Alert archive / New Jersey / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 15, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 15, 2018, 3:46 PM EDT for Berks County, Lehigh County, Northampton County, Pennsylvania; 4 counties in New Jersey. It was in force for 74 min. 58 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
- May 15, 2018, 3:46 PM EDT (19:46 UTC)
- Expired
- May 15, 2018, 5:00 PM EDT
- In force
- 74 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Hunterdon County, NJ, Morris County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 119 km from the middle of the area, began a volume at 19:48 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 |
|---|---|---|---|
| May 15, 4:06 PM EDT | TSTM WND DMG | Knowlton, NJ | NUMEROUS TREES DOWN. |
| May 15, 4:07 PM EDT | TSTM WND DMG | 1 Sw Wind Gap, PA | TREES DOWN ON ROUTE 33 NORTHBOUND BLOCKING THE RIGHT LANE. |
| May 15, 4:08 PM EDT | TSTM WND GST 60 | Lenhartsville, PA | |
| May 15, 4:08 PM EDT | TSTM WND GST 62 | Lenhartsville, PA | |
| May 15, 4:10 PM EDT | TSTM WND DMG | Bushkill Twp, PA | MULTIPLE TREES DOWN. |
| May 15, 4:11 PM EDT | TSTM WND DMG | Slateford, PA | DOWNED TREE ON STATE HIGHWAY 611 NEAR RAILROAD AVENUE. ALL LANES CLOSED. TIME APPROXIMATED FROM RADAR. |
| May 15, 4:12 PM EDT | TSTM WND DMG | Frankford Twp, NJ | TREES DOWN. |
| May 15, 4:13 PM EDT | TSTM WND GST 58 | Cherry Hill, PA | MEASURED DURING THE GUST FRONT. |
| May 15, 4:14 PM EDT | TSTM WND DMG | Branchville, NJ | MULTIPLE SOCIAL MEDIA POSTS AND PHOTOS OF TREE AND PROPERTY DAMAGE IN BRANCHVILLE. TIME ESTIMATED FROM RADAR. |
| May 15, 4:15 PM EDT | TSTM WND DMG | Bangor, PA | SEVERAL REPORTS OF TREES AND POWERLINES DOWN ACROSS NORTHAMPTON COUNTY. TIME ESTIMATED FROM RADAR |
| May 15, 4:15 PM EDT | TSTM WND DMG | Fredon, NJ | UPROOTED AND SNAPPED TREES |
| May 15, 4:17 PM EDT | TSTM WND DMG | Blairstown, NJ | NUMEROUS REPORTS OF POWER LINES DOWN. TIME APPROXIMATED FROM RADAR. |
| May 15, 4:18 PM EDT | TSTM WND DMG | New Tripoli, PA | TREES DOWN AND ROOF DAMAGE AT A RESIDENCE IN NEW TRIPOLI. TIME ESTIMATED FROM RADAR. |
| May 15, 4:18 PM EDT | TSTM WND DMG | Upper Tulpehocken Twp, PA | TREE AND PROPERTY DAMAGE AT A TRAILER PARK IN UPPER TULPEHOCKEN TWP. TIME ESTIMATED BY RADAR. |
| May 15, 4:20 PM EDT | TSTM WND DMG | 1 Nw Newton, NJ | DOWNED TREE ON STATE HIGHWAY 94 SOUTH OF WEST END AVENUE IN NEWTON. LANE CLOSURES IN PLACE. TIME APPROXIMATED FROM RADAR. |
| May 15, 4:20 PM EDT | TSTM WND DMG | Sparta, NJ | EXTENSIVE TREE DAMAGE AND SEVERAL POWER LINES DOWN IN SPARTA. SEVERAL ROADS CLOSED. TIME APPROXIMATED FROM RADAR. |
| May 15, 4:20 PM EDT | TSTM WND DMG | Stillwater Twp, NJ | SEVERAL STRUCTURES WITH DAMAGE DUE TO DOWNED TREES. NUMEROUS ROADS IMPASSABLE DUE TO DEBRIS. |
| May 15, 4:20 PM EDT | HAIL 0.88 | Germansville, PA | NICKEL SIZE HAIL IN HEIDELBURG TOWNSHIP |
| May 15, 4:22 PM EDT | TSTM WND DMG | 1 Nw Ackerson, NJ | DOWNED TREE ON STATE HIGHWAY 15 NEAR STATE HIGHWAY 94 IN LAFAYETTE TWP. ALL LANES CLOSED AND DETOURED. TIME APPROXIMATED FROM RADAR. |
