Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 403, NWS Philadelphia/Mount Holly

October 31, 2019Monroe County, Northampton County, Pennsylvania; Sussex County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Oct 31, 2019, 10:43 PM EDT for Monroe County, Northampton County, Pennsylvania; Sussex County, Warren County, New Jersey. It was in force for 77 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: Oct 31, 2019, 10:43 PM EDT (02:43 UTC)
Expired: Nov 1, 2019, 12:00 AM EDT
In force: 77 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Sussex County, NJ, Warren County, NJ, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 120 km from the middle of the area, began a volume at 02:44 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
Oct 31, 11:19 PM EDT	TSTM WND DMG	1 E Phillipsburg, NJ	SEVERAL REPORTS OF DOWNED TREES AND POWER LINES IN PHILLIPSBURG AND LOPATCONG TWP. TIME ESTIMATED FROM RADAR.
Oct 31, 11:29 PM EDT	TSTM WND DMG	Pohatcong Twp, NJ	TREES AND WIRES DOWN ON PINCHERS POINT ROAD, RIVER ROAD, EDGE ROAD, AND STILL VALLEY ROAD. TIME ESTIMATED FROM RADAR.
Oct 31, 11:37 PM EDT	TSTM WND DMG	Oxford, NJ	SEVERAL REPORTS OF DOWNED TREES IN OXFORD TWP, INCLUDING ON JONESTOWN ROAD AND WASHINGTON AVENUE. TIME ESTIMATED FROM RADAR.
Oct 31, 11:49 PM EDT	TSTM WND DMG	Allamuchy-Panther Valle, NJ	SEVERAL REPORTS OF DOWNED TREES AND POWER LINES IN ALLAMUCHY TWP AND HACKETTSTOWN. TIME ESTIMATED FROM RADAR.
Oct 31, 11:50 PM EDT	TSTM WND DMG	1 Nnw Hackettstown, NJ	LARGE TREE DOWN ON POWER LINES ON HAMILTON DR. TIME ESTIMATED FROM RADAR.
Oct 31, 11:54 PM EDT	TSTM WND DMG	Hopatcong, NJ	PHOTO SHOWING A LARGE TREE DOWN ON POWER LINES. REPORT INDICATES SEVERAL ADDITIONAL TREES ARE DOWN ON POWER LINES WITH SOME TRANSFORMER FIRES IN THE AREA. TIME ESTIMATED FROM RADAR.
Nov 1, 12:10 AM EDT	TSTM WND DMG	1 W Hardyston Twp, NJ	DOWNED TREE ON STATE HIGHWAY 23 SOUTH OF BEAVER LAKE ROAD. ALL LANES CLOSED. TIME ESTIMATED FROM RADAR.

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
Oct 31, 7:56 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 2.7 hours before the alert went out and 169 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: 486 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 491 m²/s²
0-3 km storm-relative helicity: 510 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

225 
WUUS51 KPHI 010243
SVRPHI
NJC037-041-PAC089-095-010400-
/O.NEW.KPHI.SV.W.0403.191101T0243Z-191101T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1043 PM EDT Thu Oct 31 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Sussex County in northwestern New Jersey...
  Warren County in northwestern New Jersey...
  East central Monroe County in northeastern Pennsylvania...
  Eastern Northampton County in eastern Pennsylvania...

* Until midnight EDT.

* At 1043 PM EDT, severe thunderstorms were located along a line
  extending from near Werry Lake to near Hellertown, moving northeast
  at 65 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Easton, Port Jervis, Newton, Montague, Bethlehem, Hopatcong, Forks,
  East Stroudsburg, Hackettstown, Wilson, Washington, Blairstown,
  Hellertown, Bangor, Mount Arlington, Franklin, Stanhope, Hamburg,
  Netcong and Belvidere.

This includes the following highways...
 Interstate 78 in New Jersey between mile markers 0 and 8.
 Interstate 80 in New Jersey between mile markers 0 and 25.
 Interstate 80 in Pennsylvania between mile markers 313 and 314.
 Interstate 78 in Pennsylvania between mile markers 68 and 76.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.

