Alert archive / New York / Mesoscale Discussions in 2008

Mesoscale Discussion 2064

August 10, 20088 states

The Storm Prediction Center issued this mesoscale discussion at Aug 10, 2008, 1:05 PM EDT for 8 states. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued
Aug 10, 2008, 1:05 PM EDT (17:05 UTC)
Expired
Aug 10, 2008, 2:30 PM EDT
In force
85 min
Issued by
the Storm Prediction Center
All 69 counties

Kent County, DE, New Castle County, DE, Sussex County, DE, Berkshire County, MA, Caroline County, MD, Cecil County, MD, Harford County, MD, Kent County, MD, Queen Anne's County, MD, Wicomico County, MD, Worcester County, MD, Atlantic County, NJ, Bergen County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Essex County, NJ, Gloucester County, NJ, Hudson County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Passaic County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Albany County, NY, Bronx County, NY, Columbia County, NY, Dutchess County, NY, Fulton County, NY, Greene County, NY, Kings County, NY, Montgomery County, NY, Nassau County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Queens County, NY, Rensselaer County, NY, Richmond County, NY, Rockland County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Sullivan County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Westchester County, NY, Berks County, PA, Bucks County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA, Pike County, PA, Accomack County, VA, Bennington County, VT, Rutland County, VT

The radar

The Philadelphia radar (KDIX), 78 km from the middle of the area, began a volume at 17:08 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, 5.1 hours before the alert went out and 166 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 2008-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 227 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 2008-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
227 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
1366 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
14 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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
Aug 10, 10:27 AM EDTMesoscale DiscussionSPC33 min
Aug 10, 10:46 AM EDTSevere Thunderstorm WatchSPCGreater Bridgeport Planning Region, Northwest Hills Planning Region, Naugatuck Valley Planning Region10 hr
Aug 10, 1:36 PM EDTSevere Thunderstorm WatchSPCAnne Arundel, Baltimore, Calvert, Carroll, Charles, Dorchester and 11 more7 hr
Aug 10, 4:06 PM EDTMesoscale DiscussionSPCCarroll, Frederick, Montgomery, Washington84 min
Aug 10, 1:56 PM EDTSevere Thunderstorm WatchSPCBroome, Chenango, Cortland, Delaware, Madison, Oneida and 3 more6 hr

Nearby

Mesoscale Discussions in New York, 2008Mesoscale Discussions in New Jersey, 2008Mesoscale Discussions in Pennsylvania, 2008Every mesoscale discussion in 2008

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.