Armstrong County, Pennsylvania weather alerts

No watches, warnings or advisories are in force for Armstrong County.

Checked Mon, Sep 21, 2026, 2:47 AM EDT. Times are Eastern Daylight Time.

Armstrong County forecast Live radar here

Warnings on the map

Every watch, warning and advisory the National Weather Service has in force over Armstrong County, Pennsylvania. Open it for the live map, where it pans and zooms.

Open the live map with warnings and watches

Map layer from NOAA National Weather Service. Boundaries from the Iowa Environmental Mesonet.

Alerts in force

Nothing is in force for Armstrong County right now. Its warnings come from the National Weather Service and appear here within a minute of being issued; every one of the past year is below.

The past year in Armstrong County

In the past year the National Weather Service issued 189 alerts for Armstrong County, including 44 severe thunderstorm warnings, 25 flash flood warnings, 23 snow squall warnings and 12 flood warnings.

Product	Issued	Most recent
Severe Thunderstorm Warning	44	Sep 12, 2026
Flash Flood Warning	25	Sep 12, 2026
Snow Squall Warning	23	Mar 17, 2026
Flood Warning	12	Sep 12, 2026
Freeze Warning	8	May 12, 2026
Extreme Cold Warning	3	Feb 7, 2026
Extreme Heat Warning	1	Jun 30, 2026
High Wind Warning	1	Mar 13, 2026
Ice Storm Warning	1	Dec 26, 2025
Winter Storm Warning	1	Jan 24, 2026
Severe Thunderstorm Watch	14	Sep 9, 2026
Flood Watch	9	Sep 12, 2026
Freeze Watch	5	May 12, 2026
Tornado Watch	3	Jun 14, 2026
Extreme Cold Watch	2	Feb 7, 2026
Winter Storm Watch	2	Jan 24, 2026
Dense Fog Advisory	11	Aug 21, 2026
Cold Weather Advisory	8	Feb 8, 2026
Winter Weather Advisory	5	Mar 16, 2026
Frost Advisory	4	May 11, 2026
Heat Advisory	3	Sep 2, 2026
Wind Advisory	3	Mar 16, 2026
Freezing Fog Advisory	1	Nov 19, 2025

Warnings issued

And 59 earlier warnings.

Every alert, most recent first

The 40 most recent of 189.

From the Iowa Environmental Mesonet’s archive of NWS watches, warnings and advisories (VTEC), by the county’s own code and the forecast zones inside it. Each date links to the event at the IEM.

Nearby

The counties around Armstrong County, with what is in force in each.

What this means

Warning: The hazard is happening or about to. Act now: a tornado warning means take shelter, a flash flood warning means move to higher ground.
Watch: Conditions favor the hazard. Nothing is happening yet; have a plan and be ready to act if a warning follows.
Advisory: A hazard that is less serious than a warning but can still cause trouble, such as dense fog, heat or light ice.
Statement: Information about weather that does not yet meet a warning: a strong storm, a hydrologic update, or a special weather statement.

Severity (extreme, severe, moderate, minor) is the rating the issuing office gives each product. More on the difference: tornado watch vs. tornado warning. Alerts come from the National Weather Service; follow its instructions and your local officials.

Sources

Alerts from the National Weather Service's public feed, read afresh every minute, and matched to counties and zones by their UGC codes. Warnings from outside the United States come from each country's own meteorological service. Follow the issuing office's instructions and your local officials.