Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 13, NWS Boston/Norton, MA

May 28, 20155 counties in Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at May 28, 2015, 4:48 PM EDT for 5 counties in Massachusetts. It was in force for 57 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
May 28, 2015, 4:48 PM EDT (20:48 UTC)
Expired
May 28, 2015, 5:45 PM EDT
In force
57 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

Counties Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA

The radar

The Boston radar (KBOX), 90 km from the middle of the area, began a volume at 20:49 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
May 28, 4:50 PM EDTTSTM WND DMGWare, MALARGE TREE DOWN ON WARE BROOK DRIVE.

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
May 28, 11:54 AM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 8.8 hours before the alert went out and 147 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, Albany, NY at 12:00Z on 2015-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 153 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, Albany, NY at 12:00Z on 2015-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 171 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
153 J/kg
Mixed-layer CIN
-96 J/kg
Mixed-layer LCL
670 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
171 m²/s²
0-3 km storm-relative helicity
177 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

695 
WUUS51 KBOX 282048
SVRBOX
MAC011-013-015-017-027-282145-
/O.NEW.KBOX.SV.W.0013.150528T2048Z-150528T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
448 PM EDT THU MAY 28 2015

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS...
  EAST CENTRAL HAMPDEN COUNTY IN WESTERN MASSACHUSETTS...
  CENTRAL WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  SOUTHEASTERN FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...
  CENTRAL MIDDLESEX COUNTY IN NORTHEASTERN MASSACHUSETTS...

* UNTIL 545 PM EDT

* AT 448 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 60 MPH. THIS STORM WAS LOCATED OVER LUNENBURG...OR NEAR
  LEOMINSTER...AND WAS MOVING EAST AT 40 MPH.

* SOME LOCATIONS IMPACTED INCLUDE...
  WORCESTER...FRAMINGHAM...CHICOPEE...LEOMINSTER...FITCHBURG...
  HOLYOKE...MARLBOROUGH...AMHERST...SHREWSBURY...WESTFORD...ACTON...
  LUDLOW...HUDSON...WESTBOROUGH...GRAFTON...SUDBURY...SOUTH HADLEY...
  HOLDEN...ASHLAND AND AUBURN.

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.

&&

LAT...LON 4219 7261 4242 7238 4270 7143 4222 7144
TIME...MOT...LOC 2048Z 258DEG 37KT 4256 7171 
$$

FRANK
2 follow-up statements
900 
WWUS51 KBOX 282115
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
515 PM EDT THU MAY 28 2015

MAC011-282124-
/O.CAN.KBOX.SV.W.0013.000000T0000Z-150528T2145Z/
FRANKLIN MA-
515 PM EDT THU MAY 28 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FRANKLIN COUNTY
IS CANCELED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF 
THE WARNED AREA.  THEREFORE THE WARNING HAS BEEN CANCELED.

LAT...LON 4222 7144 4219 7261 4232 7235 4230 7236
      4235 7229 4270 7143
TIME...MOT...LOC 2114Z 258DEG 37KT 4262 7135 

$$

MAC013-015-017-027-282145-
/O.CON.KBOX.SV.W.0013.000000T0000Z-150528T2145Z/
HAMPSHIRE MA-HAMPDEN MA-WORCESTER MA-MIDDLESEX MA-
515 PM EDT THU MAY 28 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR SOUTHEASTERN HAMPSHIRE...EAST CENTRAL HAMPDEN...CENTRAL WORCESTER
AND CENTRAL MIDDLESEX COUNTIES...

AT 514 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60
MPH. THIS STORM WAS LOCATED OVER CHELMSFORD...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
WORCESTER...FRAMINGHAM...CHICOPEE...LEOMINSTER...FITCHBURG...
MARLBOROUGH...SHREWSBURY...WESTFORD...ACTON...LUDLOW...HUDSON...
WESTBOROUGH...GRAFTON...SUDBURY...HOLDEN...ASHLAND...AUBURN...
HOPKINTON...BELCHERTOWN AND NORTHBOROUGH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND DESTRUCTIVE HAIL. GO
INSIDE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. DRIVERS SHOULD EXPECT POOR VISIBILITY AND AVOID FLOODED
ROADS.

