Alert archive / New Jersey / Flash Flood Warnings in 2018
Flash Flood Warning 70, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 12, 2018, 6:32 PM EDT for Cumberland County, Salem County, New Jersey. It was in force for 112 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 12, 2018, 6:32 PM EDT (22:32 UTC)
- Expired
- Aug 12, 2018, 8:24 PM EDT
- In force
- 112 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cumberland County, NJ, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 78 km from the middle of the area, began a volume at 22:32 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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.5 hours before the alert went out and 174 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
- 487 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 822 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
034 WGUS51 KPHI 122232 FFWPHI NJC011-033-130230- /O.NEW.KPHI.FF.W.0070.180812T2232Z-180813T0230Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Mount Holly NJ 632 PM EDT SUN AUG 12 2018 The National Weather Service in Mount Holly NJ has issued a * Flash Flood Warning for... Central Cumberland County in southern New Jersey... East central Salem County in southern New Jersey... * Until 1030 PM EDT. * At 630 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Over two inches of rain has fallen in between Rosenhayn and Millville during the past hour, and more rain is possible into the evening hours. Flash flooding is expected to begin shortly in the areas of heaviest rain. * Some locations that could experience flooding include... Vineland, Millville, Bridgeton, Laurel Lake, Elmer, Fairton, Olivet, Seabrook Farms, South Vineland, Rosenhayn and Centerton. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles. A Flash Flood Warning means that flooding is imminent or occurring. If you are in the warned area move to higher ground immediately. Residents living along streams and creeks should take immediate precautions to protect life and property. && LAT...LON 3962 7513 3943 7488 3928 7508 3944 7535 $$ jjm
1 follow-up statement
303 WGUS71 KPHI 130024 FFSPHI Flash Flood Statement National Weather Service Mount Holly NJ 824 PM EDT SUN AUG 12 2018 NJC011-033-130034- /O.CAN.KPHI.FF.W.0070.000000T0000Z-180813T0230Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Cumberland NJ-Salem NJ- 824 PM EDT SUN AUG 12 2018 ...THE FLASH FLOOD WARNING FOR CENTRAL CUMBERLAND AND EAST CENTRAL SALEM COUNTIES IS CANCELLED... The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. LAT...LON 3962 7513 3943 7488 3928 7508 3944 7535 $$ jjm
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 8:02 PM EDT | Special Marine Warning | PHI | 58 min | |
| Aug 11, 8:48 PM EDT | Areal Flood Advisory | PHI | Atlantic, Cape May | 3 hr |
| Aug 11, 8:57 PM EDT | Special Marine Warning | PHI | 63 min | |
| Aug 11, 9:08 PM EDT | Special Marine Warning | PHI | 67 min | |
| Aug 11, 9:11 PM EDT | Areal Flood Advisory | PHI | Cumberland, Salem | 81 min |
| Aug 11, 9:30 PM EDT | Areal Flood Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 88 min |
| Aug 11, 9:57 PM EDT | Special Marine Warning | PHI | 63 min | |
| Aug 11, 10:28 PM EDT | Areal Flood Warning | PHI | Warren | 4 hr |
| Aug 11, 11:04 PM EDT | Special Marine Warning | PHI | 56 min | |
| Aug 11, 11:58 PM EDT | Special Marine Warning | PHI | 37 min | |
| Aug 12, 5:28 AM EDT | Coastal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more | 24 hr |
| Aug 12, 6:17 PM EDT | Areal Flood Advisory | PHI | Cumberland, Salem | 118 min |
| Aug 12, 7:53 PM EDT | Special Marine Warning | PHI | 32 min |
Nearby
Flash Flood Warnings in New Jersey, 2018Every flash 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.