Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 75, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 27, 2020, 3:01 PM EDT for Hunterdon County, Morris County, Warren County, New Jersey; Bucks County, Lehigh County, Northampton County, Pennsylvania. It was in force for 44 min. 13 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 27, 2020, 3:01 PM EDT (19:01 UTC)
- Expired
- Jun 27, 2020, 3:45 PM EDT
- In force
- 44 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Hunterdon County, NJ, Morris County, NJ, Warren County, NJ, Bucks County, PA, Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 116 km from the middle of the area, began a volume at 19:03 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 27, 3:05 PM EDT | TSTM WND DMG | 1 Wsw Bethlehem Twp, PA | DOWNED POWER LINES NEAR GREENLEAF STREET. TIME ESTIMATED FROM RADAR. |
| Jun 27, 3:16 PM EDT | TSTM WND GST 60 | Bethlehem Twp, PA | 1.56 INCHES OF RAIN. |
| Jun 27, 3:18 PM EDT | TSTM WND DMG | Salisbury Twp, PA | DOWNED TREES AND WIRES NEAR SALISBURY ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 27, 3:22 PM EDT | TSTM WND DMG | 2 W Allentown, PA | DOWNED TREES AND WIRES NEAR KURTZ STREET. TIME ESTIMATED FROM RADAR. |
| Jun 27, 3:22 PM EDT | TSTM WND DMG | 4 W Allentown, PA | DOWNED TREES AND POWER LINES NEAR CONGRESS STREET. TIME ESTIMATED FROM RADAR. |
| Jun 27, 3:25 PM EDT | TSTM WND DMG | Allentown, PA | TREE DOWN ON READING ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 27, 3:25 PM EDT | TSTM WND DMG | Allentown, PA | TREE DOWN NEAR 12TH AND LINDEN STREETS IN ALLENTOWN. TIME ESTIMATED FROM RADAR. |
| Jun 27, 3:27 PM EDT | TSTM WND DMG | 1 E Emmaus, PA | DOWNED TREES AND POWER LINES NEAR WOODFERN DRIVE. TIME ESTIMATED FROM RADAR. |
| Jun 27, 3:27 PM EDT | TSTM WND DMG | 4 W Allentown, PA | CORRECTS TIME OF PREVIOUS TSTM WND DMG REPORT FROM 4 W ALLENTOWN. TREE DOWN ON AMHERST ROAD. |
| Jun 27, 3:27 PM EDT | TSTM WND DMG | Allentown, PA | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM ALLENTOWN. TREE DOWN ON HAMILTON BLVD IN ALLENTOWN. TIME ESTIMATED FROM RADAR. |
| Jun 27, 3:29 PM EDT | TSTM WND DMG | 1 Ssw Salisbury Twp, PA | DOWNED TREES AND POWER LINES NEAR SOUR APPLE LANE. TIME ESTIMATED FROM RADAR. |
| Jun 27, 3:50 PM EDT | TSTM WND DMG | 4 W Allentown, PA | TREE DOWN ON AMHERST ROAD. |
| Jun 27, 3:50 PM EDT | TSTM WND DMG | Allentown, PA | TREE DOWN ON HAMILTON BLVD IN ALLENTOWN. 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 12:00Z, 7.0 hours before the alert went out and 216 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
- 1675 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
961
WUUS51 KPHI 271901
SVRPHI
NJC019-027-041-PAC017-077-095-271945-
/O.NEW.KPHI.SV.W.0075.200627T1901Z-200627T1945Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
301 PM EDT Sat Jun 27 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
West central Morris County in northern New Jersey...
Northwestern Hunterdon County in northwestern New Jersey...
Southern Warren County in northwestern New Jersey...
Lehigh County in eastern Pennsylvania...
Northwestern Bucks County in southeastern Pennsylvania...
Northampton County in eastern Pennsylvania...
* Until 345 PM EDT.
* At 301 PM EDT, a severe thunderstorm was located over Coffeetown,
or near Allentown, moving southeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Allentown, Easton, Bethlehem, Forks, Emmaus, Northampton,
Quakertown, Perkasie, Wilson, Bedminster, Washington, Hellertown,
Nazareth, Tinicum, High Bridge, Clinton, Bath, Harmony, Oxford and
Alpha.
This includes the following highways...
Northeast Extension between mile markers 42 and 67.
Interstate 78 in Pennsylvania between mile markers 46 and 76.
