Alert archive / Rhode Island / Mesoscale Discussions in 2008

Mesoscale Discussion 357

March 5, 2008Barnstable County, Bristol County, Dukes County, Massachusetts; Suffolk County, New York; 4 counties in Rhode Island

The Storm Prediction Center issued this mesoscale discussion at Mar 5, 2008, 5:39 AM EST for Barnstable County, Bristol County, Dukes County, Massachusetts; Suffolk County, New York; 4 counties in Rhode Island. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: Mar 5, 2008, 5:39 AM EST (10:39 UTC)
Expired: Mar 5, 2008, 7:15 AM EST
In force: 96 min
Issued by: the Storm Prediction Center

Counties Barnstable County, MA, Bristol County, MA, Dukes County, MA, Suffolk County, NY, Bristol County, RI, Kent County, RI, Newport County, RI, Washington County, RI

The radar

The Brookhaven radar (KOKX), 82 km from the middle of the area, began a volume at 10:38 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 00:00Z, 10.7 hours before the alert went out and 82 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 516 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 281 m²/s²
0-3 km storm-relative helicity: 288 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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.

Issued	Product	Office	Counties	Lasted
Mar 5, 3:01 AM EST	Severe Thunderstorm Watch	SPC	Greater Bridgeport Planning Region	3 hr
Mar 5, 2:32 AM EST	Mesoscale Discussion	SPC	Bronx, Kings, Nassau, New York, Queens, Richmond	88 min

Nearby

Mesoscale Discussions in Rhode Island, 2008 Mesoscale Discussions in Massachusetts, 2008 Mesoscale Discussions in Connecticut, 2008 Every 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.