Alert archive / Pennsylvania / Flash Flood Warnings in 2018
Flash Flood Warning 54, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 11, 2018, 5:19 AM EDT for Berks County, Pennsylvania. It was in force for 3 hr. 2 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
- Aug 11, 2018, 5:19 AM EDT (09:19 UTC)
- Expired
- Aug 11, 2018, 8:48 AM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 151 km from the middle of the area, began a volume at 09:19 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 11, 5:53 AM EDT | FLASH FLOOD | Garfield, PA | VEHICLE STUCK IN FLOOD WATERS AND A WATER RESCUE IN PROGRESS AT PLUM CREEK ROAD AND BLOOMSBURG ROAD IN PENN TWP. |
| Aug 11, 6:23 AM EDT | FLOOD | 1 Se Dauberville, PA | FLOODING ON STATE HIGHWAY 61 BETWEEN INDIAN MANOR ROAD AND BELLEMANS CHURCH ROAD. ALL LANES CLOSED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 9.3 hours before the alert went out and 198 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
- 71 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 1765 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- -11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
432
WGUS51 KPHI 110919
FFWPHI
PAC011-111315-
/O.NEW.KPHI.FF.W.0054.180811T0919Z-180811T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
519 AM EDT SAT AUG 11 2018
The National Weather Service in Mount Holly NJ has issued a
* Flash Flood Warning for...
Central Berks County in eastern Pennsylvania...
* Until 915 AM EDT.
* At 518 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to three inches of rain have
already fallen near Bernville and Fairview Hgts, most of which
occurring in the past hour. Flash flooding is expected to begin
shortly in the areas of heaviest rain.
* Some locations that could experience flooding include...
Reading, Wyomissing, Hamburg, Sinking Spring, Laureldale,
Womelsdorf, Wernersville, Newmanstown, Leesport, Shoemakersville,
Bernville, Strausstown, Spring Ridge, Fairview Hgts, Shillington,
West Reading, Mount Penn, Mohnton, Kenhorst and St. Lawrence.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 4058 7591 4034 7581 4027 7608 4031 7614
4036 7621 4037 7623 4046 7637
$$
CMS3 follow-up statements
801
WGUS71 KPHI 110958
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
558 AM EDT SAT AUG 11 2018
PAC011-111315-
/O.CON.KPHI.FF.W.0054.000000T0000Z-180811T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-
558 AM EDT SAT AUG 11 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 AM EDT FOR
CENTRAL BERKS COUNTY...
At 556 AM EDT, local law enforcement reported flash flooding in
Bernville with a water rescue in progress at the intersection of
Plum Creek Road and Bloomsburg Road. Four inches of rain may have
fallen in this area in a little over an hour. Flash flooding is
already occurring.
Some locations that could experience flooding include...
Reading, Wyomissing, Hamburg, Sinking Spring, Laureldale, Womelsdorf,
Wernersville, Newmanstown, Leesport, Shoemakersville, Bernville,
Strausstown, Spring Ridge, Fairview Hgts, Shillington, West Reading,
Mount Penn, Mohnton, Kenhorst and St. Lawrence.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 4058 7591 4034 7581 4027 7608 4031 7614
4036 7621 4037 7623 4046 7637
$$
CMS764
WGUS71 KPHI 111043
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
643 AM EDT SAT AUG 11 2018
PAC011-111315-
/O.CON.KPHI.FF.W.0054.000000T0000Z-180811T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-
643 AM EDT SAT AUG 11 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 AM EDT FOR
CENTRAL BERKS COUNTY...
At 641 AM EDT, local law enforcement reported flash flooding in
Leesport. State Highway 61 is closed between Indian Manor Drive and
Bellemans Church Road. Though the heaviest rain has temporarily
ended, runoff from earlier storms will continue to cause flash
flooding for the next couple of hours.
Some locations that could experience flooding include...