Interstate 78 in New Jersey between mile markers 0 and 16.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
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 4068 7589 4081 7529 4081 7473 4031 7525
TIME...MOT...LOC 1901Z 294DEG 34KT 4067 7554
HAIL...<.75IN
WIND...60MPH
$$
CMS2 follow-up statements
397
WWUS51 KPHI 271918
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
318 PM EDT Sat Jun 27 2020
NJC019-027-041-PAC017-077-095-271945-
/O.CON.KPHI.SV.W.0075.000000T0000Z-200627T1945Z/
Morris NJ-Hunterdon NJ-Warren NJ-Lehigh PA-Bucks PA-Northampton PA-
318 PM EDT Sat Jun 27 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR WEST CENTRAL MORRIS...NORTHWESTERN HUNTERDON...SOUTHWESTERN
WARREN...SOUTHEASTERN LEHIGH...NORTHWESTERN BUCKS AND SOUTHERN
NORTHAMPTON COUNTIES...
At 317 PM EDT, a severe thunderstorm was located over Lehigh
University, or near Allentown, moving southeast at 40 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Allentown, Easton, Bethlehem, Forks, Emmaus, Northampton, Quakertown,
Perkasie, Wilson, Bedminster, Washington, Hellertown, Nazareth,
Tinicum, High Bridge, Clinton, Bath, Harmony, Alpha and Dublin.
This includes the following highways...
Northeast Extension between mile markers 43 and 63.
Interstate 78 in Pennsylvania between mile markers 48 and 76.
Interstate 78 in New Jersey between mile markers 0 and 16.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
&&
LAT...LON 4063 7576 4074 7536 4081 7473 4031 7525
TIME...MOT...LOC 1917Z 294DEG 34KT 4061 7535
HAIL...0.75IN
WIND...60MPH
$$
CMS425
WWUS51 KPHI 271943
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
343 PM EDT Sat Jun 27 2020
NJC019-027-041-PAC017-077-095-271952-
/O.EXP.KPHI.SV.W.0075.000000T0000Z-200627T1945Z/
Morris NJ-Hunterdon NJ-Warren NJ-Lehigh PA-Bucks PA-Northampton PA-
343 PM EDT Sat Jun 27 2020
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL MORRIS...
NORTHWESTERN HUNTERDON...SOUTHWESTERN WARREN...SOUTHEASTERN LEHIGH...
NORTHWESTERN BUCKS AND SOUTHERN NORTHAMPTON COUNTIES WILL EXPIRE AT
345 PM EDT...
The storm which prompted the warning has partially moved out of the
warned area. Therefore, the warning will be allowed to expire, but a
new warning has been issued which includes eastern portions of the
prior warning.
A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
northwestern New Jersey...and southeastern Pennsylvania.
LAT...LON 4063 7576 4074 7536 4081 7473 4031 7525
TIME...MOT...LOC 1942Z 294DEG 34KT 4070 7553
$$
JEOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 3:32 PM EDT | Areal Flood Advisory | PHI | Warren | 3 hr |
| Jun 27, 3:37 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset, Warren | 53 min |
| Jun 27, 4:17 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Monmouth, Ocean, Somerset | 58 min |
| Jun 27, 4:33 PM EDT | Special Marine Warning | PHI | 87 min | |
| Jun 27, 4:51 PM EDT | Special Weather Statement | PHI | Mercer | 24 min |
| Jun 27, 5:12 PM EDT | Areal Flood Advisory | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 2 hr |
| Jun 27, 5:12 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Monmouth, Ocean | 48 min |
| Jun 27, 5:27 PM EDT | Special Marine Warning | PHI | 63 min | |
| Jun 27, 5:47 PM EDT | Special Weather Statement | PHI | Mercer | 13 min |
| Jun 27, 6:14 PM EDT | Special Weather Statement | PHI | Cumberland | 31 min |
| Jun 27, 6:54 PM EDT | Special Weather Statement | PHI | Cape May | 51 min |
| Jun 27, 6:58 PM EDT | Special Marine Warning | PHI | 32 min | |
| Jun 27, 7:25 PM EDT | Special Marine Warning | PHI | 30 min | |
| Jun 27, 7:25 PM EDT | Special Marine Warning | PHI | 65 min | |
| Jun 27, 7:27 PM EDT | Special Weather Statement | PHI | Ocean | 33 min |
| Jun 27, 2:51 PM EDT | Special Weather Statement | PHI | Lehigh, Northampton | 24 min |
| Jun 27, 5:22 PM EDT | Special Weather Statement | PHI | Berks | 23 min |
| Jun 27, 5:40 PM EDT | Special Weather Statement | PHI | Bucks | 35 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2020Severe Thunderstorm Warnings in Pennsylvania, 2020Every severe thunderstorm warning in 2020
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.