| May 15, 4:22 PM EDT | TSTM WND GST 51 | Lehigh Valley Intl Airp, PA | KABE REPORTS WIND GUST OF 51 MPH |
| May 15, 4:23 PM EDT | TSTM WND DMG | Springdale, NJ | DOWNED TREE ON U.S. HIGHWAY 206 NEAR SPRINGDALE ROAD IN ANDOVER TWP. ALL LANES CLOSED AND DETOURED. TIME APPROXIMATED FROM RADAR. |
| May 15, 4:24 PM EDT | TSTM WND DMG | 2 Ese Upper Bern Twp, PA | RECEIVED A CALL FROM A PROPERTY OWNER THAT REPORTED SIGNIFICANT TREE DAMAGE INCLUDING APPROX. 40 TREES UPROOTED OR SNAPPED AND LEAVES STRIPPED OFF OF TREES STILL STANDING. SOME SHINGLES WERE ALSO BLOWN OFF OF HIS HOME |
| May 15, 4:25 PM EDT | TSTM WND DMG | Newton, NJ | TREES DOWN ON POWERLINES. |
| May 15, 4:25 PM EDT | TSTM WND DMG | Shartlesville, PA | LARGE TREE AT LEAST ONE FOOT IN DIAMETER DOWN. |
| May 15, 4:25 PM EDT | TSTM WND DMG | Vernon, NJ | DOWNED TREE ON STATE HIGHWAY 94 NEAR VERNON CROSSINGS ROAD. ALL LANES CLOSED AND DETOURED. TIME ESTIMATED FROM RADAR. |
| May 15, 4:25 PM EDT | HAIL 0.75 | Shartlesville, PA | DIME SIZED HAIL. |
| May 15, 4:27 PM EDT | FUNNEL CLOUD | 5 Sse Bernville, PA | BRIEF FUNNEL CLOUD REPORTED SOUTH-SOUTHEAST OF BERNVILLE. |
| May 15, 4:27 PM EDT | TSTM WND DMG | Wind Gap, PA | DOWNED TREES REPORTED IN WIND GAP, WITH SOME DAMAGING CARS. TIME APPROXIMATED FROM RADAR. |
| May 15, 4:28 PM EDT | TSTM WND DMG | Stockholm, NJ | DOWNED TREE ON STATE HIGHWAY 23 NORTH OF PATERSON HAMBURG TURNPIKE. LANE CLOSURES IN PLACE. |
| May 15, 4:30 PM EDT | TSTM WND DMG | 1 Wsw Rasleytown, PA | TREE DOWN ON A HOUSE IN PLAINFIELD TWP. |
| May 15, 4:30 PM EDT | TSTM WND DMG | Wyomissing, PA | TREE DOWN ON A HOUSE. |
| May 15, 4:30 PM EDT | TSTM WND GST 58 | Cherry Hill, PA | |
| May 15, 4:35 PM EDT | TSTM WND DMG | Green Pond, NJ | TREES DOWN, SOME ONTO HOMES. |
| May 15, 4:35 PM EDT | TSTM WND DMG | Saint Lawrence, PA | TREE DOWN ON A HOUSE. |
| May 15, 4:35 PM EDT | HAIL 0.5 | Wantage, NJ | |
| May 15, 4:36 PM EDT | TSTM WND DMG | 1 Sse Hilltown, NJ | DOWNED TREE AT THE MOUNT HOPE EXIT ON INTERSTATE 80. EXIT RAMP CLOSED. TIME APPROXIMATED FROM RADAR. |
| May 15, 4:37 PM EDT | TSTM WND DMG | Duttonville, NJ | MANY TREES DOWN AFTER HIGH WINDS. HEAVY RAIN AND LIGHTNING. |
| May 15, 4:39 PM EDT | TSTM WND DMG | 1 Sse Fullerton, PA | DOWNED TREE AT SEVENTH STREET AND VIRGINIA AVENUE IN WHITEHALL TWP. TIME ESTIMATED FROM RADAR. |
| May 15, 4:39 PM EDT | TSTM WND DMG | Washington Twp, NJ | FALLEN TREE SMASHED A VEHICLE IN WASHINGTON TWP. TIME ESTIMATED FROM RADAR. |
| May 15, 4:40 PM EDT | TSTM WND DMG | North Catasauqua, PA | NUMEROUS TREES AND POWER LINES DOWN IN N CATASAUQUA. A WIND GUST OF 57 MPH WAS ALSO MEAUSURED DURING THIS TIME. TIME ESTIMATED FROM RADAR |
| May 15, 4:41 PM EDT | TSTM WND DMG | Phillipsburg, NJ | NUMEROUS TREES DOWN IN PHILLIPSBURG. TIME APPROXIMATED FROM RADAR. |
| May 15, 4:41 PM EDT | TSTM WND DMG | Tabor, NJ | DOWNED TREE ON STATE HIGHWAY 53 NEAR FRONT STREET IN DENVILLE TWP. ALL LANES CLOSED. TIME APPROXIMATED FROM RADAR. |
