Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 178, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 9, 2023, 3:15 PM EDT for Berks County, Pennsylvania. It was in force for 30 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 9, 2023, 3:15 PM EDT (19:15 UTC)
- Expired
- Jul 9, 2023, 3:45 PM EDT
- In force
- 30 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Berks County, PA
The radar
The Philadelphia radar (KDIX), 123 km from the middle of the area, began a volume at 19:16 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 9, 11:06 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 7.3 hours before the alert went out and 215 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
- 952 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 686 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
413
WUUS51 KPHI 091915
SVRPHI
PAC011-091945-
/O.NEW.KPHI.SV.W.0178.230709T1915Z-230709T1945Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
315 PM EDT Sun Jul 9 2023
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Berks County in eastern Pennsylvania...
* Until 345 PM EDT.
* At 315 PM EDT, a severe thunderstorm was located near Birdsboro, or
7 miles east of Reading, moving northeast at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Fleetwood, Bally, Bechtelsville, Lyons, Boyertown, St. Lawrence,
Amity Gardens, Reiffton and Lorane.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
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 4051 7582 4041 7556 4037 7559 4025 7573
4031 7588
TIME...MOT...LOC 1915Z 214DEG 9KT 4033 7578
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MLB2 follow-up statements
759
WWUS51 KPHI 091928
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
328 PM EDT Sun Jul 9 2023
PAC011-091945-
/O.CON.KPHI.SV.W.0178.000000T0000Z-230709T1945Z/
Berks PA-
328 PM EDT Sun Jul 9 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR EAST CENTRAL BERKS COUNTY...
At 328 PM EDT, a severe thunderstorm was located near Bechtelsville,
or 9 miles east of Reading, moving northeast at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Bally, Bechtelsville, Lyons and Boyertown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4049 7578 4041 7556 4037 7559 4029 7572
4034 7584
TIME...MOT...LOC 1928Z 214DEG 9KT 4036 7576
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MLB030
WWUS51 KPHI 091941
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
341 PM EDT Sun Jul 9 2023
PAC011-091951-
/O.EXP.KPHI.SV.W.0178.000000T0000Z-230709T1945Z/
Berks PA-
341 PM EDT Sun Jul 9 2023
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL BERKS COUNTY WILL
EXPIRE AT 345 PM EDT...
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 will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 600 PM EDT for
eastern and southeastern Pennsylvania.
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 4049 7578 4041 7556 4037 7559 4029 7572
4034 7584
TIME...MOT...LOC 1941Z 214DEG 9KT 4038 7574
$$
MLBThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 11:00 AM EDT | Special Weather Statement | PHI | Carbon | 30 min |
| Jul 9, 11:33 AM EDT | Flash Flood Warning | PHI | Chester, Delaware, Montgomery | 8 hr |
| Jul 9, 11:47 AM EDT | Special Weather Statement | PHI | Monroe | 43 min |
| Jul 9, 11:49 AM EDT | Special Weather Statement | PHI | Montgomery | 41 min |
| Jul 9, 11:54 AM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Lehigh, Montgomery | 33 min |
| Jul 9, 12:14 PM EDT | Special Weather Statement | PHI | Bucks | 46 min |
| Jul 9, 12:15 PM EDT | Special Weather Statement | PHI | Monroe | 30 min |
| Jul 9, 12:22 PM EDT | Special Weather Statement | PHI | Lebanon | 38 min |
| Jul 9, 12:27 PM EDT | Flash Flood Warning | PHI | Berks, Bucks, Lehigh, Montgomery | 8 hr |
| Jul 9, 12:37 PM EDT | Areal Flood Advisory | PHI | Bucks, Lehigh, Northampton | 2 hr |
| Jul 9, 12:43 PM EDT | Areal Flood Advisory | PHI | Berks | 33 min |
| Jul 9, 12:51 PM EDT | Special Weather Statement | PHI | Northampton | 24 min |
| Jul 9, 12:57 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe | 6 hr |
| Jul 9, 1:02 PM EDT | Flash Flood Warning | PHI | Bucks, Lehigh, Northampton | 8 hr |
| Jul 9, 1:16 PM EDT | Flash Flood Warning | PHI | Berks | 6 hr |
| Jul 9, 1:17 PM EDT | Special Weather Statement | PHI | Berks | 28 min |
| Jul 9, 1:32 PM EDT | Areal Flood Advisory | PHI | Carbon, Lehigh, Monroe, Northampton | 4 hr |
| Jul 9, 2:16 PM EDT | Areal Flood Advisory | PHI | Berks, Lehigh | 30 min |
| Jul 9, 2:41 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Jul 9, 2:46 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh, Northampton | 6 hr |
| Jul 9, 3:01 PM EDT | Special Weather Statement | PHI | Berks | 29 min |
| Jul 9, 3:03 PM EDT | Special Weather Statement | PHI | Chester | 27 min |
| Jul 9, 3:20 PM EDT | Special Weather Statement | PHI | Berks | 25 min |
| Jul 9, 3:27 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester | 33 min |
| Jul 9, 3:41 PM EDT | Special Weather Statement | PHI | Berks | 34 min |
| Jul 9, 3:51 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Lehigh, Montgomery | 6 hr |
| Jul 9, 3:59 PM EDT | Special Weather Statement | PHI | Chester | 31 min |
| Jul 9, 4:03 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 27 min |
| Jul 9, 4:19 PM EDT | Special Weather Statement | PHI | Chester | 26 min |
| Jul 9, 4:31 PM EDT | Flash Flood Warning | PHI | Chester, Montgomery | 4 hr |
| Jul 9, 5:10 PM EDT | Severe Thunderstorm Warning | PHI | Delaware | 50 min |
| Jul 9, 5:12 PM EDT | Flash Flood Warning | PHI | Bucks, Montgomery | 5 hr |
| Jul 9, 5:15 PM EDT | Special Weather Statement | PHI | Bucks, Delaware, Philadelphia | 30 min |
| Jul 9, 5:31 PM EDT | Flash Flood Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| Jul 9, 5:35 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 25 min |
| Jul 9, 5:59 PM EDT | Flash Flood Warning | PHI | Bucks, Montgomery | 4 hr |
| Jul 9, 6:05 PM EDT | Special Weather Statement | PHI | Bucks | 25 min |
| Jul 9, 7:04 PM EDT | Areal Flood Warning | PHI | Berks | 9 hr |
| Jul 9, 7:11 PM EDT | Areal Flood Advisory | PHI | Bucks | 3 hr |
| Jul 9, 7:27 PM EDT | River Flood Warning | PHI | Chester | 4 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2023Every severe thunderstorm warning in 2023
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.