Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 14, NWS Philadelphia/Mount Holly

May 15, 2018Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 15, 2018, 3:20 PM EDT for Carbon County, Monroe County, Pennsylvania. It was in force for 55 min. 18 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
May 15, 2018, 3:20 PM EDT (19:20 UTC)
Expired
May 15, 2018, 4:15 PM EDT
In force
55 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

Counties Carbon County, PA, Monroe County, PA

The radar

The Binghamton radar (KBGM), 139 km from the middle of the area, began a volume at 19:23 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

TimeReportWhereRemark
May 15, 3:33 PM EDTTSTM WND DMGEast Side, PATWO POLES FELL ON A BUILDING AT A POLLING LOCATION IN WHITE HAVEN. SEVERAL TREES WERE DOWN IN THE AREA AS WELL. TIME APPROXIMATED BY RADAR.
May 15, 3:40 PM EDTTSTM WND DMGPenn Forest Twp, PATREES DOWN.
May 15, 3:45 PM EDTTSTM WND GST 501 W Emerald Lakes, PACWOP STATION REPORTS WIND GUST OF 50 MPH
May 15, 3:48 PM EDTTSTM WND DMGMount Pocono, PANUMEROUS TREES DOWNED. ONE DAMAGED A CAR ON LONG POND ROAD. TIME APPROXIMATED FROM RADAR.
May 15, 3:48 PM EDTHAIL 0.882 Ne Albrightsville, PA
May 15, 3:50 PM EDTTSTM WND DMG1 Ne Merwinsburg, PA*** 1 FATAL *** TREE DOWN ON A CAR KILLING ONE PERSON INSIDE, NEAR THE TOWN OF EFFORT.
May 15, 3:54 PM EDTTSTM WND DMG1 Nw Polk Twp, PADOWNED UTILITY ON STATE HIGHWAY 534 NEAR DOTTERS CORNER ROAD. ALL LANES CLOSED. TIME APPROXIMATED FROM RADAR.
May 15, 3:54 PM EDTTSTM WND DMGMount Pocono, PASEVERAL ROADS CLOSED AND POWER LINES DOWN. *EVENT TIME CORRECTED*
May 15, 3:54 PM EDTHAIL 0.882 Ne Albrightsville, PAHAIL COVERING GROUND AND 45 MPH GUSTS.
May 15, 3:56 PM EDTTSTM WND DMG1 Ne Bossardsville, PANUMEROUS TREES DOWN.
May 15, 3:56 PM EDTTSTM WND GST 731 Ne Bossardsville, PA
May 15, 4:00 PM EDTTSTM WND DMG1 Ene Mechanicsville, PARECEIVED A CALL FROM A PROPERTY OWNER REPORTING SIGNIFCANT TREE DAMAGE INCLUDING A ROW OF 10 TREES UPROOTED AND DAMGAGE TO A GROVE OF TREES IN A VALLEY WITH TREES SNAPPED AND UPROOTED
May 15, 4:00 PM EDTTSTM WND DMGStroudsburg, PANUMEROUS TREES DOWN ON VEHICLES, HOUSES, AND ROADS. MANY ROAD CLOSURES AND 80,000 ESTIMATED WITHOUT POWER. HOLDING STUDENTS IN SCHOOLS.
May 15, 4:04 PM EDTHAIL 0.25Effort, PA50 MPH GUSTS AND SMALL TWIGS AND BRANCHES DOWN.
May 15, 4:05 PM EDTTSTM WND DMGTurn Villa, PADOWNED TREE IN WIRES ON U.S. HIGHWAY 209 NEAR CAESARS POCONO PALACE ROAD. ALL LANES CLOSED. TIME APPROXIMATED FROM RADAR.
May 15, 4:08 PM EDTTSTM WND GST 582 Nnw Monroe Lake, PASPOTTER ESTIMATES WIND GUSTS OF 58+ MPH. PEA SIZE HAIL WAS ALSO FALLING AT THE TIME OF THE REPORT
May 15, 4:18 PM EDTTSTM WND DMGSciota, PADOWNED UTILITY ON U.S. HIGHWAY 209 BETWEEN LESH ROAD AND STATE ROAD 0033. TIME APPROXIMATED FROM RADAR.
May 15, 4:25 PM EDTTSTM WND DMGMount Pocono, PASEVERAL ROADS CLOSED AND POWER LINES DOWN.

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.

IssuedProductOfficeLasted
May 15, 1:46 PM EDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.3 hours before the alert went out and 215 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2018-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2018-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
909 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
153 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

762 
WUUS51 KPHI 151920
SVRPHI
PAC025-089-152015-
/O.NEW.KPHI.SV.W.0014.180515T1920Z-180515T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
320 PM EDT TUE MAY 15 2018

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Carbon County in northeastern Pennsylvania...
  Monroe County in northeastern Pennsylvania...

