Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 12 July 2026 at 01:00 UTC. It is kept here as a record.
It is the 26th strongest of the 150 detections recorded within 20 km of this point since 9 March 2026. The last comparable one was on 10 July 2026. 30 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued July 11 at 1:55PM CDT until July 11 at 8:00PM CDT by NWS Memphis TN
Urban PEI: 490,916 within a heuristic 50 km radius; not unique people.
Nearby, since 9 March 2026
- July 11, 2026 · score 43 · 0.0 km
- July 10, 2026 · score 43 · 0.0 km
- July 9, 2026 · score 43 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 43 / 100 |
| Legacy data-support index | 0.80/1 |
| Coordinates | 34.8000, -92.2000 |
| Nearest City | Sherwood (3 km) |
| Urban exposure index (PEI) | 490.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-11T18:55:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Watch_noaa_urn:oid:2.49.0.1.840.0.4e9914eddeea96fdd9f94ff24961d0ba |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-11T18:55:00.000Z.
First archived: 2026-07-11T21:39:11.997Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Craighead, AR; Crittenden, AR; Cross, AR; Greene, AR; Lee, AR; Mississippi, AR; Poinsett, AR; St. Francis, AR; Dunklin, MO; Pemiscot, MO; Alcorn, MS; Benton, MS; DeSoto, MS; Marshall, MS; Prentiss, MS; Tate, MS; Tippah, MS; Tishomingo, MS; Tunica, MS; Benton, TN; Carroll, TN; Chester, TN; Crockett, TN; Decatur, TN; Dyer, TN; Fayette, TN; Gibson, TN; Hardeman, TN; Hardin, TN; Haywood, TN; Henderson, TN; Lauderdale, TN; McNairy, TN; Madison, TN; Shelby, TN; Tipton, TN; Baxter, AR; Boone, AR; Cleburne, AR; Conway, AR; Faulkner, AR; Independence, AR; Izard, AR; Jackson, AR; Johnson, AR; Lawrence, AR; Logan, AR; Lonoke, AR; Marion, AR; Monroe, AR; Newton, AR; Perry, AR; Pope, AR; Prairie, AR; Pulaski, AR; Scott, AR; Searcy, AR; Sharp, AR; Stone, AR; Van Buren, AR; White, AR; Woodruff, AR; Yell, AR |
| Headline | Severe Thunderstorm Watch issued July 11 at 1:55PM CDT until July 11 at 8:00PM CDT by NWS Memphis TN |
| Expires | 2026-07-11T20:00:00-05:00 |
| SenderName | NWS Memphis TN |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.4e9914eddeea96fdd9f94ff24961d0ba212a0577.001.1","noaa_urn:oid:2.49.0.1.840.0.a63b47141186f4b2283c007bebfb3599c12156f0.001.1"] |
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 8 March 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.
Review the area, threshold and delivery channel in your account.
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