Alert archive / New Jersey / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 172, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 18, 2017, 7:00 PM EDT for 5 counties in New Jersey. It was in force for 60 min. 1 report 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
- Aug 18, 2017, 7:00 PM EDT (23:00 UTC)
- Expired
- Aug 18, 2017, 8:00 PM EDT
- In force
- 60 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Burlington County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ
The radar
The Philadelphia radar (KDIX), 57 km from the middle of the area, began a volume at 23:03 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 |
|---|---|---|---|
| Aug 18, 7:33 PM EDT | TSTM WND DMG | Wyckoff Mills, NJ | DOWNED TREE ON POWER LINES ON FORT PLAINS ROAD |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 18, 2:27 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 11.0 hours before the alert went out and 120 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1073 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 147 m²/s²
- 0-3 km storm-relative helicity
- 215 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted.
288
WUUS51 KPHI 182300
SVRPHI
NJC005-021-023-025-029-190000-
/O.NEW.KPHI.SV.W.0172.170818T2300Z-170819T0000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
700 PM EDT FRI AUG 18 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northern Ocean County in southern New Jersey...
Southeastern Mercer County in central New Jersey...
Northeastern Burlington County in southern New Jersey...
Monmouth County in central New Jersey...
Central Middlesex County in northern New Jersey...
* Until 800 PM EDT
* At 700 PM EDT, severe thunderstorms were located along a line
extending from Tottenville to near Georgetown, moving northeast at
30 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Toms River, New Brunswick, Perth Amboy, Long Branch, Asbury Park,
Sandy Hook, Edison, Lakewood, Middletown, Old Bridge, Jackson,
Howell, East Brunswick, Sayreville, Marlboro, Manalapan, Carteret,
Tinton Falls, Holmdel and Red Bank.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4029 7397 4007 7402 4000 7471 4060 7434
4059 7420 4056 7421 4055 7425 4050 7426
4050 7428 4046 7426 4044 7420 4046 7418
4045 7413 4041 7399 4048 7402 4047 7399
4043 7397
TIME...MOT...LOC 2300Z 244DEG 26KT 4053 7424 4010 7459
HAIL...0.75IN
WIND...60MPH
$$
SFJ2 follow-up statements
767
WWUS51 KPHI 182322
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
722 PM EDT FRI AUG 18 2017
NJC005-021-023-025-029-190000-
/O.CON.KPHI.SV.W.0172.000000T0000Z-170819T0000Z/
Ocean NJ-Mercer NJ-Burlington NJ-Monmouth NJ-Middlesex NJ-
722 PM EDT FRI AUG 18 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHERN OCEAN...SOUTHEASTERN MERCER...NORTHEASTERN BURLINGTON...
MONMOUTH AND SOUTHEASTERN MIDDLESEX COUNTIES...
At 719 PM EDT, severe thunderstorms were located along a line
extending from near Keansburg to Woodruff, moving east at 25 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated. At 715 PM an weather station at Perth
Amboy reported winds near 50 mph. Additionally, public
reported trees and wires down across portions of Middlesex
County when the storm went through there earlier.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Toms River, Long Branch, Asbury Park, Sandy Hook, Lakewood,
Middletown, Old Bridge, Jackson, Howell, Marlboro, Manalapan, Tinton
Falls, Holmdel, Red Bank, Matawan, Manasquan, Highlands, Point
Pleasant Beach, Allentown and Farmingdale.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4007 7402 4000 7471 4020 7459 4046 7426
4044 7420 4046 7418 4041 7399 4044 7399
4048 7402 4047 7399 4043 7397 4029 7397
TIME...MOT...LOC 2319Z 267DEG 21KT 4050 7412 4007 7447
HAIL...0.75IN
WIND...60MPH
$$
SFJ283
WWUS51 KPHI 182355
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
755 PM EDT FRI AUG 18 2017
NJC005-021-023-025-029-190004-
/O.EXP.KPHI.SV.W.0172.000000T0000Z-170819T0000Z/
Ocean NJ-Mercer NJ-Burlington NJ-Monmouth NJ-Middlesex NJ-
755 PM EDT FRI AUG 18 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN OCEAN...SOUTHEASTERN
MERCER...NORTHEASTERN BURLINGTON...MONMOUTH AND SOUTHEASTERN
MIDDLESEX COUNTIES WILL EXPIRE AT 800 PM EDT...
