Alert archive / New Jersey / Mesoscale Discussions in 2011

Mesoscale Discussion 1157

June 9, 20115 states

The Storm Prediction Center issued this mesoscale discussion at Jun 9, 2011, 4:17 PM EDT for 5 states. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued
Jun 9, 2011, 4:17 PM EDT (20:17 UTC)
Expired
Jun 9, 2011, 5:45 PM EDT
In force
88 min
Issued by
the Storm Prediction Center
All 31 counties

Essex County, MA, Middlesex County, MA, Norfolk County, MA, Suffolk County, MA, Worcester County, MA, Rockingham County, NH, Strafford County, NH, 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, Bronx County, NY, Dutchess County, NY, Kings County, NY, Nassau County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Queens County, NY, Richmond County, NY, Rockland County, NY, Westchester County, NY, Kent County, RI, Providence County, RI

The radar

The Brookhaven radar (KOKX), 85 km from the middle of the area, began a volume at 20:17 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, 8.3 hours before the alert went out and 85 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 2011-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1610 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 2011-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
1610 J/kg
Mixed-layer CIN
-193 J/kg
Mixed-layer LCL
1424 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

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
Jun 8, 8:31 PM EDTSevere Thunderstorm WatchSPCLower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region2 hr
Jun 9, 11:33 AM EDTMesoscale DiscussionSPC57 min
Jun 9, 12:06 PM EDTSevere Thunderstorm WatchSPCNorthwest Hills Planning Region8 hr
Jun 9, 1:45 PM EDTMesoscale DiscussionSPC90 min
Jun 9, 2:34 PM EDTSevere Thunderstorm WatchSPCGreater Bridgeport Planning Region, Capitol Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region, Northeastern Connecticut Planning Region7 hr
Jun 9, 7:17 PM EDTMesoscale DiscussionSPC58 min
Jun 9, 3:18 PM EDTMesoscale DiscussionSPCBerkshire, Franklin87 min
Jun 8, 8:36 PM EDTMesoscale DiscussionSPCCayuga, Fulton, Hamilton, Herkimer, Jefferson, Lewis and 6 more84 min
Jun 8, 8:57 PM EDTSevere Thunderstorm WatchSPCCayuga, Fulton, Hamilton, Herkimer, Jefferson, Lewis and 9 more3 hr
Jun 9, 3:29 AM EDTMesoscale DiscussionSPCAllegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 10 more2 hr
Jun 9, 3:56 AM EDTSevere Thunderstorm WatchSPCAllegany, Cattaraugus, Cayuga, Chautauqua, Chemung, Erie and 14 more6 hr
Jun 9, 8:13 AM EDTMesoscale DiscussionSPCAllegany, Cattaraugus, Cayuga, Chautauqua, Chemung, Erie and 12 more2 hr
Jun 9, 10:36 AM EDTMesoscale DiscussionSPCAlbany, Allegany, Broome, Cattaraugus, Cayuga, Chemung and 30 more84 min

Nearby

Mesoscale Discussions in New Jersey, 2011Mesoscale Discussions in New York, 2011Mesoscale Discussions in Connecticut, 2011Every mesoscale discussion in 2011

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.