Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 5, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 1, 2023, 5:27 PM EDT for 4 counties in Pennsylvania. It was in force for 48 min. 1 report 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
- Apr 1, 2023, 5:27 PM EDT (21:27 UTC)
- Expired
- Apr 1, 2023, 6:15 PM EDT
- In force
- 48 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Berks County, PA, Carbon County, PA, Lehigh County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 145 km from the middle of the area, began a volume at 21:29 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 |
|---|---|---|---|
| Apr 1, 5:31 PM EDT | HAIL 0.5 | 3 Se Weisenberg Twp, PA | REPORT FROM MPING: HALF-INCH (0.50 IN.). |
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 |
|---|---|---|---|
| Apr 1, 2:27 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 9.5 hours before the alert went out and 225 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
- 648 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 448 m²/s²
- 0-3 km storm-relative helicity
- 443 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
212
WUUS51 KPHI 012127
SVRPHI
PAC011-025-077-095-012215-
/O.NEW.KPHI.SV.W.0005.230401T2127Z-230401T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
527 PM EDT Sat Apr 1 2023
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Berks County in eastern Pennsylvania...
Lehigh County in eastern Pennsylvania...
South central Carbon County in northeastern Pennsylvania...
Central Northampton County in eastern Pennsylvania...
* Until 615 PM EDT.
* At 527 PM EDT, severe thunderstorms were located along a line
extending from near Tuscarora to Myerstown, moving east at 50 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...
Allentown, Reading, Bethlehem, Emmaus, Wyomissing, Northampton,
Wilson, Nazareth, Palmerton, Birdsboro, Kutztown, Hamburg,
Slatington, Fleetwood, Sinking Spring, Laureldale, Womelsdorf,
Bath, Wernersville and Walnutport.
This includes the following highways...
Pennsylvania Turnpike between mile markers 296 and 299.
Northeast Extension between mile markers 49 and 73.
Interstate 78 in Pennsylvania between mile markers 10 and 66.
Interstate 176 in Pennsylvania between mile markers 1 and 11.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4052 7634 4052 7625 4056 7609 4058 7606
4057 7602 4065 7598 4070 7583 4074 7576
4080 7586 4080 7513 4078 7517 4074 7519
4014 7587 4049 7643
TIME...MOT...LOC 2127Z 274DEG 45KT 4073 7602 4036 7633
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann2 follow-up statements
743
WWUS51 KPHI 012144
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
544 PM EDT Sat Apr 1 2023
PAC025-012154-
/O.CAN.KPHI.SV.W.0005.000000T0000Z-230401T2215Z/
Carbon PA-
544 PM EDT Sat Apr 1 2023
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL CARBON COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 1000 PM EDT for northwestern
New Jersey...and southeastern Pennsylvania.
A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
eastern Pennsylvania.
LAT...LON 4036 7622 4037 7623 4080 7551 4080 7513
4078 7517 4074 7519 4014 7587
TIME...MOT...LOC 2144Z 274DEG 39KT 4058 7546 4028 7596
$$
PAC011-077-095-012215-
/O.CON.KPHI.SV.W.0005.000000T0000Z-230401T2215Z/
Berks PA-Lehigh PA-Northampton PA-
544 PM EDT Sat Apr 1 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR BERKS...LEHIGH AND CENTRAL NORTHAMPTON COUNTIES...
At 544 PM EDT, severe thunderstorms were located along a line
extending from Allentown to near Wyomissing, moving east at 45 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...
Allentown, Reading, Bethlehem, Emmaus, Wyomissing, Northampton,
Wilson, Nazareth, Birdsboro, Kutztown, Fleetwood, Sinking Spring,
Laureldale, Womelsdorf, Bath, Wernersville, Walnutport, Topton,
Robesonia and Leesport.
This includes the following highways...
Pennsylvania Turnpike between mile markers 296 and 299.
Northeast Extension between mile markers 49 and 67.
Interstate 78 in Pennsylvania between mile markers 37 and 66.
Interstate 176 in Pennsylvania between mile markers 1 and 11.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM EDT for northwestern
New Jersey...and southeastern Pennsylvania.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4036 7622 4037 7623 4080 7551 4080 7513
4078 7517 4074 7519 4014 7587
TIME...MOT...LOC 2144Z 274DEG 39KT 4058 7546 4028 7596
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Staarmann078
WWUS51 KPHI 012207
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
607 PM EDT Sat Apr 1 2023
PAC011-077-095-012217-
/O.EXP.KPHI.SV.W.0005.000000T0000Z-230401T2215Z/
Berks PA-Lehigh PA-Northampton PA-
607 PM EDT Sat Apr 1 2023
...THE SEVERE THUNDERSTORM WARNING FOR BERKS...LEHIGH AND CENTRAL
NORTHAMPTON COUNTIES WILL EXPIRE AT 615 PM EDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible through this evening outside of any
thunderstorms.
A Tornado Watch remains in effect until 1000 PM EDT for northwestern
New Jersey...and southeastern Pennsylvania.
A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
eastern Pennsylvania.
LAT...LON 4036 7622 4037 7623 4080 7551 4080 7513
4078 7517 4074 7519 4014 7587
TIME...MOT...LOC 2207Z 274DEG 39KT 4060 7532 4020 7582
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 1, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery, Northampton | 67 min |
| Apr 1, 6:04 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery | 56 min |
| Apr 1, 6:33 PM EDT | Tornado Warning | PHI | Chester | 27 min |
| Apr 1, 6:37 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 53 min |
| Apr 1, 6:39 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 51 min |
| Apr 1, 6:45 PM EDT | Tornado Warning | PHI | Bucks | 30 min |
| Apr 1, 6:57 PM EDT | Tornado Warning | PHI | Philadelphia | 33 min |
| Apr 1, 7:11 PM EDT | Severe Thunderstorm Warning | PHI | Philadelphia | 64 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.