Alert archive / Massachusetts / Tornado Warnings in 2015

Tornado Warning 4, NWS Boston/Norton, MA

June 23, 2015Plymouth County, Massachusetts

NWS Boston/Norton, MA issued this tornado warning at Jun 23, 2015, 6:10 PM EDT for Plymouth County, Massachusetts. It was in force for 30 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
Jun 23, 2015, 6:10 PM EDT (22:10 UTC)
Expired
Jun 23, 2015, 6:40 PM EDT
In force
30 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

County Plymouth County, MA

The radar

The Boston radar (KBOX), 37 km from the middle of the area, began a volume at 22:14 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 23, 3:47 PM EDTTornado WatchSPC7 hr

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 10.2 hours before the alert went out and 70 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 2015-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 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, Chatham, MA at 12:00Z on 2015-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 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
3 J/kg
Mixed-layer CIN
-165 J/kg
Mixed-layer LCL
1240 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
135 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.

186 
WFUS51 KBOX 232210
TORBOX
MAC023-232300-
/O.NEW.KBOX.TO.W.0004.150623T2210Z-150623T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
610 PM EDT TUE JUN 23 2015

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL PLYMOUTH COUNTY IN SOUTHEASTERN MASSACHUSETTS...

* UNTIL 700 PM EDT
    
* AT 610 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  OVER EAST BRIDGEWATER...OR OVER BRIDGEWATER...AND WAS MOVING EAST
  AT 35 MPH. A TORNADO MAY TOUCH DOWN AT ANY TIME!

* SOME LOCATIONS IMPACTED INCLUDE...
  BROCKTON...PLYMOUTH...BRIDGEWATER...MARSHFIELD...MIDDLEBOROUGH...
  PEMBROKE...DUXBURY...WHITMAN...EAST BRIDGEWATER...KINGSTON...
  CARVER...HANSON...HALIFAX...WEST BRIDGEWATER AND PLYMPTON.

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 4197 7104 4208 7102 4210 7066 4208 7064
      4205 7066 4202 7062 4204 7066 4202 7068
      4200 7064 4202 7061 4201 7060 4199 7063
      4201 7071 4197 7067 4198 7065 4195 7065
      4195 7058 4193 7054 4187 7053
TIME...MOT...LOC 2210Z 273DEG 32KT 4200 7095 
$$

JWD/MANNING
2 follow-up statements
056 
WWUS51 KBOX 232225
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
625 PM EDT TUE JUN 23 2015

MAC023-232300-
/O.CON.KBOX.TO.W.0004.000000T0000Z-150623T2300Z/
PLYMOUTH MA-
625 PM EDT TUE JUN 23 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR EAST
CENTRAL PLYMOUTH COUNTY...
    
AT 624 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED OVER
KINGSTON...OR 9 MILES SOUTH OF MARSHFIELD...MOVING EAST AT 35 MPH.

AS OF 624 PM...THERE HAS BEEN NO CONFIRMATION OF A TORNADO. HOWEVER 
A TORNADO MAY STILL TOUCH DOWN AT ANY TIME!

LOCATIONS IMPACTED INCLUDE...
PLYMOUTH...MARSHFIELD...PEMBROKE...DUXBURY...KINGSTON...CARVER...
HANSON...HALIFAX AND PLYMPTON.

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.

&&

LAT...LON 4208 7085 4210 7066 4208 7064 4205 7066
      4202 7062 4204 7066 4202 7068 4200 7064
      4202 7061 4201 7060 4199 7063 4201 7071
      4197 7067 4198 7065 4195 7065 4195 7058
      4193 7054 4187 7053 4195 7084
TIME...MOT...LOC 2224Z 273DEG 32KT 4199 7077 

$$

JWD/MANNING
421 
WWUS51 KBOX 232240
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
640 PM EDT TUE JUN 23 2015

MAC023-232249-
/O.CAN.KBOX.TO.W.0004.000000T0000Z-150623T2300Z/
PLYMOUTH MA-
640 PM EDT TUE JUN 23 2015

...THE TORNADO WARNING FOR EAST CENTRAL PLYMOUTH COUNTY IS
CANCELED...

