This alert expired on 11 March 2026 at 01:00 UTC. It is kept here as a record.
No stronger detection stands among the 40 recorded within 20 km of this point since 11 March 2026 — one other scored the same.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued March 10 at 7:22PM CDT until March 10 at 8:00PM CDT by NWS Des Moines IA
An estimated 295,979 people live within 50 km of this point.
Nearby, since 11 March 2026
- March 11, 2026 · score 49 · 5.5 km
- July 8, 2026 · score 43 · 7.4 km
- June 11, 2026 · score 37 · 8.3 km
How we know
Confirmed by 4 independent sources, including NOAA.
Our own score for this event is 49 out of 100, at 88 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | high |
| Calamity Score (ours) | 49 / 100 |
| Our confidence | 88% |
| Coordinates | 41.2418, -90.6032 |
| Nearest City | Rock Island (30 km) |
| Population Exposed | 296.0K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-03-11T00:22:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe-Thunderstorm-Warning_noaa_urn-oid-2_49_0_1_840_0_c0108e7f76cfcea3a74866e36b3f6831 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Davis, IA; Knox, IL; Carroll, IL; Whiteside, IL and 17 more areas |
| Headline | Severe Thunderstorm Warning issued March 10 at 7:22PM CDT until March 10 at 8:00PM CDT by NWS Des Moines IA |
| Expires | 2026-03-10T20:00:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| MergedCount | 20 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c0108e7f76cfcea3a74866e36b3f6831eb6c8cb7.001.1","noaa_urn:oid:2.49.0.1.840.0.05cbdebd195ad2a54d69af666a93aa30bf66bc3a.001.1","noaa_urn:oid:2.49.0.1.840.0.25906e853279fadc18473eb0e04c6429a839678a.001.1","noaa_urn:oid:2.49.0.1.840.0.88bbbb7be650aa5d5aa7207484f8bbbd40b06271.001.1","noaa_urn:oid:2.49.0.1.840.0.00dc0292e1fb959b25b490ab7dd10fb42d4c5546.002.1","noaa_urn:oid:2.49.0.1.840.0.6566a4e24acb014fa43924751531c48e5d03a9b9.001.1","noaa_urn:oid:2.49.0.1.840.0.945a676a205c07620ce1ed6d551ca7f979ed4bf0.002.1","noaa_urn:oid:2.49.0.1.840.0.63c36b8c09ce533a61d12aecddbf3d5bc9c5285c.001.1","noaa_urn:oid:2.49.0.1.840.0.388f56ad5181be8909b04a0b0c204deb454e847f.001.1","noaa_urn:oid:2.49.0.1.840.0.2673fd1d801aa71831c7aa91bee6381704bf9ba8.001.1","noaa_urn:oid:2.49.0.1.840.0.a2394d903e00fc8178d1f678779fb16900b19daf.001.1","noaa_urn:oid:2.49.0.1.840.0.f4654ae2a85695d8cf84db9ea15d0a059f6c65b8.001.1","noaa_urn:oid:2.49.0.1.840.0.46ceb1a86155e29a324124ef5711ac9a69a786bb.001.1","noaa_urn:oid:2.49.0.1.840.0.791f510d0228e0524038380ed2cb7665b77a943f.001.1","noaa_urn:oid:2.49.0.1.840.0.152dfc652674543928351fd484503bc4b77060dd.001.1","noaa_urn:oid:2.49.0.1.840.0.53fb52cb53ace1a3b1d919314a733b6b15dfa8e6.002.1","noaa_urn:oid:2.49.0.1.840.0.4a007d0fb3ebf786538cb209f01e66d6874cbf45.001.1","noaa_urn:oid:2.49.0.1.840.0.bc9596e41c3363bda38e76c319cc0dd3c3140c45.001.1","noaa_urn:oid:2.49.0.1.840.0.1a97e6395f31a4f889d63938354336baadcaad1f.001.1","noaa_urn:oid:2.49.0.1.840.0.02255582b5b3d791accec5d89bebad4836e0a13c.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | Albany |
| Spc County | Whiteside |
| Spc State | IL |
| Spc Comments | (DVN) |
| MergedSources | [{"id":"spc_hail_41.24_-90.44_91","source":"spc","severity":"high","severityValue":65,"timestamp":1773188383644,"latitude":41.24,"longitude":-90.44},{"id":"spc_hail_41.54_-90.59_114","source":"spc","severity":"high","severityValue":65,"timestamp":1773188383644,"latitude":41.54,"longitude":-90.59},{"id":"spc_hail_41.79_-90.22_138","source":"spc","severity":"high","severityValue":65,"timestamp":1773187560000,"latitude":41.79,"longitude":-90.22}] |
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.
Want to know when something happens near Rock Island?
Calamity.live data shows a weather event with CalamityScore 49/100, near Rock Island (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.