Alert archive / New Jersey / Flash Flood Warnings in 2015
Flash Flood Warning 4, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at May 31, 2015, 6:37 PM EDT for Middlesex County, New Jersey. It was in force for 5 hr. 5 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 31, 2015, 6:37 PM EDT (22:37 UTC)
- Expired
- May 31, 2015, 11:30 PM EDT
- In force
- 5 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Middlesex County, NJ
The radar
The Philadelphia radar (KDIX), 62 km from the middle of the area, began a volume at 22:39 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 31, 7:00 PM EDT | FLASH FLOOD | Sayreville, NJ | SEVERAL ROADS REPORTED TO BE FLOODED IN SAYREVILLE AND SURROUNDING AREAS. |
| May 31, 7:30 PM EDT | HEAVY RAIN 4.5 | South Amboy, NJ | 4.50 INCHES OF RAIN FELL IN 90 MINUTES. |
| May 31, 7:53 PM EDT | FLASH FLOOD | Old Bridge Twp, NJ | ROADWAYS FLOODED WITH SOME EVACUATIONS AND PROPERTY DAMAGE. |
| May 31, 7:53 PM EDT | HEAVY RAIN 4.97 | Old Bridge Twp, NJ | IN TWO HOURS |
| May 31, 7:55 PM EDT | FLASH FLOOD | South Amboy, NJ | FLOODING ON ROUTE 35 |
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 12:00Z, 10.6 hours before the alert went out and 131 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
- 106 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 746 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
492
WGUS51 KPHI 312237
FFWPHI
NJC023-010330-
/O.NEW.KPHI.FF.W.0004.150531T2237Z-150601T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
637 PM EDT SUN MAY 31 2015
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
* UNTIL 1130 PM EDT
* AT 636 PM EDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO
BEGIN SHORTLY. ADDITIONAL THUNDERSTORMS ARE MOVING OVER THE SAME
AREA OF THE COUNTY, ESPECIALLY THE EASTERN SIDE OF THE COUNTY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
NEW BRUNSWICK...PERTH AMBOY...SOMERSET...EDISON...OLD BRIDGE...EAST
BRUNSWICK...SAYREVILLE...NORTH BRUNSWICK...MIDDLESEX...BOUND
BROOK...MATAWAN...BROWNVILLE...SOCIETY HILL...NORTH BRUNSWICK
TOWNSHIP...COLONIA...WOODBRIDGE...SOUTH PLAINFIELD...SOUTH RIVER...
HIGHLAND PARK AND METUCHEN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4055 7425 4050 7426 4050 7428 4047 7427
4045 7423 4040 7425 4034 7434 4044 7451
4046 7451 4050 7446 4056 7453 4060 7447
4061 7434 4056 7422
$$2 follow-up statements
608
WGUS71 KPHI 312356
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
756 PM EDT SUN MAY 31 2015
NJC023-010330-
/O.CON.KPHI.FF.W.0004.000000T0000Z-150601T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MIDDLESEX NJ-
756 PM EDT SUN MAY 31 2015
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT FOR
MIDDLESEX COUNTY...
AT 753 PM EDT...TRAINED WEATHER SPOTTERS HAVE REPORTED FLASH
FLOODING IN CARTERET, OLD BRIDGE, PERTH AMBOY, AND SAYREVILLE. 4 TO
5 INCHES OF RAIN HAVE FALLEN. FLASH FLOODING IS ALREADY OCCURRING.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
NEW BRUNSWICK...PERTH AMBOY...SOMERSET...EDISON...OLD BRIDGE...EAST
BRUNSWICK...SAYREVILLE...NORTH BRUNSWICK...MIDDLESEX...BOUND BROOK...
MATAWAN...BROWNVILLE...SOCIETY HILL...NORTH BRUNSWICK TOWNSHIP...
COLONIA...WOODBRIDGE...SOUTH PLAINFIELD...SOUTH RIVER...HIGHLAND PARK
AND METUCHEN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4055 7425 4050 7426 4050 7428 4047 7427
4045 7423 4040 7425 4034 7434 4044 7451
4046 7451 4050 7446 4056 7453 4060 7447
4061 7434 4056 7422
$$
MEOLA227
WGUS71 KPHI 010232
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1032 PM EDT SUN MAY 31 2015
NJC023-010330-
/O.CON.KPHI.FF.W.0004.000000T0000Z-150601T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MIDDLESEX NJ-
1032 PM EDT SUN MAY 31 2015
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT FOR
NORTHEASTERN MIDDLESEX COUNTY...
AT 1029 PM EDT...THE HEAVIEST RAIN HAS OCCURRED AND RECESSIONS
SHOULD BE IN PROGRESS WHERE ROADS WERE CLOSED EARLIER. WHILE SHOWERS
AND ISOLATED THUNDERSTORMS WILL OCCUR INTERMITTENTLY OVERNIGHT, AT
THIS TIME THERE IS NO EXPECTATION FOR AN EXTENSION OF THIS WARNING.
SOME LOCATIONS THAT MAY STILL EXPERIENCE RESIDUAL FLOODING
INCLUDE... NEW BRUNSWICK...PERTH AMBOY...EDISON...EAST
BRUNSWICK...SAYREVILLE... MIDDLESEX...BOUND
BROOK...COLONIA...SOCIETY HILL...NORTH BRUNSWICK
TOWNSHIP...WOODBRIDGE...SOUTH PLAINFIELD...SOUTH RIVER...HIGHLAND
PARK...METUCHEN...DUNELLEN...SOUTH BOUND BROOK...FORDS...LAURENCE
HARBOR AND PORT READING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES AND ITS MORE DANGEROUS AT NIGHT TO DRIVE
INTO FLOODED ROADS.
&&
LAT...LON 4055 7425 4050 7426 4050 7428 4047 7427
4045 7423 4042 7427 4042 7431 4045 7436
4047 7443 4050 7446 4056 7453 4060 7447
4061 7434 4056 7422
$$
DRAGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 1:00 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 45 min |
| May 31, 1:11 PM EDT | Flash Flood Watch | PHI | Hunterdon, Middlesex, Morris, Somerset, Sussex, Warren | 13 hr |
| May 31, 1:24 PM EDT | Special Weather Statement | PHI | Monmouth | 36 min |
| May 31, 2:00 PM EDT | Special Weather Statement | PHI | Monmouth | 45 min |
| May 31, 4:33 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 42 min |
| May 31, 5:57 PM EDT | Small Craft Advisory | PHI | 6 hr | |
| May 31, 6:11 PM EDT | Areal Flood Advisory | PHI | Middlesex, Somerset | 3 hr |
| May 31, 6:50 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 40 min |
| May 31, 7:57 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 6 hr |
Nearby
Flash Flood Warnings in New Jersey, 2015Every flash flood warning in 2015
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; radar from the NEXRAD Level II archive.