Right now
The most recent data we hold from HEAT GOV arrived 2 hours ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
This alert is in force until 3 October 2026, 10:00 UTC.
It is the only one we have recorded within 20 km of this point since 3 October 2026.
What the source measured
HEAT GOV reported: * WHAT...Temperatures in the middle 90s to near 103 expected. Mild lows in the upper 60s to middle 70s in the higher elevations will limit overnight recovery. * WHERE...North Bay Interior Valleys. * WHEN...From 11 AM Saturday to 10 PM PDT Monday. * IMPACTS...This level of heat affects anyone w...
Urban PEI: 3,195,001 within a heuristic 50 km radius; not unique people.
How we know
One source: HEAT GOV. Not yet confirmed by a second, independent source.
Our own score for this event is 46 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 v5. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 46 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 38.1511, -122.5064 |
| Nearest City | Novato (7 km) |
| Urban exposure index (PEI) | 3.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-10-03T18:00:00.000Z |
| Source | http://www.weather.gov |
Physical priority index · v5. 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: heat_gov. Occurrence: 2026-10-03T18:00:00.000Z.
First archived: 2026-10-02T18:39:01.210Z. 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 | Heat Advisory |
| Urgency | Expected |
| Certainty | Likely |
| Onset | 2026-10-03T11:00:00-07:00 |
| Expires | 2026-10-03T03:00:00-07:00 |
| AreaDesc | North Bay Interior Valleys |
| SenderName | NWS San Francisco CA |
| ZonesUsedForCentroid | 1 |
| ZoneCount | 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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