Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 110, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 14, 2024, 2:24 PM EDT for Bucks County, Montgomery County, Philadelphia County, Pennsylvania. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 14, 2024, 2:24 PM EDT (18:24 UTC)
- Expired
- Jul 14, 2024, 2:47 PM EDT
- In force
- 23 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bucks County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 57 km from the middle of the area, began a volume at 18:26 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.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 6.4 hours before the alert went out and 206 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
- -154 J/kg
- Mixed-layer LCL
- 1421 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
808
WUUS51 KPHI 141824
SVRPHI
PAC017-091-101-141915-
/O.NEW.KPHI.SV.W.0110.240714T1824Z-240714T1915Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
224 PM EDT Sun Jul 14 2024
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Montgomery County in southeastern Pennsylvania...
South central Bucks County in southeastern Pennsylvania...
Philadelphia County in southeastern Pennsylvania...
* Until 315 PM EDT.
* At 224 PM EDT, a severe thunderstorm was located over Ambler, or 12
miles northwest of Philadelphia, moving southeast at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Philadelphia, Bensalem, Norristown, Lansdale, West Norriton, East
Norriton, Conshohocken, Hatboro, Ambler, Jenkintown, Rockledge,
Abington, Bryn Athyn, Ivyland, Wissinoming, Feasterville-Trevose,
Tacony, Kensington, Willow Grove, and Germantown.
This includes the following highways...
Pennsylvania Turnpike between mile markers 332 and 356.
Northeast Extension between mile markers 21 and 26.
Interstate 95 in Pennsylvania between mile markers 23 and 38, and
near mile marker 40.
Interstate 476 in Pennsylvania between mile markers 18 and 19.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4007 7493 4005 7497 4002 7501 4002 7504
3998 7507 3997 7511 3996 7512 4013 7537
4028 7525 4014 7487
TIME...MOT...LOC 1824Z 303DEG 12KT 4017 7524
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich2 follow-up statements
444
WWUS51 KPHI 141845
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
245 PM EDT Sun Jul 14 2024
PAC017-091-101-141915-
/O.CON.KPHI.SV.W.0110.000000T0000Z-240714T1915Z/
Montgomery PA-Bucks PA-Philadelphia PA-
245 PM EDT Sun Jul 14 2024
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR SOUTHEASTERN MONTGOMERY...SOUTH CENTRAL BUCKS AND PHILADELPHIA
COUNTIES...
At 244 PM EDT, a severe thunderstorm was located over Abington, or 8
miles north of Philadelphia, moving southeast at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Philadelphia, Bensalem, Hatboro, Ambler, Jenkintown, Rockledge,
Abington, Bryn Athyn, Ivyland, Wissinoming, Feasterville-Trevose,
Willow Grove, Germantown, Northeast Philadelphia, Center City,
Feasterville, Tacony, Andalusia, Holmesburg, and Plymouth Meeting.
This includes the following highways...
Pennsylvania Turnpike between mile markers 334 and 356.
Interstate 95 in Pennsylvania between mile markers 23 and 38, and
near mile marker 40.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4009 7530 4024 7517 4014 7487 4007 7493
4005 7497 4002 7501 4002 7504 3998 7507
3997 7511 3996 7512
TIME...MOT...LOC 1844Z 303DEG 12KT 4013 7516
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hoeflich376
WWUS51 KPHI 141847
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
247 PM EDT Sun Jul 14 2024
PAC017-091-101-141857-
/O.CAN.KPHI.SV.W.0110.000000T0000Z-240714T1915Z/
Montgomery PA-Bucks PA-Philadelphia PA-
247 PM EDT Sun Jul 14 2024
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MONTGOMERY...
SOUTH CENTRAL BUCKS AND PHILADELPHIA COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds are
still possible with this thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 4009 7530 4024 7517 4014 7487 4007 7493
4005 7497 4002 7501 4002 7504 3998 7507
3997 7511 3996 7512
TIME...MOT...LOC 1844Z 303DEG 12KT 4013 7515
$$
HoeflichThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 12:07 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 38 min |
| Jul 14, 12:44 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Montgomery | 46 min |
| Jul 14, 1:23 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 52 min |
| Jul 14, 2:19 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Montgomery | 41 min |
| Jul 14, 2:52 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery | 38 min |
| Jul 14, 2:53 PM EDT | Flash Flood Warning | PHI | Chester | 3 hr |
| Jul 14, 3:03 PM EDT | Excessive Heat Warning | PHI | Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 2 more | 3 days |
| Jul 14, 3:03 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 42 min |
| Jul 14, 3:35 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 40 min |
| Jul 14, 3:44 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 46 min |
| Jul 14, 4:13 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 47 min |
| Jul 14, 4:22 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 32 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.