Alert archive / Pennsylvania / Areal Flood Warnings in 2019
Areal Flood Warning 13, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at May 5, 2019, 7:20 AM EDT for Lehigh County, Northampton County, Pennsylvania. It was in force for 10 hr. 2 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
- May 5, 2019, 7:20 AM EDT (11:20 UTC)
- Expired
- May 5, 2019, 5:03 PM EDT
- In force
- 10 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lehigh County, PA, Northampton County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 5, 11:00 AM EDT | FLOOD | 1 Nnw Betlehem, PA | MONOCACY CREEK AT BETHLEHEM EXCEEDED ITS FLOOD STAGE OF 4.5 FEET AND CRESTED AT 5.5 FEET. FLOOD WATERS INUNDATED THE LOWEST LEVELS OF THE COLONIAL INDUSTRIAL CORNER IN BETHLEHEM. MAUCH CHUNK RD. ALSO FLOODED. |
| May 5, 2:00 PM EDT | HEAVY RAIN 2.18 | Lehigh Valley Internati, PA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 11.3 hours before the alert went out and 217 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
- 587 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -35 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
499 WGUS41 KPHI 051120 FLWPHI BULLETIN - IMMEDIATE BROADCAST REQUESTED Flood Warning National Weather Service Mount Holly NJ 720 AM EDT Sun May 5 2019 PAC077-095-051515- /O.NEW.KPHI.FA.W.0013.190505T1120Z-190505T1515Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Lehigh PA-Northampton PA- 720 AM EDT Sun May 5 2019 The National Weather Service in Mount Holly NJ has issued a * Flood Warning for... Northeastern Lehigh County in eastern Pennsylvania... Southwestern Northampton County in eastern Pennsylvania... * Until 1115 AM EDT. * At 713 AM EDT, the gauge on the Manocacy Creek in Bethlehem was approaching flood stage. This was due to locally heavy rain that fell overnight. With water levels still rising, flooding in Bethlehem is likely. PRECAUTIONARY/PREPAREDNESS ACTIONS... In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. A Flood Warning means that flooding is imminent or occurring. All interested parties should take necessary precautions immediately. && LAT...LON 4072 7532 4057 7536 4058 7559 4073 7553 $$ Kruzdlo
3 follow-up statements
307 WGUS41 KPHI 051511 FLWPHI BULLETIN - IMMEDIATE BROADCAST REQUESTED Flood Warning National Weather Service Mount Holly NJ 1111 AM EDT Sun May 5 2019 PAC077-095-051915- /O.EXT.KPHI.FA.W.0013.000000T0000Z-190505T1915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Lehigh PA-Northampton PA- 1111 AM EDT Sun May 5 2019 The National Weather Service in Mount Holly NJ has extended the * Flood Warning for... Northeastern Lehigh County in eastern Pennsylvania... Southwestern Northampton County in eastern Pennsylvania... * Until 315 PM EDT. * At 1108 AM EDT, the gauge on the Manocacy Creek in Bethlehem remained above flood stage. This was due to locally heavy rain that fell overnight. Water levels on the creek are beginning to subside, but are still expected to remain above flood stage into the afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. A Flood Warning means that flooding is imminent or occurring. All interested parties should take necessary precautions immediately. && LAT...LON 4072 7532 4057 7536 4058 7559 4073 7553 $$ Kruzdlo
469 WGUS41 KPHI 051901 FLWPHI BULLETIN - IMMEDIATE BROADCAST REQUESTED Flood Warning National Weather Service Mount Holly NJ 301 PM EDT Sun May 5 2019 PAC077-095-052215- /O.EXT.KPHI.FA.W.0013.000000T0000Z-190505T2215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Lehigh PA-Northampton PA- 301 PM EDT Sun May 5 2019 The National Weather Service in Mount Holly NJ has extended the * Flood Warning for... Northeastern Lehigh County in eastern Pennsylvania... Southwestern Northampton County in eastern Pennsylvania... * Until 615 PM EDT. * At 259 PM EDT, the gauge on the Manocacy Creek in Bethlehem remained above flood stage. Water levels on the creek should fall below flood stage over the next several hours. Renewed rises are possible this evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. A Flood Warning means that flooding is imminent or occurring. All interested parties should take necessary precautions immediately. && LAT...LON 4072 7532 4057 7536 4058 7559 4073 7553 $$ Kruzdlo
765 WGUS81 KPHI 052103 FLSPHI Flood Statement National Weather Service Mount Holly NJ 503 PM EDT Sun May 5 2019 PAC077-095-052110- /O.CAN.KPHI.FA.W.0013.000000T0000Z-190505T2215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Lehigh PA-Northampton PA- 503 PM EDT Sun May 5 2019 ...THE FLOOD WARNING HAS BEEN CANCELLED FOR NORTHEASTERN LEHIGH AND SOUTHWESTERN NORTHAMPTON COUNTIES... The Manocacy Creek in Bethlehem has dropped below flood stage, therefore the flood warning has been cancelled. Some additional rainfall however through this evening could result in renewed rises. LAT...LON 4072 7532 4057 7536 4058 7559 4073 7553 $$ Gorse
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 9:44 PM EDT | Areal Flood Advisory | PHI | Carbon, Lehigh, Monroe, Northampton | 4 hr |
| May 5, 1:46 AM EDT | Areal Flood Advisory | PHI | Bucks, Lehigh, Monroe, Northampton | 4 hr |
| May 5, 5:50 AM EDT | Coastal Flood Advisory | PHI | Bucks, Delaware, Philadelphia | 24 hr |
| May 5, 5:51 AM EDT | Areal Flood Advisory | PHI | Lehigh, Northampton | 4 hr |
Nearby
Areal Flood Warnings in Pennsylvania, 2019Every areal 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.