Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 5, NWS Philadelphia/Mount Holly

March 7, 20225 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Mar 7, 2022, 7:29 PM EST for 5 counties in Pennsylvania. It was in force for 61 min. 2 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: Mar 7, 2022, 7:29 PM EST (00:29 UTC)
Expired: Mar 7, 2022, 8:30 PM EST
In force: 61 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, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 142 km from the middle of the area, began a volume at 00:32 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
Mar 7, 8:06 PM EST	TSTM WND DMG	1 Ene Wernersville, PA	1 INCH TREE LIMBS BROKEN; SHINGLES BLOWN OFF.
Mar 7, 8:31 PM EST	TSTM WND DMG	1 Ssw Boyertown, PA	TREES DOWN ON MILL STREET IN BOYERTOWN. REPORT VIA SOCIAL MEDIA.

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
Mar 7, 6:19 PM EST	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 0.5 hours before the alert went out and 255 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 33 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1522 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 382 m²/s²
0-3 km storm-relative helicity: 488 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

410 
WUUS51 KPHI 080029
SVRPHI
PAC011-025-077-089-095-080130-
/O.NEW.KPHI.SV.W.0005.220308T0029Z-220308T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
729 PM EST Mon Mar 7 2022

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...
  Carbon County in northeastern Pennsylvania...
  Monroe County in northeastern Pennsylvania...
  Northampton County in eastern Pennsylvania...

* Until 830 PM EST.

* At 727 PM EST, severe showers and embedded thunderstorms were 
  located along a line extending from near Hop Bottom to Shenandoah 
  to Shiremanstown, moving east at 60 mph. This line has had a 
  history of producing wind damage to the west.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated. 

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Allentown, Reading, Easton, Lehighton, Mount Pocono, Bethlehem,
  Forks, Emmaus, Wyomissing, Northampton, East Stroudsburg,
  Tobyhanna, Wilson, Hellertown, Nazareth, Palmerton, Bangor,
  Kutztown, Jim Thorpe and Hamburg.

This includes the following highways...
 Northeast Extension between mile markers 46 and 97.
 Interstate 78 in Pennsylvania near mile marker 8, and between mile
markers 10 and 75.
 Interstate 80 in Pennsylvania between mile markers 278 and 314.
 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.
 
This line of heavy showers and embedded thunderstorms may contain 
little or no lightning. Do not wait until you hear thunder before 
taking cover.

&&

LAT...LON 4049 7643 4057 7602 4065 7598 4074 7576
      4091 7599 4101 7573 4109 7577 4113 7569
      4112 7564 4123 7554 4125 7513 4115 7515
      4111 7505 4098 7514 4095 7511 4061 7525
      4042 7549 4045 7553 4032 7563 4030 7613
TIME...MOT...LOC 0027Z 264DEG 51KT 4169 7584 4084 7620 4021 7694 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Gorse

1 follow-up statement

233 
WWUS51 KPHI 080052
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
752 PM EST Mon Mar 7 2022

PAC011-025-077-089-095-080130-
/O.CON.KPHI.SV.W.0005.000000T0000Z-220308T0130Z/
Berks PA-Lehigh PA-Carbon PA-Monroe PA-Northampton PA-
752 PM EST Mon Mar 7 2022

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EST
FOR BERKS...LEHIGH...CARBON...MONROE AND NORTHAMPTON COUNTIES...

At 750 PM EST, severe showers and embedded thunderstorms were 
located along a line extending from near Prompton to near Lehighton 
to near Mount Joy, moving east at 60 mph. This line has had a 
history of producing areas of wind damage.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Allentown, Reading, Easton, Lehighton, Mount Pocono, Bethlehem,
Forks, Emmaus, Wyomissing, Northampton, East Stroudsburg, Tobyhanna,
Wilson, Hellertown, Nazareth, Palmerton, Bangor, Kutztown, Jim Thorpe
and Hamburg.

This includes the following highways...
 Northeast Extension between mile markers 46 and 97.
 Interstate 78 in Pennsylvania near mile marker 8, and between mile
markers 10 and 75.
 Interstate 80 in Pennsylvania between mile markers 278 and 314.
 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.

This line of heavy showers and embedded thunderstorms may contain 
little or no lightning. Do not wait until you hear thunder before 
taking cover.

&&

LAT...LON 4049 7643 4057 7602 4065 7598 4074 7576
      4091 7599 4101 7573 4109 7577 4113 7569
      4112 7564 4123 7554 4125 7513 4115 7515
      4111 7505 4098 7514 4095 7511 4061 7525
      4042 7549 4045 7553 4032 7563 4030 7613
TIME...MOT...LOC 0050Z 275DEG 54KT 4163 7536 4078 7573 4015 7647 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Gorse

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 7, 8:05 PM EST	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Lehigh, Monroe, Montgomery and 1 more	70 min
Mar 7, 8:21 PM EST	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	54 min
Mar 7, 8:54 PM EST	Severe Thunderstorm Warning Considerable damage threat	PHI	Bucks, Montgomery	66 min
Mar 7, 9:02 PM EST	Severe Thunderstorm Warning Considerable damage threat	PHI	Bucks, Delaware, Montgomery, Philadelphia	58 min
Mar 8, 3:05 AM EST	Winter Weather Advisory	PHI	Carbon, Monroe	40 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2022 Every severe thunderstorm warning in 2022

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.