Alert archive / New Jersey / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

June 9, 2021Hunterdon County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Jun 9, 2021, 3:51 PM EDT for Hunterdon County, New Jersey. It was in force for 24 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
Jun 9, 2021, 3:51 PM EDT (19:51 UTC)
Expired
Jun 9, 2021, 4:15 PM EDT
In force
24 min
Issued by
NWS Philadelphia/Mount Holly

County Hunterdon County, NJ

The radar

The Philadelphia radar (KDIX), 69 km from the middle of the area, began a volume at 19:51 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, 7.9 hours before the alert went out and 181 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 12:00Z on 2021-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 556 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2021-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.1939Sfc1 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
556 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
927 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

023 
WWUS81 KPHI 091951
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
351 PM EDT Wed Jun 9 2021

NJZ009-010-PAZ105-106-092015-
Hunterdon-Somerset-Lower Bucks-Upper Bucks-
351 PM EDT Wed Jun 9 2021

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL HUNTERDON...WEST CENTRAL
SOMERSET AND NORTH CENTRAL BUCKS COUNTIES...

At 351 PM EDT, a strong thunderstorm was located near Frenchtown, or
15 miles southeast of Easton, moving southeast at 10 mph.

Wind gusts up to 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Flemington, Clinton, New Hope, Frenchtown, Milford, Stockton,
Cloverhill, Erwinna, Sergeantsville, Sand Brook and Lambertville.

This includes Interstate 78 in New Jersey between mile markers 13 and
16.
 
If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4034 7492 4034 7494 4033 7493 4030 7496
      4054 7512 4065 7496 4057 7468
TIME...MOT...LOC 1951Z 313DEG 9KT 4056 7498 

$$

Davis

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 8:40 PM EDTSpecial Marine WarningPHI65 min
Jun 9, 1:46 PM EDTSpecial Marine WarningPHI59 min
Jun 9, 1:48 PM EDTSpecial Weather StatementPHISalem27 min
Jun 9, 1:52 PM EDTSpecial Weather StatementPHIAtlantic23 min
Jun 9, 2:07 PM EDTSevere Thunderstorm WarningPHIGloucester, Salem23 min
Jun 9, 2:14 PM EDTSpecial Weather StatementPHISalem31 min
Jun 9, 2:21 PM EDTFlash Flood WarningPHICumberland, Gloucester, Salem73 min
Jun 9, 2:47 PM EDTSpecial Marine WarningPHI58 min
Jun 9, 3:32 PM EDTSpecial Weather StatementPHIBurlington28 min
Jun 9, 3:48 PM EDTSpecial Marine WarningPHI57 min
Jun 9, 3:49 PM EDTFlash Flood WarningPHIBurlington3 hr
Jun 9, 5:32 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Monmouth28 min
Jun 9, 6:46 PM EDTSpecial Marine WarningPHI59 min
Jun 9, 6:50 PM EDTAreal Flood AdvisoryPHIMonmouth, Ocean87 min
Jun 9, 7:42 PM EDTSpecial Marine WarningPHI63 min
Jun 9, 4:54 PM EDTFlash Flood WarningPHIBerks, Montgomery112 min
Jun 9, 5:27 PM EDTSevere Thunderstorm WarningPHIBerks, Lehigh, Northampton23 min
Jun 8, 8:15 PM EDTSpecial Weather StatementPHISussex45 min
Jun 9, 7:54 AM EDTRiver Flood WarningPHINew Castle5 hr
Jun 9, 1:35 PM EDTSpecial Weather StatementPHINew Castle25 min
Jun 9, 2:26 PM EDTSevere Thunderstorm WarningPHIKent64 min
Jun 9, 2:28 PM EDTSevere Thunderstorm WarningPHISussex62 min
Jun 9, 3:11 PM EDTSevere Thunderstorm WarningPHISussex64 min
Jun 9, 3:24 PM EDTAreal Flood AdvisoryPHISussex3 hr
Jun 9, 4:32 PM EDTAreal Flood AdvisoryPHISussex108 min
Jun 9, 4:37 PM EDTSevere Thunderstorm WarningPHIKent, Sussex27 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.