Alert archive / New Jersey / Flash Flood Warnings in 2016
Flash Flood Warning 26, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 30, 2016, 4:37 PM EDT for Middlesex County, New Jersey. It was in force for 6 hr. 4 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
- Jul 30, 2016, 4:37 PM EDT (20:37 UTC)
- Expired
- Jul 30, 2016, 10:30 PM EDT
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Middlesex County, NJ
The radar
The Philadelphia radar (KDIX), 46 km from the middle of the area, began a volume at 20:40 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 |
|---|---|---|---|
| Jul 30, 5:30 PM EDT | HEAVY RAIN 4.75 | 2 Ese Plainsboro, NJ | |
| Jul 30, 5:35 PM EDT | HEAVY RAIN 4.05 | Cranbury, NJ | |
| Jul 30, 7:10 PM EDT | HEAVY RAIN 5.41 | 2 E South Brunswick, NJ | 12 HOUR RAINFALL. |
| Jul 30, 7:45 PM EDT | HEAVY RAIN 2.53 | Middlebush, NJ | 12 HOUR RAINFALL. |
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, 8.6 hours before the alert went out and 150 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
- 176 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 858 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 7 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
415
WGUS51 KPHI 302037
FFWPHI
NJC023-310030-
/O.NEW.KPHI.FF.W.0026.160730T2037Z-160731T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
437 PM EDT SAT JUL 30 2016
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
* UNTIL 830 PM EDT
* AT 436 PM EDT...DOPPLER RADAR INDICATED A CLUSTER OF THUNDERSTORMS
PRODUCING HEAVY RAIN ACROSS PORTIONS OF THE WARNED AREA. UP TO TWO
INCHES OF RAIN HAVE ALREADY FALLEN. UP TO FOUR INCHES IS POSSIBLE.
BECAUSE THIS AMOUNT OF RAIN WILL FALL IN A SHORT PERIOD OF TIME,
FLASH FLOODING IS LIKELY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
EAST BRUNSWICK...NORTH BRUNSWICK...JAMESBURG...CRANBURY...DAYTON...
NORTH BRUNSWICK TOWNSHIP...CLEARBROOK PARK...PRINCETON MEADOWS...
WHITTINGHAM...SOUTH RIVER...MILLTOWN...HELMETTA...
ROSSMOOR AND MONMOUTH JUNCTION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
DRIVING INTO FLOOD WATERS COULD PUT YOUR LIFE AT RISK AND COST YOU
THOUSANDS OF DOLLARS IN VEHICLE REPAIRS. FLOOD WATERS MAY BE DEEPER
THAT YOU THINK. TURN AROUND AND FIND AN ALTERNATE ROUTE.
&&
LAT...LON 4030 7447 4030 7457 4031 7458 4031 7459
4047 7449 4047 7437
$$
KRUZDLO3 follow-up statements
061
WGUS71 KPHI 302151
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
551 PM EDT SAT JUL 30 2016
NJC023-310030-
/O.CON.KPHI.FF.W.0026.000000T0000Z-160731T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MIDDLESEX NJ-
551 PM EDT SAT JUL 30 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM EDT FOR
SOUTHWESTERN MIDDLESEX COUNTY...
AT 548 PM EDT...IT WAS STILL RAINING ACROSS THE WARNED AREA. THE
HEAVIEST RAIN WAS FALLING BETWEEN HELMETTA AND JAMESBURG. CREEKS ARE
RUNNING HIGH AND ROADS HAVE BEEN CLOSED. UP TO FIVE INCHES OF RAIN
HAVE FALLEN THE LAST FEW HOURS. THE WORST FLOODING HAS BEEN BETWEEN
MONMOUTH JUNCTION AND CRANBURY. THIS IS A DANGEROUS SITUATION. DO
NOT GO AROUND ROAD BARRIERS. MOVE TO HIGHER GROUND IF NEEDED.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
EAST BRUNSWICK...NORTH BRUNSWICK...JAMESBURG...CRANBURY...DAYTON...
NORTH BRUNSWICK TOWNSHIP...CLEARBROOK PARK...PRINCETON MEADOWS...
WHITTINGHAM...SOUTH RIVER...MILLTOWN...HELMETTA...
