Alert archive / Massachusetts / Tornado Warnings in 2014

Tornado Warning 2, NWS Boston/Norton, MA

July 7, 2014Middlesex County, Suffolk County, Massachusetts

NWS Boston/Norton, MA issued this tornado warning at Jul 7, 2014, 5:51 PM EDT for Middlesex County, Suffolk County, Massachusetts. It was in force for 24 min. 5 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 7, 2014, 5:51 PM EDT (21:51 UTC)
Expired
Jul 7, 2014, 6:15 PM EDT
In force
24 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

Counties Middlesex County, MA, Suffolk County, MA

The radar

The Boston radar (KBOX), 50 km from the middle of the area, began a volume at 21:51 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
Jul 7, 5:55 PM EDTFUNNEL CLOUDMedford, MAFUNNEL CLOUD REPORTED BY SPOTTER IN LYNN LOOKING TO THE SOUTHWEST. LOCATION APPROXIMATE.
Jul 7, 5:55 PM EDTTSTM WND DMGMalden, MATREE DOWN ON KENNEDY DRIVE.
Jul 7, 5:55 PM EDTTSTM WND DMGMedford, MATREE DOWN ON POWER LINE ON COREY AVE. LARGE TREE DOWN ON RIVERSIDE AVE. PHONE POLE DOWN ON MASS AVE. WIRES DOWN ON LAWRENCE ST.
Jul 7, 6:03 PM EDTFUNNEL CLOUDMalden, MAFUNNEL CLOUD SEEN TO THE NORTH OF FENWAY PARK ON WEBCAM. LOCATION APPROXIMATE.
Jul 7, 6:03 PM EDTTSTM WND DMGMalden, MATREE DOWN ON HOUSE AT WADE 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, 9.9 hours before the alert went out and 119 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 2014-07-07Temperature 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 12:00Z on 2014-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1151 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
60 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

673 
WFUS51 KBOX 072151
TORBOX
MAC017-025-072215-
/O.NEW.KBOX.TO.W.0002.140707T2151Z-140707T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
551 PM EDT MON JUL 7 2014

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN SUFFOLK COUNTY IN EASTERN MASSACHUSETTS...
  EAST CENTRAL MIDDLESEX COUNTY IN NORTHEAST MASSACHUSETTS...

* UNTIL 615 PM EDT
    
* AT 551 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  OVER MEDFORD...AND WAS MOVING EAST AT 35 MPH.

* SOME LOCATIONS IMPACTED INCLUDE...
  BOSTON...SOMERVILLE...MALDEN...MEDFORD...REVERE...ARLINGTON...
  EVERETT...CHELSEA...MELROSE...SAUGUS...STONEHAM...WINCHESTER AND
  WINTHROP.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! DO NOT WAIT TO SEE THE TORNADO. GO TO A BASEMENT OR
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING...AWAY FROM
WINDOWS. IF IN A VEHICLE OR OUTDOORS...GET TO THE CLOSEST SHELTER.
PROTECT YOURSELF FROM FLYING DEBRIS.

DRIVERS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. IF YOU
CANNOT SAFELY DRIVE AWAY FROM THE TORNADO...AS A LAST RESORT...EITHER
PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR VEHICLE AND LIE DOWN
IN A LOW LYING AREA. PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4244 7101 4243 7100 4244 7097 4241 7099
      4233 7093 4236 7097 4235 7099 4237 7104
      4239 7104 4239 7107 4238 7105 4237 7105
      4241 7116 4246 7114
TIME...MOT...LOC 2151Z 290DEG 30KT 4243 7109 
$$

JWD
3 follow-up statements
110 
WWUS51 KBOX 072157
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
557 PM EDT MON JUL 7 2014

MAC017-025-072215-
/O.CON.KBOX.TO.W.0002.000000T0000Z-140707T2215Z/
SUFFOLK MA-MIDDLESEX MA-
557 PM EDT MON JUL 7 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM EDT FOR
NORTHEASTERN SUFFOLK AND EASTERN MIDDLESEX COUNTIES...
    
AT 555 PM...A TRAINED SPOTTER IN LYNN REPORTED A FUNNEL CLOUD TO THE 
WEST.

AT 555 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 
OVER EVERETT...MOVING EAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
BOSTON...SOMERVILLE...MALDEN...MEDFORD...REVERE...EVERETT...
CHELSEA...MELROSE...SAUGUS...STONEHAM AND WINTHROP.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! LEAVE MOBILE HOMES AND GO TO A STRONG BUILDING. GO TO
THE BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR. STAY AWAY FROM
WINDOWS.

