Alert archive / Pennsylvania / Areal Flood Advisories in 2017
Areal Flood Advisory 13, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Apr 6, 2017, 4:02 PM EDT for Cecil County, Kent County, Maryland; 7 counties in Pennsylvania. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 6, 2017, 4:02 PM EDT (20:02 UTC)
- Expired
- Apr 6, 2017, 10:00 PM EDT
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Cecil County, MD, Kent County, MD, Berks County, PA, Carbon County, PA, Chester County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 135 km from the middle of the area, began a volume at 20:02 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.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.0 hours before the alert went out and 202 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 550 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 243 m²/s²
- 0-3 km storm-relative helicity
- 459 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
096
WGUS81 KPHI 062002
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
402 PM EDT THU APR 6 2017
MDC015-029-PAC011-025-029-077-089-091-095-062300-
/O.NEW.KPHI.FA.Y.0013.170406T2002Z-170406T2300Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kent MD-Cecil MD-Berks PA-Montgomery PA-Lehigh PA-Carbon PA-
Chester PA-Monroe PA-Northampton PA-
402 PM EDT THU APR 6 2017
The National Weather Service in Mount Holly NJ has issued a
* Flood Advisory for Minor Flooding in Poor Drainage Areas for...
Northwestern Kent County in northeastern Maryland...
Cecil County in northeastern Maryland...
Berks County in eastern Pennsylvania...
Northwestern Montgomery County in southeastern Pennsylvania...
Lehigh County in eastern Pennsylvania...
Carbon County in northeastern Pennsylvania...
Chester County in southeastern Pennsylvania...
Monroe County in northeastern Pennsylvania...
Western Northampton County in eastern Pennsylvania...
* Until 700 PM EDT
* At 358 PM EDT...Doppler radar indicated moderate rain was still
falling across portions of the advised area. Up to two inches of
rain along with low lying and poor drainage flooding can be
expected into this evening.
* Some locations that will experience flooding include...
Allentown, Reading, Elkton, Lehighton, Mount Pocono, Calvert,
Bethlehem, Pottstown, Coatesville, Emmaus, Wyomissing, Northampton,
East Stroudsburg, Tobyhanna, Downingtown, Nazareth, Palmerton,
Birdsboro, Oxford and Kutztown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Advisory means river or stream flows are elevated...or
ponding of water in urban or other areas is occurring or is imminent.
&&
LAT...LON 4049 7643 4057 7602 4065 7598 4074 7576
4091 7599 4101 7573 4110 7575 4112 7564
4123 7554 4125 7513 4114 7512 3925 7601
3925 7623 3942 7600 3952 7598 3955 7608
3972 7623 3976 7606 4011 7594 4014 7588
$$
Kruzdlo3 follow-up statements
302
WGUS81 KPHI 062222
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
622 PM EDT THU APR 6 2017
MDC015-029-PAC029-062227-
/O.CAN.KPHI.FA.Y.0013.000000T0000Z-170406T2300Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kent MD-Cecil MD-Chester PA-
622 PM EDT THU APR 6 2017
...THE FLOOD ADVISORY FOR MINOR FLOODING IN POOR DRAINAGE AREAS HAS
BEEN CANCELLED FOR NORTHWESTERN KENT...CECIL AND CHESTER COUNTIES...
Thew moderate to heavy rain has ended. The flood advisory has been
cancelled.
LAT...LON 4049 7643 4057 7602 4065 7598 4074 7576
4091 7599 4101 7573 4110 7575 4112 7564
4123 7554 4125 7513 4115 7515 4114 7512
4042 7548 4019 7557 4024 7560 4022 7561
4024 7565 4024 7570 4014 7587
$$
PAC011-025-077-089-091-095-062300-
/O.CON.KPHI.FA.Y.0013.000000T0000Z-170406T2300Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-Montgomery PA-Lehigh PA-Carbon PA-Monroe PA-Northampton PA-
622 PM EDT THU APR 6 2017
...THE FLOOD ADVISORY REMAINS IN EFFECT UNTIL 700 PM EDT FOR BERKS...
NORTHWESTERN MONTGOMERY...LEHIGH...CARBON...MONROE AND WESTERN
NORTHAMPTON COUNTIES...
At 617 PM EDT, Doppler radar indicated light to moderate showers
across portions of the advised area. Although the heavy has ended,
it will take additional time for the runoff to subside. Portions of
the area have received over two inches of rain.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Advisory means river or stream flows are elevated, or ponding
of water in urban or other areas is occurring or is imminent.
