Alert archive / Pennsylvania / Flash Flood Warnings in 2019
Flash Flood Warning 44, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 11, 2019, 3:00 PM EDT for Berks County, Chester County, Montgomery County, Pennsylvania. It was in force for 8 hr. 34 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
- Jul 11, 2019, 3:00 PM EDT (19:00 UTC)
- Expired
- Jul 11, 2019, 11:00 PM EDT
- In force
- 8 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Berks County, PA, Chester County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 119 km from the middle of the area, began a volume at 19:03 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 |
|---|---|---|---|
| Jul 11, 3:25 PM EDT | HEAVY RAIN 2 | Gilbertsville, PA | ONE HOUR TOTAL. |
| Jul 11, 3:37 PM EDT | FLASH FLOOD | Douglass Twp, PA | WATER RESCUE FROM VEHICLE AT INTERSECTION OF READING AVE AND TROUT RUN DR. |
| Jul 11, 3:37 PM EDT | HEAVY RAIN 3.16 | 1 N Colebrookdale Twp, PA | ONE HOUR TOTAL. |
| Jul 11, 3:38 PM EDT | FLOOD | 1 W Pottstown, PA | SIGNIFICANT STREET FLOODING OCCURRING AT HIGH ST. AND COLLEGE DR. |
| Jul 11, 4:27 PM EDT | FLASH FLOOD | 2 Ene Gilbertsville, PA | WATER RESCUE ON SASSAMANSVILLE RD AT KULPS RD. |
| Jul 11, 4:30 PM EDT | FLASH FLOOD | 2 S Douglass Twp, PA | *** 2 FATAL *** A PREGNANT WOMAN AND HER SON WERE TRAPPED IN A CAR THAT FLIPPED OVER AFTER BEING SWEPT AGAINST A GUARDRAIL ON GRIST MILL ROAD NEAR LOCUST ROAD IN DOUGLASS TOWNSHIP ALONG THE IRONSTONE CREEK. THE TWO WERE TRAPPED INSIDE THE VEHICLE AND THE RESCU |
| Jul 11, 4:49 PM EDT | FLASH FLOOD | 1 Wsw Boyertown, PA | WATER RESCUE REPORTED ON S READING AVE AT WATER ST. |
| Jul 11, 4:53 PM EDT | FLASH FLOOD | Bechtelsville, PA | RT. 100 CLOSED DUE TO FLOODING. |
| Jul 11, 4:54 PM EDT | FLASH FLOOD | 1 N Gilbertsville, PA | WATER RESCUE ON SWAMP CREEK RD AT SCHLEGEL RD. |
| Jul 11, 5:10 PM EDT | FLASH FLOOD | 3 Ne Gilbertsville, PA | WATER RESCUE ON HOFFMANSVILLE RD AT GREEN HILL RD. |
| Jul 11, 5:15 PM EDT | HEAVY RAIN 4.58 | 1 E Earl Twp, PA | WIDESPREAD FLOODING ALSO REPORTED. |
| Jul 11, 5:20 PM EDT | FLASH FLOOD | 2 S Douglass Twp, PA | VEHICLE STRANDED IN FLOOD WATERS NEAR INTERSECTION OF GRIST MILL RD AND LOCUST DR WITH A RESCUE OF TWO PEOPLE. VEHICLE WAS LATER CARRIED AWAY BY FLOOD WATER. |
| Jul 11, 5:26 PM EDT | FLASH FLOOD | Amity Gardens, PA | RESIDENCE WITH 5 FEET OF WATER IN BASEMENT. |
| Jul 11, 5:30 PM EDT | HEAVY RAIN 4.6 | 1 Sse Earl Twp, PA | COCORAHS STATION PA-BR-11 BOYERTOWN 2.5 WNW. |
| Jul 11, 5:35 PM EDT | FLASH FLOOD | Douglassville, PA | ROUTE 422 IMPASSIBLE IN DOUGLASSVILLE DUE TO FLASH FLOODING. |
| Jul 11, 5:45 PM EDT | FLASH FLOOD | Pottstown, PA | WATER RESCUE ON MANATAWNY ST AT KING ST. |
| Jul 11, 5:54 PM EDT | FLASH FLOOD | West Nantmeal Twp., PA | WATER RESCUE ON CHESTNUT TREE RD AT POND HILL DR. |
| Jul 11, 6:14 PM EDT | FLASH FLOOD | 1 Ese Douglass Twp, PA | WATER RESCUE REPORTED ON FARMINGTON AVE AT ENGLESVILLE RD. |
| Jul 11, 6:20 PM EDT | HEAVY RAIN 4.62 | New Hanover, PA | STORM TOTAL FROM TODAY. |
| Jul 11, 6:21 PM EDT | FLASH FLOOD | 1 Se North Coventry Twp, PA | WATER RESCUE ON MILLER RD AT E CEDARVILLE RD. |
| Jul 11, 6:56 PM EDT | HEAVY RAIN 4.05 | Gilbertsville, PA | STORM TOTAL. |