DO NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. IF YOU CANNOT SAFELY
DRIVE AWAY FROM THE TORNADO...AS A LAST RESORT...EITHER PARK YOUR
VEHICLE AND STAY PUT...OR ABANDON YOUR VEHICLE AND LIE DOWN IN A LOW
LYING AREA AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4244 7101 4243 7100 4244 7097 4241 7099
      4233 7093 4236 7097 4235 7099 4237 7104
      4239 7104 4239 7107 4238 7105 4237 7105
      4241 7113 4245 7111
TIME...MOT...LOC 2155Z 290DEG 30KT 4242 7105 

$$

JWD
109 
WWUS51 KBOX 072203
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
603 PM EDT MON JUL 7 2014

MAC017-025-072215-
/O.CON.KBOX.TO.W.0002.000000T0000Z-140707T2215Z/
SUFFOLK MA-MIDDLESEX MA-
603 PM EDT MON JUL 7 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM EDT FOR
NORTHEASTERN SUFFOLK AND EASTERN MIDDLESEX COUNTIES...
    
A TRAINED SPOTTER IN LYNN REPORTED A FUNNEL CLOUD TO THE SOUTHWEST 
AT 555 PM. 

AS OF 603 PM...THERE HAS BEEN NO CONFIRMATION OF A TORNADO.

AT 603 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED OVER
REVERE...MOVING EAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
BOSTON...SOMERVILLE...MALDEN...MEDFORD...REVERE...EVERETT...
CHELSEA...MELROSE...SAUGUS...STONEHAM AND WINTHROP.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! LEAVE MOBILE HOMES AND GO TO A STRONG BUILDING. GO TO
THE BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR. STAY AWAY FROM
WINDOWS.

DO NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. IF YOU CANNOT SAFELY
DRIVE AWAY FROM THE TORNADO...AS A LAST RESORT...EITHER PARK YOUR
VEHICLE AND STAY PUT...OR ABANDON YOUR VEHICLE AND LIE DOWN IN A LOW
LYING AREA AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4244 7101 4243 7100 4244 7097 4241 7099
      4233 7093 4236 7097 4235 7099 4237 7104
      4239 7104 4239 7107 4238 7105 4237 7105
      4241 7113 4245 7111
TIME...MOT...LOC 2203Z 288DEG 29KT 4242 7098 

$$

JWD
599 
WWUS51 KBOX 072208
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
608 PM EDT MON JUL 7 2014

MAC017-025-072217-
/O.EXP.KBOX.TO.W.0002.000000T0000Z-140707T2215Z/
SUFFOLK MA-MIDDLESEX MA-
608 PM EDT MON JUL 7 2014

...THE TORNADO WARNING FOR NORTHEASTERN SUFFOLK AND EASTERN MIDDLESEX
COUNTIES WILL EXPIRE AT 615 PM EDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OFF THE COAST. 
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE AT 615 PM.

THERE WAS NO CONFIRMATION OF A TORNADO WITH THIS STORM...ALTHOUGH A 
FUNNEL CLOUD WAS REPORTED BY A TRAINED SPOTTER IN LYNN AT 555 PM.

&&

LAT...LON 4244 7101 4243 7100 4244 7097 4241 7099
      4233 7093 4236 7097 4235 7099 4237 7104
      4239 7104 4239 7107 4238 7105 4237 7105
      4241 7113 4245 7111
TIME...MOT...LOC 2203Z 290DEG 30KT 4242 7098 

$$

JWD

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 2:25 PM EDTSpecial Weather StatementBOXFranklin65 min
Jul 7, 2:41 PM EDTSevere Thunderstorm WarningBOXFranklin49 min
Jul 7, 3:21 PM EDTSevere Thunderstorm WarningBOXFranklin, Worcester28 min
Jul 7, 3:46 PM EDTSevere Thunderstorm WarningBOXFranklin, Middlesex, Worcester44 min
Jul 7, 4:21 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Worcester39 min
Jul 7, 4:24 PM EDTFlash Flood WarningBOXMiddlesex, Worcester111 min
Jul 7, 4:41 PM EDTSevere Thunderstorm WarningBOXFranklin, Worcester37 min
Jul 7, 4:48 PM EDTTornado WarningBOXMiddlesex, Worcester42 min
Jul 7, 5:12 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Worcester36 min
Jul 7, 5:29 PM EDTSevere Thunderstorm WarningBOXEssex, Middlesex, Suffolk46 min
Jul 7, 5:32 PM EDTSpecial Marine WarningBOX58 min
Jul 7, 5:40 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Worcester36 min
Jul 7, 6:11 PM EDTSevere Thunderstorm WarningBOXMiddlesex34 min
Jul 7, 6:33 PM EDTSevere Thunderstorm WarningBOXEssex, Middlesex, Suffolk27 min
Jul 7, 6:36 PM EDTSpecial Marine WarningBOX24 min
Jul 7, 6:52 PM EDTSpecial Weather StatementBOXFranklin, Hampshire, Worcester83 min
Jul 7, 7:16 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire44 min

Nearby

Tornado Warnings in Massachusetts, 2014Every tornado warning in 2014Tornadoes in 2014

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.