Alert archive / New Jersey / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 118, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 22, 2017, 6:38 PM EDT for 4 counties in New Jersey; Bucks County, Philadelphia County, Pennsylvania. It was in force for 52 min. 4 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 22, 2017, 6:38 PM EDT (22:38 UTC)
- Expired
- Jul 22, 2017, 7:30 PM EDT
- In force
- 52 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Burlington County, NJ, Camden County, NJ, Monmouth County, NJ, Ocean County, NJ, Bucks County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 32 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 22, 6:55 PM EDT | HAIL 0.75 | Voorhees Twp, NJ | |
| Jul 22, 7:05 PM EDT | TSTM WND DMG | Medford, NJ | TREE DOWN ON GOTTLIEBS FIELD ROAD. |
| Jul 22, 7:05 PM EDT | TSTM WND DMG | Medford, NJ | WIRES DOWN ON PINE BOULEVARD. |
| Jul 22, 7:08 PM EDT | TSTM WND DMG | Medford, NJ | TREE DOWN GOTTLIEB FIELD RD.. TIME EST 88D. |
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, 10.6 hours before the alert went out and 195 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
- 1678 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted.
901
WUUS51 KPHI 222238
SVRPHI
NJC005-007-025-029-PAC017-101-222330-
/O.NEW.KPHI.SV.W.0118.170722T2238Z-170722T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
638 PM EDT SAT JUL 22 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northwestern Ocean County in southern New Jersey...
Central Camden County in southern New Jersey...
Burlington County in southern New Jersey...
Southwestern Monmouth County in central New Jersey...
Southeastern Bucks County in southeastern Pennsylvania...
Central Philadelphia County in southeastern Pennsylvania...
* Until 730 PM EDT
* At 638 PM EDT, severe thunderstorms were located along a line
extending from Bensalem to Magnolia, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Philadelphia, Camden, Gloucester City, Cherry Hill, Bensalem,
Evesham, Mount Laurel, Willingboro, Voorhees, Medford, Lindenwold,
Lumberton, Florence, Bellmawr, Burlington, Bristol, Mount Holly,
Riverside, Berlin and Palmyra.
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
poor drainage flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3981 7443 3969 7452 3972 7465 3984 7507
3988 7513 3989 7514 4003 7508 4014 7500
4010 7433
TIME...MOT...LOC 2238Z 281DEG 28KT 4010 7499 3988 7506
HAIL...<.75IN
WIND...60MPH
$$
JRK3 follow-up statements
829
WWUS51 KPHI 222251
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
651 PM EDT SAT JUL 22 2017
PAC101-222259-
/O.CAN.KPHI.SV.W.0118.000000T0000Z-170722T2330Z/
Philadelphia PA-
651 PM EDT SAT JUL 22 2017
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PHILADELPHIA COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3984 7506 4012 7490 4012 7466 4010 7433
3981 7443 3969 7452 3972 7465
TIME...MOT...LOC 2249Z 281DEG 27KT 4008 7489 3986 7498
$$
NJC005-007-025-029-PAC017-222330-
/O.CON.KPHI.SV.W.0118.000000T0000Z-170722T2330Z/
Ocean NJ-Camden NJ-Burlington NJ-Monmouth NJ-Bucks PA-
651 PM EDT SAT JUL 22 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR NORTHWESTERN OCEAN...CENTRAL CAMDEN...BURLINGTON...SOUTHWESTERN
MONMOUTH AND SOUTHERN BUCKS COUNTIES...
At 649 PM EDT, severe thunderstorms were located along a line
extending from near Burlington to Echelon, moving east at 30 mph.
HAZARD...70 mph wind gusts and quarter size hail. The strongest part
of these storms will move through northern Camden and
central Burlington Counties in southern New Jersey.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Cherry Hill, Evesham, Mount Laurel, Willingboro, Voorhees, Medford,
Lindenwold, Lumberton, Florence, Burlington, Bristol, Mount Holly,
Tabernacle, Shamong, Magnolia, Presidential Lakes Estates, Beverly,
Pemberton, Wrightstown and Florence-Roebling.
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 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
poor drainage flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3984 7506 4012 7490 4012 7466 4010 7433
3981 7443 3969 7452 3972 7465
TIME...MOT...LOC 2249Z 281DEG 27KT 4008 7489 3986 7498
HAIL...1.00IN
WIND...70MPH
$$
JRK169
WWUS51 KPHI 222311
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
711 PM EDT SAT JUL 22 2017
NJC025-PAC017-222318-
/O.CAN.KPHI.SV.W.0118.000000T0000Z-170722T2330Z/
Monmouth NJ-Bucks PA-
711 PM EDT SAT JUL 22 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MONMOUTH AND
SOUTHERN BUCKS COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3979 7489 3984 7490 3991 7484 4002 7486
3998 7437 3981 7443 3969 7452 3972 7465
TIME...MOT...LOC 2308Z 290DEG 27KT 3998 7475 3981 7479
$$
NJC005-007-029-222330-
/O.CON.KPHI.SV.W.0118.000000T0000Z-170722T2330Z/
Ocean NJ-Camden NJ-Burlington NJ-
711 PM EDT SAT JUL 22 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR WESTERN OCEAN...EAST CENTRAL CAMDEN AND CENTRAL BURLINGTON
COUNTIES...
