Weather alerts in Pennsylvania, 2007

1,498 weather alerts in 2007, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

Each county as a circle sized by its count in 2007. Tap one for its archive.

Alerts: 1,498
Warnings: 926
Watches: 150
Advisories: 288
Busiest month: June409 alerts
Busiest day: June 27, 200772 alerts

Over time

By month

The alerts

1,498 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	689
Tornado Warning	28
Severe Thunderstorm Watch	31
Tornado Watch	3
Mesoscale Discussion	131
Flooding
Areal Flood Warning	6
Flash Flood Warning	100
River Flood Warning	10
Flash Flood Watch	11
Flood Watch	26
River Flood Watch	6
Areal Flood Advisory	20
River Flood Advisory	3
Winter
Heavy Snow Warning	11
Ice Storm Warning	5
Lake Effect Snow Warning	20
Winter Storm Warning	27
Lake Effect Snow Watch	12
Winter Storm Watch	33
Freezing Rain Advisory	17
Lake Effect Snow Advisory	30
Lake Effect Snow and Blowing Snow Advisory	1
Snow Advisory	32
Snow and Blowing Snow Advisory	6
Winter Weather Advisory	60
Heat
Excessive Heat Warning	5
Excessive Heat Watch	5
Heat Advisory	13
Cold
Freeze Warning	8
Wind Chill Warning	1
Freeze Watch	7
Frost Advisory	27
Wind Chill Advisory	24
Wind and dust
High Wind Warning	5
High Wind Watch	5
Wind Advisory	26
Fire
Red Flag Warning	9
Fire Weather Watch	9
Fog and smoke
Dense Fog Advisory	17
Coast and beach
Coastal Flood Warning	2
Coastal Flood Watch	2
Coastal Flood Advisory	12
Coastal Flood Statement	2
Lakeshore Flood Statement	1

By county

Every county with at least one alert. A county page lists each alert that covered it.

27 more counties

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2006 2008

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.