Alert archive / New Jersey / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 196, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 5, 2017, 6:26 PM EDT for 5 counties in New Jersey; Bucks County, Lehigh County, Northampton County, Pennsylvania. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 5, 2017, 6:26 PM EDT (22:26 UTC)
- Expired
- Sep 5, 2017, 7:15 PM EDT
- In force
- 49 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Bucks County, PA, Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 102 km from the middle of the area, began a volume at 22:25 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 5, 3:26 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 10.4 hours before the alert went out and 184 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
- 217 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 902 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 150 m²/s²
- 0-3 km storm-relative helicity
- 129 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
The text
As transmitted.
894
WUUS51 KPHI 052226
SVRPHI
NJC019-027-035-037-041-PAC017-077-095-052315-
/O.NEW.KPHI.SV.W.0196.170905T2226Z-170905T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
626 PM EDT TUE SEP 5 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southwestern Morris County in northern New Jersey...
Hunterdon County in northwestern New Jersey...
South central Sussex County in northwestern New Jersey...
Warren County in northwestern New Jersey...
Western Somerset County in northern New Jersey...
East central Lehigh County in eastern Pennsylvania...
Northwestern Bucks County in southeastern Pennsylvania...
Northampton County in eastern Pennsylvania...
* Until 715 PM EDT
* At 625 PM EDT, severe thunderstorms were located along a line
extending from Pen Argyl to Springtown to Perkasie, moving east at
45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Doppler radar and trained weather spotters. These storms
have produced wind damage across Berks and upper portions
of Montgomery County.
IMPACT...Expect damage to trees and power lines.
* Severe thunderstorms will be near,
Bangor, Pen Argyl, Wind Gap, Belfast and East Bangor around 630 PM
EDT.
Ferndale, Riegelsville, Glendon and Revere around 635 PM EDT.
Tinicum, Belvidere, Alpha, Milford, Pipersville, Columbia,
Ottsville and Gardenville around 640 PM EDT.
Byram, Oxford, Frenchtown, Bloomsbury, Lumberville and Erwinna
around 645 PM EDT.
Hope, Stockton, Sergeantsville and Great Meadows-Vienna around 650
PM EDT.
Hackettstown, Clinton, Glen Gardner, Hampton, Sand Brook,
Annandale and Allamuchy-Panther Valley around 655 PM EDT.
Flemington, High Bridge, Lebanon and Greendell around 700 PM EDT.
Stanhope, Netcong, Califon, Andover, Cloverhill, White House
Station and Budd Lake around 705 PM EDT.
Other locations impacted by these severe thunderstorms include
Coopersburg, Portland, Sellersville, Raritan, Beattyestown,
Bernardsville, Richlandtown, Stockertown, Silverdale and Eastlawn
Gardens.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to hail and damaging winds...frequent cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Remember...if you can hear thunder...you are close enough to be
struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4104 7463 4071 7457 4045 7460 4033 7533
4036 7538 4051 7540 4085 7533 4086 7529
4090 7523 4094 7514
TIME...MOT...LOC 2225Z 251DEG 38KT 4086 7527 4054 7530 4038 7531
HAIL...0.75IN
WIND...60MPH
$$
JRK3 follow-up statements
487
WWUS51 KPHI 052247
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
647 PM EDT TUE SEP 5 2017
NJC037-041-PAC017-077-095-052257-
/O.CAN.KPHI.SV.W.0196.000000T0000Z-170905T2315Z/
Sussex NJ-Warren NJ-Lehigh PA-Bucks PA-Northampton PA-
647 PM EDT TUE SEP 5 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL SUSSEX...
WARREN...EAST CENTRAL LEHIGH...NORTHWESTERN BUCKS AND NORTHAMPTON
COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A severe thunderstorm watch remains in effect until 900 PM EDT for
northern and northwestern New Jersey.
LAT...LON 4072 7457 4045 7460 4042 7496 4059 7498
4079 7490 4082 7483 4084 7483 4086 7480
4088 7481 4091 7476 4092 7473 4090 7471
4095 7461
TIME...MOT...LOC 2247Z 246DEG 29KT 4085 7481 4062 7491 4046 7492
$$
NJC019-027-035-052315-
/O.CON.KPHI.SV.W.0196.000000T0000Z-170905T2315Z/
Morris NJ-Hunterdon NJ-Somerset NJ-
647 PM EDT TUE SEP 5 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR SOUTHWESTERN MORRIS...EASTERN HUNTERDON AND WESTERN SOMERSET
COUNTIES...
