Storms

Due to post-tropical cyclone idalia: 1. the following port(s) are closed: a. cedar key 29-09N 080-20W

Gulf of Mexico · NAVAREA IV 1017/23

What this record establishes

Archived notice · 2023-09-05 04:15Z

This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.

Source and dates
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · SFH 0/23 020400Z SEP 23.. Issued 2023-09-02 04:16Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
Gulf of Mexico. The parsed report position is 28.648, -82.289. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Related notices and cancellation links

These reports were linked by category and sea, with positions within 30 nautical miles and issue dates within 30 days of another report's recorded in-force span. Links can extend through other members, so the full group can cover a larger area or period. Proximity does not confirm that they describe one incident.

  1. NAVAREA IV 974/232023-08-28 · Archived notice
  2. NAVAREA IV 975/232023-08-28 · Archived notice
  3. NAVAREA IV 985/232023-08-29 · Archived notice
  4. NAVAREA IV 986/232023-08-29 · Archived notice
  5. NAVAREA IV 991/232023-08-29 · Archived notice
  6. NAVAREA IV 993/232023-08-30 · Archived notice
Compare all 12 notices, changes and original texts →

Current notices and reporting history in the Gulf of Mexico →

issued
2023-09-02 04:16Z
status
Archived notice
self-cancels
2023-09-05 04:15Z
authority
SFH 0/23 020400Z SEP 23.
NAVAREA
NAVAREA IV
issued by
SFH
sea
Gulf of Mexico
position
28.648, -82.289
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

DUE TO POST-TROPICAL CYCLONE IDALIA:
1. THE FOLLOWING PORT(S) ARE CLOSED:
   A. CEDAR KEY 29-09N 080-20W.
2. THE FOLLOWING PORT(S) ARE OPEN WITH RESTRICTIONS:
   A. FORT PIERCE 27-26N 082-34W.
3. THE FOLLOWING PORT(S) HAVE RE-OPENED:
   A. PORT MANATEE 27-38N 082-34W.
   B. ST PETERSBURG 27-46N 082-37W.
   C. TAMPA 27-55N 082-27W.
   D. KEY WEST 24-33N 081-49W.
   E. PANAMA CITY 30-09N 085-40W.
   F. BRUNSWICK 31-09N 081-30W.
   G. SAVANNAH 32-05N 081-05W.
   NONE TO REPORT.
4. CURRENT PORT INFORMATION CAN BE FOUND AT
   HOMEPORT.USCG.MIL USING THE PORT DIRECTORY TAB.
5. CANCEL THIS MSG 050415Z SEP 23.

Reading this warning

Position (degrees and minutes)
How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.
Date-time group (DTG)
A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.

All warning terms →

Collected reports in this area · tropical cyclone warnings

66 within 180 nm since 2016 · 0 in the last 12 months · 0 listed in force now

16
20
24

Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.

Month of issue in the collected archive

J
F
M
A
M
J
J
A
S
O
N
D

All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.

Nearby notices listed in force · within 120 nm

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

6 tropical cyclone warnings listed in force · see all

Record snapshot 2026-09-29 11:50Z; source collection times vary.

Storms

Hurricanes, typhoons and tropical storms: forecast cones from the U.S. National Hurricane Center and the Joint Typhoon Warning Center, and the port closures NAVAREA coordinators broadcast for them. All current tropical cyclone warnings →

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.