Alert archive / New Jersey / Areal Flood Warnings in 2012
Areal Flood Warning 9, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at May 29, 2012, 7:21 PM EDT for Sussex County, New Jersey. It was in force for 2 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
- May 29, 2012, 7:21 PM EDT (23:21 UTC)
- Expired
- May 29, 2012, 9:38 PM EDT
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Sussex County, NJ
The radar
The Philadelphia radar (KDIX), 139 km from the middle of the area, began a volume at 23:25 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
Brookhaven, NY (KOKX), launched 12:00Z, 11.4 hours before the alert went out and 156 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
- 1578 J/kg
- Mixed-layer CIN
- -112 J/kg
- Mixed-layer LCL
- 960 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -33 m²/s²
- 0-3 km storm-relative helicity
- -16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
194 WGUS41 KPHI 292321 FLWPHI BULLETIN - IMMEDIATE BROADCAST REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 721 PM EDT TUE MAY 29 2012 NJC037-300215- /O.NEW.KPHI.FA.W.0009.120529T2321Z-120530T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX NJ- 721 PM EDT TUE MAY 29 2012 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * FLOOD WARNING FOR... SUSSEX COUNTY IN NORTHWEST NEW JERSEY... * UNTIL 1015 PM EDT * AT 717 PM EDT RADAR ESTIMATES UP TO 1.75 INCHES OF RAIN HAS FALLEN BETWEEN HAINESVILLE AND SUSSEX. WHILE THE STRONGEST THUNDERSTORMS ARE PASSING THERE WILL BE ANOTHER BATCH OF MODERATE TO HEAVY RAIN DEVELOPING THIS EVENING WITH ISOLATED TOTALS OF 2.5 INCHES BY 10 PM. A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED. STREAM RISES WILL BE RAPID. ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS IMMEDIATELY. DONT DRIVE THROUGH WATER FROM ANY STREAMS THAT MAY HAVE EXCEEDED THEIR BANKS. LAT...LON 4126 7447 4097 7478 4108 7495 4135 7470 $$ DRAG
2 follow-up statements
203 WGUS81 KPHI 300039 FLSPHI FLOOD STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 839 PM EDT TUE MAY 29 2012 NJC037-300215- /O.CON.KPHI.FA.W.0009.000000T0000Z-120530T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX NJ- 839 PM EDT TUE MAY 29 2012 ...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT FOR SUSSEX COUNTY... AT 836 PM EDT, NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE HEAVIER RAINFALL RATES HAVE MOVED TO THE NORTHEAST, HOWEVER AN ADDITIONAL AREA OF MODERATE RAIN WILL MOVE ACROSS THE WARNED AREA THROUGH ABOUT 930 PM. THIS WILL ADD TO THE EXISTING RUNOFF AND POTENTIALLY ENHANCE ANY ONGOING FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED. STREAM RISES WILL BE QUICK. ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS IMMEDIATELY. && LAT...LON 4126 7447 4097 7478 4108 7495 4135 7470 $$ GORSE
361 WGUS81 KPHI 300138 FLSPHI FLOOD STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 938 PM EDT TUE MAY 29 2012 NJC037-300146- /O.CAN.KPHI.FA.W.0009.000000T0000Z-120530T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SUSSEX NJ- 938 PM EDT TUE MAY 29 2012 ...THE FLOOD WARNING HAS BEEN CANCELLED FOR SUSSEX COUNTY... THE AREA OF SHOWERS CONTINUES TO WEAKEN AS IT MOVES ACROSS THE COUNTY. THIS IS RESULTING IN MUCH REDUCED RAINFALL RATES, AND ANY LINGERING POOR DRAINAGE FLOODING SHOULD BE ENDING. BASED ON THIS, THE FLOOD WARNING HAS BEEN CANCELLED. LAT...LON 4126 7447 4097 7478 4108 7495 4135 7470 $$ GORSE
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 3:27 AM EDT | Small Craft Advisory | PHI | 21 hr | |
| May 29, 6:22 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 53 min |
| May 29, 6:32 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 66 min |
| May 29, 6:46 PM EDT | Special Weather Statement | PHI | Hunterdon, Mercer, Somerset | 89 min |
| May 29, 6:51 PM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 114 min |
| May 29, 6:52 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 53 min |
| May 29, 7:34 PM EDT | Special Weather Statement | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 2 more | 56 min |
Nearby
Areal Flood Warnings in New Jersey, 2012Every areal flood warning in 2012
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.