Calamity
highSevere weatherCalamity Score: 58

Severe weather near Boulder

United StatesSPC

Reported by SPC 171 days ago.

No stronger detection stands among the 158 recorded within 20 km of this point since 12 March 2026 — one other scored the same.

What the source measured

SPC reported: Wind 79 kt near 4 NE Nederland, Boulder, CO. (BOU)

An estimated 1,742,955 people live within 50 km of this point.

Nearby, since 12 March 2026

How we know

Confirmed by 24 independent sources, including SPC.

Our own score for this event is 58 out of 100, at 90 % confidence.

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

Event Data

TypeSevere weather
Severityhigh
Calamity Score (ours)58 / 100
Our confidence90%
Coordinates39.9900, -105.4500
Nearest CityBoulder (15 km)
Population Exposed1.7M within 50 km
Impact Tiersevere
Timestamp2026-03-12T17:26:00.000Z
Sourcehttps://www.spc.noaa.gov/climo/reports/today.html

Score Breakdown

50
intensity
100
population
0
cascading
80
historical

Technical Details

ReportTypewind
Speed79
Location4 NE Nederland
CountyBoulder
StateCO
Comments(BOU)
Iem TypeSummaryN
Iem Magnitude71
Iem UnitMPH
Iem City3 NNE White Ranch Open
Iem CountyJefferson
Iem StateCO
Iem WfoBOU
Iem RemarkMesonet station UP709 Clayws.
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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 58/100, near Boulder (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.