Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 82, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 25, 2023, 4:16 PM EDT for Chester County, Delaware County, Pennsylvania. It was in force for 44 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 25, 2023, 4:16 PM EDT (20:16 UTC)
- Expired
- Jun 25, 2023, 5:00 PM EDT
- In force
- 44 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Chester County, PA, Delaware County, PA
The radar
The Philadelphia radar (KDIX), 99 km from the middle of the area, began a volume at 20:19 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 25, 4:17 PM EDT | TSTM WND DMG | 1 N Birmingham Twp, PA | Tree down. Time estimated from radar. |
| Jun 25, 4:17 PM EDT | TSTM WND DMG | 1 N Birmingham Twp, PA | Tree down. Time estimated from radar. |
| Jun 25, 4:20 PM EDT | HAIL 0.25 | Thornton, PA | Report of pea sized hail near Thornton. |
| Jun 25, 4:20 PM EDT | HAIL 0.25 | Thornton, PA | Report of pea sized hail near Thornton. |
| Jun 25, 4:27 PM EDT | TSTM WND DMG | 1 Ne Marshallton, PA | Trees and wires down. Time estimated from radar. |
| Jun 25, 4:27 PM EDT | TSTM WND DMG | 1 Ne Marshallton, PA | Trees and wires down. 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.3 hours before the alert went out and 191 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
- 150 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 1013 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
348
WUUS51 KPHI 252016
SVRPHI
PAC029-045-252100-
/O.NEW.KPHI.SV.W.0082.230625T2016Z-230625T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
416 PM EDT Sun Jun 25 2023
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Chester County in southeastern Pennsylvania...
Southwestern Delaware County in southeastern Pennsylvania...
* Until 500 PM EDT.
* At 415 PM EDT, a severe thunderstorm was located over Westtown, or
near West Chester, moving northeast at 5 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to
roofs, siding, trees, and power lines is possible.
* Locations impacted include...
West Chester, Westtown, Gradyville, Cheyney, Elam, Marshallton,
Lima, Concordville, West Goshen, Media, Chester Heights, Upper
Providence Township and Exton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4006 7558 3992 7539 3984 7555 3983 7563
3991 7572
TIME...MOT...LOC 2015Z 229DEG 5KT 3991 7560
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MLB3 follow-up statements
536
WWUS51 KPHI 252034
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
434 PM EDT Sun Jun 25 2023
PAC029-045-252100-
/O.CON.KPHI.SV.W.0082.000000T0000Z-230625T2100Z/
Chester PA-Delaware PA-
434 PM EDT Sun Jun 25 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR SOUTHEASTERN CHESTER AND SOUTHWESTERN DELAWARE COUNTIES...
At 434 PM EDT, a severe thunderstorm was located over Westtown, or
over West Chester, moving northeast at 5 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
West Chester, Westtown, Gradyville, Cheyney, Elam, Marshallton, Lima,
Concordville, West Goshen, Media, Chester Heights, Upper Providence
Township and Exton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4006 7558 3992 7539 3984 7555 3983 7563
3991 7572
TIME...MOT...LOC 2034Z 229DEG 5KT 3993 7557
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MLB560
WWUS51 KPHI 252046
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
446 PM EDT Sun Jun 25 2023
PAC029-045-252100-
/O.CON.KPHI.SV.W.0082.000000T0000Z-230625T2100Z/
Chester PA-Delaware PA-
446 PM EDT Sun Jun 25 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR EAST CENTRAL CHESTER AND WEST CENTRAL DELAWARE COUNTIES...
At 446 PM EDT, a severe thunderstorm was located over Westtown, or
near West Chester, moving northeast at 5 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
West Chester, Westtown, Gradyville, Marshallton, Lima, Cheyney,
Concordville, West Goshen, Media, Chester Heights, Upper Providence
Township and Exton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4006 7558 3992 7539 3984 7561 3991 7572
TIME...MOT...LOC 2046Z 229DEG 5KT 3994 7555
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MLB123
WWUS51 KPHI 252058
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
458 PM EDT Sun Jun 25 2023
PAC029-045-252108-
/O.EXP.KPHI.SV.W.0082.000000T0000Z-230625T2100Z/
Chester PA-Delaware PA-
458 PM EDT Sun Jun 25 2023
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CHESTER AND WEST
CENTRAL DELAWARE COUNTIES WILL EXPIRE AT 500 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 4006 7558 3992 7539 3984 7561 3991 7572
TIME...MOT...LOC 2058Z 229DEG 5KT 3995 7554
$$
MLBThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 24, 8:18 PM EDT | Areal Flood Advisory | PHI | Northampton | 3 hr |
| Jun 24, 9:19 PM EDT | Areal Flood Advisory | PHI | Northampton | 101 min |
| Jun 25, 2:55 PM EDT | Special Weather Statement | PHI | Philadelphia | 35 min |
| Jun 25, 3:18 PM EDT | Areal Flood Advisory | PHI | Bucks, Montgomery | 3 hr |
| Jun 25, 3:24 PM EDT | Special Weather Statement | PHI | Philadelphia | 36 min |
| Jun 25, 3:47 PM EDT | Areal Flood Advisory | PHI | Montgomery, Philadelphia | 15 min |
| Jun 25, 4:01 PM EDT | Flash Flood Warning | PHI | Montgomery, Philadelphia | 4 hr |
| Jun 25, 4:01 PM EDT | Special Weather Statement | PHI | Philadelphia | 29 min |
| Jun 25, 4:05 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 25 min |
| Jun 25, 4:11 PM EDT | Special Weather Statement | PHI | Delaware | 34 min |
| Jun 25, 4:27 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 33 min |
| Jun 25, 4:47 PM EDT | Areal Flood Advisory | PHI | Carbon, Lehigh, Northampton | 3 hr |
| Jun 25, 4:51 PM EDT | Areal Flood Advisory | PHI | Berks, Chester | 3 hr |
| Jun 25, 4:52 PM EDT | Special Weather Statement | PHI | Philadelphia | 23 min |
| Jun 25, 4:57 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 33 min |
| Jun 25, 5:27 PM EDT | Areal Flood Advisory | PHI | Delaware, Montgomery, Philadelphia | 3 hr |
| Jun 25, 5:35 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe | 3 hr |
| Jun 25, 5:56 PM EDT | Areal Flood Advisory | PHI | Berks | 3 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.