Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 113, NWS Boston/Norton, MA

June 29, 2008Hillsborough County, New Hampshire; Essex County, Middlesex County, Worcester County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 29, 2008, 5:05 PM EDT for Hillsborough County, New Hampshire; Essex County, Middlesex County, Worcester County, Massachusetts. It was in force for 40 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 29, 2008, 5:05 PM EDT (21:05 UTC)
Expired: Jun 29, 2008, 5:45 PM EDT
In force: 40 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

Counties Essex County, MA, Middlesex County, MA, Worcester County, MA, Hillsborough County, NH

The radar

The Boston radar (KBOX), 84 km from the middle of the area, began a volume at 21:05 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.

What was reported inside it

Time	Report	Where	Remark
Jun 29, 5:10 PM EDT	TSTM WND DMG	Groton, MA	TWO UTILITY POLES AND WIRES DOWN WITH POWER OUTAGES
Jun 29, 5:18 PM EDT	TSTM WND DMG	Westford, MA	TREES DOWN ON PALERMO ROAD AND PLEASANT STREET
Jun 29, 5:25 PM EDT	TSTM WND DMG	Lowell, MA	WIRES DOWN ON SEVERAL STREETS
Jun 29, 5:37 PM EDT	TSTM WND DMG	Dracut, MA	TREE AND WIRES DOWN AT INTERSECTION OF ARLINGTON AND CHEEVER STREET

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 9.1 hours before the alert went out and 160 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: 443 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 181 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 
WUUS51 KBOX 292105
SVRBOX
MAC009-017-027-NHC011-292145-
/O.NEW.KBOX.SV.W.0113.080629T2105Z-080629T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
505 PM EDT SUN JUN 29 2008

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME NORTHEASTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  WEST CENTRAL ESSEX COUNTY IN EASTERN MASSACHUSETTS...
  THIS INCLUDES THE CITY OF LAWRENCE...
  NORTH CENTRAL MIDDLESEX COUNTY IN EASTERN MASSACHUSETTS...
  THIS INCLUDES THE CITY OF LOWELL...
  SOUTHEASTERN HILLSBOROUGH COUNTY IN SOUTHERN NEW HAMPSHIRE...
  THIS INCLUDES THE CITY OF NASHUA...

* UNTIL 545 PM EDT

* AT 500 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR DUNSTABLE...OR NEAR
  NASHUA...AND MOVING NORTHEAST AT 23 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NASHUA AND TYNGSBORO BY 510 PM EDT...
  8 MILES NORTHWEST OF LOWELL BY 515 PM EDT...
  HUDSON AND 8 MILES NORTHWEST OF DRACUT BY 520 PM EDT...
  PELHAM BY 525 PM EDT...
  9 MILES NORTHWEST OF METHUEN BY 540 PM EDT...

THERE IS A LINE OF STRONG THUNDERSTORMS FOLLOWING THIS LEAD CELL
  THAT HAS A HAD HISTORY OF PRODUCING WIND DAMAGE THROUGH MUCH OF   
  WEST CENTRAL THROUGH NORTHEAST WORCESTER COUNTY. 

LAT...LON 4241 7151 4267 7164 4282 7143 4279 7134
      4278 7134 4277 7131 4277 7127 4275 7123
      4275 7119 4268 7111
TIME...MOT...LOC 2103Z 230DEG 20KT 4269 7150

$$
DRAG

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 29, 3:28 PM EDT	Severe Thunderstorm Warning	BOX	Cheshire	32 min
Jun 29, 3:54 PM EDT	Severe Thunderstorm Warning	BOX	Cheshire	36 min
Jun 29, 4:16 PM EDT	Severe Thunderstorm Warning	BOX	Cheshire, Hillsborough	44 min
Jun 29, 4:23 PM EDT	Severe Thunderstorm Warning	BOX	Hillsborough	22 min
Jun 29, 4:37 PM EDT	Severe Thunderstorm Warning	BOX	Hillsborough	38 min
Jun 29, 5:35 PM EDT	Severe Thunderstorm Warning	BOX	Hillsborough	25 min
Jun 28, 10:45 PM EDT	Dense Fog Advisory	BOX	Barnstable, Bristol, Dukes, Essex, Middlesex, Nantucket and 3 more	9 hr
Jun 29, 4:50 AM EDT	High Surf Advisory	BOX	Dukes	5 hr
Jun 29, 3:34 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	26 min
Jun 29, 3:48 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Worcester	27 min
Jun 29, 4:11 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire, Worcester	33 min
Jun 29, 4:36 PM EDT	Areal Flood Advisory	BOX	Hampshire, Middlesex, Worcester	108 min
Jun 29, 5:44 PM EDT	Special Marine Warning	BOX		46 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2008 Severe Thunderstorm Warnings in New Hampshire, 2008 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.