ROSSMOOR AND MONMOUTH JUNCTION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DRIVING INTO FLOOD WATERS COULD PUT YOUR LIFE AT RISK AND COST YOU
THOUSANDS OF DOLLARS IN VEHICLE REPAIRS. FLOOD WATERS MAY BE DEEPER
THAT YOU THINK. TURN AROUND AND FIND AN ALTERNATE ROUTE.
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4030 7447 4030 7457 4031 7458 4031 7459
4047 7449 4047 7437
$$
KRUZDLO411
WGUS51 KPHI 310004
FFWPHI
NJC023-310230-
/O.EXT.KPHI.FF.W.0026.000000T0000Z-160731T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
804 PM EDT SAT JUL 30 2016
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
* UNTIL 1030 PM EDT
* AT 800 PM EDT...RAIN WAS STILL FALLING ACROSS THE WARNED AREA
ALTHOUGH RAIN RATES HAVE IMPROVED AND ARE NOW LESS THAN AN INCH
PER HOUR. CREEKS CONTINUE TO RUN HIGH, ROADS HAVE BEEN CLOSED, AND
WATER RESCUES HAVE BEEN CONDUCTED. UP TO SIX INCHES OF RAIN HAVE
FALLEN SINCE 300 PM. THE WORST FLOODING HAS BEEN BETWEEN MONMOUTH
JUNCTION AND CRANBURY. UNTIL THE WATER HAS SUBSIDED, THIS REMAINS
A DANGEROUS SITUATION. DO NOT GO AROUND ROAD BARRIERS. MOVE TO
HIGHER GROUND. THE WEST WINDSOR POLICE DEPARTMENT HAS DECLARED A
STATE OF EMERGENCY FOR WEST WINDSOR TOWNSHIP.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
EAST BRUNSWICK...NORTH BRUNSWICK...JAMESBURG...CRANBURY...DAYTON...
NORTH BRUNSWICK TOWNSHIP...CLEARBROOK PARK...PRINCETON MEADOWS...
WHITTINGHAM...SOUTH RIVER...MILLTOWN...HELMETTA...
ROSSMOOR AND MONMOUTH JUNCTION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST
FLOOD DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4030 7447 4030 7457 4031 7458 4031 7459
4047 7449 4047 7437
$$
KRUZDLO956
WGUS71 KPHI 310226
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1026 PM EDT SAT JUL 30 2016
NJC023-310236-
/O.EXP.KPHI.FF.W.0026.000000T0000Z-160731T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MIDDLESEX NJ-
1026 PM EDT SAT JUL 30 2016
...THE FLASH FLOOD WARNING FOR SOUTHWESTERN MIDDLESEX COUNTY WILL
EXPIRE AT 1030 PM EDT...
WATER IS NO LONGER RISING RAPIDLY. THE FLASH FLOOD WARNING HAS BEEN
REPLACED BY A FLOOD WARNING WHICH IS IN EFFECT UNTIL 215 AM.
LAT...LON 4030 7447 4030 7457 4031 7458 4031 7459
4047 7449 4047 7437
$$
KRUZDLOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 1:55 PM EDT | Special Weather Statement | PHI | Hunterdon | 50 min |
| Jul 30, 2:34 PM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth | 4 hr |
| Jul 30, 2:40 PM EDT | Special Weather Statement | PHI | Morris | 35 min |
| Jul 30, 2:59 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Warren | 4 hr |
| Jul 30, 3:03 PM EDT | Severe Thunderstorm Warning | PHI | Morris | 47 min |
| Jul 30, 3:06 PM EDT | Areal Flood Advisory | PHI | Mercer, Middlesex, Somerset | 4 hr |
| Jul 30, 3:34 PM EDT | Areal Flood Advisory | PHI | Mercer, Middlesex | 4 hr |
| Jul 30, 3:45 PM EDT | Areal Flood Advisory | PHI | Morris, Sussex | 4 hr |
| Jul 30, 3:49 PM EDT | Special Weather Statement | PHI | Mercer, Middlesex | 26 min |
| Jul 30, 3:58 PM EDT | Flash Flood Warning | PHI | Mercer, Middlesex, Somerset | 7 hr |
| Jul 30, 6:26 PM EDT | Flash Flood Warning | PHI | Mercer | 4 hr |
Nearby
Flash Flood Warnings in New Jersey, 2016Every flash flood warning in 2016
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.