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📊 DATASET DOCUMENTATION FOR OPENDATABAY
Dataset Description
Multi-State Weather Intelligence Archive: NOAA Alert Dataset (December 5-10, 2025)
This dataset contains 2,795 verified weather alerts collected from NOAA's National Weather Service during a major multi-state winter storm event in December 2025. Each alert includes complete metadata with cryptographic verification making this data suitable for legal proceedings, insurance claims, and regulatory compliance.
Purpose: Provide historical weather intelligence for legal documentation, emergency management analysis, maritime safety research, and forecast accuracy studies.
Context: Captured during a significant weather event that produced a 58x spike in alert activity (from 20 to 1,165+ concurrent alerts), including winter storms, marine hazards, and flood warnings across multiple states.
Significance: This is a court-ready, cryptographically verified archive of a major weather event that is no longer available in NOAA's active alert feeds. The dataset demonstrates real-world multi-hazard monitoring during extreme weather conditions.
Dataset Features
CSV File Structure (33 Columns)
Collection Metadata:
- collection_timestamp_utc - UTC timestamp when alert was captured
- collection_timestamp_unix - Unix epoch timestamp
- data_source - NOAA_Weather_Alerts
- sha256_hash - Cryptographic verification hash
- sha512_hash - Enhanced security hash
- collector_name - Daniel Guzman
- collector_uei - Federal contractor ID (SZ14MN3H7J59)
Alert Identification:
- alert_id - Unique alert identifier
- alert_url - NOAA alert reference URL
Alert Classification:
- event_type - Type of weather alert (Small Craft Advisory, Gale Warning, etc.)
- severity - Minor, Moderate, Severe, or Extreme
- urgency - Past, Future, Expected, or Immediate
- certainty - Unknown, Possible, Likely, or Observed
- status - Alert status (Actual, Test, Exercise)
- message_type - Alert, Update, or Cancel
- category - Meteorological category
- response - Recommended action (Execute, Avoid, Monitor)
Geographic Information:
- area_description - Affected counties, zones, regions
- same_codes - FIPS county codes
- ugc_codes - NWS zone codes
Temporal Information:
- sent_time - When NWS issued the alert
- effective_time - When alert becomes active
- onset_time - When hazard begins
- expires_time - When alert ends
- ends_time - When hazard ends
Alert Content:
- headline - Brief summary
- description - Detailed information (WHAT, WHERE, WHEN, IMPACTS)
- instruction - Public safety guidance
Issuer Information:
- sender - Issuing NWS office
- sender_name - Office name
- scope - Public, Restricted, or Private
- language - en-US
- web - Additional information URL
Distribution
Format & Structure
- Format: CSV (Comma-Separated Values)
- Character Encoding: UTF-8
- Compression: ZIP archive
- Total Package Size: ~600 KB (compressed)
Data Volume
- Total Records: 2,795 weather alerts
- Columns: 33 data fields per record
- File Size: ~4.5 MB (uncompressed CSV)
- Documentation: README, Data Dictionary, License
- Time Coverage: December 5-10, 2025 (5 days)
- Collection Frequency: Snapshots every 20-40 minutes
- Alert Types: 30 distinct event categories
Usage
This dataset is ideal for:
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Legal Documentation: Court-ready evidence for weather-related litigation and insurance claims
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Insurance Claims Verification: Validate property damage, business interruption, and marine loss claims
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Emergency Management Analysis: Post-event review of alert timing, response effectiveness, and coordination
-
Maritime Safety Research: Analyze marine hazard patterns and coastal weather impacts
-
Forecast Accuracy Studies: Compare NWS predictions to observed conditions and evaluate certainty levels
-
Software Development: Test weather alert systems and notification platforms with real data
-
Climate Research: Document extreme weather events and study multi-state storm systems
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Business Intelligence: Model weather impacts on logistics, transportation, agriculture, and construction
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Academic Research: Meteorology studies, emergency communication analysis, and public safety research
Coverage
Geographic Coverage
Multi-State: California, Washington, Alaska, plus nationwide counties
Specific High-Impact Regions:
