NOAA NWS / Event history

Severe Thunderstorm Watch issued October 16 at 3:52PM EDT until October 16 at 8:00PM EDT by NWS Mount Holly NJ

Severe Thunderstorm Watch · Berks, PA; Bucks, PA; Carbon, PA; Chester, PA; Delaware, PA; Lehigh, PA; Monroe, PA; Montgomery, PA; Northampton, PA; Philadelphia, PA. Severe; possible; urgency: future.

See what changed ↓Detailed event record ↗

Bulletin issued: 16 October 2026 at 19:52 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 Mount Holly NJ · Berks, PA; Bucks, PA; Carbon, PA; Chester, PA; Delaware, PA; Lehigh, PA; Monroe, PA; Montgomery, PA; Northampton, PA; Philadelphia, PA
Certainty / urgency: Possible / Future
Message expiry (not hazard end): 17 October 2026 at 00:00 UTC
Forecast onset / end: 16 October 2026 at 19:52 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 IN PENNSYLVANIA THIS WATCH INCLUDES 10 COUNTIES IN EAST CENTRAL PENNSYLVANIA BERKS LEHIGH NORTHAMPTON IN NORTHEAST PENNSYLVANIA CARBON MONROE IN SOUTHEAST PENNSYLVANIA BUCKS CHESTER DELAWARE MONTGOMERY PHILADELPHIA THIS INCLUDES THE CITIES OF ALLENTOWN, BETHLEHEM, DOYLESTOWN, EASTON, JIM THORPE, MEDIA, NORRISTOWN, PHILADELPHIA, READING, STROUDSBURG, AND WEST CHESTER.

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 20:02 UTC

Version 2

Source status changed

Title: Before
Severe Thunderstorm Watch issued October 16 at 1:22PM EDT until October 16 at 8:00PM EDT by NWS Mount Holly NJ
After
Severe Thunderstorm Watch issued October 16 at 3:52PM EDT until October 16 at 8:00PM EDT by NWS Mount Holly NJ
Source updated: Before
16 October 2026 at 17:22 UTC
After
16 October 2026 at 19:52 UTC
Effective from: Before
16 October 2026 at 17:22 UTC
After
16 October 2026 at 19:52 UTC
Forecast onset: Before
16 October 2026 at 17:25 UTC
After
16 October 2026 at 19:52 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 IN PENNSYLVANIA THIS WATCH INCLUDES 10 COUNTIES IN EAST CENTRAL PENNSYLVANIA BERKS …
After
SEVERE THUNDERSTORM WATCH 686 REMAINS VALID UNTIL 8 PM EDT THIS EVENING FOR THE FOLLOWING AREAS IN PENNSYLVANIA THIS WATCH INCLUDES 10 COUNTIES IN EAST CENTRAL PENNSYLVANIA BERKS …
External source link: Before
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a207b769d8fc569a7fdf1ed35ad3df7534d36f01.001.1
After
https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.24d8f1bf359c11b269c0d96f2d1201c561dda55a.003.1

