This alert expired on 5 July 2026 at 22:45 UTC. It is kept here as a record.
It is the 2nd strongest of the 39 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 12 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 5 at 5:43PM EDT until July 5 at 6:45PM EDT by NWS State College PA
An estimated 87,505 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 28, 2026 · score 39 · 3.5 km
- July 19, 2026 · score 63 · 15.0 km
- August 2, 2026 · score 39 · 15.2 km
How we know
Confirmed by 5 independent sources, including NOAA.
Our own score for this event is 39 out of 100, at 87 % 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) | 39 / 100 |
| Our confidence | 87% |
| Coordinates | 40.6743, -78.4134 |
| Nearest City | Altoona (17 km) |
| Population Exposed | 87.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-05T21:43:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.933e434faa329a67606517be89420a82 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cambria, PA; Clearfield, PA; Indiana, PA; Juniata, PA; Mifflin, PA |
| Headline | Severe Thunderstorm Warning issued July 5 at 5:43PM EDT until July 5 at 6:45PM EDT by NWS State College PA |
| Expires | 2026-07-05T18:45:00-04:00 |
| SenderName | NWS State College PA |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.933e434faa329a67606517be89420a82d0d676b3.001.1","noaa_urn:oid:2.49.0.1.840.0.da53123e49f85c91a571cad0e185141275b32803.001.1","noaa_urn:oid:2.49.0.1.840.0.177314e4450834963bedbd944ed61df957dbb277.001.1"] |
| Iem TypeSummary | F |
| Iem City | 1 ENE Tyrone |
| Iem County | Blair |
| Iem State | PA |
| Iem Wfo | CTP |
| Iem Remark | Water up to the bottom of the first floor of the paper mill and Pennsylvania Ave completely underwater. |
| MergedSources | [{"id":"iem_F_40.680_-78.240_1783279800000","source":"iem","severity":"low","severityValue":25,"timestamp":1783279800000,"latitude":40.68,"longitude":-78.24},{"id":"iem_F_40.680_-78.240_1783279980000","source":"iem","severity":"low","severityValue":25,"timestamp":1783279980000,"latitude":40.68,"longitude":-78.24},{"id":"iem_F_40.680_-78.240_1783279680000","source":"iem","severity":"low","severityValue":25,"timestamp":1783279680000,"latitude":40.68,"longitude":-78.24},{"id":"iem_F_40.680_-78.230_1783280400000","source":"iem","severity":"low","severityValue":25,"timestamp":1783280400000,"latitude":40.68,"longitude":-78.23}] |
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 39/100, near Altoona (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.