Alert archive / New Jersey / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 99, NWS Philadelphia/Mount Holly

September 25, 2018Monmouth County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 25, 2018, 7:21 PM EDT for Monmouth County, New Jersey. It was in force for 17 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 25, 2018, 7:21 PM EDT (23:21 UTC)
Expired: Sep 25, 2018, 7:38 PM EDT
In force: 17 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Monmouth County, NJ

The radar

The Philadelphia radar (KDIX), 40 km from the middle of the area, began a volume at 23:20 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 11.4 hours before the alert went out and 132 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: 457 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 413 m²/s²
0-3 km storm-relative helicity: 577 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

390 
WUUS51 KPHI 252321
SVRPHI
NJC025-260000-
/O.NEW.KPHI.SV.W.0099.180925T2321Z-180926T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
721 PM EDT TUE SEP 25 2018

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northeastern Monmouth County in central New Jersey...

* Until 800 PM EDT.

* At 720 PM EDT, a severe thunderstorm was located over East
  Freehold, or 14 miles west of Asbury Park, moving northeast at 15
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Long Branch, Middletown, Marlboro, Tinton Falls, Holmdel, Red Bank,
  Matawan, Adelphia, Yorketown, East Freehold, Robertsville,
  Lincroft, Morganville, West Freehold, Eatontown, Freehold, West
  Long Branch, Little Silver, Oceanport and Shrewsbury.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4018 7430 4030 7438 4045 7417 4030 7397
TIME...MOT...LOC 2320Z 236DEG 12KT 4029 7428 

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

Fitzsimmons

1 follow-up statement

656 
WWUS51 KPHI 252338
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
738 PM EDT TUE SEP 25 2018

NJC025-252348-
/O.CAN.KPHI.SV.W.0099.000000T0000Z-180926T0000Z/
Monmouth NJ-
738 PM EDT TUE SEP 25 2018

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MONMOUTH COUNTY
IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 4018 7430 4030 7438 4045 7417 4030 7397
TIME...MOT...LOC 2332Z 236DEG 12KT 4032 7421 

$$

Fitzsimmons

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 25, 12:07 PM EDT	Special Weather Statement	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	23 min
Sep 25, 12:33 PM EDT	Rip Current Statement	PHI	Atlantic, Cape May, Monmouth, Ocean	8 hr
Sep 25, 12:47 PM EDT	Special Weather Statement	PHI	Morris, Somerset, Sussex	43 min
Sep 25, 2:30 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset	3 hr
Sep 25, 4:03 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 1 more	3 hr
Sep 25, 4:19 PM EDT	Flash Flood Warning	PHI	Camden	4 hr
Sep 25, 5:14 PM EDT	Flash Flood Warning	PHI	Mercer, Middlesex, Somerset	4 hr
Sep 25, 5:35 PM EDT	Flash Flood Warning	PHI	Burlington, Camden, Gloucester, Mercer	4 hr
Sep 25, 6:03 PM EDT	Flash Flood Warning	PHI	Mercer, Middlesex, Monmouth	3 hr
Sep 25, 6:39 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Gloucester, Ocean	3 hr
Sep 25, 6:47 PM EDT	Tornado Warning	PHI	Burlington	32 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2018 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.