This alert expired on 10 August 2026 at 04:20 UTC. It is kept here as a record.
No stronger detection stands among the 51 recorded within 20 km of this point since 16 March 2026 — 15 others scored the same. Another comparable one was recorded here earlier the same day. 17 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued August 9 at 11:10PM CDT until August 9 at 11:15PM CDT by NWS Huntsville AL
An estimated 379,183 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 7, 2026 · score 43 · 2.7 km
- August 10, 2026 · score 43 · 12.4 km
- June 23, 2026 · score 43 · 14.9 km
How we know
Confirmed by 5 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 90 % 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) | 43 / 100 |
| Our confidence | 90% |
| Coordinates | 34.5050, -86.6407 |
| Nearest City | Madison (24 km) |
| Population Exposed | 379.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-10T04:10:00.000Z |
Score Breakdown
Technical Details
| Event | Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Marshall, AL; Morgan, AL; Madison, AL |
| Headline | Flood Warning issued August 9 at 11:10PM CDT until August 9 at 11:15PM CDT by NWS Huntsville AL |
| Expires | 2026-08-09T23:20:00-05:00 |
| SenderName | NWS Huntsville AL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b096abb8f2e06f15cdb077de0a071b1a559078f0.001.1","noaa_urn:oid:2.49.0.1.840.0.cf109a43990c575ed02400e4642c840d8aff4825.001.1"] |
| Iem TypeSummary | F |
| Iem City | Somerville |
| Iem County | Morgan |
| Iem State | AL |
| Iem Wfo | HUN |
| Iem Remark | Several inches of rainfall was reported flowing over West Street near Pizza Roma in Somerville. At least 1 inch of water was reported making it into the building at this location. |
| MergedSources | [{"id":"iem_D_34.630_-87.090_1786317360000","source":"iem","severity":"low","severityValue":25,"timestamp":1786317360000,"latitude":34.63,"longitude":-87.09},{"id":"iem_D_34.480_-86.780_1786322700000","source":"iem","severity":"low","severityValue":25,"timestamp":1786322700000,"latitude":34.48,"longitude":-86.78},{"id":"iem_F_34.450_-86.830_1786321440000","source":"iem","severity":"low","severityValue":25,"timestamp":1786321440000,"latitude":34.45,"longitude":-86.83},{"id":"iem_F_34.470_-86.800_1786321500000","source":"iem","severity":"low","severityValue":25,"timestamp":1786321500000,"latitude":34.47,"longitude":-86.8}] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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 43/100, near Madison (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.