Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 36, NWS Boston/Norton, MA

July 18, 2016Franklin County, Hampshire County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 18, 2016, 1:42 PM EDT for Franklin County, Hampshire County, Massachusetts. It was in force for 48 min. 13 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: Jul 18, 2016, 1:42 PM EDT (17:42 UTC)
Expired: Jul 18, 2016, 2:30 PM EDT
In force: 48 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Franklin County, MA, Hampshire County, MA

The radar

The Albany radar (KENX), 97 km from the middle of the area, began a volume at 17:43 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
Jul 18, 2:05 PM EDT	TSTM WND DMG	Hawley, MA	TREES AND WIRES DOWN ON EAST HAWLEY ROAD.
Jul 18, 2:09 PM EDT	TSTM WND DMG	Ashfield, MA	TREE AND WIRES DOWN ON APPLE VALLEY ROAD
Jul 18, 2:10 PM EDT	TSTM WND DMG	Shelburne, MA	TREE DOWN JUST EAST OF GOULDS SUGAR HOUSE ON ROUTE 2.
Jul 18, 2:11 PM EDT	TSTM WND DMG	Shelburne, MA	TREE DOWN ON WIRES ON BARDSWELL FERRY ROAD
Jul 18, 2:16 PM EDT	TSTM WND DMG	Greenfield, MA	LARGE TREE BRANCH DOWN ON WIRES ON CONGRESS STREET.
Jul 18, 2:20 PM EDT	TSTM WND DMG	Bernardston, MA	WIRES DOWN ON RIVER ROAD.
Jul 18, 2:20 PM EDT	TSTM WND DMG	Conway, MA	UTILITY POLE AND WIRES DOWN ON SHELBURNE FALLS ROAD.
Jul 18, 2:22 PM EDT	TSTM WND DMG	Greenfield, MA	LARGE TREE BRANCH DOWN ON WIRES ON CONGRESS AND ORCHARD STREETS.
Jul 18, 2:25 PM EDT	TSTM WND DMG	Bernardston, MA	WIRES DOWN ON NORTHFIELD ROAD. TREE ON HOUSE ON SOUTH STREET.
Jul 18, 2:25 PM EDT	TSTM WND DMG	Greenfield, MA	TREE ON A HOUSE ON MILL STREET.
Jul 18, 2:25 PM EDT	TSTM WND DMG	Greenfield, MA	TREE ON HOUSE ON MILL STREET.
Jul 18, 2:25 PM EDT	TSTM WND DMG	Turners Falls, MA	NUMEROUS POWER LINES DOWN THROUGHOUT TOWN
Jul 18, 2:32 PM EDT	TSTM WND DMG	Greenfield, MA	TREE AND WIRES DOWN ON PROSPECT AVENUE.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 18, 12:05 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 5.7 hours before the alert went out and 194 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: 1 J/kg
Mixed-layer CIN: -127 J/kg
Mixed-layer LCL: 1554 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

173 
WUUS51 KBOX 181742
SVRBOX
MAC011-015-181830-
/O.NEW.KBOX.SV.W.0036.160718T1742Z-160718T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
142 PM EDT MON JUL 18 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS...
  CENTRAL FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...

* UNTIL 230 PM EDT

* AT 141 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
  CHESHIRE...OR 7 MILES NORTHEAST OF PITTSFIELD...MOVING EAST AT 50
  MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  GREENFIELD...DEERFIELD...MONTAGUE...SUNDERLAND...NORTHFIELD...
  WILLIAMSBURG...BERNARDSTON...BUCKLAND...CONWAY...SHELBURNE...
  LEVERETT...ERVING...SHUTESBURY...ASHFIELD...COLRAIN...GILL...
  WHATELY...CHARLEMONT...GOSHEN AND CUMMINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING ARE
OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY. LIGHTNING IS
ONE OF NATURE'S LEADING KILLERS. REMEMBER...IF YOU CAN HEAR
THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 4269 7297 4271 7246 4243 7246 4245 7299
      4252 7297 4256 7298 4263 7295 4267 7296
      4266 7298 4267 7300
TIME...MOT...LOC 1741Z 264DEG 45KT 4254 7319 

HAIL...<.75IN
WIND...60MPH
 
$$
FIELD

1 follow-up statement

795 
WWUS51 KBOX 181754
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
154 PM EDT MON JUL 18 2016

MAC011-015-181830-
/O.CON.KBOX.SV.W.0036.000000T0000Z-160718T1830Z/
HAMPSHIRE MA-FRANKLIN MA-
154 PM EDT MON JUL 18 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM EDT
FOR NORTHWESTERN HAMPSHIRE AND CENTRAL FRANKLIN COUNTIES...

AT 152 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER SAVOY...OR 10
MILES SOUTHEAST OF NORTH ADAMS...MOVING EAST AT 45 MPH. TREES AND
WIRES HAVE BEEN REPORTED DOWNED IN LANESBORO AND CHESHIRE IN
BERKSHIRE COUNTY WITH THIS STORM. 

HAZARD...70 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY
         TO MOBILE HOMES... ROOFS...AND OUTBUILDINGS. SOME HAIL
         DAMAGE IS ALSO POSSIBLE.

LOCATIONS IMPACTED INCLUDE...
GREENFIELD...DEERFIELD...MONTAGUE...SUNDERLAND...NORTHFIELD...
WILLIAMSBURG...BERNARDSTON...BUCKLAND...CONWAY...SHELBURNE...
LEVERETT...ERVING...SHUTESBURY...ASHFIELD...COLRAIN...GILL...
WHATELY...CHARLEMONT...GOSHEN AND CUMMINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4269 7297 4271 7246 4243 7246 4245 7299
      4252 7297 4256 7298 4263 7295 4267 7296
      4266 7298 4267 7300
TIME...MOT...LOC 1752Z 263DEG 41KT 4255 7302 

HAIL...1.00IN
WIND...70MPH
 
$$
FIELD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 1:22 PM EDT	Special Weather Statement	BOX	Franklin	38 min
Jul 18, 2:18 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Worcester	27 min
Jul 18, 2:30 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Worcester	45 min
Jul 18, 2:56 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	34 min
Jul 18, 3:08 PM EDT	Special Weather Statement	BOX	Essex	37 min
Jul 18, 3:17 PM EDT	Severe Thunderstorm Warning	BOX	Essex	28 min
Jul 18, 3:31 PM EDT	Special Weather Statement	BOX	Middlesex	29 min
Jul 18, 3:53 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Norfolk, Suffolk	52 min
Jul 18, 4:08 PM EDT	Special Marine Warning	BOX		52 min
Jul 18, 4:14 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Norfolk, Suffolk	46 min
Jul 18, 4:31 PM EDT	Special Marine Warning	BOX		59 min
Jul 18, 4:34 PM EDT	Severe Thunderstorm Warning	BOX	Norfolk, Plymouth, Suffolk	41 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2016 Every severe thunderstorm warning in 2016

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.