Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 101, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 21, 2021, 7:38 PM EDT for 4 counties in Pennsylvania; Warren County, New Jersey. It was in force for 52 min. 24 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 21, 2021, 7:38 PM EDT (23:38 UTC)
- Expired
- Jun 21, 2021, 8:30 PM EDT
- In force
- 52 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Warren County, NJ, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Binghamton radar (KBGM), 139 km from the middle of the area, began a volume at 23:42 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 21, 7:40 PM EDT | TSTM WND DMG | 1 Ene Palmerton, PA | DOWNED TREES AND WIRES NEAR ALLEY F AND PARK LANE. TIME ESTIMATED FROM RADAR. |
| Jun 21, 7:40 PM EDT | TSTM WND DMG | Wind Gap, PA | TREE AND WIRES DOWN ON BROADWAY. TIME ESTIMATED FROM RADAR. |
| Jun 21, 7:43 PM EDT | TSTM WND DMG | 2 S Bartonsville, PA | DOWNED TREES AND WIRES NEAR RIMROCK DRIVE. TIME ESTIMATED FROM RADAR. |
| Jun 21, 7:45 PM EDT | TSTM WND DMG | 1 Se Allentown, PA | A FEW REPORTS OF WIRES DOWN IN THE ALLENTOWN AND BETHLEHEM AREAS. TIME ESTIMATED FROM RADAR. |
| Jun 21, 7:45 PM EDT | TSTM WND DMG | 1 Wnw Emerald, PA | DOWNED TREES AND WIRES NEAR GRANT STREET. TIME ESTIMATED FROM RADAR. |
| Jun 21, 7:45 PM EDT | TSTM WND DMG | 2 Sw Laurys Station, PA | DOWNED POWER LINES NEAR NEFFS LAURYS ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 21, 7:45 PM EDT | TSTM WND DMG | Allentown, PA | FEW REPORTS OF WIRES DOWN IN ALLENTOWN. TIME ESTIMATED FROM RADAR. |
| Jun 21, 7:47 PM EDT | TSTM WND DMG | 1 Nw Tobyhanna Twp, PA | DOWNED TREES AND WIRES NEAR LOCUST RIDGE ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 21, 7:50 PM EDT | TSTM WND DMG | 1 Ene Palmerton, PA | REPORT OF TREE AND WIRES DOWN. TIME ESTIMATED FROM RADAR. |
| Jun 21, 7:52 PM EDT | TSTM WND DMG | 1 Sw Analomink, PA | DOWNED TREES AND WIRES NEAR HALLET ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 21, 7:54 PM EDT | TSTM WND DMG | 1 Nw Moore Twp, PA | DOWNED POWER LINES NEAR DERHAMMER ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 21, 7:54 PM EDT | TSTM WND DMG | 2 Ene Delps, PA | DOWNED TREES AND WIRES NEAR MOUNTAIN ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 21, 7:58 PM EDT | TSTM WND DMG | 1 W Chestnut Hill Twp, PA | DOWNED TREES AND WIRES NEAR TOLL ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 21, 7:58 PM EDT | TSTM WND DMG | Canadensis, PA | DOWNED TREES AND WIRES NEAR ROUTE 447. TIME ESTIMATED FROM RADAR. |
| Jun 21, 8:05 PM EDT | TSTM WND DMG | 2 Sw Jackson Twp, PA | DOWNED TREES AND WIRES NEAR WILTSHIRE ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 21, 8:08 PM EDT | TSTM WND DMG | 2 Ssw Washington Twp, PA | DOWNED TREES AND WIRES NEAR FRANKLIN HILL ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 21, 8:10 PM EDT | TSTM WND DMG | 1 S Bangor, PA | MULTIPLE REPORTS OF TREES AND WIRES DOWN AROUND BANGOR AND WASHINGTON TOWNSHIP. TIME ESTIMATED FROM RADAR. |
| Jun 21, 8:10 PM EDT | TSTM WND DMG | 3 Ese Mount Bethel, PA | REPORT OF WIRES DOWN ALONG RIVER ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 21, 8:12 PM EDT | TSTM WND DMG | 3 Se East Bangor, PA | SEVERAL REPORTS OF DOWNED TREES AND WIRES IN THE RICHMOND AREA. TIME ESTIMATED FROM RADAR. |
| Jun 21, 8:15 PM EDT | TSTM WND DMG | 4 Se East Bangor, PA | DOWNED POWER LINES NEAR DEER RUN ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 21, 8:22 PM EDT | TSTM WND DMG | 2 Sse Columbia, NJ | DOWNED TREES AND WIRES NEAR DELAWARE ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 21, 8:22 PM EDT | TSTM WND DMG | 4 Ne Martins Creek, PA | DOWNED TREE IN WIRES NEAR THE INTERSECTION OF MILLER ROAD AND RICHMOND ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 21, 8:27 PM EDT | TSTM WND DMG | 2 Wsw Hope, NJ | DOWNED TREES AND WIRES NEAR LOCUST LAKE ROAD. TIME ESTIMATED FROM RADAR. |
| Jun 21, 8:32 PM EDT | TSTM WND DMG | 2 Ssw Blairstown, NJ | DOWNED TREES AND WIRES NEAR HOAGLAND ROAD. TIME ESTIMATED FROM RADAR. |
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 |
|---|---|---|---|
| Jun 21, 4:33 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 11.6 hours before the alert went out and 213 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
- 171 J/kg
- Mixed-layer CIN
- -149 J/kg
- Mixed-layer LCL
- 802 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
398
WUUS51 KPHI 212338
SVRPHI
NJC041-PAC025-077-089-095-220030-
/O.NEW.KPHI.SV.W.0101.210621T2338Z-210622T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
738 PM EDT Mon Jun 21 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northwestern Warren County in northwestern New Jersey...
