Alert archive / New Hampshire / Mesoscale Discussions in 2003

Mesoscale Discussion 1557

June 30, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Jun 30, 2003, 11:35 AM EDT for 4 states. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: Jun 30, 2003, 11:35 AM EDT (15:35 UTC)
Expired: Jun 30, 2003, 1:00 PM EDT
In force: 85 min
Issued by: the Storm Prediction Center

Counties Franklin County, MA, Hampshire County, MA, Worcester County, MA, Androscoggin County, ME, Franklin County, ME, Oxford County, ME, Somerset County, ME, Belknap County, NH, Carroll County, NH, Cheshire County, NH, Coos County, NH, Grafton County, NH, Hillsborough County, NH, Merrimack County, NH, Rockingham County, NH, Strafford County, NH, Sullivan County, NH, Windham County, VT

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 3.6 hours before the alert went out and 88 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: 350 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 1072 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 43 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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Nearby

Mesoscale Discussions in New Hampshire, 2003 Mesoscale Discussions in Maine, 2003 Mesoscale Discussions in Massachusetts, 2003 Every mesoscale discussion in 2003

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.