Alert archive / Pennsylvania / Areal Flood Warnings in 2017
Areal Flood Warning 7, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Jun 24, 2017, 11:16 AM EDT for Philadelphia County, Pennsylvania. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 24, 2017, 11:16 AM EDT (15:16 UTC)
- Expired
- Jun 24, 2017, 2:15 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 55 km from the middle of the area, began a volume at 15:18 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, 3.3 hours before the alert went out and 239 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
- 1108 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
729 WGUS41 KPHI 241516 FLWPHI BULLETIN - IMMEDIATE BROADCAST REQUESTED Flood Warning National Weather Service Mount Holly NJ 1116 AM EDT SAT JUN 24 2017 PAC101-241815- /O.NEW.KPHI.FA.W.0007.170624T1516Z-170624T1815Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Philadelphia PA- 1116 AM EDT SAT JUN 24 2017 The National Weather Service in Mount Holly NJ has issued a * Flood Warning for... Northeastern Philadelphia County in southeastern Pennsylvania... * Until 215 PM EDT * At 1115 AM EDT, reporting gauges indicate flooding continues along Pennypack Creek due to heavy rain earlier this morning. An additional rise of a foot or so is possible before the creek crests early this afternoon. 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 4013 7501 4004 7499 4000 7507 4008 7508 $$ CMS
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 8:54 PM EDT | Areal Flood Advisory | PHI | Northampton | 3 hr |
| Jun 23, 9:23 PM EDT | Areal Flood Advisory | PHI | Berks, Lehigh, Northampton | 112 min |
| Jun 23, 11:42 PM EDT | Areal Flood Advisory | PHI | Chester | 4 hr |
| Jun 23, 11:58 PM EDT | Special Weather Statement | PHI | Philadelphia | 47 min |
| Jun 24, 3:25 AM EDT | Areal Flood Advisory | PHI | Bucks, Lehigh, Monroe, Montgomery, Northampton | 4 hr |
| Jun 24, 4:02 AM EDT | Areal Flood Advisory | PHI | Berks, Carbon, Lehigh, Montgomery | 4 hr |
| Jun 24, 5:22 AM EDT | Areal Flood Advisory | PHI | Chester, Montgomery | 4 hr |
| Jun 24, 7:09 AM EDT | Areal Flood Advisory | PHI | Bucks | 4 hr |
| Jun 24, 7:21 AM EDT | Flash Flood Warning | PHI | Bucks, Montgomery, Philadelphia | 4 hr |
| Jun 24, 2:10 PM EDT | Areal Flood Warning | PHI | Philadelphia | 110 min |
Nearby
Areal Flood Warnings in Pennsylvania, 2017Every areal flood warning 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.