&&
LAT...LON 4049 7643 4057 7602 4065 7598 4074 7576
4091 7599 4101 7573 4110 7575 4112 7564
4123 7554 4125 7513 4115 7515 4114 7512
4042 7548 4019 7557 4024 7560 4022 7561
4024 7565 4024 7570 4014 7587
$$
Kruzdlo424
WGUS81 KPHI 062240
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
640 PM EDT THU APR 6 2017
PAC011-025-077-089-091-095-070200-
/O.EXT.KPHI.FA.Y.0013.000000T0000Z-170407T0200Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-Montgomery PA-Lehigh PA-Carbon PA-Monroe PA-Northampton PA-
640 PM EDT THU APR 6 2017
The National Weather Service in Mount Holly NJ has extended the
* Flood Advisory for Minor Flooding in Poor Drainage Areas for...
Berks County in eastern Pennsylvania...
Northwestern Montgomery County in southeastern Pennsylvania...
Lehigh County in eastern Pennsylvania...
Carbon County in northeastern Pennsylvania...
Monroe County in northeastern Pennsylvania...
Western Northampton County in eastern Pennsylvania...
* Until 1000 PM EDT
* At 639 PM EDT...Doppler radar indicated light to moderate showers
across portions of the advised area. Although the heavy has ended,
it will take additional time for the runoff to subside. Portions
of the area have received over two inches of rain.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Flood Advisory means river or stream flows are elevated...or
ponding of water in urban or other areas is occurring or is imminent.
&&
LAT...LON 4049 7643 4057 7602 4065 7598 4074 7576
4091 7599 4101 7573 4110 7575 4112 7564
4123 7554 4125 7513 4115 7515 4114 7512
4042 7548 4019 7557 4024 7560 4022 7561
4024 7565 4024 7570 4014 7587
$$
Kruzdlo048
WGUS81 KPHI 070155
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
955 PM EDT THU APR 6 2017
PAC011-025-077-089-091-095-070204-
/O.EXP.KPHI.FA.Y.0013.000000T0000Z-170407T0200Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-Montgomery PA-Lehigh PA-Carbon PA-Monroe PA-Northampton PA-
955 PM EDT THU APR 6 2017
...THE FLOOD ADVISORY FOR MINOR FLOODING IN POOR DRAINAGE AREAS WILL
EXPIRE AT 1000 PM EDT FOR BERKS...NORTHWESTERN MONTGOMERY...LEHIGH...
CARBON...MONROE AND WESTERN NORTHAMPTON COUNTIES...
The heavy rain has ended. The flood advisory will be allowed to
expire.
LAT...LON 4049 7643 4057 7602 4065 7598 4074 7576
4091 7599 4101 7573 4110 7575 4112 7564
4123 7554 4125 7513 4115 7515 4114 7512
4042 7548 4019 7557 4024 7560 4022 7561
4024 7565 4024 7570 4014 7587
$$
KruzdloThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 11:58 AM EDT | Areal Flood Advisory | PHI | Cecil, Kent | 4 hr |
| Apr 6, 11:59 AM EDT | Special Weather Statement | PHI | Caroline | 31 min |
| Apr 6, 12:17 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 24 min |
| Apr 6, 1:00 PM EDT | Special Weather Statement | PHI | Caroline | 60 min |
| Apr 6, 1:08 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 40 min |
| Apr 6, 2:13 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's, Talbot | 47 min |
| Apr 6, 2:56 PM EDT | Special Weather Statement | PHI | Caroline, Cecil | 64 min |
| Apr 6, 4:41 PM EDT | Special Weather Statement | PHI | Talbot | 34 min |
| Apr 6, 2:07 PM EDT | Special Weather Statement | PHI | Bucks, Delaware, Montgomery, Philadelphia | 53 min |
| Apr 6, 2:29 PM EDT | Areal Flood Advisory | PHI | Bucks, Delaware, Montgomery, Philadelphia | 4 hr |
| Apr 6, 4:26 PM EDT | Areal Flood Advisory | PHI | Bucks, Lehigh, Monroe, Northampton | 4 hr |
Nearby
Areal Flood Advisories in Pennsylvania, 2017Areal Flood Advisories in Maryland, 2017Every areal flood advisory in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.