This alert expired on 14 March 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 14 recorded within 20 km of this point since 13 March 2026 — 3 others scored the same.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 13 at 7:24PM EDT until March 13 at 8:15PM EDT by NWS State College PA
An estimated 42,161 people live within 50 km of this point.
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 89 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 34 / 100 |
| Our confidence | 89% |
| Coordinates | 41.0874, -77.7368 |
| Nearest City | State College (35 km) |
| Population Exposed | 42.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-13T23:24:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe-Thunderstorm-Warning_noaa_urn-oid-2_49_0_1_840_0_ffbf7784051455d4342bc72024fb033f |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Centre, PA; Clearfield, PA; Clinton, PA; Lycoming, PA; Centre, PA; Clearfield, PA; Clinton, PA |
| Headline | Severe Thunderstorm Warning issued March 13 at 7:24PM EDT until March 13 at 8:15PM EDT by NWS State College PA |
| Expires | 2026-03-13T20:15:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ffbf7784051455d4342bc72024fb033f18dc3338.001.1","noaa_urn:oid:2.49.0.1.840.0.97b8b77e85ffdbac19afb0fe976cc9139f36868b.002.1"] |
| Iem TypeSummary | D |
| Iem City | 3 SE Curwensville |
| Iem County | Clearfield |
| Iem State | PA |
| Iem Wfo | CTP |
| Iem Remark | Tree down on house. |
| MergedSources | [{"id":"iem_G_40.990_-78.170_1773442800000","source":"iem","severity":"low","severityValue":25,"timestamp":1773442800000,"latitude":40.99,"longitude":-78.17},{"id":"iem_D_41.010_-78.230_1773441900000","source":"iem","severity":"low","severityValue":25,"timestamp":1773441900000,"latitude":41.01,"longitude":-78.23},{"id":"iem_D_40.980_-78.440_1773441300000","source":"iem","severity":"low","severityValue":25,"timestamp":1773441300000,"latitude":40.98,"longitude":-78.44},{"id":"iem_D_41.070_-78.480_1773442200000","source":"iem","severity":"low","severityValue":25,"timestamp":1773442200000,"latitude":41.07,"longitude":-78.48},{"id":"iem_D_40.940_-78.470_1773440100000","source":"iem","severity":"low","severityValue":25,"timestamp":1773440100000,"latitude":40.94,"longitude":-78.47}] |
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.
Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.