| May 15, 4:42 PM EDT | TSTM WND DMG | 1 Ne Griesemersville, PA | ROOF COLLAPSE FROM STRONG WINDS. |
| May 15, 4:42 PM EDT | TSTM WND DMG | Boonton, NJ | TREES DOWN THROUGHOUT BOONTON. SEVERAL ROADS CLOSED. TIME APPROXIMATED FROM RADAR. |
| May 15, 4:45 PM EDT | TSTM WND GST 68 | Lower Macungie Twp, PA | WIND GUST OF 68 MPH MEASURED WITH HAND HELD ANEMOMETER...HOWEVER THE DEVICE HAD NOT BEEN CALIBRATED RECENTLY. TREE DAMAGE ALSO REPORTED |
| May 15, 4:46 PM EDT | TSTM WND DMG | Pohatcong Twp, NJ | NUMEROUS TREES, POWER LINES, AND UTILITY POLES DOWN THROUGHOUT POHATCONG TWP. SEVERAL ROAD CLOSURES IN PLACE. |
| May 15, 4:46 PM EDT | TSTM WND GST 55 | 1 S Ruscomb Manor Twp, PA | CWOP STATION REPORTS WIND GUST OF 55 MPH |
| May 15, 4:50 PM EDT | TSTM WND DMG | Knowlton Twp, NJ | TREE DOWN ON I-80 EASTBOUND |
| May 15, 4:50 PM EDT | TSTM WND DMG | North Catasauqua, PA | THREE-FOOT DIAMETER TREE FELL ONTO AND DAMAGED TWO DUMPSTERS AND A FENCE. |
| May 15, 4:51 PM EDT | TSTM WND DMG | Hampton, NJ | MULTIPLE TREES AND POWER LINES DOWN. TIME ESTIMATED FROM RADAR. |
| May 15, 4:52 PM EDT | TSTM WND GST 59 | S Allentown, PA | TRAINED SPOTTER REPORTS WIND GUST OF 59 MPH MEASURED WITH A HANDHELD ANEMOMETER. PEA SIZE HAIL WAS ALSO FALLING AT THE TIME |
| May 15, 4:52 PM EDT | HAIL 0.75 | 1 S Allentown, PA | DIME SIZE HAIL IN S ALLENTOWN |
| May 15, 4:55 PM EDT | TSTM WND DMG | Wyomissing, PA | 6 INCH DIAMTER TREE SNAPPED AT THE BASE. TIME ESTIMATED FROM RADAR |
| May 15, 4:57 PM EDT | TSTM WND DMG | West Reading, PA | TREE DOWN ON A HOUSE. NO INJURIES REPORTED. TIME ESTIMATED FROM RADAR. |
| May 15, 4:59 PM EDT | TSTM WND DMG | College Heights, PA | DOWNED TREES ON SKYLINE DRIVE NEAR MCKNIGHT GAP ROAD. TIME ESTIMATED FROM RADAR. |
| May 15, 5:00 PM EDT | TSTM WND GST 60 | West Lawn, PA | LARGE TREE DOWN IN PICTURE. |
| May 15, 5:02 PM EDT | TSTM WND DMG | Pennside, PA | DOWNED TREE DAMAGED A HOUSE. TIME ESTIMATED FROM RADAR. |
| May 15, 5:04 PM EDT | TSTM WND DMG | Oley Twp, PA | NUMEROUS TREES DOWN IN OLEY TOWNSHIP, WITH SEVERAL ROADS CLOSED. 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 |
|---|---|---|---|
| May 15, 1:46 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 7.8 hours before the alert went out and 184 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
- 909 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 153 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
970
WUUS51 KPHI 151946
SVRPHI
NJC019-027-037-041-PAC011-077-095-152100-
/O.NEW.KPHI.SV.W.0015.180515T1946Z-180515T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
346 PM EDT TUE MAY 15 2018
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Morris County in northern New Jersey...
Northwestern Hunterdon County in northwestern New Jersey...
Sussex County in northwestern New Jersey...
Warren County in northwestern New Jersey...
Berks County in eastern Pennsylvania...
Lehigh County in eastern Pennsylvania...
Northampton County in eastern Pennsylvania...
* Until 500 PM EDT.
