{
 "number": 983,
 "headline": "July 18, 2026 Saturday Tropical Update",
 "standfirst": "Invest 91L tagged in the Gulf with a 50% chance of further development into a tropical depression. Next name is Bertha.",
 "desk": "tropics",
 "dateline": {
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  "state": null,
  "lat": null,
  "lon": null,
  "site_key": null,
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  "accent": null
 },
 "edition": "2026-07-19",
 "published": "2026-07-19T01:16:33.047000Z",
 "updated": null,
 "access": "members",
 "body_html": "",
 "body_key": "substack/207607669-july-18-2026-saturday-tropical-update.html",
 "teaser_html": "<p>Invest 91L was tagged in the east central Gulf of Mexico with a 50% of development into a tropical depression in the next few days as it drifts north / northwest toward the coastline.  There is an apparent mid-level circulation associated with a trough, and has fired up showers and storms over the past 24-36 hours, but the activity has waned this evening.  Perhaps the nighttime diurnal convective max will see storms blow up again, and then NHC was task aircraft recon to visit the system.</p><p>50% chance of development \u2014 steadily increased today from 10%/20% yesterday</p>",
 "claims": [],
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 "provenance": {
  "built_at": "2026-09-10T14:46:13Z",
  "model": null,
  "cycle": null,
  "stores": [
   "https://weather.substack.com/p/july-18-2026-saturday-tropical-update"
  ],
  "mint_sha256": null,
  "pairing_rule": null,
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  "inputs": {
   "substack_post_id": "207607669.july-18-2026-saturday-tropical-update",
   "audience": "only_paid",
   "type": "newsletter",
   "imported_from": "substack export"
  }
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 "strength": 0.0,
 "tags": [
  "archive",
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 "supersedes": null,
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 "source": "substack",
 "canonical": "https://weather.substack.com/p/july-18-2026-saturday-tropical-update",
 "slug": "july-18-2026-saturday-tropical-update",
 "path": "/mp/983/",
 "url": "https://forecastpost.com/mp/983/",
 "desk_label": "Tropics",
 "digest": "410d87af52189c097dd4aa4f149ae016ee2bf8c443ad8d1a65f2cece12646763"
}