| Jul 11, 7:03 PM EDT | FLASH FLOOD | Bechtelsville, PA | HOMES OR BUILDINGS FILLED WITH WATER. |
| Jul 11, 7:06 PM EDT | FLASH FLOOD | 3 Ne Lower Pottsgrove T, PA | WATER RESCUE ON COLONIAL RD AT FAGLEYSVILLE RD. |
| Jul 11, 7:26 PM EDT | FLASH FLOOD | 1 Wsw Perkiomenville, PA | WATER RESCUE ON SNYDER RD. |
| Jul 11, 7:30 PM EDT | FLASH FLOOD | 1 S Bechtelsville, PA | EVACUATIONS OF CAMPERS OCCURRING AT THE LAZY-K CAMPGROUND NEAR BECHTELSVILLE. TENTS AND CAMPING TRAILERS WERE BEING SWEPT AWAY. |
| Jul 11, 8:59 PM EDT | HEAVY RAIN 4.49 | 2 Sse Earl Twp, PA | MESONET STATION CW3157 BOYERTOWN. |
| Jul 11, 9:27 PM EDT | HEAVY RAIN 4.07 | 1 Ene Union Twp, PA | MESONET STATION TT136 HOPEWELL. |
| Jul 11, 9:31 PM EDT | HEAVY RAIN 3.21 | 1 Ssw Cedarville, PA | MESONET STATION EW5860 POTTSTOWN. |
| Jul 11, 9:37 PM EDT | HEAVY RAIN 3.28 | North Coventry Twp, PA | MESONET STATION AS655 POTTSTOWN. |
| Jul 11, 9:43 PM EDT | HEAVY RAIN 4.05 | 1 Ssw Gilbertsville, PA | MESONET STATION EW1851 GILBERTSVILLE. |
| Jul 11, 9:44 PM EDT | HEAVY RAIN 2.42 | 1 W Pughtown, PA | MESONET STATION PTFST 1 W PUGHTOWN. |
| Jul 11, 9:44 PM EDT | HEAVY RAIN 3.31 | 1 S North Coventry Twp, PA | MESONET STATION PTNCT NORTH COVENTRY TWP. |
| Jul 11, 9:45 PM EDT | HEAVY RAIN 4.03 | 2 Wnw Lower Pottsgrove, PA | MESONET STATION PTTGR POTTSTOWN (HS). |
| Jul 11, 9:45 PM EDT | HEAVY RAIN 4.27 | 3 Nne Lower Pottsgrove, PA | MESONET STATION FW2483 NEW HANOVER. |
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 12:00Z, 7.0 hours before the alert went out and 199 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
- 114 J/kg
- Mixed-layer CIN
- -122 J/kg
- Mixed-layer LCL
- 1075 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
703
WGUS51 KPHI 111900
FFWPHI
PAC011-029-091-112300-
/O.NEW.KPHI.FF.W.0044.190711T1900Z-190711T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
300 PM EDT Thu Jul 11 2019
The National Weather Service in Mount Holly NJ has issued a
* Flash Flood Warning for...
Southeastern Berks County in eastern Pennsylvania...
Northwestern Montgomery County in southeastern Pennsylvania...
North central Chester County in southeastern Pennsylvania...
* Until 700 PM EDT.
* At 259 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Flash flooding is expected in
the areas of heaviest rain.
* Some locations that could experience flooding include...
Pottstown, Birdsboro, Elverson, Bechtelsville, Green Lane, New
Morgan, Pughtown, Gilbertsville, Cedarville, Stowe, Boyertown,
Pottsgrove, South Pottstown, Amity Gardens, Sanatoga, Kenilworth,
Halfway House and Lorane.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4041 7564 4033 7547 4015 7567 4010 7582
4013 7587 4013 7588 4015 7589 4021 7599
$$
Kruzdlo3 follow-up statements
792
WGUS71 KPHI 111957
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
357 PM EDT Thu Jul 11 2019
PAC011-029-091-112300-
/O.CON.KPHI.FF.W.0044.000000T0000Z-190711T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-Montgomery PA-Chester PA-
357 PM EDT Thu Jul 11 2019
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR
SOUTHEASTERN BERKS...NORTHWESTERN MONTGOMERY AND NORTH CENTRAL
CHESTER COUNTIES...
