Sea Ledger, January 1998
1998-01-01 to 1998-01-31 · archive
- issued
- 56
- warning-days in force
- 1,531
- in force at month end
- 54
- sea × type cells
- 53
baseline: same month, previous 5 years — not available for this month (needs three fully collected reference months)
By type
By sea and type · 53 cells, most issued first
Cite: seahazards.com Sea Ledger, 1998-01, retrieved 2026-09-03
Not for navigation. Warning-days = days each warning was in force within the month, summed. Only warnings we display are counted; the ratio compares warnings issued with the mean of the reference months.