Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 29 July 2026 at 02:00 UTC. It is kept here as a record.
It is the 12th strongest of the 276 detections recorded within 20 km of this point since 11 March 2026. Another comparable one was recorded here earlier the same day. 23 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Watch issued July 28 at 7:01PM EDT until July 28 at 10:00PM EDT by NWS Baltimore MD/Washington DC
Urban PEI: 96,832 within a heuristic 50 km radius; not unique people.
Nearby, since 11 March 2026
- June 23, 2026 · score 43 · 2.4 km
- July 10, 2026 · score 39 · 4.0 km
- March 16, 2026 · score 51 · 4.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 51 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 51 / 100 |
| Legacy data-support index | 0.79/1 |
| Coordinates | 39.0000, -75.9125 |
| Nearest City | Easton (29 km) |
| Urban exposure index (PEI) | 96.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-28T23:01:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Watch_noaa_urn:oid:2.49.0.1.840.0.b6449ef720e60df201dea0d83fb5c5db |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-28T23:01:00.000Z.
First archived: 2026-07-28T23:49:17.657Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Tornado Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | 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 Indian Head to Cobb Island MD; Tidal Potomac from Cobb Island MD to Smith Point VA; Eastern Bay; Choptank River to Cambridge MD and the Little Choptank River; Patuxent River to Broomes Island MD; Tangier Sound and the inland waters surrounding Bloodsworth Island; Calvert, MD; Charles, MD; St. Marys, MD; King George, VA; Spotsylvania, VA; Stafford, VA; City of Fredericksburg, VA; Dorchester, MD; Somerset, MD; Wicomico, MD; Worcester, MD and 5 more areas |
| Headline | Tornado Watch issued July 28 at 7:01PM EDT until July 28 at 10:00PM EDT by NWS Baltimore MD/Washington DC |
| Expires | 2026-07-28T22:00:00-04:00 |
| SenderName | NWS Baltimore MD/Washington DC |
| HasExactCoords | false |
| MergedCount | 8 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b6449ef720e60df201dea0d83fb5c5dbe49ef70c.005.1","noaa_urn:oid:2.49.0.1.840.0.b6449ef720e60df201dea0d83fb5c5dbe49ef70c.004.1","noaa_urn:oid:2.49.0.1.840.0.014c2cdfc1500eae035811c1eb2fe69a83f4b1a8.003.1","noaa_urn:oid:2.49.0.1.840.0.014c2cdfc1500eae035811c1eb2fe69a83f4b1a8.004.1","noaa_urn:oid:2.49.0.1.840.0.fffaf9d03b1083ce45520b11c0c5f218d12d2613.003.2","noaa_urn:oid:2.49.0.1.840.0.fffaf9d03b1083ce45520b11c0c5f218d12d2613.001.2","noaa_urn:oid:2.49.0.1.840.0.fffaf9d03b1083ce45520b11c0c5f218d12d2613.004.2","noaa_urn:oid:2.49.0.1.840.0.fffaf9d03b1083ce45520b11c0c5f218d12d2613.002.2"] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Review the area, threshold and delivery channel in your account.
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