Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 109, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 30, 2019, 5:20 PM EDT for 5 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 40 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
- May 30, 2019, 5:20 PM EDT (21:20 UTC)
- Expired
- May 30, 2019, 6:00 PM EDT
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Hunterdon County, NJ, Middlesex County, NJ, Morris County, NJ, Somerset County, NJ, Warren County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 87 km from the middle of the area, began a volume at 21:22 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 |
|---|---|---|---|
| May 30, 2:01 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.3 hours before the alert went out and 139 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
- 546 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- -63 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
999
WUUS51 KPHI 302120
SVRPHI
NJC019-023-027-035-041-PAC017-302200-
/O.NEW.KPHI.SV.W.0109.190530T2120Z-190530T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
520 PM EDT Thu May 30 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Morris County in northern New Jersey...
Hunterdon County in northwestern New Jersey...
Southeastern Warren County in northwestern New Jersey...
Somerset County in northern New Jersey...
North central Middlesex County in northern New Jersey...
North central Bucks County in southeastern Pennsylvania...
* Until 600 PM EDT.
* At 519 PM EDT, severe thunderstorms were located along a line
extending from Long Valley to Milford, moving east at 25 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...
Morristown, Somerville, Bridgewater, Dover, Madison, Middlesex,
Florham Park, East Hanover, Bound Brook, Manville, Hackettstown,
Chatham, Wharton, Rockaway, Morris Plains, Mount Arlington,
Mendham, Flemington, Mountain Lakes and High Bridge.
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.
&&
LAT...LON 4082 7434 4079 7437 4074 7437 4067 7446
4066 7445 4066 7440 4063 7442 4060 7446
4059 7442 4042 7464 4054 7518 4092 7474
4090 7471 4091 7467 4088 7434 4086 7432
TIME...MOT...LOC 2119Z 272DEG 23KT 4079 7478 4058 7507
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
$$
SFJ1 follow-up statement
469
WWUS51 KPHI 302143
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
543 PM EDT Thu May 30 2019
NJC041-PAC017-302152-
/O.CAN.KPHI.SV.W.0109.000000T0000Z-190530T2200Z/
Warren NJ-Bucks PA-
543 PM EDT Thu May 30 2019
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WARREN AND NORTH
CENTRAL BUCKS COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A severe thunderstorm watch remains in effect until 900 PM EDT for
northwestern New Jersey.
LAT...LON 4082 7434 4079 7437 4074 7437 4067 7446
4066 7445 4066 7440 4063 7442 4060 7446
4059 7442 4042 7464 4050 7501 4090 7461
4088 7434 4086 7432
TIME...MOT...LOC 2142Z 273DEG 29KT 4078 7452 4057 7481
$$
NJC019-023-027-035-302200-
/O.CON.KPHI.SV.W.0109.000000T0000Z-190530T2200Z/
Morris NJ-Hunterdon NJ-Somerset NJ-Middlesex NJ-
543 PM EDT Thu May 30 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR SOUTHERN MORRIS...NORTHEASTERN HUNTERDON...SOMERSET AND NORTH
CENTRAL MIDDLESEX COUNTIES...
At 542 PM EDT, severe thunderstorms were located along a line
extending from near Morristown to near White House Station, moving
east at 35 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...
Morristown, Somerville, Bridgewater, Dover, Madison, Middlesex,
Florham Park, East Hanover, Bound Brook, Manville, Chatham, Wharton,
Rockaway, Morris Plains, Mendham, Flemington, Mountain Lakes, Peapack
And Gladstone, Chester and Victory Gardens.
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.
&&
LAT...LON 4082 7434 4079 7437 4074 7437 4067 7446
4066 7445 4066 7440 4063 7442 4060 7446
4059 7442 4042 7464 4050 7501 4090 7461
4088 7434 4086 7432
TIME...MOT...LOC 2142Z 273DEG 29KT 4078 7452 4057 7481
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
$$
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 8:00 PM EDT | Special Marine Warning | PHI | 60 min | |
| May 29, 8:02 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Cape May, Ocean | 107 min |
| May 29, 8:35 PM EDT | Special Marine Warning | PHI | 85 min | |
| May 30, 3:20 AM EDT | Flash Flood Watch | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 7 more | 18 hr |
| May 30, 3:33 AM EDT | Dense Fog Advisory | PHI | Burlington, Mercer | 4 hr |
| May 30, 4:17 PM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 4 hr |
| May 30, 4:19 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester | 4 hr |
| May 30, 4:25 PM EDT | Special Weather Statement | PHI | Warren | 35 min |
| May 30, 4:36 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Monmouth, Ocean | 39 min |
| May 30, 4:40 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Warren | 50 min |
| May 30, 4:46 PM EDT | Special Weather Statement | PHI | Salem | 29 min |
| May 30, 4:48 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 42 min |
| May 30, 4:49 PM EDT | Flash Flood Warning | PHI | Warren | 4 hr |
| May 30, 4:57 PM EDT | Areal Flood Advisory | PHI | Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Ocean and 1 more | 4 hr |
| May 30, 4:58 PM EDT | Special Marine Warning | PHI | 62 min | |
| May 30, 5:03 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Somerset, Warren | 4 hr |
| May 30, 5:14 PM EDT | Special Weather Statement | PHI | Salem | 31 min |
| May 30, 5:17 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Mercer, Monmouth | 4 hr |
| May 30, 5:22 PM EDT | Areal Flood Advisory | PHI | Cape May, Cumberland, Gloucester, Salem | 2 hr |
| May 30, 5:23 PM EDT | Special Weather Statement | PHI | Mercer | 37 min |
| May 30, 5:32 PM EDT | Severe Thunderstorm Warning | PHI | Cape May | 43 min |
| May 30, 5:33 PM EDT | Special Marine Warning | PHI | 27 min | |
| May 30, 5:55 PM EDT | Special Marine Warning | PHI | 65 min | |
| May 30, 5:55 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Morris, Somerset | 31 min |
| May 30, 6:06 PM EDT | Flash Flood Warning | PHI | Hunterdon, Middlesex, Morris, Somerset | 4 hr |
| May 30, 6:53 PM EDT | Flash Flood Warning | PHI | Morris, Somerset | 4 hr |
| May 30, 7:35 PM EDT | Special Weather Statement | PHI | Mercer | 25 min |
| May 30, 7:56 PM EDT | Special Weather Statement | PHI | Mercer | 34 min |
| May 29, 8:16 PM EDT | River Flood Warning | PHI | Bucks | 11 hr |
| May 29, 9:57 PM EDT | Areal Flood Warning | PHI | Lehigh | 2 hr |
| May 30, 4:03 PM EDT | Special Weather Statement | PHI | Berks | 27 min |
| May 30, 4:22 PM EDT | Special Weather Statement | PHI | Delaware | 23 min |
| May 30, 5:02 PM EDT | Special Weather Statement | PHI | Philadelphia | 28 min |
| May 30, 6:51 PM EDT | Special Weather Statement | PHI | Berks | 24 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2019Severe Thunderstorm Warnings in Pennsylvania, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.