# Heat Advisory: District of Columbia; Frederick; Carroll; Northern Baltimore; Cecil; Southern Baltimore; Prince Georges; Anne Arundel; Charles; St. Marys; Calvert; Northwest Montgomery; Central and Southeast Montgomery; Northwest Howard; Central and Southeast Howard; Northwest Harford; Southeast Harford; Rappahannock; Culpeper; Fairfax; Arlington/Falls Church/Alexandria; Stafford; Spotsylvania; King George; Northern Fauquier; Southern Fauquier; Western Loudoun; Eastern Loudoun; Northwest Prince William; Central and Southeast Prince William/Manassas/Manassas Park — retained record

> Retained us-gov-api record from us-gov-api:noaa-weather.

Canonical: https://highsignal.app/data/records/49cd908d5abbc4cc

[← sources](https://highsignal.app/data)


source: [us-gov-api](https://highsignal.app/data/us-gov-api) (us-gov-api:noaa-weather)  published 2026-07-15 00:49 ingested 2026-07-15 08:14

[original source ↗](http://www.weather.gov/)

## extract

Heat Advisory — District of Columbia; Frederick; Carroll; Northern Baltimore; Cecil; Southern Baltimore; Prince Georges; Anne Arundel; Charles; St. Marys; Calvert; Northwest Montgomery; Central and Southeast Montgomery; Northwest Howard; Central and Southeast Howard; Northwest Harford; Southeast Harford; Rappahannock; Culpeper; Fairfax; Arlington/Falls Church/Alexandria; Stafford; Spotsylvania; King George; Northern Fauquier; Southern Fauquier; Western Loudoun; Eastern Loudoun; Northwest Prince William; Central and Southeast Prince William/Manassas/Manassas Park
Severity: Moderate. Certainty: Likely.
* WHAT...Heat index values up to 105 expected.

* WHERE...Portions of DC, central, north central, northeast,
northern, and southern Maryland, and central, northern, and
northwest Virginia.

* WHEN...From 11 AM this morning to 8 PM EDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

## retained text

The historical document was shared with another weather alert and cannot be attributed to this record. The original extract is preserved above; the exact alert link was not retained.