NOAA NWS / Event history

Severe Thunderstorm Watch issued October 16 at 2:14PM EDT until October 16 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Severe Thunderstorm Watch · Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Chesapeake Bay from Sandy Point to North Beach MD; Chesapeake Bay from North Beach to Drum Point MD; Chesapeake Bay from Drum Point MD to Smith Point VA; Tidal Potomac from Key Bridge to Indian Head MD; Tidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA; Patapsco River including Baltimore Harbor; Patuxent River to Broomes Island MD. Severe; possible; urgency: future.

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Bulletin issued: 16 October 2026 at 18:14 UTC
First saved by us: 16 October 2026 at 17:32 UTC
Last included in a daily record: 16 October 2026
The linked daily edition preserves what we captured that UTC day; this event page is not a live warning.
Source classification: Severe · Source update

A recent feed check does not mean a new observation. This page preserves source records; it does not establish current safety or warning status.

Issuer / area: NWS Baltimore MD/Washington DC · Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Chesapeake Bay from Sandy Point to North Beach MD; Chesapeake Bay from North Beach to Drum Point MD; Chesapeake Bay from Drum Point MD to Smith Point VA; Tidal Potomac from Key Bridge to Indian Head MD; Tidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA; Patapsco River including Baltimore Harbor; Patuxent River to Broomes Island MD
Certainty / urgency: Possible / Future
Message expiry (not hazard end): 17 October 2026 at 00:00 UTC
Forecast onset / end: 16 October 2026 at 18:14 UTC / 17 October 2026 at 00:00 UTC

Archived official description

SEVERE THUNDERSTORM WATCH 686 REMAINS VALID UNTIL 8 PM EDT THIS EVENING FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS CHESAPEAKE BAY NORTH OF POOLES ISLAND MD CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA PATAPSCO RIVER INCLUDING BALTIMORE HARBOR PATUXENT RIVER TO BROOMES ISLAND MD

The saved record

What changed

1 update · 1 first record

Each update compares two versions we saved. This may not include every update from the source. A missing report does not mean an event has ended.

Showing 1 change

Saved by us

16 October 2026 at 18:17 UTC

Version 2

Source status changed

Title: Before
Severe Thunderstorm Watch issued October 16 at 1:25PM EDT until October 16 at 8:00PM EDT by NWS Baltimore MD/Washington DC
After
Severe Thunderstorm Watch issued October 16 at 2:14PM EDT until October 16 at 8:00PM EDT by NWS Baltimore MD/Washington DC
Source updated: Before
16 October 2026 at 17:25 UTC
After
16 October 2026 at 18:14 UTC
Effective from: Before
16 October 2026 at 17:25 UTC
After
16 October 2026 at 18:14 UTC
Forecast onset: Before
16 October 2026 at 17:25 UTC
After
16 October 2026 at 18:14 UTC
Message type: Before
Alert
After
Update
Source status: Before
Source alert
After
Source update
Official description: Before
~~THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 686 IN EFFECT UNTIL 8 PM EDT THIS~~ EVENING FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS CHESAPEAKE BAY NORTH OF POOL…
After
SEVERE THUNDERSTORM WATCH 686 REMAINS VALID UNTIL 8 PM EDT THIS EVENING FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS CHESAPEAKE BAY NORTH OF POOL…
External source link: Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.d54ee2455aac6dec777a7dd5b6efa7d01b64729e.002.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.4a64b59996c32260439e11cfc52cb3a12c3d1c55.003.1

Bulletin issued: 16 October 2026 at 18:14 UTC

View saved version 2

Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.

