Pennsylvania, 1999

Strong Wind in Pennsylvania, December 10 to 11, 1999

December 10 to 11, 1999 · NWS PHI · 10 events in 10 counties and zones

A strong cold front moved through Eastern Pennsylvania during the early evening of the 10th. The front was accompanied by strong gusty northwest winds.

Where it happened

Every event with a place to put it; 7 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
10

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS PHI wrote it up.

A strong cold front moved through Eastern Pennsylvania during the early evening of the 10th. The front was accompanied by strong gusty northwest winds. As a low pressure system intensified as it moved across northern New England into the Canadian Maritimes and a large high pressure system built east from the Northern Plains and the Great Lakes, gusty northwest winds continued throughout most of the night. The strongest gusts were in the eastern part of the state. Peak wind gusts included 43 mph at the Philadelphia International Airport and the Wilkes-Barre Scranton Airport (Luzerne County), 38 mph in Doylestown (Bucks County), 36 mph in Pottstown (Montgomery County) and Mount Pocono (Monroe County) and 33 mph at the Lehigh Valley International Airport.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

10 strong wind. Local standard time, as filed.

Strong Wind, Berks

When
December 10, 6:00 PM EST to December 11, 7:00 AM EST
Where
Berks forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
40.416, -75.926 (the zone’s center; the record gives no point)

Strong Wind, Bucks

When
December 10, 6:00 PM EST to December 11, 7:00 AM EST
Where
Bucks forecast zone
Reported by
AWOS,ASOS,MESONET,ETC

Strong Wind, Carbon

When
December 10, 6:00 PM EST to December 11, 7:00 AM EST
Where
Carbon forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
40.918, -75.709 (the zone’s center; the record gives no point)

Strong Wind, Chester

When
December 10, 6:00 PM EST to December 11, 7:00 AM EST
Where
Chester forecast zone
Reported by
AWOS,ASOS,MESONET,ETC

Strong Wind, Delaware

When
December 10, 6:00 PM EST to December 11, 7:00 AM EST
Where
Delaware forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
39.917, -75.399 (the zone’s center; the record gives no point)

Strong Wind, Lehigh

When
December 10, 6:00 PM EST to December 11, 7:00 AM EST
Where
Lehigh forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
40.613, -75.592 (the zone’s center; the record gives no point)

Strong Wind, Monroe

When
December 10, 6:00 PM EST to December 11, 7:00 AM EST
Where
Monroe forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
41.058, -75.339 (the zone’s center; the record gives no point)

Strong Wind, Montgomery

When
December 10, 6:00 PM EST to December 11, 7:00 AM EST
Where
Montgomery forecast zone
Reported by
AWOS,ASOS,MESONET,ETC

Strong Wind, Northampton

When
December 10, 6:00 PM EST to December 11, 7:00 AM EST
Where
Northampton forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
40.754, -75.307 (the zone’s center; the record gives no point)

Strong Wind, Philadelphia

When
December 10, 6:00 PM EST to December 11, 7:00 AM EST
Where
Philadelphia forecast zone
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
40.008, -75.134 (the zone’s center; the record gives no point)

What these are

Strong Wind
Non-thunderstorm winds below high wind criteria that nonetheless caused damage or casualties.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Pennsylvania in 1999Every state in 1999This day in weather historyWarnings in Pennsylvania, December 1999

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5721960, 5721961, 5721962, 5721963, 5721964, 5721965, 5721966, 5721967, 5721968, 5721969.