Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 13, NWS Boston/Norton, MA

February 25, 20166 counties in Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Feb 25, 2016, 3:52 AM EST for 6 counties in Massachusetts. It was in force for 38 min. 3 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, 3:52 AM EST (08:52 UTC)
Expired: Feb 25, 2016, 4:30 AM EST
In force: 38 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

Counties Bristol County, MA, Essex County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA

The radar

The Boston radar (KBOX), 59 km from the middle of the area, began a volume at 08:52 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
Feb 25, 3:55 AM EST	TSTM WND DMG	Lynn, MA	LARGE BRANCH DOWN ON WIRES ON POND STREET.
Feb 25, 4:15 AM EST	TSTM WND DMG	South Boston, MA	WIRES DOWN ON WEST FIFTH STREET.
Feb 25, 4:19 AM EST	TSTM WND DMG	Canton, MA	WIRES DOWN.

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
Feb 25, 1:22 AM EST	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Chatham, MA (KCHH), launched 00:00Z, 8.9 hours before the alert went out and 114 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: 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.

288 
WUUS51 KBOX 250852
SVRBOX
MAC005-009-017-021-023-025-250930-
/O.NEW.KBOX.SV.W.0013.160225T0852Z-160225T0930Z/

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

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL BRISTOL COUNTY IN SOUTHEASTERN MASSACHUSETTS...
  CENTRAL ESSEX COUNTY IN NORTHEASTERN MASSACHUSETTS...
  NORTHWESTERN PLYMOUTH COUNTY IN SOUTHEASTERN MASSACHUSETTS...
  EASTERN NORFOLK COUNTY IN EASTERN MASSACHUSETTS...
  CENTRAL SUFFOLK COUNTY IN EASTERN MASSACHUSETTS...
  EAST CENTRAL MIDDLESEX COUNTY IN NORTHEASTERN MASSACHUSETTS...

* UNTIL 430 AM EST

* AT 351 AM EST...DOPPLER RADAR INDICATED A CONTINUATION OF A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF
  70 MPH. 

* LOCATIONS IMPACTED INCLUDE...
  BOSTON...CAMBRIDGE...BROCKTON...QUINCY...LYNN...SOMERVILLE...MALDEN...
  BROOKLINE...MEDFORD...WEYMOUTH...REVERE...PEABODY...EVERETT...SALEM...
  BEVERLY...BRAINTREE...CHELSEA...RANDOLPH...GLOUCESTER AND NORWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND LARGE HAIL. 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 4267 7073 4264 7076 4269 7063 4264 7059
      4253 7078 4256 7078 4254 7090 4237 7104
      4237 7105 4234 7102 4230 7105 4227 7095
      4225 7096 4225 7088 4229 7088 4222 7075
      4203 7123 4267 7099 4270 7079
TIME...MOT...LOC 0851Z 211DEG 76KT 4318 7039 

$$

MD

1 follow-up statement

849 
WWUS51 KBOX 250923
SVSBOX

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

MAC005-009-017-021-023-025-250932-
/O.EXP.KBOX.SV.W.0013.000000T0000Z-160225T0930Z/
BRISTOL MA-ESSEX MA-PLYMOUTH MA-NORFOLK MA-SUFFOLK MA-MIDDLESEX MA-
423 AM EST THU FEB 25 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL BRISTOL...
CENTRAL ESSEX...NORTHWESTERN PLYMOUTH...EASTERN NORFOLK...CENTRAL
SUFFOLK AND EAST CENTRAL MIDDLESEX COUNTIES WILL EXPIRE AT 430 AM
EST...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER GUSTY WINDS
ARE STILL POSSIBLE WITH AS A FEW THUNDERSTORMS LINGER.

LAT...LON 4267 7073 4264 7076 4269 7063 4264 7059
      4253 7078 4256 7078 4254 7090 4237 7104
      4237 7105 4234 7102 4230 7105 4227 7095
      4225 7096 4225 7088 4229 7088 4222 7075
      4203 7123 4267 7099 4270 7079
TIME...MOT...LOC 0921Z 211DEG 76KT 4318 7039 

$$

MD

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 10:13 PM EST	Special Weather Statement	BOX	Hampden	32 min
Feb 24, 10:32 PM EST	Special Weather Statement	BOX	Franklin, Hampshire	28 min
Feb 24, 11:24 PM EST	Special Weather Statement	BOX	Franklin, Hampden, Hampshire	36 min
Feb 24, 11:55 PM EST	Special Weather Statement	BOX	Franklin, Hampden, Hampshire, Worcester	50 min
Feb 25, 12:19 AM EST	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire	41 min
Feb 25, 12:38 AM EST	Special Weather Statement	BOX	Hampden	52 min
Feb 25, 12:55 AM EST	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire	50 min
Feb 25, 12:58 AM EST	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire, Middlesex, Worcester	62 min
Feb 25, 1:11 AM EST	Areal Flood Advisory	BOX	Franklin, Hampden, Hampshire, Worcester	3 hr
Feb 25, 1:25 AM EST	Areal Flood Warning	BOX	Franklin, Hampden, Hampshire	4 hr
Feb 25, 1:54 AM EST	Severe Thunderstorm Warning	BOX	Hampden	51 min
Feb 25, 1:57 AM EST	Severe Thunderstorm Warning	BOX	Hampden, Middlesex, Worcester	48 min
Feb 25, 2:40 AM EST	Severe Thunderstorm Warning	BOX	Bristol, Essex, Middlesex, Norfolk, Worcester	50 min
Feb 25, 2:56 AM EST	Special Marine Warning	BOX		64 min
Feb 25, 3:01 AM EST	Severe Thunderstorm Warning	BOX	Bristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk	59 min
Feb 25, 3:11 AM EST	Severe Thunderstorm Warning	BOX	Barnstable, Bristol, Norfolk, Plymouth	64 min
Feb 25, 4:11 AM EST	Severe Thunderstorm Warning	BOX	Barnstable, Bristol, Plymouth	49 min
Feb 25, 5:29 AM EST	Areal Flood Warning	BOX	Franklin, Hampden, Hampshire	2 hr
Feb 25, 7:26 AM EST	Areal Flood Warning	BOX	Franklin, Hampshire	2 hr
Feb 25, 8:02 AM EST	River Flood Warning	BOX	Hampden, Hampshire	17 hr
Feb 25, 2:21 PM EST	River Flood Warning	BOX	Franklin, Hampshire	44 hr
Feb 25, 2:21 PM EST	River Flood Warning	BOX	Hampden, Hampshire	62 hr
Feb 25, 2:21 PM EST	River Flood Warning	BOX	Hampden	71 hr
Feb 25, 6:53 PM EST	Small Craft Advisory	BOX		33 hr

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.