Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 61, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 6, 2023, 6:24 PM EDT for Chester County, Pennsylvania. It was in force for 51 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
- Jun 6, 2023, 6:24 PM EDT (22:24 UTC)
- Expired
- Jun 6, 2023, 7:15 PM EDT
- In force
- 51 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
County Chester County, PA
The radar
The Philadelphia radar (KDIX), 120 km from the middle of the area, began a volume at 22:27 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 10.4 hours before the alert went out and 180 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2274 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
447
WUUS51 KPHI 062224
SVRPHI
PAC029-062315-
/O.NEW.KPHI.SV.W.0061.230606T2224Z-230606T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
624 PM EDT Tue Jun 6 2023
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Central Chester County in southeastern Pennsylvania...
* Until 715 PM EDT.
* At 623 PM EDT, a severe thunderstorm was located over Honey Brook,
or 9 miles east of New Holland, moving southeast at 30 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, Coatesville, Downingtown, Kennett Square, Honey
Brook, Elverson, Glenmoore, Marshallton, Lionville-Marchwood, West
Goshen, South Coatesville, Avondale, Modena, Exton, Thorndale and
Toughkenamon.
This includes Pennsylvania Turnpike between mile markers 300 and 311.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4004 7593 4011 7594 4014 7587 4018 7581
3996 7553 3986 7563 3978 7576 4002 7595
TIME...MOT...LOC 2223Z 320DEG 25KT 4012 7591
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MJL3 follow-up statements
272
WWUS51 KPHI 062245
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
645 PM EDT Tue Jun 6 2023
PAC029-062315-
/O.CON.KPHI.SV.W.0061.000000T0000Z-230606T2315Z/
Chester PA-
645 PM EDT Tue Jun 6 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR CENTRAL CHESTER COUNTY...
At 645 PM EDT, a severe thunderstorm was located over Coatesville, or
9 miles west of West Chester, moving southeast at 30 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
West Chester, Coatesville, Downingtown, Kennett Square, Glenmoore,
Marshallton, Lionville-Marchwood, West Goshen, South Coatesville,
Avondale, Modena, Exton, Thorndale and Toughkenamon.
This includes Pennsylvania Turnpike between mile markers 307 and 311.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4012 7574 3996 7553 3986 7563 3978 7576
4001 7592
TIME...MOT...LOC 2245Z 320DEG 25KT 4000 7578
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MJL211
WWUS51 KPHI 062257
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
657 PM EDT Tue Jun 6 2023
PAC029-062315-
/O.CON.KPHI.SV.W.0061.000000T0000Z-230606T2315Z/
Chester PA-
657 PM EDT Tue Jun 6 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR CENTRAL CHESTER COUNTY...
At 657 PM EDT, a severe thunderstorm was located over Marshallton, or
near West Chester, moving southeast at 30 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, Downingtown, Kennett Square, Marshallton, West Goshen,
South Coatesville, Avondale, Modena, Toughkenamon and Thorndale.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4003 7569 3996 7553 3986 7563 3978 7576
3995 7583
TIME...MOT...LOC 2257Z 320DEG 25KT 3994 7571
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MJL345
WWUS51 KPHI 062308
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
708 PM EDT Tue Jun 6 2023
PAC029-062318-
/O.EXP.KPHI.SV.W.0061.000000T0000Z-230606T2315Z/
Chester PA-
708 PM EDT Tue Jun 6 2023
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CHESTER COUNTY WILL
EXPIRE AT 715 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
LAT...LON 4003 7569 3996 7553 3986 7563 3978 7576
3995 7583
TIME...MOT...LOC 2308Z 320DEG 25KT 3989 7565
$$
MJLThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 3:49 AM EDT | Red Flag Warning | PHI | Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more | 16 hr |
| Jun 6, 2:15 PM EDT | Special Weather Statement | PHI | Northampton | 30 min |
| Jun 6, 2:28 PM EDT | Special Weather Statement | PHI | Berks | 32 min |
| Jun 6, 2:58 PM EDT | Special Weather Statement | PHI | Berks | 32 min |
| Jun 6, 3:45 PM EDT | Special Weather Statement | PHI | Montgomery | 30 min |
| Jun 6, 3:56 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 35 min |
| Jun 6, 4:00 PM EDT | Special Weather Statement | PHI | Berks | 30 min |
| Jun 6, 4:06 PM EDT | Special Weather Statement | PHI | Berks | 24 min |
| Jun 6, 4:13 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 36 min |
| Jun 6, 4:25 PM EDT | Special Weather Statement | PHI | Philadelphia | 35 min |
| Jun 6, 4:41 PM EDT | Special Weather Statement | PHI | Chester | 34 min |
| Jun 6, 4:46 PM EDT | Special Weather Statement | PHI | Delaware | 29 min |
| Jun 6, 5:05 PM EDT | Special Weather Statement | PHI | Chester | 25 min |
| Jun 6, 5:45 PM EDT | Special Weather Statement | PHI | Berks | 30 min |
| Jun 6, 6:15 PM EDT | Special Weather Statement | PHI | Chester | 30 min |
| Jun 6, 7:39 PM EDT | Special Weather Statement | PHI | Chester | 36 min |
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.