&&

LAT...LON 4120 7437 4097 7464 4092 7465 4090 7471
      4091 7476 4088 7481 4082 7483 4071 7497
      4059 7518 4060 7522 4054 7533 4055 7536
      4115 7510 4108 7503 4109 7500 4116 7490
      4128 7484 4135 7475 4136 7470
TIME...MOT...LOC 0243Z 229DEG 55KT 4111 7511 4053 7538 

HAIL...<.75IN
WIND...60MPH
 
$$

Iovino

1 follow-up statement

315 
WWUS51 KPHI 010335
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1135 PM EDT Thu Oct 31 2019

PAC089-095-010344-
/O.CAN.KPHI.SV.W.0403.000000T0000Z-191101T0400Z/
Monroe PA-Northampton PA-
1135 PM EDT Thu Oct 31 2019

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MONROE AND
EASTERN NORTHAMPTON COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4120 7437 4097 7464 4092 7465 4090 7471
      4091 7476 4088 7481 4082 7483 4071 7497
      4061 7517 4079 7512 4082 7508 4085 7510
      4086 7505 4092 7508 4103 7504 4116 7490
      4128 7484 4135 7475 4136 7470
TIME...MOT...LOC 0334Z 230DEG 44KT 4108 7489 4072 7502 

$$

NJC037-041-010400-
/O.CON.KPHI.SV.W.0403.000000T0000Z-191101T0400Z/
Sussex NJ-Warren NJ-
1135 PM EDT Thu Oct 31 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT
FOR SUSSEX AND WARREN COUNTIES...

At 1134 PM EDT, severe thunderstorms were located along a line
extending from Five Points to near Pleasant Valley, moving northeast
at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Port Jervis, Newton, Montague, Hopatcong, Hackettstown, Washington,
Blairstown, Mount Arlington, Franklin, Stanhope, Hamburg, Netcong,
Belvidere, Oxford, Ogdensburg, Alpha, Sussex, Hope, Hampton and
Bloomsbury.

This includes the following highways...
 Interstate 78 in New Jersey between mile markers 3 and 7.
 Interstate 80 in New Jersey between mile markers 6 and 25.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.

&&

LAT...LON 4120 7437 4097 7464 4092 7465 4090 7471
      4091 7476 4088 7481 4082 7483 4071 7497
      4061 7517 4079 7512 4082 7508 4085 7510
      4086 7505 4092 7508 4103 7504 4116 7490
      4128 7484 4135 7475 4136 7470
TIME...MOT...LOC 0334Z 230DEG 44KT 4108 7489 4072 7502 

HAIL...<.75IN
WIND...60MPH
 
$$

Iovino

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 31, 8:11 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh	64 min
Oct 31, 8:58 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	62 min
Oct 31, 9:35 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	55 min
Oct 31, 9:41 PM EDT	Flash Flood Warning	PHI	Berks	4 hr
Oct 31, 9:56 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	4 hr
Oct 31, 9:56 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe, Northampton	64 min
Oct 31, 10:23 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Montgomery	67 min
Oct 31, 10:45 PM EDT	Areal Flood Advisory	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	4 hr
Oct 31, 11:08 PM EDT	Flash Flood Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	4 hr
Oct 31, 11:14 PM EDT	Flash Flood Warning	PHI	Carbon, Monroe, Northampton	4 hr
Oct 31, 11:15 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	60 min
Oct 31, 11:32 PM EDT	Tornado Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	14 min
Oct 31, 11:54 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	66 min
Oct 31, 11:54 PM EDT	Tornado Warning	PHI	Bucks	36 min
Nov 1, 1:43 AM EDT	Areal Flood Warning	PHI	Berks	4 hr
Nov 1, 2:28 AM EDT	River Flood Warning	PHI	Chester	4 hr
Nov 1, 3:02 AM EDT	Areal Flood Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	5 hr
Nov 1, 3:06 AM EDT	Areal Flood Warning	PHI	Carbon, Monroe, Northampton	4 hr
Nov 1, 3:31 AM EDT	Freeze Watch	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	6 hr
Nov 1, 9:12 AM EDT	Freeze Warning	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more	25 hr
Nov 1, 3:16 PM EDT	Frost Advisory	PHI	Philadelphia	19 hr
Oct 31, 11:24 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Morris, Somerset	66 min
Oct 31, 11:31 PM EDT	Special Marine Warning	PHI		89 min
Nov 1, 12:07 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Cape May, Cumberland, Monmouth, Ocean	83 min
Nov 1, 12:24 AM EDT	Special Marine Warning	PHI		96 min
Nov 1, 12:31 AM EDT	Special Marine Warning	PHI		89 min
Nov 1, 9:13 AM EDT	Small Craft Advisory	PHI		9 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2019 Severe Thunderstorm Warnings in New Jersey, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.