NOTAM vs SNOWTAM
NOTAMs and SNOWTAMs are both aeronautical notices, but they serve different purposes and use different formats. NOTAM History focuses on archived NOTAM retrieval by ICAO and date; understanding the distinction helps you interpret briefing and archive output correctly.
NOTAM
A NOTAM covers a broad range of aeronautical information: airspace, navaids, runways, procedures, hazards, and services. Format and distribution follow ICAO standards, with series letters, numbered identifiers, validity periods, and plain-text bodies distributed internationally.
Operational briefing products aggregate active NOTAMs for pre-flight use. When they expire, they leave those feeds — which is why historical NOTAM archive search exists for retrospective professional work.
SNOWTAM
A SNOWTAM is a special series notice describing runway surface conditions due to snow, ice, slush, or standing water. It uses a dedicated format focused on contaminant type, depth, coverage, and runway friction information. SNOWTAMs are highly time-sensitive for winter operations and short-lived relative to many standard NOTAMs.
SNOWTAMs are issued as part of the broader aeronautical information system but are not interchangeable with general NOTAM text. Winter ops specialists and dispatchers treat them as distinct briefing elements.
Key differences at a glance
| NOTAM | SNOWTAM | |
|---|---|---|
| Primary content | Facilities, services, hazards, airspace, procedures | Runway surface contamination and related conditions |
| Typical duration | Hours to months (varies widely) | Often very short; updated frequently in winter |
| Format | ICAO NOTAM plain text | Dedicated SNOWTAM structure |
| NOTAM History focus | Archived NOTAM lookup by ICAO + date | NOTAM archive scope; confirm SNOWTAM coverage for your case |
Historical retrieval for professionals
Investigators and lawyers may need to establish what runway surface information was published on an occurrence date in winter conditions. Archive queries by ICAO aerodrome and date reconstruct the active NOTAM set; confirm with data sources and accuracy whether specific notice types are included for your location and date.
NOTAM History is intended for documentation and analysis — not operational pre-flight briefing. For live winter ops, use approved briefing including current SNOWTAM products. For NOTAM field structure, see ICAO NOTAM format.
Winter operations and retrospective review
Winter occurrence investigations may need both general NOTAMs and surface condition notices. Confirm archive coverage for your aerodrome and date via data sources and accuracy when surface condition content is central.
Dispatchers distinguish live SNOWTAM updates from static NOTAM briefing during ops; post-event review should likewise identify which notice type addressed the runway state question.
NOTAM History archive search by ICAO aerodrome and date supports professional retrospective documentation — not for live winter briefing.
Professional use summary
NOTAM History delivers archived NOTAMs by ICAO aerodrome or FIR and historical validity date, with approximately two years of archive depth via professional aviation data APIs. Pricing: €9.99 one-off, €29.99/year (ten searches), €29.99 top-up. Email output uses ICAO plain-text format for investigators, lawyers, insurers, safety officers, and operators. Not for pre-flight briefing — use FAA NOTAM Search or approved operator systems for current US and international operations before flight.
NOTAM History queries professional archive APIs by 4-letter ICAO aerodrome or FIR code and historical validity date, returning ICAO plain-text NOTAM output by email within seconds. Archive depth is approximately two years where supported. Pricing is €9.99 per one-off search, €29.99 per year including ten searches, or €29.99 top-up packs. The service is designed for investigators, aviation lawyers, insurers, safety officers, and operators who need expired NOTAMs no longer shown on FAA NOTAM Search or briefing apps — and is not for pre-flight operational briefing.
Archive retrieval on notamhistory.com remains the practical path for notam vs snowtam workflows when expired notices are unavailable on FAA NOTAM Search or standard briefing feeds.
Search historical NOTAMs
Enter a 4-letter ICAO aerodrome or FIR code and a date up to two years in the past. Results are delivered to your inbox within seconds.
Start a NOTAM archive search