Alert archive / Pennsylvania / Areal Flood Warnings in 2018
Areal Flood Warning 39, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Jul 22, 2018, 8:18 PM EDT for Chester County, Pennsylvania; Cecil County, Maryland. It was in force for 117 min. 7 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 22, 2018, 8:18 PM EDT (00:18 UTC)
- Expired
- Jul 22, 2018, 10:15 PM EDT
- In force
- 117 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cecil County, MD, Chester County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 22, 8:20 PM EDT | FLASH FLOOD | West Marlborough Twp, PA | WATER RESCUES DUE TO MULTIPLE PEOPLE TRAPPED BY RAPIDLY RISING WATERS WITH ONE OCCUPIED VEHICLE PARTIALLY SUBMERGED. FIRE DEPARTMENT REPORTED EVERYONE RESCUED AND ACCOUNTED FOR. |
| Jul 22, 8:47 PM EDT | FLASH FLOOD | Upper Oxford Twp, PA | WATER RESCUE OF A PERSON IN A VEHICLE IN HIGH WATER. |
| Jul 22, 9:00 PM EDT | HEAVY RAIN 3.53 | West Grove, PA | |
| Jul 22, 9:00 PM EDT | HEAVY RAIN 3.67 | Fair Hill, MD | |
| Jul 22, 9:10 PM EDT | FLASH FLOOD | 1 Ene Coatesville, PA | OCCUPIED VEHICLE IN HIGH WATER AT FOUNDRY STREET AND 11TH AVENUE IN CALN TOWNSHIP. FIRE DEPARTMENT ON SCENE TO CONDUCT A WATER RESCUE. |
| Jul 22, 9:18 PM EDT | FLASH FLOOD | West Grove, PA | NUMEROUS ROADS ARE CLOSED DUE TO FLASH FLOODING IN WESTERN CHESTER COUNTY. THERE WERE 27 VEHICLE RESCUES SUCCESSFULLY CONDUCTED AND NO INJURIES WERE REPORTED. |
| Jul 22, 9:30 PM EDT | HEAVY RAIN 3.83 | Fair Hill, MD |
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, 0.3 hours before the alert went out and 160 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
- 1533 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 664 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 147 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 5.5
The text
As transmitted.
065
WGUS41 KPHI 230018
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
818 PM EDT SUN JUL 22 2018
MDC015-PAC029-230215-
/O.NEW.KPHI.FA.W.0039.180723T0018Z-180723T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cecil MD-Chester PA-
818 PM EDT SUN JUL 22 2018
The National Weather Service in Mount Holly NJ has issued a
* Flood Warning for...
Northeastern Cecil County in northeastern Maryland...
Southwestern Chester County in southeastern Pennsylvania...
* Until 1015 PM EDT.
* At 817 PM EDT, Doppler radar indicated showers and thunderstorms
producing heavy rain which will cause flooding. Up to one inch of
rain has already fallen in some areas, and this is on top of the 1
to 2 inches that fell earlier.
* Some locations that could experience flooding include...
Elkton, Calvert, Coatesville, Oxford, Parkesburg, North East, West
Grove, Charlestown, Homeville, Zion, Blake, Barksdale,
Cochranville, Fair Hill, Glen Westover, Bay View, Lombard, Andora,
Pleasant Hill and Cherry Hill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3985 7601 3987 7600 3987 7599 3992 7600
3994 7598 3995 7600 4002 7595 4001 7580
3957 7579 3957 7604
$$
Gorse2 follow-up statements
297
WGUS81 KPHI 230035
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
835 PM EDT SUN JUL 22 2018
MDC015-PAC029-230215-
/O.CON.KPHI.FA.W.0039.000000T0000Z-180723T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cecil MD-Chester PA-
835 PM EDT SUN JUL 22 2018
...A FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT FOR
NORTHEASTERN CECIL AND SOUTHWESTERN CHESTER COUNTIES...
