Alert archive / New Jersey / Flash Flood Warnings in 2018
Flash Flood Warning 5, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at May 27, 2018, 5:43 AM EDT for Monmouth County, New Jersey. It was in force for 4 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
- May 27, 2018, 5:43 AM EDT (09:43 UTC)
- Expired
- May 27, 2018, 9:45 AM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Monmouth County, NJ
The radar
The Philadelphia radar (KDIX), 47 km from the middle of the area, began a volume at 09:43 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 27, 7:00 AM EDT | FLOOD | Freehold, NJ | FLOODING ON NJ 33 BETWEEN US 9 AND CR 537/W. MAIN ST. ONE LANE MAY BE BLOCKED. TIME ESTIMATED FROM RADAR. |
| May 27, 7:00 AM EDT | FLOOD | Freehold, NJ | FLOODING ON NJ 79 IN BOTH DIRECTIONS NEAR CR 537/MAIN ST. ALL LANES CLOSED. TIME ESTIMATED FROM RADAR. |
| May 27, 7:00 AM EDT | FLASH FLOOD | Freehold, NJ | FLOODING ON NJ 79 IN BOTH DIRECTIONS NEAR CR 537/MAIN ST. ALL LANES CLOSED. TIME ESTIMATED FROM RADAR. |
| May 27, 8:20 AM EDT | HEAVY RAIN 2.37 | Howell, NJ | 2.37 IN SOUTH HOWELL, NJ |
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 00:00Z, 9.7 hours before the alert went out and 123 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
- 861 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 1209 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted.
550
WGUS51 KPHI 270943
FFWPHI
NJC025-271345-
/O.NEW.KPHI.FF.W.0005.180527T0943Z-180527T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
543 AM EDT SUN MAY 27 2018
The National Weather Service in Mount Holly NJ has issued a
* Flash Flood Warning for...
Northeastern Monmouth County in central New Jersey...
* Until 945 AM EDT.
* At 541 AM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Up to
three inches of rain have already fallen in the past two hours.
Additionally, locally heavy rain of two to three inches fell in
the Tinton Falls area yesterday evening. Flash flooding is
expected to begin shortly in the areas of heaviest rain.
* Some locations that could experience flooding include...
Long Branch, Middletown, Howell, Marlboro, Tinton Falls, Holmdel,
Red Bank, Matawan, Highlands, Farmingdale, East Freehold,
Robertsville, West Freehold, Adelphia, Yorketown, Elberon,
Navesink, Collingwood Park, Lincroft and Morganville.
Additional rainfall amounts of one to two inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report flooding to your local law enforcement agency when you
can do so safely.
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 4039 7394 4032 7397 4024 7399 4023 7412
4017 7419 4023 7437 4028 7440 4039 7427
4042 7405
$$
JRK1 follow-up statement
319
WGUS71 KPHI 271125
FFSPHI
Flash Flood Statement
National Weather Service Mount Holly NJ
725 AM EDT SUN MAY 27 2018
NJC025-271345-
/O.CON.KPHI.FF.W.0005.000000T0000Z-180527T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Monmouth NJ-
725 AM EDT SUN MAY 27 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 AM EDT FOR
NORTHEASTERN MONMOUTH COUNTY...
At 722 AM EDT, Doppler radar and automated rain gauges indicated
thunderstorms had produced heavy rain over the warned area overnight
and early this morning. Two to four inches of rain have already
fallen. Numerous road closures due to flooding have been reported in
the Freehold and Tinton Falls area. Area creeks and streams continue
to rise sharply in response to the excess runoff. Flash flooding may
be occurring or beginning shortly.
Some locations that could experience flooding include...
Long Branch, Middletown, Howell, Marlboro, Tinton Falls, Holmdel, Red
Bank, Matawan, Highlands, Farmingdale, East Freehold, Robertsville,
West Freehold, Adelphia, Yorketown, Elberon, Navesink, Collingwood
Park, Lincroft and Morganville.
Additional rainfall amounts of up to three-quarters inch are
possible in the warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 4039 7394 4032 7397 4024 7399 4023 7412
4017 7419 4023 7437 4028 7440 4039 7427
4042 7405
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 11:38 PM EDT | Flash Flood Watch | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 9 more | 23 hr |
| May 27, 1:27 AM EDT | Special Marine Warning | PHI | 2 hr | |
| May 27, 1:46 AM EDT | Special Marine Warning | PHI | 89 min | |
| May 27, 1:58 AM EDT | Areal Flood Advisory | PHI | Monmouth | 4 hr |
| May 27, 2:13 AM EDT | Areal Flood Advisory | PHI | Morris, Warren | 4 hr |
| May 27, 4:13 AM EDT | Areal Flood Advisory | PHI | Middlesex, Somerset | 4 hr |
| May 27, 4:28 AM EDT | Flash Flood Warning | PHI | Monmouth | 4 hr |
| May 27, 4:39 AM EDT | Flash Flood Warning | PHI | Middlesex, Somerset | 4 hr |
| May 27, 5:27 AM EDT | Areal Flood Advisory | PHI | Hunterdon | 4 hr |
| May 27, 5:35 AM EDT | Areal Flood Advisory | PHI | Mercer, Middlesex, Monmouth | 4 hr |
| May 27, 6:12 AM EDT | Flash Flood Warning | PHI | Mercer, Middlesex, Somerset | 4 hr |
| May 27, 6:33 AM EDT | Flash Flood Warning | PHI | Hunterdon | 4 hr |
| May 27, 7:30 AM EDT | Flash Flood Warning | PHI | Mercer | 4 hr |
| May 27, 8:25 AM EDT | Areal Flood Warning | PHI | Monmouth | 7 hr |
| May 27, 8:40 AM EDT | Areal Flood Warning | PHI | Middlesex, Somerset | 4 hr |
| May 27, 9:05 AM EDT | River Flood Warning | PHI | Mercer | 13 hr |
| May 27, 9:17 AM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Mercer, Monmouth, Ocean | 3 hr |
| May 27, 10:02 AM EDT | Areal Flood Warning | PHI | Monmouth | 6 hr |
| May 27, 10:19 AM EDT | Areal Flood Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 8 hr |
| May 27, 10:27 AM EDT | Areal Flood Warning | PHI | Hunterdon | 8 hr |
| May 27, 11:18 AM EDT | Areal Flood Warning | PHI | Mercer | 7 hr |
| May 27, 3:10 PM EDT | River Flood Warning | PHI | Somerset | 46 hr |
| May 27, 3:22 PM EDT | Coastal Flood Advisory | PHI | Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 2 more | 12 hr |
| May 27, 3:44 PM EDT | Areal Flood Warning | PHI | Monmouth | 16 hr |
| May 27, 6:07 PM EDT | Areal Flood Warning | PHI | Mercer, Middlesex, Somerset | 4 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.