Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 352, NWS Philadelphia/Mount Holly

August 15, 2019Carbon County, Monroe County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 15, 2019, 4:22 PM EDT for Carbon County, Monroe County, Northampton County, Pennsylvania. It was in force for 53 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 15, 2019, 4:22 PM EDT (20:22 UTC)
Expired: Aug 15, 2019, 5:15 PM EDT
In force: 53 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Carbon County, PA, Monroe County, PA, Northampton County, PA

The radar

The Binghamton radar (KBGM), 147 km from the middle of the area, began a volume at 20:22 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, 8.4 hours before the alert went out and 229 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1087 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: -66 m²/s²
0-3 km storm-relative helicity: -1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

997 
WUUS51 KPHI 152022
SVRPHI
PAC025-089-095-152115-
/O.NEW.KPHI.SV.W.0352.190815T2022Z-190815T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
422 PM EDT Thu Aug 15 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Southeastern Carbon County in northeastern Pennsylvania...
  Southwestern Monroe County in northeastern Pennsylvania...
  West central Northampton County in eastern Pennsylvania...

* Until 515 PM EDT.

* At 421 PM EDT, a severe thunderstorm was located over Christmans,
  or 8 miles northeast of Lehighton, moving east at 15 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...
  Palmerton, Jim Thorpe, Bath, Brodheadsville, Kunkletown, Gilbert,
  Rossland, Albrightsville, Kresgeville, Sun Valley, Jonas,
  Meckesville, Reeders, Danielsville, Beltzville State Park,
  Saylorsburg, McMichael, Penn Forest Reservoir, Beersville and
  Christmans.

This includes Interstate 80 in Pennsylvania between mile markers 304
and 306.
 
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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4092 7579 4103 7572 4102 7525 4068 7542
TIME...MOT...LOC 2021Z 287DEG 14KT 4094 7566 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

Robertson

2 follow-up statements

229 
WWUS51 KPHI 152052
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
452 PM EDT Thu Aug 15 2019

PAC025-089-095-152115-
/O.CON.KPHI.SV.W.0352.000000T0000Z-190815T2115Z/
Carbon PA-Monroe PA-Northampton PA-
452 PM EDT Thu Aug 15 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR EAST CENTRAL CARBON...SOUTHWESTERN MONROE AND NORTHWESTERN
NORTHAMPTON COUNTIES...

At 449 PM EDT, a severe thunderstorm was located over Kresgeville, or
12 miles northeast of Lehighton, moving east at 15 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...
Brodheadsville, Kunkletown, Saylorsburg, Gilbert, McMichael,
Rossland, Penn Forest Reservoir, Kresgeville, Sun Valley, Jonas,
Meckesville, Effort, Trachsville, Fiddletown, Merwinsburg and
Bartonsville.

This includes Interstate 80 in Pennsylvania between mile markers 305
and 306.
 
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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4091 7566 4100 7561 4102 7525 4076 7538
TIME...MOT...LOC 2049Z 281DEG 14KT 4093 7551 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

Robertson

069 
WWUS51 KPHI 152107
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
507 PM EDT Thu Aug 15 2019

PAC025-089-095-152115-
/O.EXP.KPHI.SV.W.0352.000000T0000Z-190815T2115Z/
Carbon PA-Monroe PA-Northampton PA-
507 PM EDT Thu Aug 15 2019

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CARBON...
SOUTHWESTERN MONROE AND NORTHWESTERN NORTHAMPTON COUNTIES WILL EXPIRE
AT 515 PM 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 small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.

LAT...LON 4091 7566 4100 7561 4102 7525 4076 7538
TIME...MOT...LOC 2105Z 287DEG 14KT 4091 7544 

$$

Robertson

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 14, 8:09 PM EDT	Special Weather Statement	PHI	Chester	36 min
Aug 14, 8:16 PM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Montgomery, Philadelphia	119 min
Aug 14, 8:48 PM EDT	Special Weather Statement	PHI	Delaware, Philadelphia	42 min
Aug 14, 8:56 PM EDT	Areal Flood Advisory	PHI	Chester, Delaware, Montgomery, Philadelphia	2 hr
Aug 14, 9:12 PM EDT	Flash Flood Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	3 hr
Aug 15, 2:23 AM EDT	Dense Fog Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	6 hr
Aug 15, 3:42 PM EDT	Severe Thunderstorm Warning	PHI	Carbon	48 min
Aug 15, 5:18 PM EDT	Special Weather Statement	PHI	Monroe	27 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2019 Every 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.