At 833 PM EDT, Doppler radar indicated showers and thunderstorms
with very heavy rainfall moving across the warned area. Up to one
inch of rain has already fallen in some areas. In addition, Big Elk
Creek in Elk Mills located in Cecil County Maryland is above flood
stage.
Some locations that could experience flooding include...
Elkton, Calvert, Coatesville, Oxford, Parkesburg, North East, West
Grove, Charlestown, Homeville, Zion, Blake, Barksdale, Cochranville,
Fair Hill, Glen Westover, Bay View, Lombard, Andora, Pleasant Hill
and Cherry Hill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
A Flood Warning means that flooding is imminent or occurring. All
interested parties should take necessary precautions immediately.
&&
LAT...LON 3985 7601 3987 7600 3987 7599 3992 7600
3994 7598 3995 7600 4002 7595 4001 7580
3957 7579 3957 7604
$$
Gorse863 WGUS81 KPHI 230154 FLSPHI Flood Statement National Weather Service Mount Holly NJ 954 PM EDT SUN JUL 22 2018 PAC029-230202- /O.CAN.KPHI.FA.W.0039.000000T0000Z-180723T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Chester PA- 954 PM EDT SUN JUL 22 2018 ...THE FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHWESTERN CHESTER COUNTY... This area is under a flash flood warning. LAT...LON 3972 7602 3972 7579 3957 7579 3957 7604 $$ MDC015-230215- /O.CON.KPHI.FA.W.0039.000000T0000Z-180723T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Cecil MD- 954 PM EDT SUN JUL 22 2018 ...A FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT FOR NORTHEASTERN CECIL COUNTY... At 952 PM EDT, Doppler radar and automated rain gauges indicated that earlier showers and thunderstorms produced up to 4 inches of rain. This is resulting in flooding. The Big Elk Creek in Elk Mills remains above flood stage. Some locations that could experience flooding include... Elkton, Calvert, North East, Charlestown, Zion, Blake, Barksdale, Lombard, Andora, Pleasant Hill, Cherry Hill, Fair Hill, Glen Westover, Bay View and Appleton. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. A Flood Warning means that flooding is imminent or occurring. All interested parties should take necessary precautions immediately. && LAT...LON 3972 7602 3972 7579 3957 7579 3957 7604 $$ Gorse
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 8:43 PM EDT | Flash Flood Warning | PHI | Chester | 4 hr |
| Jul 22, 8:54 PM EDT | Flash Flood Warning | PHI | Berks, Chester | 4 hr |
| Jul 22, 9:40 PM EDT | Flash Flood Warning | PHI | Lehigh | 3 hr |
| Jul 22, 10:21 PM EDT | Special Weather Statement | PHI | Monroe | 54 min |
| Jul 22, 11:18 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe, Northampton | 3 hr |
| Jul 23, 12:19 AM EDT | River Flood Warning | PHI | Chester | 5 hr |
| Jul 23, 3:45 AM EDT | Flash Flood Watch | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 68 hr |
| Jul 23, 7:00 AM EDT | River Flood Warning | PHI | Chester, Delaware | 9 hr |
| Jul 23, 12:58 PM EDT | Special Weather Statement | PHI | Chester | 32 min |
| Jul 23, 1:01 PM EDT | Areal Flood Advisory | PHI | Chester | 34 min |
| Jul 22, 10:09 PM EDT | Areal Flood Warning | PHI | Cecil | 3 hr |
| Jul 23, 12:46 AM EDT | Areal Flood Warning | PHI | Cecil | 4 hr |
| Jul 23, 10:50 AM EDT | Areal Flood Advisory | PHI | Caroline | 110 min |
| Jul 23, 12:28 PM EDT | Special Weather Statement | PHI | Cecil | 32 min |
| Jul 23, 3:23 PM EDT | Coastal Flood Advisory | PHI | Kent, Queen Anne's, Talbot | 17 hr |
Nearby
Areal Flood Warnings in Pennsylvania, 2018Areal Flood Warnings in Maryland, 2018Every areal 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.