Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 214, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 7, 2020, 10:34 AM EDT for Carbon County, Lehigh County, Pennsylvania. It was in force for 56 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
- Aug 7, 2020, 10:34 AM EDT (14:34 UTC)
- Expired
- Aug 7, 2020, 11:30 AM EDT
- In force
- 56 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Carbon County, PA, Lehigh County, PA
The radar
The Binghamton radar (KBGM), 153 km from the middle of the area, began a volume at 14:35 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
Brookhaven, NY (KOKX), launched 12:00Z, 2.6 hours before the alert went out and 247 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
- 1352 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
241
WUUS51 KPHI 071434
SVRPHI
PAC025-077-071530-
/O.NEW.KPHI.SV.W.0214.200807T1434Z-200807T1530Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1034 AM EDT Fri Aug 7 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northwestern Lehigh County in eastern Pennsylvania...
Southern Carbon County in northeastern Pennsylvania...
* Until 1130 AM EDT.
* At 1033 AM EDT, a severe thunderstorm was located over Sheppton, or
near Mahanoy City, moving east at 30 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...
Lehighton, Palmerton, Jim Thorpe, Slatington, Nesquehoning,
Weatherly, New Mahoning, Beltzville State Park, New Tripoli, Jordan
Valley, Emerald, Lansford, Summit Hill, Bowmanstown, Beaver
Meadows, Parryville, Weissport, Weissport East and Tresckow.
This includes Northeast Extension between mile markers 69 and 85.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
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 4096 7586 4098 7584 4096 7558 4076 7561
4066 7576 4070 7584 4071 7581 4074 7576
4083 7590 4091 7599
TIME...MOT...LOC 1433Z 284DEG 28KT 4089 7614
HAIL...0.75IN
WIND...60MPH
$$
BAH2 follow-up statements
966
WWUS51 KPHI 071501
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1101 AM EDT Fri Aug 7 2020
PAC025-077-071530-
/O.CON.KPHI.SV.W.0214.000000T0000Z-200807T1530Z/
Lehigh PA-Carbon PA-
1101 AM EDT Fri Aug 7 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 AM EDT
FOR NORTHWESTERN LEHIGH AND SOUTHERN CARBON COUNTIES...
At 1059 AM EDT, a severe thunderstorm was located over Mcadoo, or
near Hazleton, moving east at 25 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Lehighton, Palmerton, Jim Thorpe, Slatington, Nesquehoning,
Weatherly, New Mahoning, Beltzville State Park, Jordan Valley,
Lansford, Summit Hill, Bowmanstown, Beaver Meadows, Parryville,
Weissport, Weissport East and Tresckow.
This includes Northeast Extension between mile markers 69 and 85.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4096 7558 4076 7562 4069 7571 4071 7580
4074 7576 4083 7590 4091 7599 4096 7586
4098 7584
TIME...MOT...LOC 1459Z 274DEG 23KT 4091 7598
HAIL...0.75IN
WIND...60MPH
$$
Fitzsimmons029
WWUS51 KPHI 071528
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1128 AM EDT Fri Aug 7 2020
PAC025-077-071538-
/O.EXP.KPHI.SV.W.0214.000000T0000Z-200807T1530Z/
Lehigh PA-Carbon PA-
1128 AM EDT Fri Aug 7 2020
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN LEHIGH AND
SOUTHERN CARBON COUNTIES WILL EXPIRE AT 1130 AM 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 gusty
winds are still possible with this thunderstorm.
LAT...LON 4096 7558 4076 7562 4069 7571 4071 7580
4074 7576 4083 7590 4091 7599 4096 7586
4098 7584
TIME...MOT...LOC 1528Z 284DEG 28KT 4086 7572
$$
BAHThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 6:49 AM EDT | Areal Flood Advisory | PHI | Berks | 4 hr |
| Aug 7, 9:22 AM EDT | Areal Flood Advisory | PHI | Bucks | 3 hr |
| Aug 7, 11:28 AM EDT | Special Weather Statement | PHI | Carbon, Lehigh | 47 min |
| Aug 7, 2:34 PM EDT | Areal Flood Advisory | PHI | Berks | 4 hr |
| Aug 7, 3:46 PM EDT | Areal Flood Advisory | PHI | Carbon, Lehigh, Northampton | 4 hr |
| Aug 7, 4:10 PM EDT | Flash Flood Warning | PHI | Berks | 2 hr |
| Aug 7, 4:20 PM EDT | Areal Flood Advisory | PHI | Chester, Montgomery | 4 hr |
| Aug 7, 4:32 PM EDT | Flash Flood Warning | PHI | Chester | 3 hr |
| Aug 7, 4:47 PM EDT | Special Weather Statement | PHI | Chester | 28 min |
| Aug 7, 5:00 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 60 min |
| Aug 7, 5:03 PM EDT | Flash Flood Warning | PHI | Chester, Delaware | 5 hr |
| Aug 7, 5:15 PM EDT | Areal Flood Advisory | PHI | Bucks | 3 hr |
| Aug 7, 5:25 PM EDT | Areal Flood Advisory | PHI | Bucks, Montgomery, Philadelphia | 3 hr |
| Aug 7, 5:38 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 52 min |
| Aug 7, 5:43 PM EDT | Flash Flood Warning | PHI | Montgomery, Philadelphia | 4 hr |
| Aug 7, 5:49 PM EDT | Tornado Warning | PHI | Chester, Delaware | 26 min |
| Aug 7, 5:57 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 48 min |
| Aug 7, 6:00 PM EDT | Tornado Warning | PHI | Delaware | 30 min |
| Aug 7, 6:39 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 27 min |
| Aug 7, 7:10 PM EDT | River Flood Warning | PHI | Delaware | 7 hr |
| Aug 7, 7:17 PM EDT | Areal Flood Warning | PHI | Bucks, Montgomery | 3 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2020Every severe thunderstorm warning in 2020
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.