Alert archive / New York / Mesoscale Discussions in 2004

Mesoscale Discussion 867

May 24, 200411 counties in New Jersey; 22 counties in New York; 17 counties in Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at May 24, 2004, 3:00 PM EDT for 11 counties in New Jersey; 22 counties in New York; 17 counties in Pennsylvania. It was in force for 90 min.

The area

The outline as issued.

The facts

Issued
May 24, 2004, 3:00 PM EDT (19:00 UTC)
Expired
May 24, 2004, 4:30 PM EDT
In force
90 min
Issued by
the Storm Prediction Center
All 50 counties

Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Hunterdon County, NJ, Middlesex County, NJ, Morris County, NJ, Passaic County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Albany County, NY, Broome County, NY, Chenango County, NY, Cortland County, NY, Delaware County, NY, Fulton County, NY, Greene County, NY, Herkimer County, NY, Kings County, NY, Madison County, NY, Montgomery County, NY, New York County, NY, Oneida County, NY, Onondaga County, NY, Orange County, NY, Otsego County, NY, Richmond County, NY, Rockland County, NY, Schoharie County, NY, Sullivan County, NY, Tioga County, NY, Ulster County, NY, Berks County, PA, Bucks County, PA, Carbon County, PA, Columbia County, PA, Lackawanna County, PA, Lehigh County, PA, Luzerne County, PA, Monroe County, PA, Montour County, PA, Northampton County, PA, Northumberland County, PA, Pike County, PA, Schuylkill County, PA, Sullivan County, PA, Susquehanna County, PA, Wayne County, PA, Wyoming County, PA

The radar

The Binghamton radar (KBGM), 88 km from the middle of the area, began a volume at 19:02 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.

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.0 hours before the alert went out and 215 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 2004-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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 2004-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 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
2 J/kg
Mixed-layer CIN
-444 J/kg
Mixed-layer LCL
721 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.6

Open this sounding in Storm Lab

The text

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

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 24, 10:03 AM EDTMesoscale DiscussionSPCBergen, Essex, Hunterdon, Morris, Passaic, Somerset and 3 more117 min
May 24, 11:00 AM EDTSevere Thunderstorm WatchSPCBergen, Essex, Hudson, Morris, Passaic, Sussex and 2 more5 hr
May 24, 4:55 PM EDTSevere Thunderstorm WatchSPCBergen, Burlington, Camden, Essex, Gloucester, Hunterdon and 8 more4 hr
May 24, 5:43 PM EDTMesoscale DiscussionSPCBergen, Burlington, Camden, Essex, Gloucester, Hunterdon and 8 more47 min
May 24, 7:25 PM EDTMesoscale DiscussionSPCBergen, Essex, Hunterdon, Mercer, Middlesex, Morris and 5 more95 min
May 23, 11:02 PM EDTMesoscale DiscussionSPCCayuga, Essex, Fulton, Hamilton, Herkimer, Lewis and 8 more3 hr
May 24, 12:24 PM EDTMesoscale DiscussionSPCAllegany, Broome, Chemung, Chenango, Cortland, Ontario and 6 more2 hr
May 24, 12:40 PM EDTSevere Thunderstorm WatchSPCAllegany, Broome, Cattaraugus, Chemung, Chenango, Cortland and 11 more4 hr
May 24, 5:45 PM EDTSevere Thunderstorm WatchSPCRensselaer5 hr
May 24, 12:30 AM EDTSevere Thunderstorm WatchSPCAllegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 10 more6 hr
May 24, 2:09 AM EDTMesoscale DiscussionSPCGreene, Washington2 hr
May 24, 4:55 AM EDTMesoscale DiscussionSPCAllegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 10 more95 min

Nearby

Mesoscale Discussions in New York, 2004Mesoscale Discussions in Pennsylvania, 2004Mesoscale Discussions in New Jersey, 2004Every mesoscale discussion in 2004

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.