Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2022
Severe Thunderstorm Warning 101, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 2, 2022, 3:45 PM EDT for Chester County, Pennsylvania. It was in force for 60 min. 2 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
- Jul 2, 2022, 3:45 PM EDT (19:45 UTC)
- Expired
- Jul 2, 2022, 4:45 PM EDT
- In force
- 60 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
County Chester County, PA
The radar
The Dover AFB radar (KDOX), 117 km from the middle of the area, began a volume at 19:48 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 |
|---|---|---|---|
| Jul 2, 4:16 PM EDT | TSTM WND DMG | 1 Sse Mount Vernon, PA | TREES DOWNED ON WIRES. TIME ESTIMATED VIA RADAR. |
| Jul 2, 4:20 PM EDT | TSTM WND DMG | 1 Nw Oxford, PA | MULTIPLE TREES DOWN ALONG ROUTE 1 NEAR OXFORD. TIME ESTIMATED VIA RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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, 3:02 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 7.8 hours before the alert went out and 152 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
- 499 J/kg
- Mixed-layer CIN
- -137 J/kg
- Mixed-layer LCL
- 1039 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 88 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
511
WUUS51 KPHI 021945
SVRPHI
PAC029-022045-
/O.NEW.KPHI.SV.W.0101.220702T1945Z-220702T2045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
345 PM EDT Sat Jul 2 2022
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southwestern Chester County in southeastern Pennsylvania...
* Until 445 PM EDT.
* At 345 PM EDT, a severe thunderstorm was located near Quarryville,
or 10 miles south of Willow Street, moving southeast at 25 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Wind
damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Oxford, West Grove, Homeville, Glen Roy, Mount Vernon,
Kemblesville, Landenberg, North Star and Avondale.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3974 7612 3973 7610 3974 7610 3976 7606
3981 7603 3983 7604 3983 7602 3987 7601
3988 7598 3980 7571 3977 7575 3972 7577
3972 7613
TIME...MOT...LOC 1945Z 293DEG 20KT 3984 7621
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RCM2 follow-up statements
831
WWUS51 KPHI 022019
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
419 PM EDT Sat Jul 2 2022
PAC029-022045-
/O.CON.KPHI.SV.W.0101.000000T0000Z-220702T2045Z/
Chester PA-
419 PM EDT Sat Jul 2 2022
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR SOUTHWESTERN CHESTER COUNTY...
At 419 PM EDT, a severe thunderstorm was located over Oxford, or 14
miles northwest of Newark, moving southeast at 25 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Wind damage
to roofs, siding, trees, and power lines is possible.
Locations impacted include...
Oxford, Kemblesville, Glen Roy, Mount Vernon, Landenberg and North
Star.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3974 7612 3973 7610 3974 7610 3976 7606
3981 7603 3983 7604 3983 7602 3982 7597
3981 7591 3978 7574 3977 7575 3972 7577
3972 7613
TIME...MOT...LOC 2019Z 293DEG 20KT 3977 7600
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RCM803
WWUS51 KPHI 022040
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
440 PM EDT Sat Jul 2 2022
PAC029-022050-
/O.EXP.KPHI.SV.W.0101.000000T0000Z-220702T2045Z/
Chester PA-
440 PM EDT Sat Jul 2 2022
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CHESTER COUNTY
WILL EXPIRE AT 445 PM EDT...
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning will be allowed to expire. However small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northern Delaware...and southeastern Pennsylvania.
LAT...LON 3974 7612 3973 7610 3974 7610 3976 7606
3981 7603 3983 7604 3983 7602 3982 7597
3981 7591 3978 7574 3977 7575 3972 7577
3972 7613
TIME...MOT...LOC 2040Z 293DEG 20KT 3973 7587
$$
RCMThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 4:48 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 24 min |
| Jul 2, 4:50 PM EDT | Areal Flood Advisory | PHI | Chester | 26 min |
| Jul 2, 5:16 PM EDT | Flash Flood Warning | PHI | Chester | 4 hr |
| Jul 2, 5:19 PM EDT | Special Weather Statement | PHI | Chester | 56 min |
| Jul 2, 7:11 PM EDT | Special Weather Statement | PHI | Berks | 64 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2022Every severe thunderstorm warning in 2022
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.