Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 241, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 17, 2020, 11:59 PM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 46 min. 7 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
- Aug 17, 2020, 11:59 PM EDT (03:59 UTC)
- Expired
- Aug 18, 2020, 12:45 AM EDT
- In force
- 46 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Carbon County, PA, Monroe County, PA
The radar
The Binghamton radar (KBGM), 132 km from the middle of the area, began a volume at 04:00 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 |
|---|---|---|---|
| Aug 18, 12:11 AM EDT | TSTM WND DMG | Tobyhanna Twp, PA | DOWNED TREE ON LOCUST RIDGE ROAD NEAR SPUR ROAD IN TOBYHANNA TWP. TIME ESTIMATED FROM RADAR. |
| Aug 18, 12:13 AM EDT | TSTM WND DMG | 2 Sse Pocono Lake, PA | DOWNED TREE ON STONEY HOLLOW ROAD IN TOBYHANNA TWP. TIME ESTIMATED FROM RADAR. |
| Aug 18, 12:16 AM EDT | TSTM WND DMG | Pocono Pines, PA | TREE DOWN ON ROADWAY IN POCONO PINES. TIME ESTIMATED BY RADAR. |
| Aug 18, 12:20 AM EDT | TSTM WND DMG | 1 Nnw Coolbaugh Twp, PA | DOWNED TREE ON TIMBER LANE IN TOBYHANNA TWP. TIME ESTIMATED FROM RADAR. |
| Aug 18, 12:22 AM EDT | TSTM WND DMG | 1 Wsw Jonas, PA | DOWNED TREE AND WIRES NEAR STECKEL ROAD IN JONAS. TIME ESTIMATED FROM RADAR. |
| Aug 18, 12:33 AM EDT | TSTM WND DMG | 1 W Reeders, PA | DOWNED TREES AND WIRES NEAR MOUNTAIN SPRING LAKE. TIME ESTIMATED FROM RADAR. |
| Aug 18, 12:34 AM EDT | TSTM WND DMG | 1 Sw Scotrun, PA | DOWNED TREE ON CAMELBACK ROAD NEAR RESORT DRIVE IN TANNERSVILLE. TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 4.0 hours before the alert went out and 230 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
- 116 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 878 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 88 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
811
WUUS51 KPHI 180359
SVRPHI
PAC025-089-180445-
/O.NEW.KPHI.SV.W.0241.200818T0359Z-200818T0445Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1159 PM EDT Mon Aug 17 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northeastern Carbon County in northeastern Pennsylvania...
Monroe County in northeastern Pennsylvania...
* Until 1245 AM EDT.
* At 1159 PM EDT, a severe thunderstorm was located over Blakeslee,
or 13 miles west of Mount Pocono, moving east at 25 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...
Mount Pocono, Tobyhanna, Brodheadsville, Pocono Pines, Gilbert,
Pocono Raceway, Lake Harmony, Skytop, Tannersville, Mountainhome,
Rossland, Long Pond, Albrightsville, Kresgeville, Sun Valley,
Arrowhead Lake, Jonas, Meckesville, Reeders and McMichael.
This includes the following highways...
Northeast Extension between mile markers 83 and 97.
Interstate 80 in Pennsylvania between mile markers 277 and 304.
Interstate 380 in Pennsylvania between mile markers 0 and 13.
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.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4084 7541 4097 7581 4101 7573 4105 7577
4108 7577 4113 7569 4113 7563 4123 7554
4125 7517
TIME...MOT...LOC 0359Z 281DEG 22KT 4110 7562
HAIL...1.00IN
WIND...60MPH
$$
Robertson1 follow-up statement
511
WWUS51 KPHI 180422
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1222 AM EDT Tue Aug 18 2020
PAC025-089-180445-
/O.CON.KPHI.SV.W.0241.000000T0000Z-200818T0445Z/
Carbon PA-Monroe PA-
1222 AM EDT Tue Aug 18 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT
FOR NORTHEASTERN CARBON AND WESTERN MONROE COUNTIES...
At 1222 AM EDT, a severe thunderstorm was located over Long Pond, or
near Mount Pocono, moving east at 25 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Mount Pocono, Tobyhanna, Brodheadsville, Pocono Pines, Gilbert,
Pocono Raceway, Lake Harmony, Skytop, Tannersville, Mountainhome,
Long Pond, Albrightsville, Sun Valley, Arrowhead Lake, Jonas,
Meckesville, Reeders, McMichael, Canadensis and Scotrun.
This includes the following highways...
Northeast Extension between mile markers 87 and 90.
Interstate 80 in Pennsylvania between mile markers 285 and 304.
Interstate 380 in Pennsylvania between mile markers 0 and 13.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4100 7567 4115 7561 4123 7554 4125 7517
4087 7539 4093 7558
TIME...MOT...LOC 0422Z 281DEG 22KT 4107 7543
HAIL...0.75IN
WIND...60MPH
$$
RobertsonThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 11:26 PM EDT | Special Weather Statement | PHI | Monroe | 49 min |
| Aug 18, 12:31 AM EDT | Tornado Warning | PHI | Monroe, Northampton | 29 min |
| Aug 18, 12:39 AM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 66 min |
| Aug 18, 12:58 AM EDT | Special Weather Statement | PHI | Northampton | 47 min |
| Aug 18, 1:13 AM EDT | Areal Flood Advisory | PHI | Bucks, Lehigh, Monroe, Northampton | 2 hr |
| Aug 18, 1:38 AM EDT | Severe Thunderstorm Warning | PHI | Bucks, Northampton | 37 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.