- Alaska: Glacier Bay, Lynn Canal
- Washington: Pierce County, Snohomish County
- Nationwide: Grant, Clay, Lincoln, Jackson, Monroe, Wayne, Franklin, Cass, Mercer, Brown counties
Alert Distribution by Category:
- Coastal/Marine hazards: 46.5% (1,088 alerts)
- Winter weather: 18.7% (332 alerts)
- Wind advisories/warnings: 13.7% (275 alerts)
- Flooding: 7.7% (212 alerts)
- Other hazards: 13.4% (888 alerts)
Time Range
Coverage Period: December 5-10, 2025
Event Timeline:
- December 5: Baseline (20 alerts)
- December 9: Peak storm event (1,610 alerts) - 58x increase
- December 10: Storm continuation (1,165 alerts)
Update Frequency: Data captured every 20-40 minutes
Alert Statistics
Severity Distribution:
- Minor: 988 alerts (35.3%)
- Moderate: 976 alerts (34.9%)
- Severe: 753 alerts (26.9%)
- Extreme: 10 alerts (0.4%)
- Unknown: 68 alerts (2.4%)
Urgency Distribution:
- Expected: 2,390 alerts (85.5%)
- Future: 173 alerts (6.2%)
- Immediate: 137 alerts (4.9%)
- Past: 38 alerts (1.4%)
- Unknown: 57 alerts (2.0%)
Top 5 Event Types:
- Small Craft Advisory: 911 alerts (32.6%)
- Gale Warning: 375 alerts (13.4%)
- Winter Weather Advisory: 332 alerts (11.9%)
- Flood Warning: 212 alerts (7.6%)
- High Wind Warning: 211 alerts (7.5%)
License
Dual License Structure:
NOAA Source Data: Public Domain (U.S. Government Work - 17 U.S.C. § 105)
- No copyright on federal weather data
- Free to use, modify, and distribute
Data Processing & Metadata: Proprietary License
- CSV conversion, metadata structure, cryptographic verification
- Copyright © 2025 Stormwater Intelligence LLC
- Attribution required for commercial use
Permitted Uses:
- ✅ Research, analysis, academic study
- ✅ Software development and testing
- ✅ Business intelligence and planning
- ✅ Legal and insurance documentation
- ✅ Commercial applications (with attribution)
Attribution Requirement:
Guzman, D. (2025). Multi-State Weather Intelligence Archive:
NOAA Alert Dataset (December 5-10, 2025).
Stormwater Intelligence LLC. https://stormintel.net
Who Can Use It
Legal Professionals: Court-ready timestamped evidence for weather-related litigation and expert testimony
Insurance Adjusters: Verify storm damage, flood, wind, and marine loss claims with independently verified data
Emergency Managers: Analyze alert effectiveness, response timelines, and multi-agency coordination
Maritime Operations: Commercial fishing, shipping, coast guard - analyze marine hazard patterns
Data Scientists: Train ML models for weather prediction, alert classification, and risk assessment
Researchers: Academic studies on meteorology, forecast accuracy, emergency communication, climate patterns
Software Developers: Test weather alert systems, build notification platforms, validate data parsing
Business Analysts: Model weather impacts on operations, optimize routing, assess risk exposure
Government Agencies: Post-disaster analysis, policy evaluation, public safety program assessment
Students: Thesis research, class projects, data analysis practice, weather pattern studies
Additional Notes
Data Quality
ARCSEC Protocol Verification:
- Dual cryptographic hashing (SHA-256 + SHA-512)
- Millisecond-precision timestamps
- Immutable metadata
- Independent verification capability
Data Integrity:
- Converted from original NOAA API responses
- No manual editing or cleaning
- Complete alert records preserved
- Cryptographic hashes verify authenticity
Historical Significance
No Longer Publicly Available:
- Active NOAA alerts expire after events
- Historical alerts not archived long-term
- This preserves a major multi-state storm snapshot
- Unique opportunity to analyze significant weather event
Technical Requirements
Software:
- Excel, Google Sheets, LibreOffice (opens CSV directly)
- Python/R/SQL (for advanced analysis)
- Any text editor (to view raw data)
System:
- 100 MB free disk space
- No special software required
Support
Contact:
- Email: dguzman@stormintel.net
- Website: https://stormintel.net
- Organization: Stormwater Intelligence LLC
- Federal ID: UEI SZ14MN3H7J59
Services:
- Data verification assistance
- Custom analysis (additional fee)
- Consultation on data usage
Future Versions
Potential Updates:
- Extended date ranges
- Additional geographic regions
- Integrated forecast data
- Pre-analyzed insights
Dataset ID: MSWIA-DEC2025-V1
Publication Date: December 2025
Version: 1.0
Format: CSV
Records: 2,795
Status: Complete & Verified
Publication Date: December 2025
Version: 1.0
Format: CSV
Records: 2,795
Status: Complete & Verified
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