Alert archive / New Jersey / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 82, NWS Philadelphia/Mount Holly

July 1, 2001Monmouth County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 1, 2001, 5:26 PM EDT for Monmouth County, New Jersey. It was in force for 49 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 1, 2001, 5:26 PM EDT (21:26 UTC)
Expired: Jul 1, 2001, 6:15 PM EDT
In force: 49 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

County Monmouth County, NJ

The radar

The Philadelphia radar (KDIX), 44 km from the middle of the area, began a volume at 21:30 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

Time	Report	Where
Jul 1, 5:35 PM EDT	Hail 1.75	Holmdel, NJ
Jul 1, 5:35 PM EDT	Thunderstorm Wind 50 M	Keansburg, NJ
Jul 1, 5:45 PM EDT	Thunderstorm Wind 56 E	Englishtown, NJ

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.4 hours before the alert went out and 127 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: 301 J/kg
Mixed-layer CIN: -117 J/kg
Mixed-layer LCL: 1284 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 132 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

841 
WUUS51 KPHI 012128 CCA
SVRPHI
NJC025-012215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
526 PM EDT SUN JUL 1 2001

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MONMOUTH COUNTY IN CENTRAL NEW JERSEY.

* UNTIL 615 PM EDT.

* AT 525 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM...JUST WEST OF MANALAPAN...
  MOVING EAST RAPIDLY AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HIGHLANDS...RED BANK...LONG BRANCH AT 535 PM.

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS AND LARGE HAIL.
IN MILLTOWN AND EAST BRUNSWICK TREES HAVE BEEN KNOCKED DOWN.

FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER
RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE
TELEVISION OUTLET.
 

$$
CORRECTED TO CHANGE NORTHERN TO ALL AND ADD SPOTTER REPORT.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 10:31 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex	44 min
Jun 30, 11:50 PM EDT	Severe Thunderstorm Warning	PHI	Somerset	25 min
Jun 30, 11:56 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex	34 min
Jul 1, 2:44 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	61 min
Jul 1, 3:16 PM EDT	Severe Thunderstorm Warning	PHI	Somerset	44 min
Jul 1, 3:45 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth	45 min
Jul 1, 4:06 PM EDT	Severe Thunderstorm Warning	PHI	Sussex, Warren	39 min
Jul 1, 4:23 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris	52 min
Jul 1, 4:59 PM EDT	Severe Thunderstorm Warning	PHI	Somerset	46 min
Jul 1, 5:15 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex	45 min
Jul 1, 5:39 PM EDT	Tornado Warning	PHI	Monmouth	36 min
Jul 1, 5:59 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	46 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2001 Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.