Alert archive / New Jersey / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 63, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 21, 2017, 5:38 PM EDT for 4 counties in New Jersey. It was in force for 37 min. 5 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
- Jun 21, 2017, 5:38 PM EDT (21:38 UTC)
- Expired
- Jun 21, 2017, 6:15 PM EDT
- In force
- 37 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Ocean County, NJ
The radar
The Philadelphia radar (KDIX), 23 km from the middle of the area, began a volume at 21:40 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 |
|---|---|---|---|
| Jun 21, 6:05 PM EDT | TSTM WND DMG | Little Egg Harbor Twp, NJ | SOME TREES DOWN. TIME ESTIMATED FROM RADAR. |
| Jun 21, 6:10 PM EDT | MARINE TSTM WIND 43 | Tuckerton, NJ | WEST CREEK |
| Jun 21, 6:13 PM EDT | TSTM WND GST 57 | Long Beach Twp, NJ | LBI SURF |
| Jun 21, 6:13 PM EDT | MARINE TSTM WIND 57 | Long Beach Twp, NJ | LBI SURF |
| Jun 21, 6:14 PM EDT | TSTM WND GST 50 | Harvey Cedars, NJ | TIME ESTIMATED |
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 12:00Z, 9.6 hours before the alert went out and 178 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
- 23 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 1706 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted.
013
WUUS51 KPHI 212138
SVRPHI
NJC001-005-007-029-212215-
/O.NEW.KPHI.SV.W.0063.170621T2138Z-170621T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
538 PM EDT WED JUN 21 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northern Atlantic County in southern New Jersey...
Central Ocean County in southern New Jersey...
Southeastern Camden County in southern New Jersey...
Southeastern Burlington County in southern New Jersey...
* Until 615 PM EDT
* At 536 PM EDT, severe thunderstorms were located along a line
extending from near Cedar Glen Lakes to Chatsworth to near Atsion,
moving east at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters. Numerous downed trees and wires
have been reported in southeastern Pennsylvania between
400 and 500 PM. Additional damage in Burlington and
Camden Counties in southwestern New Jersey has been
reported between 500 and 530 PM.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Barnegat, Hammonton, Tuckerton, Surf City, Atsion, Wading River,
Warren Grove, Chatsworth, Wharton State Forest, Bamber Lake, Cedar
Glen Lakes, Whiting, Brookville, Bass River State Forest, Batsto,
Old Halfway, New Gretna, Penn State Forest, Beach Haven West and
Pine Ridge At Crestwood.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm has a history of producing wind damage. For your
protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3967 7411 3949 7425 3970 7482 3980 7466
3999 7447 3987 7407
TIME...MOT...LOC 2136Z 291DEG 35KT 3995 7446 3982 7452 3972 7471
HAIL...<.75IN
WIND...60MPH
$$
JRK2 follow-up statements
584
WWUS51 KPHI 212158
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
558 PM EDT WED JUN 21 2017
NJC001-007-212206-
/O.CAN.KPHI.SV.W.0063.000000T0000Z-170621T2215Z/
Atlantic NJ-Camden NJ-
558 PM EDT WED JUN 21 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ATLANTIC AND
SOUTHEASTERN CAMDEN COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3967 7411 3949 7425 3962 7460 3976 7450
3994 7431 3987 7407
TIME...MOT...LOC 2156Z 310DEG 32KT 3990 7425 3970 7438 3961 7451
$$
NJC005-029-212215-
/O.CON.KPHI.SV.W.0063.000000T0000Z-170621T2215Z/
Ocean NJ-Burlington NJ-
558 PM EDT WED JUN 21 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR SOUTHEASTERN OCEAN AND SOUTHEASTERN BURLINGTON COUNTIES...
At 556 PM EDT, severe thunderstorms were located along a line
extending from near Beachwood to near Warren Grove to Wading River,
moving southeast at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters. Numerous downed trees and wires
have been reported in Burlington, Camden and Ocean Counties
in southern New Jersey has been reported since 500 PM.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Barnegat, Tuckerton, Surf City, Bamber Lake, Wading River,
Brookville, Warren Grove, Bass River State Forest, New Gretna, Penn
State Forest, Beach Haven West, Mystic Island, Ocean Acres,
Manahawkin, Waretown and Holiday Heights.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm has a history of producing wind damage. For your
protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3967 7411 3949 7425 3962 7460 3976 7450
3994 7431 3987 7407
TIME...MOT...LOC 2156Z 310DEG 32KT 3990 7425 3970 7438 3961 7451
HAIL...<.75IN
WIND...60MPH
$$
JRK025
WWUS51 KPHI 212209
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
609 PM EDT WED JUN 21 2017
NJC005-029-212215-
/O.CON.KPHI.SV.W.0063.000000T0000Z-170621T2215Z/
Ocean NJ-Burlington NJ-
609 PM EDT WED JUN 21 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR SOUTHEASTERN OCEAN AND SOUTHEASTERN BURLINGTON COUNTIES...
At 606 PM EDT, severe thunderstorms were located along a line
extending from near Browns Mills to near Wharton State Forest to near
Atsion, moving southeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Trained weather spotters and public. Trained weather
spotters. Numerous downed trees and wires have been
reported in Burlington, Camden and Ocean Counties in
southern New Jersey has been reported since 500 PM.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Barnegat, Tuckerton, Surf City, Bass River State Forest, New Gretna,
Beach Haven West, Mystic Island, Manahawkin, Ocean Acres and
Waretown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
The strong winds may occur at Long Beach Island a couple of minutes
after the Severe Thunderstorm Warning is set to expire at 515 PM
before quickly moving offshore.
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm...and
the storm will affect the beaches. For your safety...immediately move
off the beach and seek shelter indoors.
&&
LAT...LON 3967 7411 3951 7423 3949 7425 3958 7448
3958 7449 3972 7435 3991 7420 3987 7407
TIME...MOT...LOC 2206Z 294DEG 35KT 3999 7449 3977 7461 3970 7475
HAIL...<.75IN
WIND...60MPH
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 4:21 PM EDT | Special Weather Statement | PHI | Hunterdon | 39 min |
| Jun 21, 4:28 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 47 min |
| Jun 21, 5:03 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester, Ocean | 42 min |
| Jun 21, 5:19 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth, Ocean | 41 min |
| Jun 21, 5:36 PM EDT | Special Marine Warning | PHI | 84 min | |
| Jun 21, 5:54 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 26 min |
| Jun 21, 6:03 PM EDT | Special Marine Warning | PHI | 42 min | |
| Jun 21, 6:25 PM EDT | Special Marine Warning | PHI | 95 min | |
| Jun 21, 6:27 PM EDT | Special Weather Statement | PHI | Cumberland, Salem | 33 min |
| Jun 21, 6:31 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland, Gloucester, Salem | 44 min |
| Jun 21, 6:52 PM EDT | Special Marine Warning | PHI | 53 min | |
| Jun 21, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland | 48 min |
| Jun 21, 7:05 PM EDT | Special Weather Statement | PHI | Cape May | 25 min |
| Jun 21, 7:11 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 64 min |
| Jun 21, 7:17 PM EDT | Special Marine Warning | PHI | 88 min | |
| Jun 21, 7:56 PM EDT | Special Marine Warning | PHI | 94 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.