Alert archive / Pennsylvania / Flash Flood Warnings in 2020
Flash Flood Warning 15, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 8, 2020, 3:57 PM EDT for Berks County, Pennsylvania. It was in force for 3 hr. 5 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 8, 2020, 3:57 PM EDT (19:57 UTC)
- Expired
- Jul 8, 2020, 7:00 PM 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), 132 km from the middle of the area, began a volume at 20:01 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 8, 4:55 PM EDT | FLOOD | 1 S Muhlenberg Twp, PA | FLOODING ON STATE HIGHWAY 12 NEAR POTTSVILLE PIKE. TRAFFIC CONTROL REQUIRED. TIME BASED ON DISPATCH REPORT. |
| Jul 8, 4:55 PM EDT | FLASH FLOOD | 1 S Muhlenberg Twp, PA | UPDATES PREVIOUS FLOOD REPORT FROM 1 S MUHLENBERG TWP. STATE HIGHWAY 12 CLOSED FROM FLASH FLOODING BETWEEN CENTRE AVENUE AND 5TH STREET. TIME BASED ON DISPATCH REPORT. |
| Jul 8, 4:55 PM EDT | FLASH FLOOD | 1 Wnw Reading, PA | SEVERAL REPORTS OF FLOODING NEAR FIFTH STREET. TRAFFIC CONTROL REQUIRED. TIME BASED ON DISPATCH REPORTS. |
| Jul 8, 5:00 PM EDT | HEAVY RAIN 2.29 | 2 Sw Muhlenberg Twp, PA | ASOS STATION KRDG READING 2-HOUR TOTAL ENDING AT 5 PM. |
| Jul 8, 5:02 PM EDT | FLASH FLOOD | 1 Se Muhlenberg Twp, PA | STATE HIGHWAY 12 CLOSED FROM FLASH FLOODING BETWEEN THE FIFTH STREET AND RIVER ROAD EXITS. TIME BASED ON DISPATCH REPORTS. |
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, 8.0 hours before the alert went out and 208 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
- 394 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 926 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
170
WGUS51 KPHI 081957
FFWPHI
PAC011-090000-
/O.NEW.KPHI.FF.W.0015.200708T1957Z-200709T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
357 PM EDT Wed Jul 8 2020
The National Weather Service in Mount Holly NJ has issued a
* Flash Flood Warning for...
Central Berks County in eastern Pennsylvania...
* Until 800 PM EDT.
* At 356 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. 2-3 inches of rain have fallen.
Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that could experience flooding include...
Reading, Wyomissing, Fleetwood, Laureldale, Leesport, Lyons,
Fairview Hgts, Spring Ridge, West Reading, Mount Penn, St.
Lawrence, Wyomissing Hills, Reiffton and Whitfield.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4048 7573 4038 7568 4028 7572 4031 7586
4033 7591 4033 7598 4038 7608 4048 7595
4049 7583
FLASH FLOOD...RADAR INDICATED
$$
NC2 follow-up statements
355
WGUS71 KPHI 082123
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
523 PM EDT Wed Jul 8 2020
PAC011-090000-
/O.CON.KPHI.FF.W.0015.000000T0000Z-200709T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-
523 PM EDT Wed Jul 8 2020
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR
CENTRAL BERKS COUNTY...
Around 5 PM EDT, the department of highways reported several
instances of roadway flooding in the Reading area. Up to three
inches of rain have already fallen in portions of the warned area,
and Flash flooding is already occurring.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Law enforcement.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other drainage
and low lying areas.
Some locations that could experience flooding include...
Reading, Wyomissing, Fleetwood, Laureldale, Leesport, Lyons, Fairview
Hgts, Spring Ridge, West Reading, Mount Penn, St. Lawrence,
Wyomissing Hills, Reiffton and Whitfield.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4048 7573 4038 7568 4028 7572 4031 7586
4033 7591 4033 7598 4038 7608 4048 7595
4049 7583
FLASH FLOOD...OBSERVED
$$
NC391
WGUS71 KPHI 082300
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
700 PM EDT Wed Jul 8 2020
PAC011-082309-
/O.CAN.KPHI.FF.W.0015.000000T0000Z-200709T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-
700 PM EDT Wed Jul 8 2020
...THE FLASH FLOOD WARNING FOR CENTRAL BERKS COUNTY IS CANCELLED...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.
LAT...LON 4048 7573 4038 7568 4028 7572 4031 7586
4033 7591 4033 7598 4038 7608 4048 7595
4049 7583
$$
NCThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 11:26 AM EDT | Special Weather Statement | PHI | Carbon, Monroe | 49 min |
| Jul 8, 12:13 PM EDT | Flash Flood Watch | PHI | Berks, Bucks, Carbon, Lehigh, Monroe, Montgomery and 1 more | 6 hr |
| Jul 8, 12:29 PM EDT | Special Weather Statement | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 61 min |
| Jul 8, 2:13 PM EDT | Areal Flood Advisory | PHI | Berks | 4 hr |
| Jul 8, 2:54 PM EDT | Special Weather Statement | PHI | Berks | 51 min |
| Jul 8, 3:25 PM EDT | Areal Flood Advisory | PHI | Berks | 4 hr |
| Jul 8, 3:45 PM EDT | Special Weather Statement | PHI | Berks | 45 min |
Nearby
Flash Flood Warnings in Pennsylvania, 2020Every flash flood warning in 2020
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.