Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 22, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 28, 2021, 8:17 PM EDT for Sussex County, New Jersey. It was in force for 43 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
- Apr 28, 2021, 8:17 PM EDT (00:17 UTC)
- Expired
- Apr 28, 2021, 9:00 PM EDT
- In force
- 43 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Sussex County, NJ
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 28, 8:30 PM EDT | TSTM WND DMG | 2 Ssw Sussex, NJ | SOME TREES DOWN IN THE VICINITY OF OPSAL LANE IN THE SOUTHERN PORTION OF WANTAGE TOWNSHIP. POWER OUTAGES REPORTED. TIME ESTIMATED FROM RADAR. |
| Apr 28, 8:43 PM EDT | TSTM WND DMG | 2 Ne Hamburg, NJ | TREES DOWN IN THE VICINITY OF EVERGREEN TRAIL IN VERNON TOWNSHIP. POWER OUTAGES REPORTED. TIME ESTIMATED FROM RADAR. |
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, 0.3 hours before the alert went out and 160 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
- 1815 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 311 m²/s²
- 0-3 km storm-relative helicity
- 286 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
677
WUUS51 KPHI 290017
SVRPHI
NJC037-290100-
/O.NEW.KPHI.SV.W.0022.210429T0017Z-210429T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
817 PM EDT Wed Apr 28 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Sussex County in northwestern New Jersey...
* Until 900 PM EDT.
* At 815 PM EDT, a severe thunderstorm was located over Hainesville,
or near Montague, moving east at 45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Law enforcement. Downed trees and power lines have
been reported with this storm to the west.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Montague, Franklin, Hamburg, Ogdensburg, Sussex, Branchville, High
Point, Pellettown, Crandon Lakes, Highland Lake, Vernon Valley and
Hainesville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm is producing wind damage. SEEK SHELTER NOW inside a
sturdy structure and stay away from windows!
&&
LAT...LON 4120 7436 4106 7454 4111 7496 4118 7488
4121 7486 4124 7486 4129 7483 4135 7475
4136 7470
TIME...MOT...LOC 0015Z 281DEG 40KT 4124 7482
HAIL...0.75IN
WIND...60MPH
$$
Gorse2 follow-up statements
967
WWUS51 KPHI 290033
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
833 PM EDT Wed Apr 28 2021
NJC037-290100-
/O.CON.KPHI.SV.W.0022.000000T0000Z-210429T0100Z/
Sussex NJ-
833 PM EDT Wed Apr 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR CENTRAL SUSSEX COUNTY...
At 832 PM EDT, a severe thunderstorm was located near Sussex, or 10
miles northwest of West Milford, moving east at 45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Franklin, Hamburg, Ogdensburg, Sussex, Branchville, Pellettown,
Crandon Lakes, Highland Lake and Vernon Valley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4120 7436 4106 7454 4110 7488 4133 7464
TIME...MOT...LOC 0032Z 282DEG 40KT 4119 7455
HAIL...0.75IN
WIND...60MPH
$$
Gorse670
WWUS51 KPHI 290052
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
852 PM EDT Wed Apr 28 2021
NJC037-290102-
/O.EXP.KPHI.SV.W.0022.000000T0000Z-210429T0100Z/
Sussex NJ-
852 PM EDT Wed Apr 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SUSSEX COUNTY WILL
EXPIRE AT 900 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
LAT...LON 4120 7436 4106 7454 4110 7488 4133 7464
TIME...MOT...LOC 0052Z 281DEG 40KT 4115 7429
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 8:05 PM EDT | Special Weather Statement | PHI | Sussex | 40 min |
| Apr 28, 9:01 PM EDT | Special Weather Statement | PHI | Passaic | 29 min |
| Apr 29, 3:29 AM EDT | Small Craft Advisory | PHI | 27 hr | |
| Apr 29, 3:29 AM EDT | Storm Watch | PHI | 21 hr | |
| Apr 29, 3:32 AM EDT | High Wind Watch | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 16 hr |
| Apr 29, 3:47 PM EDT | Gale Warning | PHI | 23 hr | |
| Apr 29, 7:23 PM EDT | High Wind Warning | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 26 hr |
| Apr 29, 7:45 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester, Salem | 45 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2021Every severe thunderstorm warning in 2021
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.