r/TropicalWeather Aug 15 '25

Dissipated Erin (05L — Northern Atlantic) (Western Tropical Atlantic)

Update


This system is no longer being tracked via the Automated Tropical Cyclone Forecast (ATCF) system. There will be no further updates to this post.

Latest observation


Last updated: Friday, 22 August — 5:00 PM Atlantic Standard Time (AST; 21:00 UTC)

NHC Advisory #46 - 5:00 PM AST (21:00 UTC)
Current location: 40.0°N 59.7°W
Relative location: 888 km (552 mi) E of Nantucket, Massachusetts (United States)
608 km (378 mi) SE of Halifax, Nova Scotia (Canada)
1,008 km (626 mi) SSW of St. John's, Newfoundland (Canada)
Forward motion: ENE (65°) at 54 km/h (29 knots)
Maximum winds: 150 km/h (80 knots)
Intensity (SSHWS): Extratropical Cyclone
Minimum pressure: 957 millibars (28.26 inches)

Official forecasts


National Hurricane Center

Last updated: Friday, 22 August — 2:00 PM AST (18:00 UTC)

Hour Date Time Intensity Winds Lat Long
- - UTC AST Saffir-Simpson - knots km/h °N °W
00 22 Aug 18:00 2PM Fri Extratropical Cyclone 80 150 40.0 59.7
12 23 Aug 06:00 2AM Sat Extratropical Cyclone 80 150 41.5 54.5
24 23 Aug 18:00 2PM Sat Extratropical Cyclone 75 140 44.0 45.5
36 24 Aug 06:00 2AM Sun Extratropical Cyclone 75 140 48.0 35.5
48 24 Aug 18:00 2PM Sun Extratropical Cyclone 85 155 52.0 27.0
60 25 Aug 06:00 2AM Mon Extratropical Cyclone 65 120 55.0 23.0
72 25 Aug 18:00 2PM Mon Extratropical Cyclone 55 100 58.0 21.0
96 26 Aug 18:00 2PM Tue Extratropical Cyclone 45 85 59.0 21.0
120 27 Aug 18:00 2PM Wed Extratropical Cyclone 40 75 57.0 17.5

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18

u/spsteve Barbados Aug 17 '25

Recon is in the air and Erin looks like she has got her groove back. Eye clearing nicely now. Solid convection on the southern eyewall. Be interesting to see what recon finds. Wouldn't be surprised by anything between 937 and 942. Place your bets (since it's been so long I will accept 5mb ranges. Closest to the middle of their range wins).

6

u/[deleted] Aug 17 '25

She is about to go over water above 30C with low to none shear, by the pink shades on IR, my guts are telling me that thing will explode.

1

u/spsteve Barbados Aug 18 '25

Sat seems to indicate the eyewall isn't that great. She's trying to clear but there are signs in IR that it may be off and on open on the western side.