Central Lehigh County in eastern Pennsylvania...
Carbon County in northeastern Pennsylvania...
Monroe County in northeastern Pennsylvania...
Northampton County in eastern Pennsylvania...
* Until 830 PM EDT.
* At 738 PM EDT, severe thunderstorms were located along a line
extending from near White Haven to Coffeetown, moving northeast at
35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Law enforcement. Several reports of trees and wires down
have been received from this line of storms.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Allentown, Easton, Lehighton, Mount Pocono, Bethlehem, Forks,
Emmaus, Northampton, East Stroudsburg, Tobyhanna, Wilson, Nazareth,
Palmerton, Bangor, Jim Thorpe, Slatington, Pen Argyl, Wind Gap,
Bath and Belvidere.
This includes the following highways...
Northeast Extension between mile markers 53 and 97.
Interstate 78 in Pennsylvania between mile markers 51 and 60.
Interstate 80 in Pennsylvania between mile markers 277 and 314.
Interstate 80 in New Jersey between mile markers 0 and 10.
Interstate 380 in Pennsylvania between mile markers 0 and 13.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 these storms. Move indoors
immediately. Remember, if you can hear thunder, you are close enough
to be struck by lightning.
&&
LAT...LON 4115 7515 4114 7509 4109 7504 4108 7502
4084 7496 4066 7526 4049 7560 4100 7577
4101 7573 4105 7577 4108 7577 4113 7569
4112 7564 4123 7554 4125 7513
TIME...MOT...LOC 2338Z 245DEG 32KT 4102 7570 4063 7560
HAIL...0.75IN
WIND...60MPH
$$
CMS2 follow-up statements
079
WWUS51 KPHI 212357
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
757 PM EDT Mon Jun 21 2021
NJC041-PAC025-077-089-095-220030-
/O.CON.KPHI.SV.W.0101.000000T0000Z-210622T0030Z/
Warren NJ-Lehigh PA-Carbon PA-Monroe PA-Northampton PA-
757 PM EDT Mon Jun 21 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR NORTHWESTERN WARREN...CENTRAL LEHIGH...EASTERN CARBON...MONROE
AND NORTHAMPTON COUNTIES...
At 756 PM EDT, severe thunderstorms were located along a line
extending from near Pocono Raceway to near Bath, moving northeast at
35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Law enforcement. Numerous reports of power lines down and
tree damage have been reported in Carbon and northwestern
Lehigh Counties.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Allentown, Easton, Mount Pocono, Bethlehem, Forks, Emmaus,
Northampton, East Stroudsburg, Tobyhanna, Wilson, Nazareth,
Palmerton, Bangor, Slatington, Pen Argyl, Wind Gap, Bath, Belvidere,
Harmony and Oxford.
This includes the following highways...
Northeast Extension between mile markers 53 and 70, and between mile
markers 77 and 93.
Interstate 78 in Pennsylvania between mile markers 52 and 60.
Interstate 80 in Pennsylvania between mile markers 282 and 314.
Interstate 80 in New Jersey between mile markers 0 and 10.
Interstate 380 in Pennsylvania between mile markers 0 and 13.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 4115 7515 4114 7509 4109 7504 4108 7502
4084 7496 4066 7526 4049 7560 4100 7569
4113 7569 4112 7564 4123 7554 4125 7513
TIME...MOT...LOC 2356Z 245DEG 32KT 4108 7552 4069 7543
HAIL...0.75IN
WIND...60MPH
$$
CMS521
WWUS51 KPHI 220028
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
828 PM EDT Mon Jun 21 2021
NJC041-PAC025-077-089-095-220038-
/O.EXP.KPHI.SV.W.0101.000000T0000Z-210622T0030Z/
Warren NJ-Lehigh PA-Carbon PA-Monroe PA-Northampton PA-
828 PM EDT Mon Jun 21 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WARREN...CENTRAL
LEHIGH...EASTERN CARBON...MONROE AND NORTHAMPTON COUNTIES WILL EXPIRE
AT 830 PM EDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until midnight EDT for
northwestern New Jersey...and eastern and northeastern Pennsylvania.
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 4115 7515 4114 7509 4109 7504 4108 7502
4084 7496 4066 7526 4049 7560 4100 7569
4113 7569 4112 7564 4123 7554 4125 7513
TIME...MOT...LOC 0027Z 245DEG 32KT 4120 7519 4081 7510
$$
CMSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 9:27 PM EDT | Special Weather Statement | PHI | Schuylkill | 33 min |
| Jun 20, 9:55 PM EDT | Special Weather Statement | PHI | Lebanon | 35 min |
| Jun 20, 10:04 PM EDT | Areal Flood Advisory | PHI | Berks | 86 min |
| Jun 20, 10:27 PM EDT | Special Weather Statement | PHI | Berks | 33 min |
| Jun 21, 4:35 AM EDT | Heat Advisory | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 15 hr |
| Jun 21, 6:08 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 52 min |
| Jun 21, 6:21 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 54 min |
| Jun 21, 7:02 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Northampton | 43 min |
| Jun 21, 7:12 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 48 min |
| Jun 21, 7:24 PM EDT | Special Marine Warning | PHI | 66 min | |
| Jun 21, 7:43 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 47 min |
| Jun 21, 7:55 PM EDT | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Mercer, Ocean | 50 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2021Severe Thunderstorm Warnings in New Jersey, 2021Every severe thunderstorm warning in 2021
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.