Alert archive / Massachusetts / Tornado Warnings in 2013

Tornado Warning 7, NWS Boston/Norton, MA

July 1, 2013Essex County, Middlesex County, Massachusetts

NWS Boston/Norton, MA issued this tornado warning at Jul 1, 2013, 3:35 PM EDT for Essex County, Middlesex County, Massachusetts. It was in force for 40 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, 3:35 PM EDT (19:35 UTC)
Expired: Jul 1, 2013, 4:15 PM EDT
In force: 40 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

Counties Essex County, MA, Middlesex County, MA

The radar

The Boston radar (KBOX), 71 km from the middle of the area, began a volume at 19:38 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, 7.6 hours before the alert went out and 136 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: 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.

536 
WFUS51 KBOX 011935
TORBOX
MAC009-017-012015-
/O.NEW.KBOX.TO.W.0007.130701T1935Z-130701T2015Z/

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

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

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

* UNTIL 415 PM EDT
    
* AT 334 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  NEAR BILLERICA...OR 7 MILES SOUTH OF LOWELL...AND MOVING NORTHEAST
  AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LAWRENCE...BEVERLY...NORTH ANDOVER...GROVELAND...PEABODY...
  HAMILTON...WENHAM...WOBURN...CHELMSFORD...CARLISLE...BEDFORD...
  LEXINGTON...DANVERS...WAKEFIELD...READING...BURLINGTON...
  WILMINGTON...LYNNFIELD...NORTH READING AND MIDDLETON.

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 4257 7078 4242 7131 4258 7143 4281 7094
TIME...MOT...LOC 1935Z 243DEG 21KT 4254 7129 

$$

RLG

1 follow-up statement

518 
WWUS51 KBOX 011947
SVSBOX

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

MAC009-017-012015-
/O.CON.KBOX.TO.W.0007.000000T0000Z-130701T2015Z/
MIDDLESEX MA-ESSEX MA-
347 PM EDT MON JUL 1 2013

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM EDT FOR
NORTHEASTERN MIDDLESEX AND CENTRAL ESSEX COUNTIES...
    
AT 342 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR
TEWKSBURY...OR 6 MILES SOUTH OF LAWRENCE...MOVING NORTHEAST AT 30
MPH.

LOCATIONS IMPACTED INCLUDE...
LAWRENCE...NORTH ANDOVER...GROVELAND...HAMILTON...READING...
WILMINGTON...MIDDLETON...NORTH READING...ANDOVER...TEWKSBURY...
TOPSFIELD...GEORGETOWN AND BOXFORD.

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 4263 7082 4249 7118 4263 7131 4281 7094
TIME...MOT...LOC 1942Z 234DEG 28KT 4261 7117 

$$

RLG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 4:01 AM EDT	Flash Flood Watch	BOX	Franklin, Hampden, Hampshire, Middlesex, Worcester	64 hr
Jul 1, 4:50 AM EDT	Rip Current Statement	BOX	Bristol, Dukes	15 hr
Jul 1, 12:02 PM EDT	Flash Flood Warning	BOX	Franklin, Hampden, Hampshire, Worcester	3 hr
Jul 1, 12:15 PM EDT	Special Weather Statement	BOX	Hampden	60 min
Jul 1, 12:49 PM EDT	Special Weather Statement	BOX	Worcester	41 min
Jul 1, 1:32 PM EDT	Flash Flood Warning	BOX	Middlesex, Worcester	4 hr
Jul 1, 1:59 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	46 min
Jul 1, 2:23 PM EDT	Areal Flood Advisory	BOX	Essex, Middlesex, Worcester	3 hr
Jul 1, 2:25 PM EDT	Tornado Warning	BOX	Essex, Middlesex, Worcester	50 min
Jul 1, 2:39 PM EDT	Flash Flood Warning	BOX	Middlesex, Worcester	3 hr
Jul 1, 2:46 PM EDT	Flash Flood Warning	BOX	Middlesex, Worcester	3 hr
Jul 1, 2:56 PM EDT	Tornado Warning	BOX	Essex	49 min
Jul 1, 3:17 PM EDT	Special Marine Warning	BOX		43 min
Jul 1, 3:27 PM EDT	Flash Flood Warning	BOX	Essex	2 hr
Jul 1, 3:57 PM EDT	Tornado Warning	BOX	Essex, Middlesex, Suffolk	33 min
Jul 1, 4:00 PM EDT	Special Marine Warning	BOX		60 min
Jul 1, 4:03 PM EDT	Small Craft Advisory for Hazardous Seas	BOX		48 hr
Jul 1, 4:59 PM EDT	Special Marine Warning	BOX		61 min
Jul 1, 5:22 PM EDT	Areal Flood Advisory	BOX	Essex	113 min

Nearby

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