Alert archive / Pennsylvania / Tornado Warnings in 2023
Tornado Warning 18, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this tornado warning at Jul 2, 2023, 6:57 PM EDT for Berks County, Chester County, Montgomery County, Pennsylvania. It was in force for 9 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 2, 2023, 6:57 PM EDT (22:57 UTC)
- Expired
- Jul 2, 2023, 7:06 PM EDT
- In force
- 9 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Berks County, PA, Chester County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 111 km from the middle of the area, began a volume at 23:00 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 2, 4:31 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 11.0 hours before the alert went out and 209 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
- 137 J/kg
- Mixed-layer CIN
- -151 J/kg
- Mixed-layer LCL
- 1034 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
452
WFUS51 KPHI 022257
TORPHI
PAC011-029-091-022330-
/O.NEW.KPHI.TO.W.0018.230702T2257Z-230702T2330Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
657 PM EDT Sun Jul 2 2023
The National Weather Service in Mount Holly NJ has issued a
* Tornado Warning for...
Southeastern Berks County in eastern Pennsylvania...
West central Montgomery County in southeastern Pennsylvania...
Northeastern Chester County in southeastern Pennsylvania...
* Until 730 PM EDT.
* At 656 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Cedarville, or 11 miles southeast of Reading,
moving east at 20 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
Pottstown, Collegeville, Royersford, Trappe, Schwenksville, Spring
Mount, Gilbertsville, Cedarville, Stowe, Pottsgrove, South
Pottstown, Amity Gardens, Sanatoga, Kenilworth and Halfway House.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4023 7579 4032 7577 4033 7545 4018 7546
TIME...MOT...LOC 2256Z 273DEG 18KT 4027 7573
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Hoeflich1 follow-up statement
814
WWUS51 KPHI 022306
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
706 PM EDT Sun Jul 2 2023
PAC011-029-091-022316-
/O.CAN.KPHI.TO.W.0018.000000T0000Z-230702T2330Z/
Berks PA-Montgomery PA-Chester PA-
706 PM EDT Sun Jul 2 2023
...THE TORNADO WARNING FOR SOUTHEASTERN BERKS...WEST CENTRAL
MONTGOMERY AND NORTHEASTERN CHESTER COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled. However heavy rain is
still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
eastern and southeastern Pennsylvania.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 4023 7579 4032 7577 4033 7545 4018 7546
TIME...MOT...LOC 2305Z 273DEG 18KT 4027 7566
$$
HoeflichThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 5:08 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 52 min |
| Jul 2, 6:16 PM EDT | Tornado Warning | PHI | Berks, Lehigh | 29 min |
| Jul 2, 6:33 PM EDT | Tornado Warning | PHI | Berks, Chester, Montgomery | 27 min |
| Jul 2, 7:06 PM EDT | Tornado Warning | PHI | Chester | 24 min |
| Jul 2, 7:23 PM EDT | Areal Flood Advisory | PHI | Berks | 2 hr |
| Jul 2, 7:25 PM EDT | Tornado Warning | PHI | Chester | 35 min |
| Jul 2, 7:57 PM EDT | Tornado Warning | PHI | Chester | 33 min |
Nearby
Tornado Warnings in Pennsylvania, 2023Every tornado warning in 2023Tornadoes 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.