Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 110, NWS Boston/Norton, MA

August 14, 2016Middlesex County, Worcester County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 14, 2016, 7:49 PM EDT for Middlesex County, Worcester County, Massachusetts. It was in force for 38 min. 1 report 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
Aug 14, 2016, 7:49 PM EDT (23:49 UTC)
Expired
Aug 14, 2016, 8:27 PM EDT
In force
38 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Middlesex County, MA, Worcester County, MA

The radar

The Boston radar (KBOX), 46 km from the middle of the area, began a volume at 23:53 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
Aug 14, 7:55 PM EDTTSTM WND DMGWorcester, MAPOWER LINES DOWN ON JOHNSON STREET

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

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 11.8 hours before the alert went out and 148 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 12:00Z on 2016-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 450 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2016-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 square meters per square second.193958Sfc1 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
450 J/kg
Mixed-layer CIN
-213 J/kg
Mixed-layer LCL
817 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
75 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

342 
WUUS51 KBOX 142349
SVRBOX
MAC017-027-150045-
/O.NEW.KBOX.SV.W.0110.160814T2349Z-160815T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
749 PM EDT SUN AUG 14 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  SOUTH CENTRAL MIDDLESEX COUNTY IN NORTHEASTERN MASSACHUSETTS...

* UNTIL 845 PM EDT

* AT 748 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM SHREWSBURY TO MILLBURY TO NEAR OXFORD...MOVING EAST
  AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

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

* LOCATIONS IMPACTED INCLUDE...
  WORCESTER...FRAMINGHAM...MARLBOROUGH...SHREWSBURY...NATICK...
  MILFORD...WESTBOROUGH...GRAFTON...SUDBURY...WEBSTER...ASHLAND...
  AUBURN...BURRILLVILLE...NORTHBRIDGE...HOPKINTON...NORTHBOROUGH...
  OXFORD...HOLLISTON...UXBRIDGE AND MILLBURY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
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 4237 7135 4218 7142 4215 7148 4213 7148
      4212 7150 4209 7150 4201 7163 4201 7180
      4202 7180 4203 7187 4209 7200 4218 7190
      4232 7180
TIME...MOT...LOC 2348Z 272DEG 27KT 4226 7172 4217 7179 4211 7190 

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

SIPPRELL
2 follow-up statements
677 
WWUS51 KBOX 150016
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
816 PM EDT SUN AUG 14 2016

MAC017-027-150045-
/O.CON.KBOX.SV.W.0110.000000T0000Z-160815T0045Z/
WORCESTER MA-MIDDLESEX MA-
816 PM EDT SUN AUG 14 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM EDT
FOR SOUTHEASTERN WORCESTER AND SOUTH CENTRAL MIDDLESEX COUNTIES...

AT 816 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM ASHLAND TO MILFORD TO NORTHBRIDGE...MOVING EAST AT 30
MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

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

LOCATIONS IMPACTED INCLUDE...
FRAMINGHAM...MARLBOROUGH...NATICK...MILFORD...WESTBOROUGH...
SUDBURY...ASHLAND...NORTHBRIDGE...HOPKINTON...HOLLISTON...UXBRIDGE...
WAYLAND...MEDWAY...SOUTHBOROUGH...BLACKSTONE...DOUGLAS...UPTON...
HOPEDALE...MENDON AND SHERBORN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
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.

TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4237 7135 4218 7142 4215 7148 4213 7148
      4212 7150 4209 7150 4201 7163 4202 7178
      4216 7162 4235 7153
TIME...MOT...LOC 0016Z 272DEG 27KT 4225 7146 4216 7153 4210 7164 

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

SIPPRELL
050 
WWUS51 KBOX 150027
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
827 PM EDT SUN AUG 14 2016

MAC017-027-150037-
/O.CAN.KBOX.SV.W.0110.000000T0000Z-160815T0045Z/
WORCESTER MA-MIDDLESEX MA-
827 PM EDT SUN AUG 14 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WORCESTER AND
SOUTH CENTRAL MIDDLESEX COUNTIES IS CANCELLED...
    
THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE...THE WARNING HAS BEEN CANCELLED. HOWEVER GUSTY WINDS AND
HEAVY RAIN ARE STILL POSSIBLE WITH THESE THUNDERSTORMS.

LAT...LON 4237 7135 4218 7142 4215 7148 4213 7148
      4212 7150 4209 7150 4201 7163 4202 7178
      4216 7162 4235 7153
TIME...MOT...LOC 0027Z 272DEG 27KT 4225 7135 4216 7142 4210 7153 

$$

SIPPRELL

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 8:22 PM EDTSpecial Weather StatementBOXFranklin38 min
Aug 13, 8:37 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire53 min
Aug 13, 8:59 PM EDTSpecial Weather StatementBOXFranklin, Hampden, Hampshire61 min
Aug 13, 9:04 PM EDTAreal Flood WarningBOXFranklin, Hampshire, Middlesex, Worcester116 min
Aug 13, 9:04 PM EDTSpecial Weather StatementBOXMiddlesex56 min
Aug 13, 9:09 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire44 min
Aug 13, 9:29 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire46 min
Aug 13, 9:31 PM EDTAreal Flood WarningBOXFranklin, Hampshire, Worcester119 min
Aug 13, 9:59 PM EDTSpecial Weather StatementBOXEssex, Middlesex, Worcester61 min
Aug 13, 10:07 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampshire, Middlesex, Worcester38 min
Aug 13, 10:15 PM EDTSevere Thunderstorm WarningBOXHampden, Hampshire, Worcester45 min
Aug 13, 10:25 PM EDTFlash Flood WarningBOXWorcester2 hr
Aug 13, 10:38 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Worcester52 min
Aug 13, 11:04 PM EDTSpecial Weather StatementBOXNorfolk41 min
Aug 13, 11:06 PM EDTSpecial Marine WarningBOX54 min
Aug 13, 11:35 PM EDTSpecial Weather StatementBOXBristol, Norfolk, Plymouth55 min
Aug 13, 11:42 PM EDTSpecial Marine WarningBOX63 min
Aug 14, 12:44 AM EDTSpecial Marine WarningBOX61 min
Aug 14, 1:44 AM EDTSpecial Marine WarningBOX61 min
Aug 14, 1:50 AM EDTSevere Thunderstorm WarningBOXWorcester40 min
Aug 14, 2:04 AM EDTSpecial Weather StatementBOXBristol, Norfolk56 min
Aug 14, 2:10 AM EDTSpecial Marine WarningBOX65 min
Aug 14, 2:28 AM EDTSevere Thunderstorm WarningBOXNorfolk, Plymouth, Suffolk32 min
Aug 14, 3:13 AM EDTSpecial Marine WarningBOX62 min
Aug 14, 3:28 AM EDTExcessive Heat WarningBOXBristol, Plymouth16 hr
Aug 14, 7:27 PM EDTSpecial Weather StatementBOXWorcester33 min
Aug 14, 7:47 PM EDTSpecial Weather StatementBOXWorcester28 min

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.