Bulletin issued: 16 October 2026 at 19:52 UTC

View saved version 2

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

{
  "id": "nws:4fb506ab43f11bcb10796767",
  "authorityId": "urn:oid:2.49.0.1.840.0.24d8f1bf359c11b269c0d96f2d1201c561dda55a.003.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [
    {
      "identifier": "urn:oid:2.49.0.1.840.0.a207b769d8fc569a7fdf1ed35ad3df7534d36f01.001.1",
      "sender": "w-nws.webmaster@noaa.gov"
    }
  ],
  "category": "weather",
  "title": "Severe Thunderstorm Watch issued October 16 at 3:52PM EDT until October 16 at 8:00PM EDT by NWS Mount Holly NJ",
  "eventType": "Severe Thunderstorm Watch",
  "occurredAt": "2026-10-16T19:52:00.000Z",
  "issuedAt": "2026-10-16T19:52:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-16T19:52:00.000Z",
  "onsetAt": "2026-10-16T19:52:00.000Z",
  "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": "Berks, PA; Bucks, PA; Carbon, PA; Chester, PA; Delaware, PA; Lehigh, PA; Monroe, PA; Montgomery, PA; Northampton, PA; Philadelphia, PA",
  "coordinates": null,
  "issuer": "NWS Mount Holly NJ",
  "summary": "Severe Thunderstorm Watch · Berks, PA; Bucks, PA; Carbon, PA; Chester, PA; Delaware, PA; Lehigh, PA; Monroe, PA; Montgomery, PA; Northampton, PA; Philadelphia, PA. Severe; possible; urgency: future.",
  "description": "SEVERE THUNDERSTORM WATCH 686 REMAINS VALID UNTIL 8 PM EDT THIS\nEVENING FOR THE FOLLOWING AREAS\n\nIN PENNSYLVANIA THIS WATCH INCLUDES 10 COUNTIES\n\nIN EAST CENTRAL PENNSYLVANIA\n\nBERKS                 LEHIGH                NORTHAMPTON\n\nIN NORTHEAST PENNSYLVANIA\n\nCARBON                MONROE\n\nIN SOUTHEAST PENNSYLVANIA\n\nBUCKS                 CHESTER               DELAWARE\nMONTGOMERY            PHILADELPHIA\n\nTHIS INCLUDES THE CITIES OF ALLENTOWN, BETHLEHEM, DOYLESTOWN,\nEASTON, JIM THORPE, MEDIA, NORRISTOWN, PHILADELPHIA, READING,\nSTROUDSBURG, AND WEST CHESTER.",
  "instruction": "",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.24d8f1bf359c11b269c0d96f2d1201c561dda55a.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 1:22PM EDT until October 16 at 8:00PM EDT by NWS Mount Holly NJ. We have no earlier saved version to compare.

Bulletin issued: 16 October 2026 at 17:22 UTC

View saved version 1

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

{
  "id": "nws:1dba9b3949edeee1db8bcb29",
  "authorityId": "urn:oid:2.49.0.1.840.0.a207b769d8fc569a7fdf1ed35ad3df7534d36f01.001.1",
  "sender": "w-nws.webmaster@noaa.gov",
  "references": [],
  "category": "weather",
  "title": "Severe Thunderstorm Watch issued October 16 at 1:22PM EDT until October 16 at 8:00PM EDT by NWS Mount Holly NJ",
  "eventType": "Severe Thunderstorm Watch",
  "occurredAt": "2026-10-16T17:22:00.000Z",
  "issuedAt": "2026-10-16T17:22:00.000Z",
  "timeBasis": "Bulletin issued",
  "effectiveAt": "2026-10-16T17:22:00.000Z",
  "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": "Berks, PA; Bucks, PA; Carbon, PA; Chester, PA; Delaware, PA; Lehigh, PA; Monroe, PA; Montgomery, PA; Northampton, PA; Philadelphia, PA",
  "coordinates": null,
  "issuer": "NWS Mount Holly NJ",
  "summary": "Severe Thunderstorm Watch · Berks, PA; Bucks, PA; Carbon, PA; Chester, PA; Delaware, PA; Lehigh, PA; Monroe, PA; Montgomery, PA; Northampton, PA; Philadelphia, PA. 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\nIN PENNSYLVANIA THIS WATCH INCLUDES 10 COUNTIES\n\nIN EAST CENTRAL PENNSYLVANIA\n\nBERKS                 LEHIGH                NORTHAMPTON\n\nIN NORTHEAST PENNSYLVANIA\n\nCARBON                MONROE\n\nIN SOUTHEAST PENNSYLVANIA\n\nBUCKS                 CHESTER               DELAWARE\nMONTGOMERY            PHILADELPHIA\n\nTHIS INCLUDES THE CITIES OF ALLENTOWN, BETHLEHEM, DOYLESTOWN,\nEASTON, JIM THORPE, MEDIA, NORRISTOWN, PHILADELPHIA, READING,\nSTROUDSBURG, AND WEST CHESTER.",
  "instruction": "",
  "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a207b769d8fc569a7fdf1ed35ad3df7534d36f01.001.1",
  "source": "nws",
  "sourceName": "NOAA NWS"
}

Visit the external source ↗

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