Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 225, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 17, 2019, 6:39 PM EDT for Morris County, Sussex County, Warren County, New Jersey. It was in force for 51 min. 2 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 17, 2019, 6:39 PM EDT (22:39 UTC)
- Expired
- Jul 17, 2019, 7:30 PM EDT
- In force
- 51 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ
The radar
The Philadelphia radar (KDIX), 125 km from the middle of the area, began a volume at 22:38 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 17, 6:50 PM EDT | TSTM WND DMG | Hampton Twp, NJ | TREE DOWN IN HAMPTON TWP. TIME ESTIMATED FROM RADAR. |
| Jul 17, 7:05 PM EDT | TSTM WND DMG | 2 Nw Lockwood, NJ | TREE DOWN ON N SHORE RD. TIME ESTIMATED FROM RADAR. |
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 |
|---|---|---|---|
| Jul 17, 1:58 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 10.7 hours before the alert went out and 147 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
- 1986 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 865 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 157 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.2
The text
As transmitted.
636
WUUS51 KPHI 172239
SVRPHI
NJC027-037-041-172330-
/O.NEW.KPHI.SV.W.0225.190717T2239Z-190717T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
639 PM EDT Wed Jul 17 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Central Morris County in northern New Jersey...
Sussex County in northwestern New Jersey...
Northern Warren County in northwestern New Jersey...
* Until 730 PM EDT.
* At 639 PM EDT, severe thunderstorms were located along a line
extending from Branchville to near Five Points to near Hope, moving
east at 40 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Newton, Dover, Hopatcong, Kinnelon, Hackettstown, Butler, Wharton,
Rockaway, Blairstown, Mount Arlington, Franklin, Mountain Lakes,
Stanhope, Riverdale, Hamburg, Netcong, Ogdensburg, Sussex, Hope and
Victory Gardens.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with these storms. 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 4120 7437 4109 7450 4107 7449 4104 7450
4105 7445 4102 7443 4103 7442 4100 7429
4079 7462 4093 7510 4095 7512 4104 7496
4127 7482 4128 7453
TIME...MOT...LOC 2239Z 261DEG 33KT 4114 7478 4104 7485 4094 7502
HAIL...0.75IN
WIND...60MPH
$$
Staarmann2 follow-up statements
539
WWUS51 KPHI 172300
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
700 PM EDT Wed Jul 17 2019
NJC027-037-041-172330-
/O.CON.KPHI.SV.W.0225.000000T0000Z-190717T2330Z/
Morris NJ-Sussex NJ-Warren NJ-
700 PM EDT Wed Jul 17 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR CENTRAL MORRIS...SUSSEX AND NORTHEASTERN WARREN COUNTIES...
At 659 PM EDT, severe thunderstorms were located along a line
extending from Hamburg to Ogdensburg to near Stanhope, moving east at
40 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Newton, Dover, Hopatcong, Kinnelon, Hackettstown, Butler, Wharton,
Rockaway, Mount Arlington, Franklin, Mountain Lakes, Stanhope,
Riverdale, Hamburg, Netcong, Ogdensburg, Sussex, Victory Gardens,
Branchville and Andover.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4120 7437 4109 7450 4107 7449 4104 7450
4105 7445 4102 7443 4103 7442 4100 7429
4079 7462 4089 7496 4106 7486 4127 7468
4128 7453
TIME...MOT...LOC 2259Z 261DEG 35KT 4117 7456 4106 7457 4093 7474
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
$$
Staarmann228
WWUS51 KPHI 172319
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
719 PM EDT Wed Jul 17 2019
NJC041-172329-
/O.CAN.KPHI.SV.W.0225.000000T0000Z-190717T2330Z/
Warren NJ-
719 PM EDT Wed Jul 17 2019
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WARREN COUNTY 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 1000 PM EDT for
northern and northwestern New Jersey.
LAT...LON 4128 7453 4120 7437 4109 7450 4104 7450
4105 7445 4102 7443 4103 7441 4102 7439
4100 7429 4079 7462 4085 7482 4104 7469
4117 7454
TIME...MOT...LOC 2319Z 261DEG 33KT 4120 7433 4109 7434 4096 7451
$$
NJC027-037-172330-
/O.CON.KPHI.SV.W.0225.000000T0000Z-190717T2330Z/
Morris NJ-Sussex NJ-
719 PM EDT Wed Jul 17 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR CENTRAL MORRIS AND EASTERN SUSSEX COUNTIES...
At 719 PM EDT, severe thunderstorms were located along a line
extending from near Upper Greenwood Lake to near West Milford to Lake
Telemark, moving east at 40 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Dover, Hopatcong, Kinnelon, Hackettstown, Butler, Wharton, Rockaway,
Mount Arlington, Franklin, Mountain Lakes, Stanhope, Riverdale,
Hamburg, Netcong, Ogdensburg, Victory Gardens, Lake Mohawk, Vernon
Valley, Green Pond and Succasunna.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4128 7453 4120 7437 4109 7450 4104 7450
4105 7445 4102 7443 4103 7441 4102 7439
4100 7429 4079 7462 4085 7482 4104 7469
4117 7454
TIME...MOT...LOC 2319Z 261DEG 33KT 4120 7433 4109 7434 4096 7451
HAIL...0.75IN
WIND...60MPH
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 3:50 AM EDT | Rip Current Statement | PHI | Atlantic, Cape May, Monmouth, Ocean | 17 hr |
| Jul 17, 3:54 AM EDT | Flash Flood Watch | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 6 more | 19 hr |
| Jul 17, 1:50 PM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 80 min |
| Jul 17, 1:57 PM EDT | Severe Thunderstorm Warning | PHI | Sussex, Warren | 32 min |
| Jul 17, 2:21 PM EDT | Special Weather Statement | PHI | Warren | 24 min |
| Jul 17, 2:28 PM EDT | Special Weather Statement | PHI | Sussex | 32 min |
| Jul 17, 2:44 PM EDT | Special Weather Statement | PHI | Sussex | 31 min |
| Jul 17, 3:14 PM EDT | Excessive Heat Watch | PHI | Atlantic, Burlington, Cape May, Cumberland, Hunterdon, Middlesex and 7 more | 24 hr |
| Jul 17, 6:22 PM EDT | Special Weather Statement | PHI | Sussex | 38 min |
| Jul 17, 7:15 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 45 min |
| Jul 17, 7:16 PM EDT | Special Marine Warning | PHI | 59 min | |
| Jul 17, 7:27 PM EDT | Special Weather Statement | PHI | Hunterdon, Morris | 48 min |
| Jul 17, 7:44 PM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Somerset | 3 hr |
| Jul 17, 7:44 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland, Gloucester, Salem | 46 min |
| Jul 17, 7:56 PM EDT | Special Weather Statement | PHI | Burlington, Camden, Gloucester | 64 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2019Every severe thunderstorm warning in 2019
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.