Alert archive / Pennsylvania / Flash Flood Warnings in 2001
Flash Flood Warning 14, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 16, 2001, 8:18 PM EDT for Bucks County, Montgomery County, Pennsylvania. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 16, 2001, 8:18 PM EDT (00:18 UTC)
- Expired
- Jun 17, 2001, 2:15 AM EDT
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Bucks County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 79 km from the middle of the area, began a volume at 00:19 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.3 hours before the alert went out and 211 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 516 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 617 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS51 KPHI 170022
FFWPHI
PAC017-091-170615-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
818 PM EDT SAT JUN 16 2001
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA
BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA
* UNTIL 215 AM EDT.
* AT 815 PM EDT...WEATHER SERVICE RADAR INDICATED HEAVY RAIN
CONTINUING OVER MUCH OF BUCKS AND MONTGOMERY COUNTIES. RADAR HAS
ESTIMATED UP TO 7 INCHES OF RAIN THUS FAR...WITH THE HEAVIEST IN THE
CENTRAL AND EASTERN SECTIONS OF THE COUNTIES. MORE SHOWERS AND
THUNDERSTORMS ARE EXPECTED THROUGH THE EVENING. WIDESPREAD ROADWAY
FLOODING HAS BEEN REPORTED...ALONG WITH SEVERAL WATER RESCUES FROM
FLOODED AUTOMOBILES.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE
YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER
DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES
CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER
GROUND.
FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER
RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE
TELEVISION OUTLET.
$$
LAT...LON 4015 7474 4009 7490 4015 7503 4007 7512
4011 7523 4004 7530 4027 7565 4057 7524The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 8:15 PM EDT | Flash Flood Warning | PHI | Chester, Delaware, Philadelphia | 6 hr |
| Jun 17, 2:10 AM EDT | Flash Flood Warning | PHI | Bucks, Montgomery | 4 hr |
| Jun 17, 6:05 AM EDT | Flash Flood Warning | PHI | Bucks, Montgomery | 4 hr |
| Jun 17, 6:45 AM EDT | Flash Flood Warning | PHI | Philadelphia | 3 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2001Every flash flood warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.