postcodealert

Relayed as issued by the UK government; tests are left out of the counts. The feed gives an alert's area as text only, so alerts narrower than a country are not matched to postcodes.

Source: GOV.UK Emergency Alerts. Contains public sector information licensed under the Open Government Licence v3.0 · OGL v3

Status is the worst of three readings. Notices: AMBER while a margin or capacity notice or the Demand Flexibility Service is in force, RED at a High Risk of Demand Reduction or Demand Control Imminent notice. Days 2 to 5: AMBER when the lowest surplus is under 3,000 MW, RED under 0 MW. Next 12 hours: AMBER when the de-rated margin falls under 4,000 MW, RED under 2,000 MW or at a loss-of-load probability of 1%. On 5 years of history a surplus above 6,000 MW two days ahead was almost never followed by a tight day; below zero, about a third were. The forecast further out runs about 1,400 MW optimistic and misses some tight days, so days 6 to 14 are an outlook only.

Source: Contains BMRS data © Elexon Limited copyright and database right 2026 (NESO forecast) · BMRS Data Licence

Covers the operators listed under By operator; Electricity North West is not collected. SP Energy Networks publishes no customer counts.

Unplanned incidents first seen per day

Source: UK Power Networks live faults · CC BY 4.0; Supported by NGED Open Data · NGED Open Data Licence; Supported by Northern Powergrid Open Data · Northern Powergrid Open Data Licence v1.0; SP Energy Networks outage data · CC BY 4.0; SSEN Real Time Outage Dataset · CC BY 4.0

No margin notices are collected yet. Status is a proxy: AMBER when the daily power price is at least 2x its 90-day median or GB medium-range gas in store is below 80% of prior years for the date.

Daily power price gbp per mwh

Source: Contains BMRS data © Elexon Limited copyright and database right 2026 · BMRS Data Licence; Carbon Intensity API (NESO) · CC BY 4.0; Sheffield Solar PV_Live · CC BY 4.0; National Gas data portal; GIE AGSI+

Drought stage and bans from the Environment Agency report dated 2026-11-05. Rows marked public = no are built on water company web pages and stay internal.

England reservoir storage percent

Source: Environment Agency water situation and drought reports · OGL v3; Stream water industry open data · CC BY 4.0; London Datastore · OGL; Water company web pages

One point per area, so a broad indication. Normal is the 1991 to 2020 average for the same days of the year. Freeze then thaw: 2 days with nights at -4°C or below and days no warmer than 2°C, then 7°C or above within 3 days. Heatwave: 3 days in a row at 27°C or above. Both triggers are judgements, not backtested.

Source: Weather data by Open-Meteo.com · CC BY 4.0

Warnings in force daily max

Source: Environment Agency flood-monitoring API · OGL v3

A heat detection is not a confirmed wildfire. Places with detections on 3 or more separate days (steelworks, refineries, flares) are left out, and so is a fire that burns in one place that long. Status follows the fire severity forecast, which covers England and Wales only.

Heat detections per day

Source: NASA FIRMS active fire data (VIIRS) · CC0; Met Office Fire Severity Index via Natural England Open Access

Daily Air Quality Index, 1 (low) to 10 (very high). Status needs at least 2 sites at High or above, so one faulty monitor does not raise it. Measurements are provisional.

Source: © Crown 2026 copyright Defra via uk-air.defra.gov.uk, licenced under the Open Government Licence (OGL) · OGL