Pennsylvania, 2001

Heavy Rain in Pennsylvania, June 1 to 2, 2001

June 1 to 2, 2001 · NWS PHI · 3 events in 3 counties and zones

Heavy rain fell across much of Bucks County as well as northeast portions of Philadelphia and extreme eastern Montgomery County from the afternoon of the 1st into the early morning of the 2nd. 0 inches with lesser amounts (around an inch) across the rest of southeast Pennsylvania.

Where it happened

Every event with a place to put it; 3 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
3

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.

Heavy rain fell across much of Bucks County as well as northeast portions of Philadelphia and extreme eastern Montgomery County from the afternoon of the 1st into the early morning of the 2nd. Storm totals averaged between 1.5 and 2.0 inches with lesser amounts (around an inch) across the rest of southeast Pennsylvania. Some poor drainage flooding occurred, but no serious stream flooding or damage was reported. Storm totals included 2.04 inches in Doylestown (Bucks County), 1.86 inches in Neshaminy Falls (Bucks County), 1.85 inches at the Northeast Philadelphia Airport, 1.58 inches in New Hope (Bucks County) and 1.53 inches at the Willow Grove NAS (Montgomery County). A warm front over the Ohio Valley on the morning of the 1st moved into New Jersey the morning of the 2nd. A low pressure system developed on the frontal boundary's triple point (the conjunction of the occluded, warm and cold fronts) over Eastern Pennsylvania by the morning of the 2nd and heavier rain fell to the north of this low center across extreme southeast Pennsylvania and central and northern New Jersey.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before the first event at Jun 1, 8:35 AM EST, 3 hours 25 minutes earlier.

Area forecast discussion, Jun 1, 8:35 AM EST, 3 hours 25 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
935 AM EDT FRI JUN 1 2001

...UPDATED...
A SMALL CRAFT ADVISORY WILL BE ISSUED AT THIS POINT.  AS THE MORE
SUBSTANTIAL RAIN MOVES INTO THE REGION THIS EVENING IT SHOULD BEGIN
TO MIX DOWN WINDS IN THE SMALL CRAFT ADVISORY RANGE.

THE REMAINDER OF THE FORECAST WILL BE LEFT AS IT IS.

...EARLY MORNING DISCUSSION...
THIS IS JUNE? MDLS CONT TO SHOW BOUT WITH NXT H5 CLSD LO. WRM FNT
SLATED TO APPRCH AREA TDA WITH SOME RN MOVG INTO AREA THIS AFTN. SFC
LOW TO DVLP AND MOV N OF AREA LT TNGT AND ERLY SAT. BUT B-4 IT
DOES...RN WL FALL OVERNGT. SOME THUNDER PSBL. EVEN SOME R+ NOT OUT
OF QUESTION. ? OF DAY IS IF OUR GRND HAS DRIED OUT ENUF TO TAKE NXT
BATCH OF PSBL HVY RN. WL NOT ISSUE ANY WTCH ATTM AS CURNT SYS...EVEN
WITH CHC OF R+...DOES SEEM TO MOV RIGHT ALNG RATHER QUICKLY.  ONCE
OUT OF AREA...SAT SHUD NOT BE THAT BAD OF A DAY WITH SOMEWHAT OF A
DRYING WESTERLY WND.  NXT SPOKE TO MOV IN AND AFFECT AREA LATER SAT
NGT INTO ERLY SUN.  AFTER THAT...JUST LIKE LAST WK...H5 CLSD LO MOVS
INTO NY STA AND WEAKENS AS IT DOES.  ANY RW ACTVTY SHUD RMN NRN MOST
ZNS. - JWH

.PHI...SMALL CRAFT ADVISORY FROM SANDY HOOK NJ TO FENWICK ISLAND DE
        AND FOR DELAWARE BAY.

IOVINO

The radar

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

Open the radar archive at this moment

Event by event

3 heavy rain. Local standard time, as filed.

Heavy Rain, Bucks

When
June 1, 12:00 PM EST to June 2, 2:00 AM EST
Where
Bucks County, Countywide
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
40.337, -75.107 (the zone’s center; the record gives no point)

Heavy Rain, Montgomery

When
June 1, 12:00 PM EST to June 2, 2:00 AM EST
Where
Montgomery County, (Nxx)nas Willow Grov
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
40.211, -75.367 (the zone’s center; the record gives no point)

Heavy Rain, Philadelphia

When
June 1, 12:00 PM EST to June 2, 2:00 AM EST
Where
Philadelphia County, (Pne)ne Arpt Philade
Reported by
AWOS,ASOS,MESONET,ETC
Coordinates
40.008, -75.134 (the zone’s center; the record gives no point)

What these are

Heavy Rain
Rainfall totals unusual for the place and season that did not produce a flood.

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

The same day elsewhere

More

Every storm in Pennsylvania in 2001Every state in 2001This day in weather historyWarnings in Pennsylvania, June 2001

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: 5255169, 5255170, 5255171.