Alert archive / Massachusetts / Tornado Warnings in 2014

Tornado Warning 4, NWS Boston/Norton, MA

July 28, 2014Essex County, Massachusetts

NWS Boston/Norton, MA issued this tornado warning at Jul 28, 2014, 9:44 AM EDT for Essex County, Massachusetts. It was in force for 25 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 28, 2014, 9:44 AM EDT (13:44 UTC)
Expired: Jul 28, 2014, 10:09 AM EDT
In force: 25 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

County Essex County, MA

The radar

The Boston radar (KBOX), 64 km from the middle of the area, began a volume at 13:43 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, 1.7 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-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: 454 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 709 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

400 
WFUS51 KBOX 281344
TORBOX
MAC009-281430-
/O.NEW.KBOX.TO.W.0004.140728T1344Z-140728T1430Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
944 AM EDT MON JUL 28 2014

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL ESSEX COUNTY IN NORTHEAST MASSACHUSETTS...

* UNTIL 1030 AM EDT
    
* AT 944 AM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  OVER SWAMPSCOTT...OR OVER SALEM...AND WAS MOVING NORTHEAST AT 55
  MPH.

* SOME LOCATIONS IMPACTED INCLUDE...
  LYNN...REVERE...PEABODY...SALEM...BEVERLY...SAUGUS...DANVERS...
  WAKEFIELD...MARBLEHEAD...NORTH READING...SWAMPSCOTT...LYNNFIELD...
  MIDDLETON...MANCHESTER AND NAHANT.

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 4257 7078 4255 7080 4254 7090 4253 7090
      4254 7087 4250 7089 4252 7084 4251 7085
      4249 7086 4246 7094 4242 7091 4242 7094
      4245 7094 4243 7100 4247 7105 4251 7104
      4257 7105 4257 7103 4261 7105
TIME...MOT...LOC 1344Z 239DEG 48KT 4248 7091 
$$

KJC

1 follow-up statement

773 
WWUS51 KBOX 281409
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
1009 AM EDT MON JUL 28 2014

MAC009-281419-
/O.CAN.KBOX.TO.W.0004.000000T0000Z-140728T1430Z/
ESSEX MA-
1009 AM EDT MON JUL 28 2014

...THE TORNADO WARNING FOR SOUTH CENTRAL ESSEX COUNTY IS CANCELED...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND EXITED THE 
WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELED.

LAT...LON 4257 7078 4255 7080 4254 7090 4253 7090
      4254 7087 4250 7089 4252 7084 4251 7085
      4249 7086 4246 7094 4242 7091 4242 7094
      4245 7094 4243 7100 4247 7105 4251 7104
      4257 7105 4257 7103 4261 7105
TIME...MOT...LOC 1406Z 239DEG 48KT 4310 6948 

$$

KJC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 8:25 PM EDT	Special Weather Statement	BOX	Hampden	50 min
Jul 28, 5:46 AM EDT	Special Weather Statement	BOX	Hampshire	59 min
Jul 28, 6:54 AM EDT	Severe Thunderstorm Warning	BOX	Franklin	51 min
Jul 28, 8:44 AM EDT	Special Weather Statement	BOX	Suffolk	46 min
Jul 28, 8:50 AM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex, Norfolk, Suffolk	40 min
Jul 28, 9:18 AM EDT	Areal Flood Advisory	BOX	Essex, Middlesex, Norfolk, Suffolk	57 min
Jul 28, 9:33 AM EDT	Flash Flood Warning	BOX	Essex, Middlesex, Suffolk	117 min
Jul 28, 10:19 AM EDT	Special Marine Warning	BOX		41 min
Jul 28, 2:40 PM EDT	Special Weather Statement	BOX	Franklin	50 min
Jul 28, 3:32 PM EDT	Special Weather Statement	BOX	Franklin	43 min
Jul 28, 3:58 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Worcester	62 min
Jul 28, 4:00 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Worcester	47 min
Jul 28, 4:14 PM EDT	Areal Flood Advisory	BOX	Franklin, Worcester	2 hr
Jul 28, 4:17 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	43 min
Jul 28, 4:24 PM EDT	Tornado Warning	BOX	Hampden, Worcester	21 min
Jul 28, 5:43 PM EDT	Areal Flood Advisory	BOX	Franklin, Worcester	2 hr
Jul 28, 5:47 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex	58 min
Jul 28, 5:48 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	34 min
Jul 28, 6:18 PM EDT	Areal Flood Advisory	BOX	Essex, Middlesex	117 min
Jul 28, 6:22 PM EDT	Severe Thunderstorm Warning	BOX	Essex	23 min
Jul 28, 6:43 PM EDT	Special Marine Warning	BOX		62 min

Nearby

Tornado Warnings in Massachusetts, 2014 Every tornado warning in 2014 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.