Alert archive / Massachusetts / Tornado Warnings in 2013

Tornado Warning 6, NWS Boston/Norton, MA

July 1, 2013Essex County, Massachusetts

NWS Boston/Norton, MA issued this tornado warning at Jul 1, 2013, 2:56 PM EDT for Essex County, Massachusetts. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 1, 2013, 2:56 PM EDT (18:56 UTC)
Expired
Jul 1, 2013, 3:45 PM EDT
In force
49 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

County Essex County, MA

The radar

The Boston radar (KBOX), 75 km from the middle of the area, began a volume at 18:58 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.

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 6.9 hours before the alert went out and 122 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 2013-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 293 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 12:00Z on 2013-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 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
293 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
441 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
115 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.

564 
WFUS51 KBOX 011856
TORBOX
MAC009-011945-
/O.NEW.KBOX.TO.W.0006.130701T1856Z-130701T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
256 PM EDT MON JUL 1 2013

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL ESSEX COUNTY IN NORTHEASTERN MASSACHUSETTS...

* UNTIL 345 PM EDT
    
* AT 254 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  NEAR WENHAM...OR 3 MILES WEST OF BEVERLY...AND WAS MOVING EAST AT
  25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BEVERLY...GLOUCESTER...PEABODY...HAMILTON...WENHAM...DANVERS...
  MIDDLETON...ROCKPORT...IPSWICH...TOPSFIELD...ESSEX AND MANCHESTER.

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...A MOBILE HOME OR OUTDOORS...GET TO THE
CLOSEST SHELTER. PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4267 7073 4265 7076 4269 7064 4266 7059
      4258 7066 4261 7066 4253 7078 4256 7079
      4254 7089 4253 7090 4254 7088 4252 7089
      4250 7089 4251 7082 4250 7083 4246 7095
      4263 7104 4272 7078
TIME...MOT...LOC 1856Z 251DEG 22KT 4258 7090 

$$

RLG
2 follow-up statements
791 
WWUS51 KBOX 011912
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
312 PM EDT MON JUL 1 2013

MAC009-011945-
/O.CON.KBOX.TO.W.0006.000000T0000Z-130701T1945Z/
ESSEX MA-
312 PM EDT MON JUL 1 2013

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM EDT FOR CENTRAL
ESSEX COUNTY...
    
AT 258 PM EDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD 
NEAR DANVERS. A TORNADO MAY DEVELOP AT ANY TIME. THIS DANGEROUS 
STORM WAS LOCATED NEAR ESSEX...OR 5 MILES NORTHEAST OF 
BEVERLY...MOVING NORTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
BEVERLY...GLOUCESTER...PEABODY...HAMILTON...WENHAM...DANVERS...
MIDDLETON...ROCKPORT...IPSWICH...TOPSFIELD...ESSEX AND MANCHESTER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4267 7073 4265 7076 4269 7064 4266 7059
      4258 7066 4261 7066 4253 7078 4256 7079
      4254 7089 4253 7090 4254 7088 4252 7089
      4250 7089 4251 7082 4250 7083 4246 7095
      4263 7104 4272 7078
TIME...MOT...LOC 1907Z 247DEG 21KT 4263 7080 

$$

RLG
178 
WWUS51 KBOX 011935
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
335 PM EDT MON JUL 1 2013

MAC009-011944-
/O.CAN.KBOX.TO.W.0006.000000T0000Z-130701T1945Z/
ESSEX MA-
335 PM EDT MON JUL 1 2013

...THE TORNADO WARNING FOR CENTRAL ESSEX COUNTY IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT 
OF THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4267 7073 4265 7076 4269 7064 4266 7059
      4258 7066 4261 7066 4253 7078 4256 7079
      4254 7089 4253 7090 4254 7088 4252 7089
      4250 7089 4251 7082 4250 7083 4246 7095
      4263 7104 4272 7078
TIME...MOT...LOC 1934Z 251DEG 22KT 4268 7058 

$$

KJC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 4:01 AM EDTFlash Flood WatchBOXFranklin, Hampden, Hampshire, Middlesex, Worcester64 hr
Jul 1, 4:50 AM EDTRip Current StatementBOXBristol, Dukes15 hr
Jul 1, 12:02 PM EDTFlash Flood WarningBOXFranklin, Hampden, Hampshire, Worcester3 hr
Jul 1, 12:15 PM EDTSpecial Weather StatementBOXHampden60 min
Jul 1, 12:49 PM EDTSpecial Weather StatementBOXWorcester41 min
Jul 1, 1:32 PM EDTFlash Flood WarningBOXMiddlesex, Worcester4 hr
Jul 1, 1:59 PM EDTSevere Thunderstorm WarningBOXHampden46 min
Jul 1, 2:23 PM EDTAreal Flood AdvisoryBOXEssex, Middlesex, Worcester3 hr
Jul 1, 2:25 PM EDTTornado WarningBOXEssex, Middlesex, Worcester50 min
Jul 1, 2:39 PM EDTFlash Flood WarningBOXMiddlesex, Worcester3 hr
Jul 1, 2:46 PM EDTFlash Flood WarningBOXMiddlesex, Worcester3 hr
Jul 1, 3:17 PM EDTSpecial Marine WarningBOX43 min
Jul 1, 3:27 PM EDTFlash Flood WarningBOXEssex2 hr
Jul 1, 3:35 PM EDTTornado WarningBOXEssex, Middlesex40 min
Jul 1, 3:57 PM EDTTornado WarningBOXEssex, Middlesex, Suffolk33 min
Jul 1, 4:00 PM EDTSpecial Marine WarningBOX60 min
Jul 1, 4:03 PM EDTSmall Craft Advisory for Hazardous SeasBOX48 hr
Jul 1, 4:59 PM EDTSpecial Marine WarningBOX61 min
Jul 1, 5:22 PM EDTAreal Flood AdvisoryBOXEssex113 min

Nearby

Tornado Warnings in Massachusetts, 2013Every tornado warning in 2013Tornadoes in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.