Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 8, NWS Boston/Norton, MA

February 25, 20165 counties in Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Feb 25, 2016, 2:40 AM EST for 5 counties in Massachusetts. It was in force for 50 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
Feb 25, 2016, 2:40 AM EST (07:40 UTC)
Expired
Feb 25, 2016, 3:30 AM EST
In force
50 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

Counties Bristol County, MA, Essex County, MA, Middlesex County, MA, Norfolk County, MA, Worcester County, MA

The radar

The Boston radar (KBOX), 42 km from the middle of the area, began a volume at 07:42 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

TimeReportWhereRemark
Feb 25, 2:46 AM ESTTSTM WND DMGHopkinton, MATREE AND BRANCHES DOWN.
Feb 25, 2:47 AM ESTTSTM WND DMGConcord, MAWINDS SHATTERED STORM WINDOW.
Feb 25, 2:56 AM ESTTSTM WND DMGNorfolk, MATREES AND WIRES DOWN.
Feb 25, 2:58 AM ESTHIGH SUST WINDS 402 Wsw Bedford, MA
Feb 25, 3:02 AM ESTTSTM WND DMGSherborn, MALARGE TREE DOWN.
Feb 25, 3:03 AM ESTTSTM WND DMGWalpole, MATREES AND WIRES DOWN.
Feb 25, 3:06 AM ESTTSTM WND DMGSherborn, MATREE DOWN BETWEEN MORSE ROAD AND ELLIOTT.
Feb 25, 3:11 AM ESTTSTM WND DMGConcord, MATREES...WIRES...AND POLES DOWN. ROADS CLOSED IN MULTIPLE LOCATIONS INCLUDING ELM STREET...CRESCENT STREET...MACARTHUR ROAD...AND ORNAC ROAD NEAR ROUTE 2.
Feb 25, 3:18 AM ESTTSTM WND DMGSherborn, MATHREE TREES DOWN ON HUNTING LANE AND NORTH MAIN STREET.
Feb 25, 3:19 AM ESTTSTM WND DMGConcord, MAELM STREET BLOCKED IN 3 LOCATIONS WITH SNAPPED UTILITY POLES. SUDBURY ROAD IS BLOCKED WITH TREES AND WIRES DOWN.
Feb 25, 3:24 AM ESTTSTM WND DMGFoxboro, MAWIRES DOWN ON CHESTNUT STREET BLOCKING THE FRONT DOOR OF A HOUSE.
Feb 25, 3:25 AM ESTTSTM WND DMGBillerica, MATREE/LARGE BRANCH DOWN ON BALDWIN ROAD.
Feb 25, 3:27 AM ESTTSTM WND DMGConcord, MAPOLE AND WIRES DOWN BLOCKING MUSKETEQUID ROAD.

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.

IssuedProductOfficeLasted
Feb 24, 11:51 PM ESTSevere Thunderstorm WatchSPC4 hr
Feb 25, 1:22 AM ESTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Chatham, MA (KCHH), launched 00:00Z, 7.7 hours before the alert went out and 139 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-pSkew-T log-p diagram, Chatham, MA at 00:00Z on 2016-02-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 00:00Z on 2016-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 184 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
777 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
184 m²/s²
0-3 km storm-relative helicity
208 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

709 
WUUS51 KBOX 250740
SVRBOX
MAC005-009-017-021-027-250830-
/O.NEW.KBOX.SV.W.0008.160225T0740Z-160225T0830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
240 AM EST THU FEB 25 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN BRISTOL COUNTY IN SOUTHEASTERN MASSACHUSETTS...
  WEST CENTRAL ESSEX COUNTY IN NORTHEASTERN MASSACHUSETTS...
  WESTERN NORFOLK COUNTY IN EASTERN MASSACHUSETTS...
  SOUTHEASTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  MIDDLESEX COUNTY IN NORTHEASTERN MASSACHUSETTS...

* UNTIL 330 AM EST

* AT 239 AM EST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS
  STORM WAS LOCATED OVER UPTON...OR NEAR MILFORD...AND WAS MOVING
  NORTHEAST AT 115 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LOWELL...NEWTON...LAWRENCE...FRAMINGHAM...WALTHAM...METHUEN...ARLINGTON...
  BILLERICA...MARLBOROUGH...WOBURN...SHREWSBURY...CHELMSFORD...ANDOVER...
  NATICK...WATERTOWN...FRANKLIN...LEXINGTON...DRACUT...TEWKSBURY AND
  NEEDHAM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS. GO INDOORS AND STAY
AWAY FROM WINDOWS.  DRIVERS SHOULD PREPARE FOR LOW VISIBILITY AND
AVOID FLOODED ROADS.

