Allegheny County, PA
Alerts
Alerts are listed in order of start time and level of severity. Click on the alert title to read details for each alert.
In effect from Monday 04/20 2:00 AM EDT – Monday 04/20 10:00 AM EDT
Issued by NWS Pittsburgh PA
What
Temperatures as low as 33 will result in frost formation.
Where
Portions of east central Ohio, southwest and western Pennsylvania, and northern and the northern panhandle of West Virginia.
When
From 2 AM to 10 AM EDT Monday.
Impacts
Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Additional Details
With elevated wind and scattered light precipitation overnight, frost development will be highly localized to areas that are most sheltered from wind.
What to do
Take steps now to protect tender plants from the cold.
Areas impacted
- Belmont
- Noble
- Monroe
- Allegheny
- Washington
- Greene
- Westmoreland
- Fayette
- Brooke
- Ohio
- Marshall
- Wetzel
- Marion
- Monongalia
Tips to stay safe
A Frost Advisory means that your area is likely to see frost developing overnight, which can harm young or vulnerable plants. Cover these plants before the sun goes down to help them retain heat.
Briefing
From the forecaster
Freezing Conditions Tonight and Monday Night
Created by the NWS Pittsburgh WFO
Temperatures will fall below freezing across portions of the area tonight into Monday morning. More widespread freezing temperatures are expected Monday night into Tuesday morning. Frost and Freeze headlines are in effect.
Seven-day weather risk overview
Daily weather risk summary
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