Heat in Pennsylvania, March 8 to 10, 2000

Name: Heat in Pennsylvania, March 8 to 10, 2000
Start: 2000-03-08T10:00
End: 2000-03-10T17:00
Location: Pennsylvania

March 8 to 10, 2000 · NWS PHI · 10 events in 10 counties and zones

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

Open the live radar over this ground

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 large ridge of high pressure at both the surface and aloft covered the eastern half of the United States as the work week began on March 6th. This ridge remained nearly stationary across the Southeastern United States from the 7th through the 9th. A mild southwest flow that began the afternoon of the 6th became progressively warmer as the work week continued. This climaxed in Eastern Pennsylvania on Wednesday the 8th as one of the warmest days so early in the calendar year. High temperatures were as warm as the lower 80s, breaking the daily high temperature records. Some high level cloudiness on the 9th prevented temperatures from reaching the 80s again, but many locations again set new record highs for the date. A series of cold frontal passages on the 10th and a subsequent onshore flow on the weekend (11th and 12th) brought temperatures down to seasonal levels.The highest readings (all on the 8th) included 82 degrees in West Chester (Chester County), Crum Creek (Delaware County), Reading and Hamburg (Berks County) and at the Franklin Institute (within Philadelphia), 80 degrees at the Philadephia International Airport, Pottstown and Green Lane (Montgomery County) and Valley Forge (Chester County), 79 degrees at the Lehigh Valley International Airport, Easton (Northampton County), Neshaminy Falls and Sellersville (Bucks County), 78 degrees in Doylestown (Bucks County), 77 degrees in Bath (Northampton County), 76 degrees in Perkasie (Bucks County), 74 degrees in Lehighton (Carbon County), 72 degrees in Long Pond (Monroe County) and 71 degrees in Mount Pocono (Monroe County). New daily high temperature records were set on both the 8th (80 degrees) and the 9th (73 degrees) at the Philadelphia International Airport. The high of 80 degrees on the 8th was the earliest in the calendar year that the temperature reached 80 degrees. The previous earliest was March 12th in 1990. The Lehigh Valley International Airport came close to matching this feat with new daily record highs of 79 degrees and 70 degrees on the 8th and 9th respectively.

The radar

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

Open the radar archive at this moment

Event by event

10 heat. Local standard time, as filed.

Heat, Berks

When: March 8, 10:00 AM EST to March 10, 5:00 PM 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)

Heat, Bucks

When: March 8, 10:00 AM EST to March 10, 5:00 PM EST
Where: Bucks forecast zone
Reported by: AWOS,ASOS,MESONET,ETC

Heat, Carbon

When: March 8, 10:00 AM EST to March 10, 5:00 PM 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)

Heat, Chester

When: March 8, 10:00 AM EST to March 10, 5:00 PM EST
Where: Chester forecast zone
Reported by: AWOS,ASOS,MESONET,ETC

Heat, Lehigh

When: March 8, 10:00 AM EST to March 10, 5:00 PM 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)

Heat, Monroe

When: March 8, 10:00 AM EST to March 10, 5:00 PM 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)

Heat, Montgomery

When: March 8, 10:00 AM EST to March 10, 5:00 PM EST
Where: Montgomery forecast zone
Reported by: AWOS,ASOS,MESONET,ETC

Heat, Northampton

When: March 8, 10:00 AM EST to March 10, 5:00 PM 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)

Heat, Philadelphia

When: March 8, 10:00 AM EST to March 10, 5:00 PM 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)

Heat, Delaware

When: March 8, 10:00 AM EST to March 10, 5:00 PM 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)

What these are

Heat: Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.

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

The same day elsewhere

Every storm in Pennsylvania in 2000 Every state in 2000 This day in weather history Warnings in Pennsylvania, March 2000

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: 5134833, 5134834, 5134835, 5134836, 5134839, 5134840, 5134841, 5134842, 5134843, 5135321.