Alert archive / Vermont / Mesoscale Discussions in 2007

Mesoscale Discussion 1014

June 5, 20076 states

The Storm Prediction Center issued this mesoscale discussion at Jun 5, 2007, 4:17 PM EDT for 6 states. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: Jun 5, 2007, 4:17 PM EDT (20:17 UTC)
Expired: Jun 5, 2007, 5:45 PM EDT
In force: 88 min
Issued by: the Storm Prediction Center

All 45 counties

Berkshire County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA, Androscoggin County, ME, Cumberland County, ME, Franklin County, ME, Kennebec County, ME, Oxford County, ME, York 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, Albany County, NY, Columbia County, NY, Dutchess County, NY, Greene County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Warren County, NY, Washington County, NY, Kent County, RI, Providence County, RI, Addison County, VT, Bennington County, VT, Caledonia County, VT, Chittenden County, VT, Essex County, VT, Lamoille County, VT, Orange County, VT, Orleans County, VT, Rutland County, VT, Washington County, VT, Windham County, VT, Windsor County, VT

The radar

The Portland,ME radar (KGYX), 128 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

Gray, ME (KGYX), launched 12:00Z, 8.3 hours before the alert went out and 127 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: 914 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 67 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.

000 
ACUS11 KWNS 052017
SWOMCD
SPC MCD 052017 
MEZ000-MAZ000-NHZ000-RIZ000-VTZ000-CTZ000-NYZ000-052145-

MESOSCALE DISCUSSION 1014
NWS STORM PREDICTION CENTER NORMAN OK
0317 PM CDT TUE JUN 05 2007

AREAS AFFECTED...ERN NY THROUGH MUCH OF NEW ENGLAND

CONCERNING...SEVERE THUNDERSTORM WATCH 347...

VALID 052017Z - 052145Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 347
CONTINUES.

THREAT FOR MAINLY ISOLATED DAMAGING WIND AND LARGE HAIL WILL LIKELY
PERSIST NEXT FEW HOURS FROM ERN NY THROUGH MUCH OF NEW ENGLAND.

THIS AFTERNOON A COLD FRONT EXTENDS FROM W CNTRL NY SWWD INTO ERN
PA. A PRE-FRONTAL TROUGH EXTENDS FROM VT SWD THROUGH SRN NEW
ENGLAND.  NUMEROUS STORMS CONTINUE DEVELOPING IN WEAKLEY CAPPED WARM
SECTOR ALONG AND EAST OF THESE BOUNDARIES WITHIN ZONE OF ASCENT
ATTENDING NEWD EJECTING SHORTWAVE TROUGH. STRONGEST STORMS CURRENTLY
EXIST ACROSS PORTIONS OF NEW ENGLAND. THIS ACTIVITY APPEARS TO BE
MOVING THROUGH AXIS OF HIGHER INSTABILITY WITHIN BELT OF STRONGER
UPPER FLOW AND DEEP LAYER SHEAR ASSOCIATED WITH LEAD VORT MAX.

FARTHER WEST ACROSS CNTRL AND ERN NY...STORMS ARE DEVELOPING ALONG
AND JUST AHEAD OF PRIMARY COLD FRONT. HOWEVER...THESE STORMS ARE IN
AN ENVIRONMENT OF WEAKER INSTABILITY AND DEEP SHEAR SUPPORTIVE OF
MAINLY MULTICELLS. SOME THREAT FOR LOCALIZED DOWNBURSTS AND HAIL MAY
ALSO EXIST WITH THIS ACTIVITY...BUT THREAT WITH THESE STORMS IS
EXPECTED TO REMAIN MORE MARGINAL THAN FARTHER EAST.

..DIAL.. 06/05/2007

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...GYX...BOX...BTV...OKX...ALY...

45717005 44296944 43057087 41567145 41657397 42367442
44107368 44807320 44977131

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 5, 11:30 AM EDT	Mesoscale Discussion	SPC		2 hr
Jun 5, 12:09 PM EDT	Severe Thunderstorm Watch	SPC	Greater Bridgeport Planning Region, Capitol Planning Region, Northwest Hills Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region and 1 more	7 hr
Jun 5, 6:38 PM EDT	Mesoscale Discussion	SPC	Androscoggin, Cumberland, Franklin, Kennebec, Knox, Lincoln and 4 more	37 min

Nearby

Mesoscale Discussions in Vermont, 2007 Mesoscale Discussions in New Hampshire, 2007 Mesoscale Discussions in New York, 2007 Every mesoscale discussion in 2007

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.