* WHAT…Heat index values up to 102 expected in the valleys.
* WHERE…In Maryland, Central and Eastern Allegany County. In West
Virginia, Eastern Grant, Eastern Mineral, Hampshire, Hardy, and
Morgan Counties.
* WHEN…For the first Heat Advisory, from 11 AM to 9 PM EDT Monday.
For the second Heat Advisory, from 11 AM to 9 PM EDT Tuesday.
* IMPACTS…Hot temperatures and high humidity may cause heat
illnesses.
No watches are valid as of Mon Jun 23 16:45:02 UTC 2025.
No Mesoscale Discussions are in effect as of Mon Jun 23 16:45:02 UTC 2025.
SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK…
SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK…
The FAA is modernizing the Notice to Airmen (NOTAM) system to improve the delivery of…
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