At 354 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across portions of the warned area. Over three inches of rain
have already fallen. The heaviest rainfall has occurred between
Bechtelsville southwest to Birdsboro and across the county line into
Pottstown. Roads have been closed in the Pottstown area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 4041 7564 4033 7547 4015 7567 4010 7582
4013 7587 4013 7588 4015 7589 4021 7599
$$
Kruzdlo848
WGUS51 KPHI 112250
FFWPHI
PAC011-029-091-120300-
/O.EXT.KPHI.FF.W.0044.000000T0000Z-190712T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
650 PM EDT Thu Jul 11 2019
The National Weather Service in Mount Holly NJ has extended the
* Flash Flood Warning for...
Southeastern Berks County in eastern Pennsylvania...
Northwestern Montgomery County in southeastern Pennsylvania...
North central Chester County in southeastern Pennsylvania...
* Until 1100 PM EDT.
* At 647 PM EDT, Doppler radar indicated thunderstorms were coming
to an end across the warned area. But with three to six inches of
rain falling earlier today, it will take some time for all the
water to drain. The heaviest rainfall occurred between
Bechtelsville southwest to Birdsboro and across the county line
into Pottstown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 4041 7564 4033 7547 4015 7567 4010 7582
4013 7587 4013 7588 4015 7589 4021 7599
$$
Kruzdlo125
WGUS71 KPHI 120301
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
1101 PM EDT Thu Jul 11 2019
PAC011-029-091-120310-
/O.EXP.KPHI.FF.W.0044.000000T0000Z-190712T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-Montgomery PA-Chester PA-
1101 PM EDT Thu Jul 11 2019
...THE FLASH FLOOD WARNING FOR SOUTHEASTERN BERKS...NORTHWESTERN
MONTGOMERY AND NORTH CENTRAL CHESTER COUNTIES HAS EXPIRED...
An areal flood warning is now in effect. Flood waters will continue
to recede overnight. Please continue to heed any remaining road
closures.
LAT...LON 4041 7564 4033 7547 4015 7567 4010 7582
4013 7587 4013 7588 4015 7589 4021 7599
$$
MeolaThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 3:44 AM EDT | Flash Flood Watch | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more | 18 hr |
| Jul 11, 12:33 PM EDT | Special Weather Statement | PHI | Chester | 57 min |
| Jul 11, 1:23 PM EDT | Special Weather Statement | PHI | Chester, Delaware | 52 min |
| Jul 11, 1:44 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Montgomery, Philadelphia | 61 min |
| Jul 11, 2:41 PM EDT | Special Weather Statement | PHI | Philadelphia | 64 min |
| Jul 11, 2:44 PM EDT | Special Weather Statement | PHI | Bucks, Montgomery | 61 min |
| Jul 11, 2:50 PM EDT | Areal Flood Advisory | PHI | Berks, Chester, Montgomery | 4 hr |
| Jul 11, 3:13 PM EDT | Areal Flood Advisory | PHI | Bucks, Carbon, Lehigh, Monroe, Northampton | 4 hr |
| Jul 11, 3:33 PM EDT | Areal Flood Advisory | PHI | Northampton | 4 hr |
| Jul 11, 3:45 PM EDT | Flash Flood Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 4 hr |
| Jul 11, 4:45 PM EDT | Flash Flood Warning | PHI | Berks, Montgomery | 4 hr |
| Jul 11, 5:12 PM EDT | Flash Flood Warning | PHI | Chester | 4 hr |
| Jul 11, 5:20 PM EDT | Flash Flood Warning | PHI | Bucks, Chester, Montgomery | 4 hr |
| Jul 11, 5:33 PM EDT | Areal Flood Advisory | PHI | Bucks | 4 hr |
| Jul 11, 6:14 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Montgomery, Philadelphia | 61 min |
| Jul 11, 6:15 PM EDT | Flash Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| Jul 11, 6:17 PM EDT | Areal Flood Advisory | PHI | Bucks | 4 hr |
| Jul 11, 6:28 PM EDT | River Flood Warning | PHI | Montgomery | 22 hr |
| Jul 11, 6:57 PM EDT | River Flood Warning | PHI | Montgomery | 12 hr |
| Jul 11, 7:03 PM EDT | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 26 hr |
| Jul 11, 7:19 PM EDT | River Flood Warning | PHI | Chester | 7 hr |
| Jul 11, 7:47 PM EDT | Flash Flood Warning | PHI | Berks, Bucks, Lehigh, Montgomery | 3 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.