The storms which prompted the warning have moved out of the area.
Therefore the warning will be allowed to expire. However heavy rain
is still possible with thunderstorms trailing behind the main line.
A severe thunderstorm watch remains in effect until 900 PM EDT for
southern and central New Jersey.
LAT...LON 4007 7402 4000 7471 4020 7459 4046 7426
4044 7420 4046 7418 4041 7399 4044 7399
4048 7402 4047 7399 4043 7397 4029 7397
TIME...MOT...LOC 2354Z 244DEG 26KT 4061 7383 4018 7418
$$
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 3:39 AM EDT | Flash Flood Watch | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 18 hr |
| Aug 18, 3:41 AM EDT | Small Craft Advisory | PHI | 18 hr | |
| Aug 18, 10:51 AM EDT | Special Weather Statement | PHI | Ocean | 54 min |
| Aug 18, 11:19 AM EDT | Areal Flood Advisory | PHI | Burlington, Ocean | 116 min |
| Aug 18, 11:28 AM EDT | Special Weather Statement | PHI | Ocean | 47 min |
| Aug 18, 5:08 PM EDT | Special Weather Statement | PHI | Hunterdon, Warren | 37 min |
| Aug 18, 5:11 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Somerset | 49 min |
| Aug 18, 5:20 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Mercer, Salem | 3 hr |
| Aug 18, 5:39 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Salem | 66 min |
| Aug 18, 5:42 PM EDT | Special Weather Statement | PHI | Hunterdon | 33 min |
| Aug 18, 5:46 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset | 44 min |
| Aug 18, 5:50 PM EDT | Special Marine Warning | PHI | 55 min | |
| Aug 18, 5:54 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth | 66 min |
| Aug 18, 6:13 PM EDT | Special Weather Statement | PHI | Middlesex, Somerset | 32 min |
| Aug 18, 6:20 PM EDT | Areal Flood Advisory | PHI | Middlesex, Somerset | 3 hr |
| Aug 18, 6:23 PM EDT | Special Weather Statement | PHI | Somerset | 37 min |
| Aug 18, 6:38 PM EDT | Special Weather Statement | PHI | Camden, Gloucester, Salem | 37 min |
| Aug 18, 6:41 PM EDT | Special Marine Warning | PHI | 64 min | |
| Aug 18, 6:43 PM EDT | Areal Flood Advisory | PHI | Monmouth, Ocean | 3 hr |
| Aug 18, 6:48 PM EDT | Special Weather Statement | PHI | Cumberland, Gloucester, Salem | 27 min |
| Aug 18, 6:53 PM EDT | Special Weather Statement | PHI | Middlesex, Monmouth | 52 min |
| Aug 18, 6:54 PM EDT | Special Weather Statement | PHI | Burlington, Camden, Gloucester | 51 min |
| Aug 18, 6:58 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Ocean | 29 min |
| Aug 18, 7:19 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Cape May, Cumberland, Ocean, Salem | 3 hr |
| Aug 18, 7:25 PM EDT | Special Weather Statement | PHI | Atlantic | 50 min |
| Aug 18, 7:34 PM EDT | Special Weather Statement | PHI | Cape May | 26 min |
| Aug 18, 7:39 PM EDT | Special Marine Warning | PHI | 66 min | |
| Aug 18, 7:43 PM EDT | Special Weather Statement | PHI | Burlington, Ocean | 47 min |
| Aug 18, 7:44 PM EDT | Special Marine Warning | PHI | 61 min | |
| Aug 18, 7:49 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland, Gloucester | 35 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2017Every severe thunderstorm warning in 2017
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.