Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 25, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 14, 2024, 4:40 PM EDT for Hunterdon County, Warren County, New Jersey; Bucks County, Lehigh County, Northampton County, Pennsylvania. It was in force for 50 min. 6 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 14, 2024, 4:40 PM EDT (20:40 UTC)
- Expired
- Jun 14, 2024, 5:30 PM EDT
- In force
- 50 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Hunterdon County, NJ, Warren County, NJ, Bucks County, PA, Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 126 km from the middle of the area, began a volume at 20:42 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 14, 4:42 PM EDT | TSTM WND DMG | North Whitehall Twp, PA | Reports of trees and wires down around North Whitehall Twp. Time estimated. |
| Jun 14, 4:48 PM EDT | TSTM WND GST 50 | Bethlehem, PA | NWS employee estimates wind gusts of 40 to 50 mph in Bethlehem. |
| Jun 14, 4:52 PM EDT | TSTM WND DMG | 1 E Allentown, PA | Reports of trees and wires down around Allentown. Time estimated. |
| Jun 14, 4:55 PM EDT | TSTM WND GST 39 | 1 Nw Salisbury Twp, PA | AWOS station KXLL Queen City. |
| Jun 14, 4:59 PM EDT | TSTM WND DMG | 1 Ssw Bethlehem, PA | Several Trees down on wires in Bethlehem. Time estimated from radar. |
| Jun 14, 5:02 PM EDT | TSTM WND DMG | Hellertown, PA | Report of trees down on a house in Hellertown. Widespread damage reported across the Allentown/Bethlehem area. 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, 8.7 hours before the alert went out and 226 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
- 61 J/kg
- Mixed-layer CIN
- -132 J/kg
- Mixed-layer LCL
- 969 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 189 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
364
WUUS51 KPHI 142040
SVRPHI
NJC019-041-PAC017-077-095-142130-
/O.NEW.KPHI.SV.W.0025.240614T2040Z-240614T2130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
440 PM EDT Fri Jun 14 2024
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
West central Hunterdon County in northwestern New Jersey...
Southwestern Warren County in northwestern New Jersey...
Lehigh County in eastern Pennsylvania...
Northwestern Bucks County in southeastern Pennsylvania...
Southern Northampton County in eastern Pennsylvania...
* Until 530 PM EDT.
* At 440 PM EDT, a severe thunderstorm was located over Neffs, or 9
miles northwest of Allentown, moving east at 30 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, Northampton, Wilson,
Hellertown, Nazareth, Slatington, Bath, Alpha, Walnutport,
Ferndale, West Easton, Milford, Tatamy, Bloomsbury, Riegelsville,
Steuben, and Glendon.
This includes the following highways...
Northeast Extension between mile markers 56 and 71.
Interstate 78 in Pennsylvania between mile markers 52 and 76.
Interstate 78 in New Jersey between mile markers 0 and 8.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4078 7567 4079 7562 4072 7503 4049 7511
4062 7581 4065 7584
TIME...MOT...LOC 2040Z 283DEG 25KT 4069 7560
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich2 follow-up statements
214
WWUS51 KPHI 142107
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
507 PM EDT Fri Jun 14 2024
NJC019-041-PAC017-077-095-142130-
/O.CON.KPHI.SV.W.0025.000000T0000Z-240614T2130Z/
Hunterdon NJ-Warren NJ-Lehigh PA-Bucks PA-Northampton PA-
507 PM EDT Fri Jun 14 2024
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR WEST CENTRAL HUNTERDON...SOUTHWESTERN WARREN...EAST CENTRAL
LEHIGH...NORTHWESTERN BUCKS AND SOUTHEASTERN NORTHAMPTON COUNTIES...
At 506 PM EDT, a severe thunderstorm was located over Old Orchard, or
near Easton, moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Allentown, Easton, Bethlehem, Forks, Wilson, Hellertown, Nazareth,
Bath, Alpha, Ferndale, West Easton, Milford, Tatamy, Bloomsbury,
Riegelsville, Steuben, Glendon, Revere, Lehigh University, and
Springtown.
This includes the following highways...
Interstate 78 in Pennsylvania between mile markers 62 and 76.
Interstate 78 in New Jersey between mile markers 0 and 8.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4058 7553 4076 7538 4072 7503 4049 7511
4053 7533
TIME...MOT...LOC 2106Z 282DEG 30KT 4064 7530
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich742
WWUS51 KPHI 142124
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
524 PM EDT Fri Jun 14 2024
NJC019-041-PAC017-077-095-142134-
/O.EXP.KPHI.SV.W.0025.000000T0000Z-240614T2130Z/
Hunterdon NJ-Warren NJ-Lehigh PA-Bucks PA-Northampton PA-
524 PM EDT Fri Jun 14 2024
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL HUNTERDON...
SOUTHWESTERN WARREN...EAST CENTRAL LEHIGH...NORTHWESTERN BUCKS AND
SOUTHEASTERN NORTHAMPTON COUNTIES WILL EXPIRE AT 530 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northwestern New Jersey...and southeastern Pennsylvania.
A new Severe Thunderstorm Warning was issued for portions of Warren
and Hunterdon County.
LAT...LON 4058 7553 4076 7538 4072 7503 4049 7511
4053 7533
TIME...MOT...LOC 2124Z 283DEG 25KT 4061 7514
$$
HoeflichThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 4:14 PM EDT | Severe Thunderstorm Warning | PHI | Sussex, Warren | 46 min |
| Jun 14, 5:02 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 43 min |
| Jun 14, 5:18 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 42 min |
| Jun 14, 5:23 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Morris, Somerset, Warren | 52 min |
| Jun 14, 5:37 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Hunterdon, Mercer | 38 min |
| Jun 14, 5:51 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 39 min |
| Jun 14, 5:56 PM EDT | Special Marine Warning | PHI | 64 min | |
| Jun 14, 5:59 PM EDT | Flash Flood Warning | PHI | Burlington | 4 hr |
| Jun 14, 6:09 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Somerset | 21 min |
| Jun 14, 6:18 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth, Somerset | 27 min |
| Jun 14, 6:24 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 51 min |
| Jun 14, 6:29 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Jun 14, 6:34 PM EDT | Severe Thunderstorm Warning | PHI | Cape May, Cumberland | 41 min |
| Jun 14, 6:40 PM EDT | Special Marine Warning | PHI | 65 min | |
| Jun 14, 6:44 PM EDT | Flash Flood Warning | PHI | Burlington, Mercer | 3 hr |
| Jun 14, 6:47 PM EDT | Special Marine Warning | PHI | 58 min | |
| Jun 14, 7:03 PM EDT | Special Marine Warning | PHI | 87 min | |
| Jun 14, 4:37 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 38 min |
| Jun 14, 5:07 PM EDT | Flash Flood Warning | PHI | Chester | 4 hr |
| Jun 14, 5:17 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Montgomery, Philadelphia | 43 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2024Severe Thunderstorm Warnings in New Jersey, 2024Every severe thunderstorm warning in 2024
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.