Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 79, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 17, 2018, 6:19 PM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 41 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 17, 2018, 6:19 PM EDT (22:19 UTC)
- Expired
- Aug 17, 2018, 7:00 PM EDT
- In force
- 41 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Carbon County, PA, Monroe County, PA
The radar
The Binghamton radar (KBGM), 130 km from the middle of the area, began a volume at 22:19 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 17, 3:44 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 10.3 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.
- Mixed-layer CAPE
- 321 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 1245 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
761
WUUS51 KPHI 172219
SVRPHI
PAC025-089-172300-
/O.NEW.KPHI.SV.W.0079.180817T2219Z-180817T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
619 PM EDT FRI AUG 17 2018
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Central Carbon County in northeastern Pennsylvania...
Northwestern Monroe County in northeastern Pennsylvania...
* Until 700 PM EDT.
* At 619 PM EDT, a severe thunderstorm was located near Christmans,
or 11 miles north of Lehighton, moving northeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Mount Pocono, Tobyhanna, Jim Thorpe, Nesquehoning, Weatherly,
Henryville, Pocono Pines, Pocono Raceway, Lake Harmony,
Tannersville, Mountainhome, Alpine Mountain, Long Pond,
Albrightsville, Sun Valley, Arrowhead Lake, Jonas, Meckesville,
Reeders and Analomink.
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 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 4107 7514 4083 7585 4096 7586 4101 7573
4105 7577 4109 7577 4113 7569 4112 7564
4123 7554 4125 7526
TIME...MOT...LOC 2219Z 233DEG 33KT 4100 7572
HAIL...<.75IN
WIND...60MPH
$$
CMS2 follow-up statements
705
WWUS51 KPHI 172237
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
637 PM EDT FRI AUG 17 2018
PAC025-089-172300-
/O.CON.KPHI.SV.W.0079.000000T0000Z-180817T2300Z/
Carbon PA-Monroe PA-
637 PM EDT FRI AUG 17 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR NORTHEASTERN CARBON AND NORTHWESTERN MONROE COUNTIES...
At 636 PM EDT, a severe thunderstorm was located over Lake Harmony,
or 11 miles west of Mount Pocono, moving northeast at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Mount Pocono, Tobyhanna, Henryville, Pocono Pines, Pocono Raceway,
Lake Harmony, Tannersville, Mountainhome, Alpine Mountain, Long Pond,
Albrightsville, Sun Valley, Arrowhead Lake, Jonas, Meckesville,
Reeders, Analomink, McMichael, Canadensis and Scotrun.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4107 7514 4089 7568 4101 7573 4105 7577
4109 7577 4113 7569 4112 7564 4123 7554
4125 7526
TIME...MOT...LOC 2236Z 233DEG 31KT 4107 7557
HAIL...<.75IN
WIND...60MPH
$$
CMS438
WWUS51 KPHI 172250
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
650 PM EDT FRI AUG 17 2018
PAC025-089-172300-
/O.EXP.KPHI.SV.W.0079.000000T0000Z-180817T2300Z/
Carbon PA-Monroe PA-
650 PM EDT FRI AUG 17 2018
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CARBON AND
NORTHWESTERN MONROE COUNTIES WILL EXPIRE AT 700 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 gusty
winds and heavy rain are still possible with this thunderstorm.
A severe thunderstorm watch remains in effect until 1100 PM EDT for
northeastern Pennsylvania.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
in Mount Holly NJ.
LAT...LON 4107 7514 4089 7568 4101 7573 4105 7577
4109 7577 4113 7569 4112 7564 4123 7554
4125 7526
TIME...MOT...LOC 2250Z 233DEG 33KT 4114 7544
$$
CMSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 2:21 PM EDT | Special Weather Statement | PHI | Lehigh | 24 min |
| Aug 17, 4:29 PM EDT | Special Weather Statement | PHI | Berks | 46 min |
| Aug 17, 5:07 PM EDT | Special Weather Statement | PHI | Berks, Lehigh | 53 min |
| Aug 17, 5:12 PM EDT | Special Weather Statement | PHI | Berks | 33 min |
| Aug 17, 5:36 PM EDT | Special Weather Statement | PHI | Lehigh, Northampton | 39 min |
| Aug 17, 5:59 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 31 min |
| Aug 17, 6:00 PM EDT | Special Weather Statement | PHI | Carbon | 30 min |
| Aug 17, 6:18 PM EDT | Special Weather Statement | PHI | Berks | 27 min |
| Aug 17, 6:22 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 38 min |
| Aug 17, 6:23 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 52 min |
| Aug 17, 6:40 PM EDT | Flash Flood Warning | PHI | Berks | 2 hr |
| Aug 17, 7:09 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Carbon, Chester, Lehigh, Monroe and 2 more | 51 min |
| Aug 17, 7:15 PM EDT | Special Weather Statement | PHI | Pike | 15 min |
| Aug 17, 7:34 PM EDT | Special Weather Statement | PHI | Carbon | 26 min |
| Aug 17, 7:39 PM EDT | Special Weather Statement | PHI | Monroe | 51 min |
| Aug 17, 7:42 PM EDT | Special Weather Statement | PHI | Bucks, Northampton | 33 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2018Every severe thunderstorm warning in 2018
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.