Alert archive / Massachusetts / Special Weather Statements in 2016

Special Weather Statement, NWS Boston/Norton, MA

August 16, 2016Hampden County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Aug 16, 2016, 3:21 PM EDT for Hampden County, Massachusetts. It was in force for 39 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
Aug 16, 2016, 3:21 PM EDT (19:21 UTC)
Expired
Aug 16, 2016, 4:00 PM EDT
In force
39 min
Issued by
NWS Boston/Norton, MA

County Hampden County, MA

The radar

The Boston radar (KBOX), 105 km from the middle of the area, began a volume at 19:21 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

Brookhaven, NY (KOKX), launched 12:00Z, 7.4 hours before the alert went out and 130 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, Brookhaven, NY at 12:00Z on 2016-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1793 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, Brookhaven, NY at 12:00Z on 2016-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 square meters per square second.1939Sfc1 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
1793 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
635 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
125 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.5

Open this sounding in Storm Lab

The text

As transmitted.

597 
WWUS81 KBOX 161921
SPSBOX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
321 PM EDT TUE AUG 16 2016
 
CTZ003-MAZ011-162000-
TOLLAND CT-EASTERN HAMPDEN MA-
321 PM EDT TUE AUG 16 2016

...STRONG THUNDERSTORM MOVING INTO NORTHERN TOLLAND COUNTY AND MAY
AFFECT EASTERN HAMPDEN COUNTY...

AT 318 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
ELLINGTON...OR NEAR ENFIELD...MOVING NORTHEAST AT 25 MPH.

WIND GUSTS UP TO 50 MPH AND HEAVY DOWNPOURS WILL ACCOMPANY THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
ELLINGTON...STAFFORD...SOMERS...MONSON...HAMPDEN...BRIMFIELD...
HOLLAND...WALES AND UNION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GET INDOORS WHEN THIS STORM APPROACHES. WINDS MAY BE STRONG ENOUGH TO
PRODUCE MINOR DAMAGE...SUCH AS A FEW DOWNED BRANCHES.

DO NOT DRIVE THROUGH FLOODED ROADS OR UNDERPASSES. AVOID LOW LYING
AREAS NEAR SMALL STREAMS.

&&

LAT...LON 4195 7249 4198 7250 4215 7221 4198 7210
      4191 7250 4194 7252
TIME...MOT...LOC 1918Z 239DEG 22KT 4195 7250 

$$

THOMPSON

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 3:36 PM EDTSpecial Weather StatementBOXHampden39 min
Aug 16, 3:41 PM EDTSevere Thunderstorm WarningBOXWorcester34 min
Aug 16, 4:20 PM EDTSpecial Weather StatementBOXWorcester40 min
Aug 16, 4:52 PM EDTSpecial Weather StatementBOXNorfolk38 min
Aug 16, 5:01 PM EDTSpecial Weather StatementBOXWorcester59 min
Aug 16, 5:07 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Worcester53 min
Aug 16, 1:45 PM EDTSpecial Weather StatementBOXKent60 min
Aug 16, 2:20 PM EDTSpecial Weather StatementBOXProvidence55 min
Aug 16, 4:21 PM EDTSpecial Weather StatementBOXProvidence39 min
Aug 16, 12:38 PM EDTSpecial Weather StatementBOX37 min
Aug 16, 1:20 PM EDTSpecial Weather StatementBOX55 min
Aug 16, 2:42 PM EDTSpecial Weather StatementBOX63 min
Aug 16, 3:06 PM EDTSevere Thunderstorm WarningBOXCapitol Planning Region39 min
Aug 16, 3:26 PM EDTSpecial Weather StatementBOX49 min
Aug 16, 4:16 PM EDTSpecial Weather StatementBOX44 min

Nearby

Special Weather Statements in Massachusetts, 2016Every special weather statement in 2016

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.