What is a freeze watch? Full list of Pennsylvania counties and cities under alert for Monday/Tuesday
Parts of Pennsylvania are under a freeze watch early this week, with forecasters warning that temperatures could drop as low as 29°F on Monday and into the 20s by Tuesday in some regions.
According to the National Weather Service, the alerts are in effect between midnight and 9 am local time, across multiple counties, raising concerns about potential damage to crops, vegetation and outdoor infrastructure.
What is a freeze watch?
A freeze watch is issued when there is a possibility of sub-freezing temperatures, typically in the range of 29°F to 32°F, in the coming days.
The weather service explains that such alerts are used as an early warning before conditions become more certain. If freezing temperatures are confirmed, the watch may be upgraded to a freeze warning.
“Frost and freeze conditions could kill crops, other sensitive vegetation,” the agency cautions, urging residents to take preventive measures.
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Full list of areas under Monday alert
For Monday morning, the freeze watch covers parts of western and central Pennsylvania, including:
Westmoreland Ridges
Fayette Ridges
Higher Elevations of Indiana
Mercer
Venango
Forest
Lawrence
Butler
Clarion
Jefferson
Beaver
Armstrong
Indiana counties
Forecasters say “sub-freezing temperatures as low as 29 degrees [are] possible,” with an even higher risk expected Monday night.
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Full list of areas under Tuesday alert
A separate freeze watch has been issued for southeastern Pennsylvania early Tuesday, affecting:
Western Chester
Eastern Chester
Western Montgomery
Eastern Montgomery
Carbon
Monroe
Berks
Lehigh
Northampton
Bucks counties
Temperatures in these areas could fall further, with “lows in the 20s,” according to the weather service.
What residents should do
Officials warn that freezing conditions can damage crops, kill sensitive plants and affect unprotected plumbing. Residents are advised to cover or bring plants indoors where possible.
With multiple regions under alert and the potential for worsening conditions, the National Weather Service indicated that additional advisories or upgrades may follow.