Alert archive / Pennsylvania / Flash Flood Warnings in 2019
Flash Flood Warning 46, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 11, 2019, 4:45 PM EDT for Berks County, Montgomery County, Pennsylvania. It was in force for 4 hr. 13 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, 4:45 PM EDT (20:45 UTC)
- Expired
- Jul 11, 2019, 8:45 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Emergency
- Flash flood emergency
- Flood severity
- None
Counties Berks County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 113 km from the middle of the area, began a volume at 20:46 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, 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, 5:20 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, 5:20 PM EDT | FLASH FLOOD | Bally, PA | ROUTE 100 INTO BALLY IS IMPASSIBLE DUE TO FLOODING. |
| 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, 6:14 PM EDT | FLASH FLOOD | 1 Ese Douglass Twp, PA | WATER RESCUE REPORTED ON FARMINGTON AVE AT ENGLESVILLE 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, 7:30 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. |
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, 8.8 hours before the alert went out and 215 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.
107 WGUS51 KPHI 112045 FFWPHI PAC011-091-120045- /O.NEW.KPHI.FF.W.0046.190711T2045Z-190712T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Mount Holly NJ 445 PM EDT Thu Jul 11 2019 ...FLASH FLOOD EMERGENCY FOR SOUTHEASTERN BERKS AND NORTHWESTERN MONTGOMERY COUNTIES... 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... * Until 845 PM EDT. * At 441 PM EDT, emergency management reported heavy rain across the warned area. Up to six inches of rain have already fallen. Flash flooding is already occurring. Numerous vehicle and residential evacuations are occurring. THIS IS A FLASH FLOOD EMERGENCY FOR SOUTHEASTERN BERKS AND NORTHWESTERN MONTGOMERY COUNTIES. THIS IS A PARTICULARLY DANGEROUS SITUATION. SEEK HIGHER GROUND NOW! * Some locations that could experience flooding include... Birdsboro, Bally, Bechtelsville, Gilbertsville, Boyertown, Pennsburg, Red Hill, Amity Gardens and Halfway House. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to higher ground now. This is an extremely dangerous and life-threatening situation. Do not attempt to travel unless you are fleeing an area subject to flooding or under an evacuation order. && LAT...LON 4038 7549 4019 7581 4025 7587 4043 7554 $$ Kruzdlo
2 follow-up statements
949 WGUS71 KPHI 112203 FFSPHI Flash Flood Statement National Weather Service Mount Holly NJ 603 PM EDT Thu Jul 11 2019 PAC011-091-120045- /O.CON.KPHI.FF.W.0046.000000T0000Z-190712T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Berks PA-Montgomery PA- 603 PM EDT Thu Jul 11 2019 ...A FLASH FLOOD EMERGENCY REMAINS IN EFFECT THROUGH 845 PM... ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR SOUTHEASTERN BERKS AND NORTHWESTERN MONTGOMERY COUNTIES... At 555 PM EDT, emergency management reported flash flooding across portions of the warned area. Flash flooding is occurring now. Numerous homes are flooded in the Bally area. Numerous water rescues have been reported. Numerous roads and highways are flooded and closed including Route 100 and Route 422. THIS IS A FLASH FLOOD EMERGENCY FOR SOUTHEASTERN BERKS AND NORTHWESTERN MONTGOMERY COUNTIES. THIS IS A PARTICULARLY DANGEROUS SITUATION. SEEK HIGHER GROUND NOW! Some locations that could experience flooding include... Birdsboro, Bally, Bechtelsville, Gilbertsville, Boyertown, Pennsburg, Red Hill, Amity Gardens and Halfway House. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to higher ground now. This is an extremely dangerous and life-threatening situation. Do not attempt to travel unless you are fleeing an area subject to flooding or under an evacuation order. && LAT...LON 4038 7549 4019 7581 4025 7587 4043 7554 $$ Kruzdlo
902 WGUS71 KPHI 120043 FFSPHI Flash Flood Statement National Weather Service Mount Holly NJ 843 PM EDT Thu Jul 11 2019 PAC011-091-120047- /O.EXP.KPHI.FF.W.0046.000000T0000Z-190712T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Berks PA-Montgomery PA- 843 PM EDT Thu Jul 11 2019 ...THE FLASH FLOOD WARNING FOR SOUTHEASTERN BERKS AND NORTHWESTERN MONTGOMERY COUNTIES WILL EXPIRE AT 845 PM EDT... Although the FLASH FLOOD EMERGENCY for Southeastern Berks and Northwestern Montgomery counties will expire at 845 pm, a flash flood warning remains in place. Continue to listen to your local emergency officials if you are affected by flooding. LAT...LON 4038 7549 4019 7581 4025 7587 4043 7554 $$ Kruzdlo
The 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, 3:00 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Montgomery | 8 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, 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.