Calamity
mediumSevere weatherCalamity Score: 39

Severe weather in United States

PutnamUnited StatesNOAA

This alert expired on 30 May 2026 at 22:30 UTC. It is kept here as a record.

It is the 36th strongest of the 76 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Severe Thunderstorm Warning issued May 30 at 5:46PM EDT until May 30 at 6:30PM EDT by NWS Jacksonville FL

An estimated 82,893 people live within 50 km of this point.

Nearby, since 15 March 2026

How we know

One source: NOAA. Not yet confirmed by a second, independent source.

Our own score for this event is 39 out of 100, at 81 % confidence.

The score is ours, computed from intensity, exposed population and local history — not the source’s.

Event Data

TypeSevere weather
Severitymedium
Calamity Score (ours)39 / 100
Our confidence81%
Coordinates29.6200, -81.5600
Nearest CityPalm Coast (34 km)
Population Exposed82.9K within 50 km
Impact Tiersignificant
Timestamp2026-05-30T21:46:00.000Z
Sourcehttps://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.e3a668b1cf26681c59af5fc99a2a4b54b9c5513c.001.1

Score Breakdown

35
intensity
55
population
0
cascading
80
historical

Technical Details

EventSevere Thunderstorm Warning
UrgencyImmediate
CertaintyObserved
AreaDescFlagler, FL; Putnam, FL; St. Johns, FL
HeadlineSevere Thunderstorm Warning issued May 30 at 5:46PM EDT until May 30 at 6:30PM EDT by NWS Jacksonville FL
Expires2026-05-30T18:30:00-04:00
SenderNameNWS Jacksonville FL
HasExactCoordstrue

Safety Information

Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.

Series begins 10 February 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.

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Calamity.live data shows a weather event with CalamityScore 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.