Alert archive / New Jersey / Flash Flood Warnings in 2011
Flash Flood Warning 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at May 18, 2011, 4:34 PM EDT for Morris County, Sussex County, Warren County, New Jersey. It was in force for 4 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 18, 2011, 4:34 PM EDT (20:34 UTC)
- Expired
- May 18, 2011, 8:30 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ
The radar
The Philadelphia radar (KDIX), 125 km from the middle of the area, began a volume at 20:35 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, 8.6 hours before the alert went out and 149 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
- 225 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 436 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 187 m²/s²
- 0-3 km storm-relative helicity
- 227 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
614
WGUS51 KPHI 182034
FFWPHI
NJC027-037-041-190030-
/O.NEW.KPHI.FF.W.0002.110518T2034Z-110519T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
434 PM EDT WED MAY 18 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
MORRIS COUNTY IN NORTHERN NEW JERSEY...
THIS INCLUDES THE CITY OF MORRISTOWN...
SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
THIS INCLUDES THE CITY OF NEWTON...
NORTHEASTERN WARREN COUNTY IN NORTHWEST NEW JERSEY...
* UNTIL 830 PM EDT
* AT 421 PM EDT...ONE TO ONE AND A HALF INCHES OF RAIN HAS FALLEN
THIS AFTERNOON ACROSS THE WARNED AREA. AN ADDITIONAL INCH OF
RAINFALL IS POSSIBLE FOR THE REST OF THE AFTERNOON AND THIS
EVENING.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HOPE...HIGH
POINT...HAINESVILLE...GREEN POND...FLATBROOKVILLE...FIVE POINTS...
WHARTON...VERNON VALLEY...SUSSEX...SUCCASUNNA...STANHOPE...
ROCKAWAY...RIVERDALE...PEQUANNOCK TOWNSHIP...PARSIPPANY...
OGDENSBURG...NETCONG...MOUNTAIN LAKES...MOUNT ARLINGTON...MORRIS
PLAINS...MENDHAM...MADISON...LONG VALLEY...LINCOLN PARK...LAKE
TELEMARK...LAKE MOHAWK...KINNELON...HOPATCONG...HIGHLAND LAKE...
HAMBURG...HACKETTSTOWN...GREAT MEADOWS-VIENNA...FRANKLIN...FLORHAM
PARK...EAST HANOVER...DOVER...CRANDON LAKES...CHESTER...CHATHAM...
BUTLER...BUDD LAKE...BRANCHVILLE...BOONTON...BLAIRSTOWN...ANDOVER
AND ALLAMUCHY-PANTHER VALLEY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
&&
LAT...LON 4120 7437 4109 7449 4104 7449 4105 7447
4097 7427 4089 7429 4089 7433 4086 7431
4073 7437 4080 7492 4101 7508 4107 7497
4108 7499 4110 7499 4115 7491 4127 7484
4134 7475 4135 7468
$$
KRUZDLO/ROBERTSONThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 4:00 AM EDT | Coastal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more | 25 hr |
| May 18, 12:39 PM EDT | Special Weather Statement | PHI | Atlantic, Ocean | 66 min |
| May 18, 1:01 PM EDT | Special Weather Statement | PHI | Mercer | 59 min |
| May 18, 2:14 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Middlesex, Somerset | 4 hr |
| May 18, 2:45 PM EDT | Areal Flood Advisory | PHI | Morris, Sussex, Warren | 6 hr |
| May 18, 4:12 PM EDT | River Flood Warning | PHI | Morris | 32 hr |
| May 18, 4:12 PM EDT | River Flood Warning | PHI | Morris | 72 hr |
| May 18, 4:13 PM EDT | River Flood Warning | PHI | Morris, Passaic | 36 hr |
Nearby
Flash Flood Warnings in New Jersey, 2011Every flash flood warning in 2011
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.