Alert archive / New Jersey / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

April 29, 2021Monmouth County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Apr 29, 2021, 8:55 PM EDT for Monmouth County, New Jersey. It was in force for 35 min. 1 report 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
Apr 29, 2021, 8:55 PM EDT (00:55 UTC)
Expired
Apr 29, 2021, 9:30 PM EDT
In force
35 min
Issued by
NWS Philadelphia/Mount Holly

County Monmouth County, NJ

The radar

The Philadelphia radar (KDIX), 39 km from the middle of the area, began a volume at 00:54 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
Apr 29, 9:00 PM EDTTSTM WND GST 453 W Jackson, NJMESONET STATION EW9580 JACKSON.

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 0.9 hours before the alert went out and 129 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 00:00Z on 2021-04-30Temperature 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 00:00Z on 2021-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 385 square meters per square second.19395878Sfc1 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
860 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
385 m²/s²
0-3 km storm-relative helicity
528 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

036 
WWUS81 KPHI 300055
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
855 PM EDT Thu Apr 29 2021

NJZ013-014-020-300130-
Eastern Monmouth-Ocean-Western Monmouth-
855 PM EDT Thu Apr 29 2021

...A LINE OF STRONG SHOWERS AND EMBEDDED THUNDER WILL AFFECT NORTH 
CENTRAL OCEAN AND SOUTHEASTERN MONMOUTH COUNTIES...

At 854 PM EDT, radar indicated strong showers and embedded thunder 
was located along a line extending from Adelphia to near Vista 
Center to near Freewood Acres to Jackson. Movement was east at 55 
mph.

Wind gusts up to 40 mph are possible with these showers and storms.

Locations impacted include...
Long Branch, Asbury Park, Lakewood, Jackson, Howell, Tinton Falls,
Red Bank, Manasquan, Farmingdale, Allenwood, East Freehold, Jacksons
Mills, West Freehold, Adelphia, Vista Center, Elberon, Ramtown,
Collingwood Park, Freewood Acres and Lincroft.

This includes the following highways...
 Interstate 195 in New Jersey between mile markers 22 and 34.
 Garden State Parkway between mile markers 93 and 111.

Heavy rainfall is also occurring, and may cause localized flooding. 
Do not drive your vehicle through flooded roadways.

LAT...LON 4041 7396 4014 7396 4005 7433 4010 7435
      4027 7429
TIME...MOT...LOC 0054Z 248DEG 47KT 4024 7424 4017 7428 4013 7426 4007
7428

$$

Gorse

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 8:05 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester, Monmouth, Ocean34 min
Apr 30, 12:05 AM EDTStorm WarningPHI24 hr

Nearby

Special Weather Statements in New Jersey, 2021Every special weather statement in 2021

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.