Severe Thunderstorm Warning 188, NWS Philadelphia/Mount Holly

Issued

Jul 17, 2021, 6:39 PM EDT (22:39 UTC)

Expired

Jul 17, 2021, 7:30 PM EDT

In force

51 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, Morris County, NJ, Somerset County, NJ, Bucks County, PA

The Philadelphia radar (KDIX), 67 km from the middle of the area, began a volume at 22:43 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.

091 
WUUS51 KPHI 172239
SVRPHI
NJC019-021-023-027-035-PAC017-172330-
/O.NEW.KPHI.SV.W.0188.210717T2239Z-210717T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
639 PM EDT Sat Jul 17 2021

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Southeastern Hunterdon County in northwestern New Jersey...
  South central Morris County in northern New Jersey...
  Northwestern Mercer County in central New Jersey...
  Somerset County in northern New Jersey...
  Northwestern Middlesex County in northern New Jersey...
  Northeastern Bucks County in southeastern Pennsylvania...

* Until 730 PM EDT.

* At 639 PM EDT, a severe thunderstorm was located over Bridgewater,
  or over Somerville, moving east at 20 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...
  Somerville, Somerset, Bridgewater, Middlesex, Princeton, Bound
  Brook, Manville, Flemington, Pennington, Peapack And Gladstone, New
  Hope, Hopewell, Far Hills, Rocky Hill, Stockton, Millstone,
  Skillman, Flagtown, Kingston and Belle Mead.

This includes the following highways...
 Interstate 78 in New Jersey between mile markers 24 and 42.
 Interstate 287 in New Jersey between mile markers 6 and 28.

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 4029 7465 4031 7484 4036 7510 4074 7468
      4069 7445 4067 7446 4066 7445 4066 7440
      4060 7446 4060 7440
TIME...MOT...LOC 2239Z 253DEG 18KT 4058 7464 

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

JEO

615 
WWUS51 KPHI 172303
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
703 PM EDT Sat Jul 17 2021

NJC019-021-023-027-035-PAC017-172330-
/O.CON.KPHI.SV.W.0188.000000T0000Z-210717T2330Z/
Hunterdon NJ-Morris NJ-Mercer NJ-Somerset NJ-Middlesex NJ-Bucks PA-
703 PM EDT Sat Jul 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR SOUTHEASTERN HUNTERDON...SOUTH CENTRAL MORRIS...NORTHWESTERN
MERCER...SOMERSET...NORTHWESTERN MIDDLESEX AND NORTHEASTERN BUCKS
COUNTIES...

At 701 PM EDT, a severe thunderstorm was located just south of 
Flemington, moving east at 20 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...
Somerville, Somerset, Bridgewater, Middlesex, Princeton, Bound Brook,
Manville, Flemington, Pennington, Peapack And Gladstone, New Hope,
Hopewell, Far Hills, Rocky Hill, Stockton, Millstone, Skillman,
Flagtown, Kingston and Belle Mead.

This includes the following highways...
 Interstate 78 in New Jersey between mile markers 24 and 42.
 Interstate 287 in New Jersey between mile markers 6 and 28.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm. 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.

&&

LAT...LON 4029 7465 4031 7484 4036 7510 4074 7468
      4069 7445 4067 7446 4066 7445 4066 7440
      4060 7446 4060 7440
TIME...MOT...LOC 2301Z 253DEG 18KT 4061 7450 

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

NC

230 
WWUS51 KPHI 172324
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
724 PM EDT Sat Jul 17 2021

NJC019-021-023-027-035-PAC017-172333-
/O.EXP.KPHI.SV.W.0188.000000T0000Z-210717T2330Z/
Hunterdon NJ-Morris NJ-Mercer NJ-Somerset NJ-Middlesex NJ-Bucks PA-
724 PM EDT Sat Jul 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HUNTERDON...SOUTH
CENTRAL MORRIS...NORTHWESTERN MERCER...SOMERSET...NORTHWESTERN
MIDDLESEX AND NORTHEASTERN BUCKS COUNTIES WILL EXPIRE AT 730 PM
EDT...
    
A new Severe Thunderstorm Warning will be issued shortly for much of 
the same area.

A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
central, northern and northwestern New Jersey...and southeastern
Pennsylvania.

LAT...LON 4029 7465 4031 7484 4036 7510 4074 7468
      4069 7445 4067 7446 4066 7445 4066 7440
      4060 7446 4060 7440
TIME...MOT...LOC 2323Z 253DEG 18KT 4064 7437 

$$

JEO

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.