | 996 mb | Mixed | |
| Mar 21, 12:00 | 20.9N 137.8E | 996 mb | Mixed | |
| Mar 21, 18:00 | 21.9N 138.6E | 998 mb | Mixed | |
| Mar 22, 00:00 | 22.8N 139.5E | 998 mb | Extratropical | |
| Mar 22, 06:00 | 23.8N 140.1E | 998 mb | Extratropical | |
| Mar 22, 12:00 | 24.5N 141.1E | 998 mb | Extratropical | |
| Mar 22, 18:00 | 25.2N 143.0E | 998 mb | Extratropical | |
| Mar 23, 00:00 | 25.8N 145.1E | 1000 mb | Extratropical | |
| Mar 23, 06:00 | 26.2N 147.0E | 1000 mb | Extratropical | |
| Mar 23, 12:00 | 26.5N 148.8E | 1002 mb | Extratropical | |
| Mar 23, 18:00 | 27.2N 150.7E | 1002 mb | Extratropical | |
| Mar 24, 00:00 | 28.2N 153.1E | 1002 mb | Extratropical | |
| Mar 24, 06:00 | 30.8N 156.6E | 1002 mb | Extratropical | |
| Mar 24, 12:00 | 33.0N 160.2E | 1002 mb | Extratropical |
Other Western Pacific storms of 1971
- Tropical Depression SarahWestern Pacific · 1971
- Tropical Storm SarahWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Tropical Depression VeraWestern Pacific · 1971
- Typhoon VeraWestern Pacific · 1971
- Typhoon WandaWestern Pacific · 1971
- Super Typhoon AmyWestern Pacific · 1971
- Tropical Storm BabeWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Tropical Storm CarlaWestern Pacific · 1971
- Typhoon DinahWestern Pacific · 1971
- Tropical Storm EmmaWestern Pacific · 1971
- Typhoon FredaWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Typhoon GildaWestern Pacific · 1971
- Typhoon HarrietWestern Pacific · 1971
- Tropical Storm IvyWestern Pacific · 1971
- Tropical Storm KimWestern Pacific · 1971
- Typhoon JeanWestern Pacific · 1971
- Super Typhoon LucyWestern Pacific · 1971
- Super Typhoon NadineWestern Pacific · 1971
- Tropical Depression LucyWestern Pacific · 1971
- Typhoon OliveWestern Pacific · 1971
- Tropical Storm PollyWestern Pacific · 1971
- Typhoon RoseWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Typhoon ShirleyWestern Pacific · 1971
- Typhoon TrixWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Typhoon VirginiaWestern Pacific · 1971
- Super Typhoon WendyWestern Pacific · 1971
- Typhoon AgnesWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Super Typhoon BessWestern Pacific · 1971
- Tropical Storm CarmenWestern Pacific · 1971
- Typhoon DellaWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Typhoon ElaineWestern Pacific · 1971
- Typhoon Faye:GloriaWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Typhoon Faye:GloriaWestern Pacific · 1971
- Tropical Depression Faye:GloriaWestern Pacific · 1971
- Typhoon HesterWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Super Typhoon IrmaWestern Pacific · 1971
- Tropical Storm JudyWestern Pacific · 1971
- Tropical Depression JudyWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
- Unnamed tropical depressionWestern Pacific · 1971
What this means
A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.
Sources
Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.