AS OF 639 PM...THERE HAS BEEN NO CONFIRMATION OF A TORNADO.
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS
AND EXITED THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELED.

&&

LAT...LON 4208 7085 4210 7066 4208 7064 4205 7066
      4202 7062 4204 7066 4202 7068 4200 7064
      4202 7061 4201 7060 4199 7063 4201 7071
      4197 7067 4198 7065 4195 7065 4195 7058
      4193 7054 4187 7053 4195 7084
TIME...MOT...LOC 2237Z 273DEG 32KT 4198 7058 

$$

JWD/MANNING

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 10:07 AM EDTSpecial Weather StatementBOXHampden, Hampshire53 min
Jun 23, 10:47 AM EDTSpecial Weather StatementBOXHampden, Worcester58 min
Jun 23, 11:17 AM EDTSpecial Marine WarningBOX58 min
Jun 23, 11:19 AM EDTSpecial Weather StatementBOXMiddlesex, Worcester41 min
Jun 23, 12:15 PM EDTSpecial Weather StatementBOXEssex30 min
Jun 23, 12:17 PM EDTSevere Thunderstorm WarningBOXEssex14 min
Jun 23, 12:20 PM EDTTornado WarningBOXEssex11 min
Jun 23, 12:21 PM EDTSpecial Marine WarningBOX54 min
Jun 23, 1:37 PM EDTSpecial Marine WarningBOX38 min
Jun 23, 4:28 PM EDTSevere Thunderstorm WarningBOXWorcester47 min
Jun 23, 4:33 PM EDTSpecial Weather StatementBOXFranklin, Hampshire42 min
Jun 23, 5:00 PM EDTSpecial Weather StatementBOXHampden45 min
Jun 23, 5:08 PM EDTSevere Thunderstorm WarningBOXBristol, Norfolk, Worcester52 min
Jun 23, 5:16 PM EDTTornado WarningBOXBristol, Norfolk, Worcester44 min
Jun 23, 5:21 PM EDTSpecial Marine WarningBOX54 min
Jun 23, 5:42 PM EDTSevere Thunderstorm WarningBOXBristol48 min
Jun 23, 5:46 PM EDTTornado WarningBOXBristol, Norfolk, Plymouth30 min
Jun 23, 5:48 PM EDTSpecial Marine WarningBOX57 min
Jun 23, 5:52 PM EDTAreal Flood WarningBOXBristol, Norfolk, Plymouth113 min
Jun 23, 5:53 PM EDTSpecial Weather StatementBOXFranklin52 min
Jun 23, 5:57 PM EDTSevere Thunderstorm WarningBOXFranklin, Worcester48 min
Jun 23, 6:03 PM EDTSpecial Marine WarningBOX42 min
Jun 23, 6:28 PM EDTSpecial Weather StatementBOXFranklin47 min
Jun 23, 6:41 PM EDTSpecial Marine WarningBOX49 min
Jun 23, 6:50 PM EDTSpecial Weather StatementBOXWorcester40 min
Jun 23, 7:01 PM EDTSevere Thunderstorm WarningBOXFranklin, Middlesex, Worcester47 min
Jun 23, 7:19 PM EDTSevere Thunderstorm WarningBOXHampden, Hampshire41 min
Jun 23, 7:40 PM EDTSpecial Weather StatementBOXMiddlesex50 min
Jun 23, 7:45 PM EDTSevere Thunderstorm WarningBOXHampden, Worcester45 min
Jun 23, 7:59 PM EDTSpecial Marine WarningBOX61 min

Nearby

Tornado Warnings in Massachusetts, 2015Every tornado warning in 2015Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.