{
  "id": "nws:700b905113d4ad7f7c146d96",
  "authorityId": "urn:oid:2.49.0.1.840.0.4a64b59996c32260439e11cfc52cb3a12c3d1c55.003.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [
    {
      "identifier": "urn:oid:2.49.0.1.840.0.d54ee2455aac6dec777a7dd5b6efa7d01b64729e.002.1",
      "sender": "w-nws.webmaster@noaa.gov"
    }
  ],
  "category": "weather",
  "title": "Severe Thunderstorm Watch issued October 16 at 2:14PM EDT until October 16 at 8:00PM EDT by NWS Baltimore MD/Washington DC",
  "eventType": "Severe Thunderstorm Watch",
  "occurredAt": "2026-10-16T18:14:00.000Z",
  "issuedAt": "2026-10-16T18:14:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-16T18:14:00.000Z",
  "onsetAt": "2026-10-16T18:14:00.000Z",
  "expiresAt": "2026-10-17T00:00:00.000Z",
  "forecastEndAt": "2026-10-17T00:00:00.000Z",
  "severity": "Severe",
  "urgency": "Future",
  "certainty": "Possible",
  "messageType": "Update",
  "status": "Source update",
  "place": "Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Chesapeake Bay from Sandy Point to North Beach MD; Chesapeake Bay from North Beach to Drum Point MD; Chesapeake Bay from Drum Point MD to Smith Point VA; Tidal Potomac from Key Bridge to Indian Head MD; Tidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA; Patapsco River including Baltimore Harbor; Patuxent River to Broomes Island MD",
  "coordinates": null,
  "issuer": "NWS Baltimore MD/Washington DC",
  "summary": "Severe Thunderstorm Watch · Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Chesapeake Bay from Sandy Point to North Beach MD; Chesapeake Bay from North Beach to Drum Point MD; Chesapeake Bay from Drum Point MD to Smith Point VA; Tidal Potomac from Key Bridge to Indian Head MD; Tidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA; Patapsco River including Baltimore Harbor; Patuxent River to Broomes Island MD. Severe; possible; urgency: future.",
  "description": "SEVERE THUNDERSTORM WATCH 686 REMAINS VALID UNTIL 8 PM EDT THIS\nEVENING FOR THE FOLLOWING AREAS\n\nTHIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS\n\nCHESAPEAKE BAY NORTH OF POOLES ISLAND MD\nCHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD\n\nCHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD\n\nCHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD\n\nCHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA\n\nTIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD\n\nTIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD\n\nTIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA\n\nPATAPSCO RIVER INCLUDING BALTIMORE HARBOR\nPATUXENT RIVER TO BROOMES ISLAND MD",
  "instruction": "",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.4a64b59996c32260439e11cfc52cb3a12c3d1c55.003.1",
  "source": "nws",
  "sourceName": "NOAA NWS"
}

Visit the external source ↗

The external page may have changed since this version was saved.

First saved record · 16 October 2026 at 17:32 UTC

Saved by us

16 October 2026 at 17:32 UTC

Starting point

First saved record

Our first saved version of Severe Thunderstorm Watch issued October 16 at 1:25PM EDT until October 16 at 8:00PM EDT by NWS Baltimore MD/Washington DC. We have no earlier saved version to compare.

Bulletin issued: 16 October 2026 at 17:25 UTC

View saved version 1

Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.

{
  "id": "nws:a880f35cf926562bb07daedf",
  "authorityId": "urn:oid:2.49.0.1.840.0.d54ee2455aac6dec777a7dd5b6efa7d01b64729e.002.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [],
  "category": "weather",
  "title": "Severe Thunderstorm Watch issued October 16 at 1:25PM EDT until October 16 at 8:00PM EDT by NWS Baltimore MD/Washington DC",
  "eventType": "Severe Thunderstorm Watch",
  "occurredAt": "2026-10-16T17:25:00.000Z",
  "issuedAt": "2026-10-16T17:25:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-16T17:25:00.000Z",
  "onsetAt": "2026-10-16T17:25:00.000Z",
  "expiresAt": "2026-10-17T00:00:00.000Z",
  "forecastEndAt": "2026-10-17T00:00:00.000Z",
  "severity": "Severe",
  "urgency": "Future",
  "certainty": "Possible",
  "messageType": "Alert",
  "status": "Source alert",
  "place": "Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Chesapeake Bay from Sandy Point to North Beach MD; Chesapeake Bay from North Beach to Drum Point MD; Chesapeake Bay from Drum Point MD to Smith Point VA; Tidal Potomac from Key Bridge to Indian Head MD; Tidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA; Patapsco River including Baltimore Harbor; Patuxent River to Broomes Island MD",
  "coordinates": null,
  "issuer": "NWS Baltimore MD/Washington DC",
  "summary": "Severe Thunderstorm Watch · Chesapeake Bay north of Pooles Island MD; Chesapeake Bay from Pooles Island to Sandy Point MD; Chesapeake Bay from Sandy Point to North Beach MD; Chesapeake Bay from North Beach to Drum Point MD; Chesapeake Bay from Drum Point MD to Smith Point VA; Tidal Potomac from Key Bridge to Indian Head MD; Tidal Potomac from Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA; Patapsco River including Baltimore Harbor; Patuxent River to Broomes Island MD. Severe; possible; urgency: future.",
  "description": "THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH\n686 IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR THE FOLLOWING AREAS\n\nTHIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS\n\nCHESAPEAKE BAY NORTH OF POOLES ISLAND MD\nCHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD\n\nCHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD\n\nCHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD\n\nCHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA\n\nTIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD\n\nTIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD\n\nTIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA\n\nPATAPSCO RIVER INCLUDING BALTIMORE HARBOR\nPATUXENT RIVER TO BROOMES ISLAND MD",
  "instruction": "",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.d54ee2455aac6dec777a7dd5b6efa7d01b64729e.002.1",
  "source": "nws",
  "sourceName": "NOAA NWS"
}

Visit the external source ↗

The external page may have changed since this version was saved.