Alert archive / Pennsylvania / Flash Flood Warnings in 2019
Flash Flood Warning 21, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 18, 2019, 5:09 PM EDT for Berks County, Lehigh County, Northampton County, Pennsylvania. It was in force for 3 hr. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 18, 2019, 5:09 PM EDT (21:09 UTC)
- Expired
- Jun 18, 2019, 7:51 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Berks County, PA, Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 119 km from the middle of the area, began a volume at 21:12 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 18, 5:15 PM EDT | HEAVY RAIN 2.55 | North Catasauqua, PA | STORM TOTAL RAINFALL. CATASAUQUA AND JORDAN CREEKS NEARING TOP OF BANKS. |
| Jun 18, 5:35 PM EDT | FLOOD | 2 N Emmaus, PA | FLOODING HAS CLOSED THE INTERSECTION OF LEHIGH ST. AND 33RD ST. WATER WAS REPORTED TO THE BOTTOM OF SEVERAL CARS. |
| Jun 18, 7:00 PM EDT | HEAVY RAIN 2.27 | North Catasauqua, PA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.2 hours before the alert went out and 222 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
- 78 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 453 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
342
WGUS51 KPHI 182109
FFWPHI
PAC011-077-095-190115-
/O.NEW.KPHI.FF.W.0021.190618T2109Z-190619T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
509 PM EDT Tue Jun 18 2019
The National Weather Service in Mount Holly NJ has issued a
* Flash Flood Warning for...
Northeastern Berks County in eastern Pennsylvania...
Central Lehigh County in eastern Pennsylvania...
Central Northampton County in eastern Pennsylvania...
* Until 915 PM EDT.
* At 509 PM EDT, Doppler radar indicated heavy rain across the warned
area. Up to two inches of rain have already fallen. Flash flooding
is expected to begin shortly in the areas of heaviest rain.
* Some locations that could experience flooding include...
Allentown, Bethlehem, Emmaus, Northampton, Nazareth, Kutztown,
Bath, Topton, Steuben, Lyons, Lenhartsville, Coffeetown, Ancient
Oaks, Schnecksville, Claussville, Catasauqua, Coplay, Macungie,
North Catasauqua and Alburtis.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 4079 7529 4067 7526 4062 7542 4055 7540
4046 7580 4058 7591
$$
SFJ3 follow-up statements
616
WGUS71 KPHI 182114
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
514 PM EDT Tue Jun 18 2019
PAC011-077-095-190115-
/O.CON.KPHI.FF.W.0021.000000T0000Z-190619T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-Lehigh PA-Northampton PA-
514 PM EDT Tue Jun 18 2019
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR
NORTHEASTERN BERKS...CENTRAL LEHIGH AND CENTRAL NORTHAMPTON
COUNTIES...
At 514 PM EDT, trained weather spotters reported heavy rain in North
Catasauqua. Up to three inches of rain have already fallen. Flash
flooding is expected to begin shortly.
Some locations that could experience flooding include...
Allentown, Bethlehem, Emmaus, Northampton, Nazareth, Kutztown, Bath,
Topton, Steuben, Lyons, Lenhartsville, Coffeetown, Ancient Oaks,
Schnecksville, Claussville, Catasauqua, Coplay, Macungie, North
Catasauqua and Alburtis.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 4079 7529 4067 7526 4062 7542 4055 7540
4046 7580 4058 7591
$$
SFJ976
WGUS71 KPHI 182218
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
618 PM EDT Tue Jun 18 2019
PAC011-077-095-190115-
/O.CON.KPHI.FF.W.0021.000000T0000Z-190619T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-Lehigh PA-Northampton PA-
618 PM EDT Tue Jun 18 2019
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR
NORTHEASTERN BERKS...CENTRAL LEHIGH AND CENTRAL NORTHAMPTON
COUNTIES...
At 617 PM EDT, Doppler radar indicated heavy rain had left the
warned area. However, it will take time for water to recede.
Therefore the threat for flash flooding continues. Up to three
inches of rain have already fallen.
Some locations that could experience flooding include...
Allentown, Bethlehem, Emmaus, Northampton, Nazareth, Kutztown, Bath,
Topton, Steuben, Lyons, Lenhartsville, Coffeetown, Ancient Oaks,
Schnecksville, Claussville, Catasauqua, Coplay, Macungie, North
Catasauqua and Alburtis.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 4079 7529 4067 7526 4062 7542 4055 7540
4046 7580 4058 7591
$$
SFJ114
WGUS71 KPHI 182351 RRA
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
751 PM EDT Tue Jun 18 2019
PAC011-077-095-190001-
/O.CAN.KPHI.FF.W.0021.000000T0000Z-190619T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-Lehigh PA-Northampton PA-
751 PM EDT Tue Jun 18 2019
...THE FLASH FLOOD WARNING FOR NORTHEASTERN BERKS...CENTRAL LEHIGH
AND CENTRAL NORTHAMPTON COUNTIES IS CANCELLED...
Flood waters have receded. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.
LAT...LON 4079 7529 4067 7526 4062 7542 4055 7540
4046 7580 4058 7591
$$
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 11:07 AM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Carbon, Lehigh, Monroe, Northampton | 4 hr |
| Jun 18, 12:38 PM EDT | Areal Flood Advisory | PHI | Bucks, Lehigh, Montgomery | 7 hr |
| Jun 18, 3:26 PM EDT | Flash Flood Warning | PHI | Bucks | 4 hr |
| Jun 18, 3:41 PM EDT | Areal Flood Advisory | PHI | Bucks, Lehigh, Northampton | 4 hr |
| Jun 18, 3:57 PM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Northampton | 4 hr |
| Jun 18, 5:00 PM EDT | Areal Flood Advisory | PHI | Bucks | 67 min |
| Jun 18, 7:24 PM EDT | Areal Flood Warning | PHI | Bucks | 4 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2019Every flash flood warning in 2019
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.