Severe Thunderstorm Warning 137, NWS Philadelphia/Mount Holly

Issued

Jul 6, 2021, 9:04 PM EDT (01:04 UTC)

Expired

Jul 6, 2021, 9:45 PM EDT

In force

41 min

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Hail

1.0 in

Wind

60.0 mph

Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Somerset County, NJ, Bucks County, PA

The Philadelphia radar (KDIX), 71 km from the middle of the area, began a volume at 01:05 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

674 
WUUS51 KPHI 070104
SVRPHI
NJC019-021-023-035-PAC017-070145-
/O.NEW.KPHI.SV.W.0137.210707T0104Z-210707T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
904 PM EDT Tue Jul 6 2021

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Hunterdon County in northwestern New Jersey...
  Northern Mercer County in central New Jersey...
  Somerset County in northern New Jersey...
  Northwestern Middlesex County in northern New Jersey...
  North central Bucks County in southeastern Pennsylvania...

* Until 945 PM EDT.

* At 904 PM EDT, a severe thunderstorm was located near Sand Brook, 
  or 17 miles southeast of Easton, moving east at 35 mph. This storm 
  has a history of producing 60 mph wind gusts in the Lehigh Valley.

  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...
  Somerville, Somerset, Bridgewater, South Brunswick, Middlesex,
  Princeton, Bound Brook, Manville, Flemington, High Bridge, Clinton,
  Hopewell, Frenchtown, Lebanon, Rocky Hill, Millstone, Skillman,
  Flagtown, Kingston and Plainsboro Center.

This includes the following highways...
 Interstate 78 in New Jersey between mile markers 12 and 38.
 Interstate 287 in New Jersey between mile markers 7 and 22.

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 4060 7445 4060 7443 4026 7460 4049 7514
      4069 7496 4064 7442 4063 7442
TIME...MOT...LOC 0104Z 286DEG 30KT 4052 7497 

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

Staarmann

792 
WWUS51 KPHI 070132
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
932 PM EDT Tue Jul 6 2021

PAC017-070141-
/O.CAN.KPHI.SV.W.0137.000000T0000Z-210707T0145Z/
Bucks PA-
932 PM EDT Tue Jul 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL BUCKS COUNTY IS
CANCELLED...

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

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
central, northern and northwestern New Jersey.

LAT...LON 4060 7445 4060 7443 4026 7460 4040 7492
      4059 7480 4067 7472 4064 7442 4063 7442
TIME...MOT...LOC 0131Z 285DEG 31KT 4063 7463 4042 7469 4033 7486 

$$

NJC019-021-023-035-070145-
/O.CON.KPHI.SV.W.0137.000000T0000Z-210707T0145Z/
Hunterdon NJ-Mercer NJ-Somerset NJ-Middlesex NJ-
932 PM EDT Tue Jul 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT
FOR SOUTHEASTERN HUNTERDON...NORTHERN MERCER...SOMERSET AND
NORTHWESTERN MIDDLESEX COUNTIES...

At 931 PM EDT, severe thunderstorms were located along a line
extending from near Bridgewater to Skillman to near Washington
Crossing, moving east at 35 mph.

HAZARD...60 mph wind gusts and half dollar 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...
Somerville, Somerset, Bridgewater, South Brunswick, Middlesex,
Princeton, Bound Brook, Manville, Flemington, Hopewell, Rocky Hill,
Millstone, Skillman, Flagtown, Kingston, Plainsboro Center, Belle
Mead, Martinsville, Kendall Park and Cloverhill.

This includes the following highways...
 Interstate 78 in New Jersey between mile markers 26 and 38.
 Interstate 287 in New Jersey between mile markers 7 and 22.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms are producing large hail. SEEK SHELTER NOW inside a
sturdy structure and stay away from windows.

Frequent cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

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

&&

LAT...LON 4060 7445 4060 7443 4026 7460 4040 7492
      4059 7480 4067 7472 4064 7442 4063 7442
TIME...MOT...LOC 0131Z 285DEG 31KT 4063 7463 4042 7469 4033 7486 

HAIL...1.25IN
WIND...60MPH
 
$$

Staarmann

Severe Thunderstorm Warnings in New Jersey, 2021Severe Thunderstorm Warnings in Pennsylvania, 2021Every severe thunderstorm warning in 2021

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.