&&

LAT...LON 4222 7144 4219 7261 4232 7235 4230 7236
      4235 7229 4270 7143
TIME...MOT...LOC 2114Z 258DEG 37KT 4262 7135 

$$

FRANK
677 
WWUS51 KBOX 282128
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
528 PM EDT THU MAY 28 2015

MAC013-015-017-027-282145-
/O.CON.KBOX.SV.W.0013.000000T0000Z-150528T2145Z/
HAMPSHIRE MA-HAMPDEN MA-WORCESTER MA-MIDDLESEX MA-
528 PM EDT THU MAY 28 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR SOUTHEASTERN HAMPSHIRE...EAST CENTRAL HAMPDEN...CENTRAL WORCESTER
AND CENTRAL MIDDLESEX COUNTIES...

AT 527 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED OVER BOLTON...OR NEAR MARLBOROUGH...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
WORCESTER...FRAMINGHAM...MARLBOROUGH...SHREWSBURY...WESTFORD...
ACTON...LUDLOW...HUDSON...WESTBOROUGH...GRAFTON...SUDBURY...HOLDEN...
ASHLAND...AUBURN...HOPKINTON...BELCHERTOWN...NORTHBOROUGH...
CLINTON...HOLLISTON AND MILLBURY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND DESTRUCTIVE HAIL. GO
INSIDE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. DRIVERS SHOULD EXPECT POOR VISIBILITY AND AVOID FLOODED
ROADS.

&&

LAT...LON 4219 7249 4231 7220 4234 7211 4239 7205
      4241 7183 4270 7143 4222 7144
TIME...MOT...LOC 2127Z 260DEG 37KT 4243 7163 

$$

FRANK

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 4:03 AM EDTSmall Craft AdvisoryBOX18 hr
May 28, 2:01 PM EDTSpecial Weather StatementBOXFranklin29 min
May 28, 2:12 PM EDTSpecial Weather StatementBOXFranklin48 min
May 28, 2:31 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampshire44 min
May 28, 2:44 PM EDTSpecial Weather StatementBOXHampshire46 min
May 28, 2:58 PM EDTSpecial Weather StatementBOXFranklin47 min
May 28, 3:15 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampshire, Worcester45 min
May 28, 3:28 PM EDTSpecial Weather StatementBOXHampshire47 min
May 28, 3:44 PM EDTSevere Thunderstorm WarningBOXFranklin, Middlesex, Worcester46 min
May 28, 3:59 PM EDTSevere Thunderstorm WarningBOXFranklin, Worcester46 min
May 28, 4:03 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampshire27 min
May 28, 4:10 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampshire, Worcester50 min
May 28, 4:45 PM EDTSevere Thunderstorm WarningBOXEssex, Middlesex45 min
May 28, 4:49 PM EDTSpecial Marine WarningBOX86 min
May 28, 4:54 PM EDTSpecial Weather StatementBOXHampden51 min
May 28, 5:40 PM EDTSevere Thunderstorm WarningBOXEssex35 min
May 28, 5:42 PM EDTSpecial Marine WarningBOX48 min
May 28, 5:48 PM EDTSpecial Weather StatementBOXMiddlesex27 min
May 28, 5:56 PM EDTSevere Thunderstorm WarningBOXEssex, Middlesex, Suffolk49 min
May 28, 6:01 PM EDTSpecial Marine WarningBOX59 min
May 28, 6:13 PM EDTSpecial Weather StatementBOXWorcester32 min
May 28, 6:30 PM EDTSpecial Weather StatementBOXNorfolk30 min
May 28, 6:55 PM EDTSpecial Weather StatementBOXSuffolk35 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2015Every severe thunderstorm warning in 2015

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.