At 708 PM EDT, severe thunderstorms were located along a line
extending from near Mount Holly to near Shamong, moving east at 30
mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated and public reported. Between 630 and 700
PM, numerous trees down were reported in northern Camden
County. A 59 mph wind gust was measured in the city
of Camden at 632 PM.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Medford, Lumberton, Mount Holly, Tabernacle, Shamong, Presidential
Lakes Estates, Pemberton, Wrightstown, Wharton State Forest,
Presidential Lakes, Atsion, Cedar Glen Lakes, Browns Mills,
Leisuretowne, Chatsworth, Old Halfway, Whiting, Medford Lakes,
Country Lake Estates and Nws Office.
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 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
poor drainage flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3979 7489 3984 7490 3991 7484 4002 7486
3998 7437 3981 7443 3969 7452 3972 7465
TIME...MOT...LOC 2308Z 290DEG 27KT 3998 7475 3981 7479
HAIL...1.00IN
WIND...70MPH
$$
JRK335
WWUS51 KPHI 222327
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
727 PM EDT SAT JUL 22 2017
NJC005-007-029-222335-
/O.EXP.KPHI.SV.W.0118.000000T0000Z-170722T2330Z/
Ocean NJ-Camden NJ-Burlington NJ-
727 PM EDT SAT JUL 22 2017
...THE SEVERE THUNDERSTORM WARNING FOR WESTERN OCEAN...EAST CENTRAL
CAMDEN AND CENTRAL BURLINGTON COUNTIES WILL EXPIRE AT 730 PM EDT...
The storms which prompted the warning have moved out of Camden
County. Therefore the warning will be allowed to expire. A Severe
Thunderstorm Warning still remains in effect for portions of central
Burlington and southern Ocean County until 815 PM.
LAT...LON 3979 7489 3984 7490 3991 7484 4002 7486
3998 7437 3981 7443 3969 7452 3972 7465
TIME...MOT...LOC 2325Z 281DEG 28KT 3996 7460 3979 7464
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 2:33 AM EDT | Special Weather Statement | PHI | Cape May | 27 min |
| Jul 22, 2:36 AM EDT | Special Marine Warning | PHI | 54 min | |
| Jul 22, 2:57 AM EDT | Areal Flood Advisory | PHI | Cape May, Cumberland | 2 hr |
| Jul 22, 3:55 AM EDT | Special Marine Warning | PHI | 65 min | |
| Jul 22, 10:45 AM EDT | Coastal Flood Advisory | PHI | Atlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 1 more | 13 hr |
| Jul 22, 3:08 PM EDT | Special Marine Warning | PHI | 97 min | |
| Jul 22, 3:43 PM EDT | Special Marine Warning | PHI | 92 min | |
| Jul 22, 3:50 PM EDT | Special Weather Statement | PHI | Ocean | 55 min |
| Jul 22, 4:05 PM EDT | Areal Flood Advisory | PHI | Burlington, Ocean | 115 min |
| Jul 22, 4:56 PM EDT | Special Weather Statement | PHI | Ocean | 34 min |
| Jul 22, 5:50 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 55 min |
| Jul 22, 6:00 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Mercer | 3 hr |
| Jul 22, 7:10 PM EDT | Areal Flood Advisory | PHI | Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Ocean and 1 more | 4 hr |
| Jul 22, 7:22 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 34 min |
| Jul 22, 7:31 PM EDT | Special Marine Warning | PHI | 119 min | |
| Jul 22, 3:58 PM EDT | Special Weather Statement | PHI | Berks | 62 min |
| Jul 22, 4:11 PM EDT | Areal Flood Advisory | PHI | Berks | 4 hr |
| Jul 22, 4:57 PM EDT | Areal Flood Advisory | PHI | Chester, Montgomery | 4 hr |
| Jul 22, 5:03 PM EDT | Special Weather Statement | PHI | Bucks, Chester, Montgomery | 42 min |
| Jul 22, 5:18 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Delaware, Montgomery, Philadelphia | 42 min |
| Jul 22, 6:46 PM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Carbon, Lehigh, Monroe, Northampton | 4 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.