* Until 415 PM EDT.

* At 320 PM EDT, severe thunderstorms were located along a line 
  extending from near Old Forge to near Shumans, moving east at 65 
  mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Lehighton, Mount Pocono, East Stroudsburg, Tobyhanna, Palmerton,
  Jim Thorpe, Nesquehoning, Wind Gap, Weatherly, Stormville, Werry
  Lake, Pocono Pines, Lake Harmony, Skytop, Tannersville, Long Pond,
  Kresgeville, Sun Valley, Reeders and Beltzville State Park.

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.

&&

LAT...LON 4115 7515 4114 7509 4108 7503 4109 7497
      4099 7513 4095 7515 4093 7522 4086 7529
      4083 7538 4078 7567 4073 7576 4091 7599
      4101 7573 4105 7577 4109 7577 4113 7569
      4112 7564 4123 7554 4125 7513
TIME...MOT...LOC 1920Z 251DEG 76KT 4140 7573 4088 7631 

HAIL...1.00IN
WIND...70MPH
 
$$

po
1 follow-up statement
554 
WWUS51 KPHI 151953
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
353 PM EDT TUE MAY 15 2018

PAC025-089-152015-
/O.CON.KPHI.SV.W.0014.000000T0000Z-180515T2015Z/
Carbon PA-Monroe PA-
353 PM EDT TUE MAY 15 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR CARBON AND MONROE COUNTIES...

At 352 PM EDT, severe thunderstorms were located along a line
extending from near Pecks Pond to near Palmerton, moving east at 60
mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Lehighton, Mount Pocono, East Stroudsburg, Tobyhanna, Palmerton, Jim
Thorpe, Nesquehoning, Wind Gap, Weatherly, Stormville, Werry Lake,
Pocono Pines, Lake Harmony, Skytop, Tannersville, Long Pond,
Kresgeville, Sun Valley, Reeders and Beltzville State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of 
a building. Nickle sized hail has been reported from these storms 
near Albrightsville. 

&&

LAT...LON 4115 7515 4114 7509 4108 7503 4109 7497
      4099 7513 4095 7515 4093 7522 4086 7529
      4083 7538 4078 7567 4073 7576 4091 7599
      4101 7573 4104 7569 4107 7567 4109 7564
      4112 7564 4121 7554 4125 7513
TIME...MOT...LOC 1952Z 285DEG 54KT 4135 7506 4083 7565 

HAIL...1.00IN
WIND...70MPH
 
$$

Po

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 3:40 AM EDTFlash Flood WatchPHIBerks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more21 hr
May 15, 2:49 PM EDTSpecial Weather StatementPHIBerks, Carbon, Lehigh, Monroe, Northampton56 min
May 15, 3:46 PM EDTSevere Thunderstorm WarningPHIBerks, Lehigh, Northampton74 min
May 15, 4:12 PM EDTSevere Thunderstorm WarningPHICarbon, Monroe33 min
May 15, 4:24 PM EDTSpecial Weather StatementPHIBerks51 min
May 15, 4:26 PM EDTTornado WarningPHIBerks, Bucks, Lehigh, Montgomery, Northampton19 min
May 15, 4:41 PM EDTSevere Thunderstorm WarningPHIBerks, Bucks, Chester, Lehigh, Montgomery, Northampton64 min
May 15, 5:12 PM EDTSevere Thunderstorm WarningPHIChester63 min
May 15, 5:14 PM EDTAreal Flood AdvisoryPHIBerks, Chester, Montgomery2 hr
May 15, 5:22 PM EDTSevere Thunderstorm WarningPHIBucks, Chester, Delaware, Montgomery, Philadelphia38 min
May 15, 5:31 PM EDTAreal Flood AdvisoryPHIBucks, Lehigh, Montgomery3 hr
May 15, 5:35 PM EDTAreal Flood AdvisoryPHIBucks, Chester, Delaware, Montgomery, Philadelphia4 hr
May 15, 5:38 PM EDTSevere Thunderstorm WarningPHIDelaware, Philadelphia67 min
May 15, 5:53 PM EDTSevere Thunderstorm WarningPHIBucks, Chester, Delaware, Montgomery, Philadelphia52 min
May 15, 6:10 PM EDTAreal Flood AdvisoryPHIPhiladelphia4 hr
May 15, 6:15 PM EDTSevere Thunderstorm WarningPHIChester60 min
May 15, 6:35 PM EDTSevere Thunderstorm WarningPHIChester40 min
May 15, 6:58 PM EDTAreal Flood AdvisoryPHIChester4 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.