Alert archive / New Jersey / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 308

May 18, 20004 states

The Storm Prediction Center issued this severe thunderstorm watch at May 18, 2000, 6:00 PM EDT for 4 states. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
May 18, 2000, 6:00 PM EDT (22:00 UTC)
Expired
May 18, 2000, 10:00 PM EDT
In force
4 hr
Issued by
the Storm Prediction Center
All 23 counties

Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Hunterdon County, NJ, Morris County, NJ, Passaic County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Bronx County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Putnam County, NY, Queens County, NY, Richmond County, NY, Rockland County, NY, Suffolk County, NY, Westchester County, NY, Lehigh County, PA, Northampton County, PA, Washington County, RI

The radar

The Philadelphia radar (KDIX), 106 km from the middle of the area, began a volume at 22:02 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.

Warnings issued inside it

14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 18, 6:06 PM EDTSevere Thunderstorm WarningPHIMorris, Sussex, Warren39 min
May 18, 6:20 PM EDTSevere Thunderstorm WarningOKXBergen, Passaic40 min
May 18, 6:45 PM EDTSevere Thunderstorm WarningPHIHunterdon, Morris, Somerset, Warren45 min
May 18, 6:51 PM EDTSevere Thunderstorm WarningOKXNassau, Suffolk24 min
May 18, 6:51 PM EDTSevere Thunderstorm WarningOKXQueens24 min
May 18, 6:51 PM EDTSevere Thunderstorm WarningOKXBronx24 min
May 18, 6:55 PM EDTSevere Thunderstorm WarningOKXEssex, Hudson, Union35 min
May 18, 6:55 PM EDTSevere Thunderstorm WarningOKXRichmond35 min
May 18, 6:55 PM EDTSevere Thunderstorm WarningOKXKings35 min
May 18, 6:55 PM EDTSevere Thunderstorm WarningOKXNew York35 min
May 18, 7:06 PM EDTSevere Thunderstorm WarningOKXSuffolk54 min
May 18, 7:30 PM EDTSevere Thunderstorm WarningPHIHunterdon, Middlesex, Somerset30 min
May 18, 9:17 PM EDTFlash Flood WarningOKXUnion2 hr
May 18, 9:59 PM EDTSevere Thunderstorm WarningPHILehigh31 min

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.0 hours before the alert went out and 117 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 2000-05-18Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2000-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 131 square meters per square second.193958Sfc1 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
977 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
131 m²/s²
0-3 km storm-relative helicity
245 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 18, 5:00 PM EDTSevere Thunderstorm WatchSPC5 hr
May 18, 3:15 PM EDTSevere Thunderstorm WatchSPCSussex5 hr

Nearby

Severe Thunderstorm Watches in New Jersey, 2000Severe Thunderstorm Watches in New York, 2000Severe Thunderstorm Watches in Connecticut, 2000Every severe thunderstorm watch in 2000

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.