THIS IS AN EXTREMELY DANGEROUS SITUATION. MOBILE HOMES AND HIGH
PROFILE VEHICLES ARE ESPECIALLY SUSCEPTIBLE TO WINDS OF THIS
MAGNITUDE AND MAY BE OVERTURNED. FOR YOUR PROTECTION MOVE
IMMEDIATELY TO A SAFE SHELTER OR TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.
THIS STORM HAS THE POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT
PROPERTY DAMAGE.

MINOR FLOODING CAN BE EXPECTED FROM TORRENTIAL RAINFALL. DO NOT DRIVE
THROUGH FLOODED ROADS.

&&

LAT...LON 4203 7124 4201 7179 4202 7179 4269 7156
      4270 7115
TIME...MOT...LOC 0739Z 210DEG 98KT 4216 7159 

$$

MD
1 follow-up statement
196 
WWUS51 KBOX 250821
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
321 AM EST THU FEB 25 2016

MAC005-009-017-021-027-250830-
/O.EXP.KBOX.SV.W.0008.000000T0000Z-160225T0830Z/
BRISTOL MA-ESSEX MA-NORFOLK MA-WORCESTER MA-MIDDLESEX MA-
321 AM EST THU FEB 25 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN BRISTOL...WEST
CENTRAL ESSEX...WESTERN NORFOLK...SOUTHEASTERN WORCESTER AND
MIDDLESEX COUNTIES WILL EXPIRE AT 330 AM EST...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS ALTHOUGH STRONG WINDS MAY LINGER.

LAT...LON 4203 7124 4201 7179 4202 7179 4269 7156
      4270 7115
TIME...MOT...LOC 0817Z 210DEG 98KT 4216 7159 

$$

MD

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 10:13 PM ESTSpecial Weather StatementBOXHampden32 min
Feb 24, 10:32 PM ESTSpecial Weather StatementBOXFranklin, Hampshire28 min
Feb 24, 11:24 PM ESTSpecial Weather StatementBOXFranklin, Hampden, Hampshire36 min
Feb 24, 11:55 PM ESTSpecial Weather StatementBOXFranklin, Hampden, Hampshire, Worcester50 min
Feb 25, 12:19 AM ESTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire41 min
Feb 25, 12:38 AM ESTSpecial Weather StatementBOXHampden52 min
Feb 25, 12:55 AM ESTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire50 min
Feb 25, 12:58 AM ESTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire, Middlesex, Worcester62 min
Feb 25, 1:11 AM ESTAreal Flood AdvisoryBOXFranklin, Hampden, Hampshire, Worcester3 hr
Feb 25, 1:25 AM ESTAreal Flood WarningBOXFranklin, Hampden, Hampshire4 hr
Feb 25, 1:54 AM ESTSevere Thunderstorm WarningBOXHampden51 min
Feb 25, 1:57 AM ESTSevere Thunderstorm WarningBOXHampden, Middlesex, Worcester48 min
Feb 25, 2:56 AM ESTSpecial Marine WarningBOX64 min
Feb 25, 3:01 AM ESTSevere Thunderstorm WarningBOXBristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk59 min
Feb 25, 3:11 AM ESTSevere Thunderstorm WarningBOXBarnstable, Bristol, Norfolk, Plymouth64 min
Feb 25, 3:52 AM ESTSevere Thunderstorm WarningBOXBristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk38 min
Feb 25, 4:11 AM ESTSevere Thunderstorm WarningBOXBarnstable, Bristol, Plymouth49 min
Feb 25, 5:29 AM ESTAreal Flood WarningBOXFranklin, Hampden, Hampshire2 hr
Feb 25, 7:26 AM ESTAreal Flood WarningBOXFranklin, Hampshire2 hr
Feb 25, 8:02 AM ESTRiver Flood WarningBOXHampden, Hampshire17 hr
Feb 25, 2:21 PM ESTRiver Flood WarningBOXFranklin, Hampshire44 hr
Feb 25, 2:21 PM ESTRiver Flood WarningBOXHampden, Hampshire62 hr
Feb 25, 2:21 PM ESTRiver Flood WarningBOXHampden71 hr
Feb 25, 6:53 PM ESTSmall Craft AdvisoryBOX33 hr

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2016Every 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.