At 647 PM EDT, severe thunderstorms were located along a line
extending from Hackettstown to Clinton to Sand Brook, moving
northeast at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Somerville, Bridgewater, Hopatcong, Manville, Hackettstown, Mount
Arlington, Mendham, Flemington, High Bridge, Stanhope, Netcong,
Clinton, Peapack And Gladstone, Glen Gardner, Chester, Lebanon,
Califon, Far Hills, Millstone and Flagtown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to damaging winds...frequent cloud to ground lightning
is occurring with this storm. Move indoors immediately.
Remember...if you can hear thunder...you are close enough to be
struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4072 7457 4045 7460 4042 7496 4059 7498
4079 7490 4082 7483 4084 7483 4086 7480
4088 7481 4091 7476 4092 7473 4090 7471
4095 7461
TIME...MOT...LOC 2247Z 246DEG 29KT 4085 7481 4062 7491 4046 7492
HAIL...<.75IN
WIND...60MPH
$$
JRK913
WWUS51 KPHI 052306
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
706 PM EDT TUE SEP 5 2017
NJC019-027-035-052315-
/O.CON.KPHI.SV.W.0196.000000T0000Z-170905T2315Z/
Morris NJ-Hunterdon NJ-Somerset NJ-
706 PM EDT TUE SEP 5 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR SOUTHWESTERN MORRIS...EASTERN HUNTERDON AND WESTERN SOMERSET
COUNTIES...
At 705 PM EDT, severe thunderstorms were located along a line
extending from Wharton to near Peapack And Gladstone to near
Cloverhill, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Possible localized damage to trees and power lines.
Locations impacted include...
Somerville, Bridgewater, Hopatcong, Manville, Mount Arlington,
Mendham, Flemington, Stanhope, Netcong, Peapack And Gladstone,
Chester, Lebanon, Far Hills, Millstone, Flagtown, Belle Mead,
Succasunna, Succasunna-Kenvil, Cloverhill and White House Station.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move inside to a safe shelter.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4042 7495 4076 7477 4091 7469 4095 7461
4072 7457 4045 7460
TIME...MOT...LOC 2305Z 250DEG 38KT 4092 7460 4068 7468 4045 7480
HAIL...<.75IN
WIND...60MPH
$$
JRK688
WWUS51 KPHI 052318
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
718 PM EDT TUE SEP 5 2017
NJC019-027-035-052328-
/O.EXP.KPHI.SV.W.0196.000000T0000Z-170905T2315Z/
Morris NJ-Hunterdon NJ-Somerset NJ-
718 PM EDT TUE SEP 5 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MORRIS...EASTERN
HUNTERDON AND WESTERN SOMERSET COUNTIES HAS EXPIRED...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore the warning has
been allowed to expire.
A severe thunderstorm watch remains in effect until 900 PM EDT for
northern and northwestern New Jersey.
LAT...LON 4042 7495 4076 7477 4091 7469 4095 7461
4072 7457 4045 7460
TIME...MOT...LOC 2318Z 251DEG 38KT 4096 7445 4072 7453 4049 7465
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 4:26 PM EDT | Special Weather Statement | PHI | Sussex | 34 min |
| Sep 5, 4:54 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 51 min |
| Sep 5, 5:01 PM EDT | Special Weather Statement | PHI | Sussex, Warren | 29 min |
| Sep 5, 5:22 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Sussex, Warren | 4 hr |
| Sep 5, 5:43 PM EDT | Special Weather Statement | PHI | Morris | 47 min |
| Sep 5, 6:30 PM EDT | Special Weather Statement | PHI | Passaic | 15 min |
| Sep 5, 6:44 PM EDT | Special Weather Statement | PHI | Mercer | 31 min |
| Sep 5, 7:18 PM EDT | Special Weather Statement | PHI | Mercer, Middlesex, Morris, Somerset | 27 min |
| Sep 5, 3:59 PM EDT | Special Weather Statement | PHI | Berks, Lehigh | 31 min |
| Sep 5, 4:08 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Northampton | 52 min |
| Sep 5, 4:34 PM EDT | Areal Flood Advisory | PHI | Berks | 6 hr |
| Sep 5, 5:14 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Sep 5, 5:19 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 56 min |
| Sep 5, 5:30 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Sep 5, 5:49 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 41 min |
| Sep 5, 6:03 PM EDT | Areal Flood Advisory | PHI | Lehigh, Northampton | 3 hr |
| Sep 5, 6:19 PM EDT | Special Weather Statement | PHI | Chester, Delaware | 41 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2017Severe Thunderstorm Warnings in Pennsylvania, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.