Reading, Hamburg, Laureldale, Womelsdorf, Wernersville, Newmanstown,
Leesport, Shoemakersville, Bernville, Strausstown, Fairview Hgts,
Spring Ridge and Centerport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 4040 7583 4031 7614 4036 7621 4037 7623
4046 7637 4058 7591
$$
CMS272
WGUS71 KPHI 111248
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
848 AM EDT SAT AUG 11 2018
PAC011-111256-
/O.CAN.KPHI.FF.W.0054.000000T0000Z-180811T1315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-
848 AM EDT SAT AUG 11 2018
...THE FLASH FLOOD WARNING FOR CENTRAL BERKS COUNTY IS CANCELLED...
The heavy rain had ended several hours ago. Flood waters have
receded with Berks County 911 Center reporting several roads that
were flooded early this morning have since reopened. Flooding is no
longer expected to pose a threat.
LAT...LON 4040 7583 4031 7614 4036 7621 4037 7623
4046 7637 4058 7591
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 2:25 AM EDT | Special Weather Statement | PHI | Berks | 65 min |
| Aug 11, 3:24 AM EDT | Flash Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 20 hr |
| Aug 11, 3:26 AM EDT | Special Weather Statement | PHI | Berks | 64 min |
| Aug 11, 4:17 AM EDT | Areal Flood Advisory | PHI | Berks | 4 hr |
| Aug 11, 4:26 AM EDT | Coastal Flood Advisory | PHI | Bucks, Delaware, Philadelphia | 24 hr |
| Aug 11, 5:27 AM EDT | Areal Flood Advisory | PHI | Northampton | 4 hr |
| Aug 11, 6:06 AM EDT | Areal Flood Advisory | PHI | Bucks, Northampton | 6 hr |
| Aug 11, 6:31 AM EDT | Areal Flood Advisory | PHI | Bucks | 7 hr |
| Aug 11, 12:16 PM EDT | Special Weather Statement | PHI | Chester | 29 min |
| Aug 11, 12:48 PM EDT | Areal Flood Advisory | PHI | Chester | 3 hr |
| Aug 11, 1:20 PM EDT | Areal Flood Advisory | PHI | Chester, Montgomery | 3 hr |
| Aug 11, 1:33 PM EDT | Flash Flood Warning | PHI | Chester, Montgomery | 4 hr |
| Aug 11, 1:40 PM EDT | Flash Flood Warning | PHI | Chester | 4 hr |
| Aug 11, 1:48 PM EDT | Flash Flood Warning | PHI | Delaware, Philadelphia | 4 hr |
| Aug 11, 1:51 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 39 min |
| Aug 11, 2:00 PM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Northampton | 9 hr |
| Aug 11, 2:14 PM EDT | Flash Flood Warning | PHI | Bucks | 3 hr |
| Aug 11, 2:26 PM EDT | Special Weather Statement | PHI | Bucks, Philadelphia | 34 min |
| Aug 11, 2:42 PM EDT | Special Weather Statement | PHI | Bucks | 33 min |
| Aug 11, 3:06 PM EDT | Flash Flood Warning | PHI | Northampton | 4 hr |
| Aug 11, 3:50 PM EDT | Areal Flood Advisory | PHI | Berks, Montgomery | 115 min |
| Aug 11, 4:19 PM EDT | Areal Flood Advisory | PHI | Chester | 3 hr |
| Aug 11, 4:19 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 29 min |
| Aug 11, 4:47 PM EDT | Special Weather Statement | PHI | Montgomery | 28 min |
| Aug 11, 4:52 PM EDT | Areal Flood Advisory | PHI | Carbon, Lehigh | 2 hr |
| Aug 11, 5:36 PM EDT | Areal Flood Warning | PHI | Bucks | 4 hr |
| Aug 11, 5:58 PM EDT | Areal Flood Advisory | PHI | Chester, Delaware, Montgomery, Philadelphia | 5 hr |
| Aug 11, 6:13 PM EDT | Special Weather Statement | PHI | Chester | 32 min |
Nearby
Flash Flood Warnings in Pennsylvania, 2018Every flash flood warning in 2018
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.