Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 47, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 23, 2019, 11:22 PM EDT for 4 counties in Pennsylvania; New Castle County, Delaware; Camden County, Gloucester County, Salem County, New Jersey. It was in force for 38 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
- May 23, 2019, 11:22 PM EDT (03:22 UTC)
- Expired
- May 24, 2019, 12:00 AM EDT
- In force
- 38 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties New Castle County, DE, Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 89 km from the middle of the area, began a volume at 03:24 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 00:00Z, 3.4 hours before the alert went out and 194 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
- 225 J/kg
- Mixed-layer CIN
- -114 J/kg
- Mixed-layer LCL
- 1497 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 267 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.3
The text
As transmitted.
078
WUUS51 KPHI 240322
SVRPHI
DEC003-NJC007-015-033-PAC029-045-091-101-240400-
/O.NEW.KPHI.SV.W.0047.190524T0322Z-190524T0400Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1122 PM EDT Thu May 23 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northeastern New Castle County in northern Delaware...
Northern Salem County in southern New Jersey...
Northwestern Camden County in southern New Jersey...
Gloucester County in southern New Jersey...
Southeastern Montgomery County in southeastern Pennsylvania...
Southeastern Chester County in southeastern Pennsylvania...
Southwestern Philadelphia County in southeastern Pennsylvania...
Delaware County in southeastern Pennsylvania...
* Until midnight EDT.
* At 1121 PM EDT, a severe thunderstorm was located over Marshallton,
or over West Chester, moving southeast at 45 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...
Philadelphia, Camden, Wilmington, West Chester, Gloucester City,
Cherry Hill, Chester, Deptford, West Deptford, Glassboro,
Lindenwold, Pennsville, Bellmawr, Yeadon, Westtown, Woodbury,
Pitman, Carneys Point, Downingtown and Folcroft.
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.
In addition to large hail and damaging winds, frequent cloud to
ground lightning is occurring with this storm. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
&&
LAT...LON 3991 7583 4011 7553 3990 7494 3988 7493
3953 7528 3969 7551 3971 7549 3972 7551
3970 7552
TIME...MOT...LOC 0321Z 301DEG 41KT 3996 7566
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$
Robertson2 follow-up statements
980
WWUS51 KPHI 240343
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1143 PM EDT Thu May 23 2019
PAC029-091-240352-
/O.CAN.KPHI.SV.W.0047.000000T0000Z-190524T0400Z/
Montgomery PA-Chester PA-
1143 PM EDT Thu May 23 2019
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MONTGOMERY AND
SOUTHEASTERN CHESTER COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3997 7547 3998 7544 4000 7545 4003 7540
3989 7504 3966 7530 3983 7555
TIME...MOT...LOC 0342Z 297DEG 39KT 3988 7541
$$
DEC003-NJC007-015-033-PAC045-101-240400-
/O.CON.KPHI.SV.W.0047.000000T0000Z-190524T0400Z/
New Castle DE-Salem NJ-Camden NJ-Gloucester NJ-Philadelphia PA-
Delaware PA-
1143 PM EDT Thu May 23 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT
FOR NORTHEASTERN NEW CASTLE...NORTH CENTRAL SALEM...WEST CENTRAL
CAMDEN...NORTHWESTERN GLOUCESTER...SOUTHWESTERN PHILADELPHIA AND
DELAWARE COUNTIES...
At 1142 PM EDT, a severe thunderstorm was located over Chester
Township, or 11 miles southeast of West Chester, moving southeast at
45 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...
Philadelphia, Camden, Gloucester City, Chester, Deptford, West
Deptford, Bellmawr, Yeadon, Woodbury, Folcroft, Swarthmore,
Paulsboro, Westville, Woodbury Heights, National Park, East
Lansdowne, Swedesboro, Brooklawn, Audubon Park and Arden.
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.
&&
LAT...LON 3997 7547 3998 7544 4000 7545 4003 7540
3989 7504 3966 7530 3983 7555
TIME...MOT...LOC 0342Z 297DEG 39KT 3988 7541
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$
MPS430
WWUS51 KPHI 240355
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1155 PM EDT Thu May 23 2019
DEC003-NJC007-015-033-PAC045-101-240404-
/O.EXP.KPHI.SV.W.0047.000000T0000Z-190524T0400Z/
New Castle DE-Salem NJ-Camden NJ-Gloucester NJ-Philadelphia PA-
Delaware PA-
1155 PM EDT Thu May 23 2019
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NEW CASTLE...
NORTH CENTRAL SALEM...WEST CENTRAL CAMDEN...NORTHWESTERN
GLOUCESTER...SOUTHWESTERN PHILADELPHIA AND DELAWARE COUNTIES WILL
EXPIRE AT MIDNIGHT EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 3997 7547 3998 7544 4000 7545 4003 7540
3989 7504 3966 7530 3983 7555
TIME...MOT...LOC 0354Z 301DEG 41KT 3982 7528
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 9:28 PM EDT | Special Weather Statement | PHI | Carbon, Monroe | 32 min |
| May 23, 9:37 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 23 min |
| May 23, 9:50 PM EDT | Tornado Warning | PHI | Carbon, Monroe | 25 min |
| May 23, 9:59 PM EDT | Tornado Warning | PHI | Monroe, Northampton | 31 min |
| May 23, 10:47 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester | 43 min |
| May 23, 11:01 PM EDT | Tornado Warning | PHI | Chester | 29 min |
| May 23, 11:37 PM EDT | Special Weather Statement | PHI | Berks | 38 min |
| May 24, 12:15 AM EDT | Special Weather Statement | PHI | Montgomery, Philadelphia | 30 min |
| May 23, 10:22 PM EDT | Special Weather Statement | PHI | Morris | 23 min |
| May 24, 1:48 AM EDT | Special Weather Statement | PHI | Camden, Gloucester | 42 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2019Severe Thunderstorm Warnings in New Jersey, 2019Severe Thunderstorm Warnings in Delaware, 2019Every severe thunderstorm warning in 2019
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.