Chester County, Pennsylvania
To view the watches and warnings information that we have available you will need to select your city, county, or state first.
Enter City, State or Zip Code to Select a Location from the List
Watch/Warnings
Click to view enlarged map

The National Weather Service's Watches, Warnings and Advisories by state counties include: Thunderstorm, Tornado, Flood, Flash Flood, Winter Storm, High Wind, Gale, Small Aircraft, High Surf, Marine, Heat, Air Quality, Ashfall, Hazardous, and Special Statements.
Weather Alerts: Chester County, Pennsylvania
« View county list

Air Quality Alert
PAZ070-071-101>106-212000-
Eastern Chester-Western Chester-Eastern Montgomery-Western
Montgomery-Upper Bucks-Lower Bucks-Delaware-Philadelphia-
345 PM EDT Thu Jul 20 2017

The forecast Friday for The Philadelphia Metro area is code level
yellow...which is moderate...and means people unusually sensitive
to air pollution may be mildly affected. Primary pollutant
will be ozone.

For more information on ground-level ozone and fine
particles...visit www.airnow.gov.

$$

Excessive Heat Warning
DEZ001-NJZ015-017>019-PAZ070-071-102-104-106-211215-
/O.CON.KPHI.EH.W.0002.000000T0000Z-170722T0000Z/
New Castle-Mercer-Gloucester-Camden-Northwestern Burlington-
Delaware-Philadelphia-Eastern Chester-Eastern Montgomery-
Lower Bucks-
Including the cities of Wilmington, Trenton, Glassboro, Camden,
Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia,
West Chester, Kennett Square, Norristown, Lansdale, Morrisville,
and Doylestown
809 PM EDT Thu Jul 20 2017

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT
FRIDAY...

* TEMPERATURES...In the mid 80s.

* HEAT INDEX VALUES...Up to 101 due to temperatures in the mid
80s, and dewpoints around 70.

* IMPACTS...The heat and humidity may cause heat stress during
outdoor exertion or extended exposure.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to the early morning or
the late evening. Know the signs and symptoms of heat exhaustion
and heat stroke. Wear light weight and loose fitting clothing and
be sure to drink plenty of water.

To reduce your risk during outdoor work the Occupational Safety
and Health Administration recommends scheduling frequent rest
breaks in a shaded or air conditioned environment. Anyone
overcome by heat should be moved to a cool shaded location. Heat
stroke is an emergency...call 9 1 1.

An Excessive Heat Warning means that a prolonged period of very
hot temperatures and high humidity will occur. The combination
will create a dangerous situation in which heat related health
problems may develop. Drink plenty of fluids, stay in an air
conditioned environment, stay out of the sun and be sure to check
on elderly relatives and neighbors.

Young children and pets should never be left unattended in a
vehicle under any circumstance. This is especially true during
hot weather when a car's interior can reach lethal temperatures
in a matter of minutes.

&&

$$

National Weather Service

Providing "weather, water cycle, and climate forecasts and warnings for the United States, its territories, adjacent waters and ocean areas, for the protection of life and property and the enhancement of the national economy."
Weather Alerts by Type
Air Quality Alert
Coastal Flood Warning
Dense Fog Advisory
Excessive Heat Warning
Excessive Heat Watch
Fire Weather Warning
Flash Flood Warning
Flash Flood Watch
Flood Advisory
Flood Warning
Heat Advisory
High Surf Advisory
Lake Wind Advisory
Severe Thunderstorm Warning
Severe Thunderstorm Watch
Special Weather Statement
Additional Severe Weather Maps
Severe Outlook Today
Severe Outlook Today
WSI's Severe Outlook Map displays current Watches, Warnings and Advisories via County Fill colors.
Severe Outlook Tomorrow
Severe Outlook Tomorrow
WSI's Severe Outlook Forecast Map displaying projected Watches, Warnings and Advisories.
THUNDERcast
THUNDERcast
The THUNDERcast map shows areas of probability for regional or national thunderstorms for the current day.
1Km Storm Watch
1Km Storm Watch
The 1Km map allows you to view 1 kilometer (km) resolution radar imagery both nationally and regionally.
Metro Storm Watch
Metro Storm Watch
The Metro map allows you to view 1 kilometer (km) resolution radar imagery.
Advertisements
Track Severe Weather on mobile