* At 344 PM EDT, an area of severe thunderstorms were moving east
from the southern Poconos and Schuylkill county. Th storms are
moving east at around 65 mph.
HAZARD...70 mph wind gusts and quarter size hail.
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...
Allentown, Reading, Easton, Port Jervis, Newton, Montague,
Bethlehem, Dover, Hopatcong, Forks, Emmaus, Wyomissing, Kinnelon,
Northampton, Hackettstown, Boonton, Wilson, Butler, Wharton and
Washington.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4118 7439 4110 7449 4104 7450 4105 7445
4097 7428 4093 7429 4058 7519 4060 7522
4025 7605 4049 7643 4057 7602 4065 7598
4077 7570 4086 7529 4109 7497 4109 7499
4135 7475 4136 7469
TIME...MOT...LOC 1944Z 259DEG 69KT 4100 7533
HAIL...1.00IN
WIND...70MPH
$$
po1 follow-up statement
163
WWUS51 KPHI 152016
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
416 PM EDT TUE MAY 15 2018
NJC019-027-037-041-PAC011-077-095-152100-
/O.CON.KPHI.SV.W.0015.000000T0000Z-180515T2100Z/
Morris NJ-Hunterdon NJ-Sussex NJ-Warren NJ-Berks PA-Lehigh PA-
Northampton PA-
416 PM EDT TUE MAY 15 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR MORRIS...NORTHWESTERN HUNTERDON...SUSSEX...WARREN...BERKS...
LEHIGH AND NORTHAMPTON COUNTIES...
At 414 PM EDT, a line of severe thunderstorms were located from near
Newton in Sussex County New Jersey southwest to near Womelsdorf in
Berks County Pennsylvania. The storms were moving east at 65 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
Allentown, Reading, Easton, Port Jervis, Newton, Montague, Bethlehem,
Dover, Hopatcong, Forks, Emmaus, Wyomissing, Kinnelon, Northampton,
Hackettstown, Boonton, Wilson, Butler, Wharton and Washington.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
&&
LAT...LON 4118 7439 4110 7449 4104 7450 4105 7445
4097 7428 4093 7429 4058 7519 4060 7522
4025 7605 4049 7643 4057 7602 4065 7598
4077 7570 4086 7529 4109 7497 4109 7499
4135 7475 4136 7469
TIME...MOT...LOC 2014Z 259DEG 69KT 4111 7457
HAIL...1.00IN
WIND...70MPH
$$
poThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 3:40 AM EDT | Flash Flood Watch | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more | 21 hr |
| May 15, 2:49 PM EDT | Special Weather Statement | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 56 min |
| May 15, 3:20 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 55 min |
| May 15, 4:12 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 33 min |
| May 15, 4:24 PM EDT | Special Weather Statement | PHI | Berks | 51 min |
| May 15, 4:26 PM EDT | Tornado Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 19 min |
| May 15, 4:41 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery, Northampton | 64 min |
| May 15, 5:12 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 63 min |
| May 15, 5:14 PM EDT | Areal Flood Advisory | PHI | Berks, Chester, Montgomery | 2 hr |
| May 15, 5:22 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 38 min |
| May 15, 5:31 PM EDT | Areal Flood Advisory | PHI | Bucks, Lehigh, Montgomery | 3 hr |
| May 15, 5:35 PM EDT | Areal Flood Advisory | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| May 15, 5:38 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 67 min |
| May 15, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 52 min |
| May 15, 6:10 PM EDT | Areal Flood Advisory | PHI | Philadelphia | 4 hr |
| May 15, 6:15 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 60 min |
| May 15, 6:35 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 40 min |
| May 15, 6:58 PM EDT | Areal Flood Advisory | PHI | Chester | 4 hr |
| May 15, 4:49 PM EDT | Special Marine Warning | PHI | 86 min | |
| May 15, 6:02 PM EDT | Special Marine Warning | PHI | 88 min | |
| May 15, 6:12 PM EDT | Special Marine Warning | PHI | 63 min | |
| May 15, 6:17 PM EDT | Special Weather Statement | PHI | Burlington, Camden, Cumberland, Gloucester, Ocean | 43 min |
| May 15, 6:46 PM EDT | Special Weather Statement | PHI | Atlantic, Cumberland, Ocean, Salem | 74 min |
| May 15, 7:14 PM EDT | Special Marine Warning | PHI | 91 min | |
| May 15, 7:18 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 57 min |
| May 15, 7:30 PM EDT | Special Marine Warning | PHI | 90 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2018Severe Thunderstorm Warnings in Pennsylvania, 2018Every severe thunderstorm warning in 2018
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.