Alert archive / Massachusetts / Tornado Warnings in 2015

Tornado Warning 5, NWS Boston/Norton, MA

July 1, 2015Barnstable County, Massachusetts

NWS Boston/Norton, MA issued this tornado warning at Jul 1, 2015, 8:53 AM EDT for Barnstable County, Massachusetts. It was in force for 37 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, 2015, 8:53 AM EDT (12:53 UTC)
Expired
Jul 1, 2015, 9:30 AM EDT
In force
37 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon

County Barnstable County, MA

The radar

The Boston radar (KBOX), 72 km from the middle of the area, began a volume at 12:55 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, 0.9 hours before the alert went out and 36 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 2015-07-01Temperature 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 2015-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 square meters per square second.19395878Sfc1 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
1215 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
85 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.

601 
WFUS51 KBOX 011253
TORBOX
MAC001-011330-
/O.NEW.KBOX.TO.W.0005.150701T1253Z-150701T1330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
853 AM EDT WED JUL 1 2015

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN BARNSTABLE COUNTY IN SOUTHEASTERN MASSACHUSETTS...

* UNTIL 930 AM EDT
    
* AT 853 AM EDT...DOPPLER RADAR INDICATED A SEVERE SQUALL LINE
  CAPABLE OF PRODUCING A TORNADO AS WELL AS DAMAGING STRAIGHT LINE
  WINDS. THESE DANGEROUS STORMS WERE LOCATED NEAR FALMOUTH...AND WAS
  MOVING NORTHEAST AT 40 MPH.

* SOME LOCATIONS IMPACTED INCLUDE...
  BARNSTABLE...FALMOUTH...YARMOUTH...MASHPEE AND HYANNIS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

MOST TORNADOES IN NEW ENGLAND ARE OBSCURED BY RAIN. DO NOT WAIT TO
SEE THE TORNADO. TAKE COVER NOW! GO TO A BASEMENT OR INTERIOR ROOM ON
THE LOWEST FLOOR OF A STURDY BUILDING.

THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING SHORT LIVED TORNADOES
AND SIGNIFICANT WIND DAMAGE. MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4161 7026 4163 7027 4162 7033 4164 7035
      4161 7037 4161 7043 4162 7043 4159 7045
      4159 7046 4158 7046 4155 7049 4154 7063
      4157 7065 4162 7065 4171 7026 4164 7024
      4164 7028 4163 7024
TIME...MOT...LOC 1253Z 242DEG 33KT 4157 7054 
$$

MD
1 follow-up statement
667 
WWUS51 KBOX 011325
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
925 AM EDT WED JUL 1 2015

MAC001-011334-
/O.EXP.KBOX.TO.W.0005.000000T0000Z-150701T1330Z/
BARNSTABLE MA-
925 AM EDT WED JUL 1 2015

...THE TORNADO WARNING FOR SOUTHWESTERN BARNSTABLE COUNTY WILL EXPIRE
AT 930 AM EDT...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT 
OF THE AREA THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4161 7026 4163 7027 4162 7033 4164 7035
      4161 7037 4161 7043 4162 7043 4159 7045
      4159 7046 4158 7046 4155 7049 4154 7063
      4157 7065 4162 7065 4171 7026 4164 7024
      4164 7028 4163 7024
TIME...MOT...LOC 1323Z 242DEG 33KT 4157 7054 

$$

MD

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 5:16 AM EDTSpecial Marine WarningBOX59 min
Jul 1, 6:06 AM EDTSpecial Weather StatementBOXFranklin, Hampden, Hampshire54 min
Jul 1, 6:25 AM EDTAreal Flood AdvisoryBOXFranklin, Hampden, Hampshire2 hr
Jul 1, 6:41 AM EDTSpecial Marine WarningBOX64 min
Jul 1, 6:57 AM EDTSpecial Weather StatementBOXWorcester63 min
Jul 1, 7:28 AM EDTSevere Thunderstorm WarningBOXBristol, Norfolk, Plymouth, Worcester62 min
Jul 1, 7:43 AM EDTSpecial Marine WarningBOX62 min
Jul 1, 7:56 AM EDTAreal Flood AdvisoryBOXBristol, Plymouth2 hr
Jul 1, 8:19 AM EDTSpecial Weather StatementBOXDukes56 min
Jul 1, 8:49 AM EDTSevere Thunderstorm WarningBOXBarnstable26 min
Jul 1, 8:55 AM EDTSpecial Marine WarningBOX50 min
Jul 1, 9:16 AM EDTSpecial Weather StatementBOXBarnstable59 min
Jul 1, 9:34 AM EDTSevere Thunderstorm WarningBOXDukes26 min
Jul 1, 9:44 AM EDTSpecial Marine WarningBOX61 min
Jul 1, 11:45 AM EDTSpecial Marine WarningBOX60 min
Jul 1, 3:31 PM EDTSpecial Weather StatementBOXEssex59 min
Jul 1, 3:36 PM EDTAreal Flood WarningBOXEssex114 min
Jul 1, 3:49 PM EDTSpecial Marine WarningBOX41 min
Jul 1, 3:50 PM EDTSevere Thunderstorm WarningBOXEssex25 min
Jul 1, 3:57 PM EDTTornado WarningBOXEssex18 min
Jul 1, 4:29 PM EDTSpecial Marine WarningBOX46 min
Jul 1, 4:47 PM EDTSevere Thunderstorm WarningBOXEssex14 min
Jul 1, 5:01 PM EDTSpecial Weather StatementBOXFranklin44 min
Jul 1, 5:48 PM EDTSpecial Weather StatementBOXFranklin, Hampden, Hampshire57 min
Jul 1, 6:41 PM EDTSpecial Weather StatementBOXWorcester49 min
Jul 1, 7:04 PM EDTSpecial Weather StatementBOXEssex41 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.