Alert archive / Massachusetts / Special Weather Statements in 2017

Special Weather Statement, NWS Boston/Norton, MA

June 30, 2017Hampshire County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Jun 30, 2017, 4:34 PM EDT for Hampshire County, Massachusetts. It was in force for 56 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 30, 2017, 4:34 PM EDT (20:34 UTC)
Expired
Jun 30, 2017, 5:30 PM EDT
In force
56 min
Issued by
NWS Boston/Norton, MA

County Hampshire County, MA

The radar

The Albany radar (KENX), 89 km from the middle of the area, began a volume at 20:34 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

Albany, NY (KALY), launched 12:00Z, 8.6 hours before the alert went out and 73 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, Albany, NY at 12:00Z on 2017-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 26 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2017-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 156 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
26 J/kg
Mixed-layer CIN
-117 J/kg
Mixed-layer LCL
1165 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
156 m²/s²
0-3 km storm-relative helicity
193 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Boston/Norton, MA wrote its last area forecast discussion before this special weather statement went out at Jun 30, 4:29 PM EDT, 5 minutes earlier.

Area forecast discussion, Jun 30, 4:29 PM EDT, 5 minutes before
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Hazardous weather outlook, Jun 30, 4:00 PM EDT, 34 minutes before
Hazardous Weather Outlook
National Weather Service Taunton MA
400 PM EDT Fri Jun 30 2017

CTZ002>004-MAZ002>004-008>012-012000-
Hartford CT-Tolland CT-Windham CT-Western Franklin MA-
Eastern Franklin MA-Northern Worcester MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-
400 PM EDT Fri Jun 30 2017

...SEVERE THUNDERSTORM WATCH 385 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for northern Connecticut, central
Massachusetts and western Massachusetts.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Late Saturday into Saturday night...

There is a low risk for a few strong thunderstorms across Southern
New England.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

MAZ005>007-013>024-026-RIZ001>008-012000-
Central Middlesex MA-Western Essex MA-Eastern Essex MA-
Western Norfolk MA-Southeast Middlesex MA-Suffolk MA-
Eastern Norfolk MA-Northern Bristol MA-Western Plymouth MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Barnstable MA-Dukes MA-Nantucket MA-Northern Middlesex MA-
Northwest Providence RI-Southeast Providence RI-Western Kent RI-
Eastern Kent RI-Bristol RI-Washington RI-Newport RI-Block Island RI-
400 PM EDT Fri Jun 30 2017

This Hazardous Weather Outlook is for eastern Massachusetts,
northeastern Massachusetts, southeastern Massachusetts, and Rhode
Island.

.DAY ONE...This Afternoon and Tonight.

A few strong thunderstorms may sweep into eastern areas of Southern
New England during this evening. Main risk will be gusty winds,
heavy rain, and lightning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Late Saturday into Saturday night...

There is a low risk for a few strong thunderstorms across Southern
New England.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

ANZ230>237-250-251-254>256-012000-
Boston Harbor-Cape Cod Bay-Nantucket Sound-Vineyard Sound-
Buzzards Bay-Rhode Island Sound-Narragansett Bay-Block Island Sound-
Coastal waters east of Ipswich Bay and the Stellwagen Bank National
Marine Sanctuary-Massachusetts Bay and Ipswich Bay-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
Coastal Waters extending out to 25 nm South of Marthas Vineyard and
Nantucket-
Coastal Waters from Montauk NY to Marthas Vineyard extending out to
20 nm South of Block Island-
400 PM EDT Fri Jun 30 2017

This Hazardous Weather Outlook is for Massachusetts and Rhode
Island coastal waters.

.DAY ONE...This Afternoon and Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No Hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

For the latest updates...please visit our webpage at
www.weather.gov/boston

You can follow us on Facebook at
www.facebook.com/NWSBoston

You can follow us on Twitter at
@NWSBoston

In the hours before

Special weather statement, Jun 30, 4:34 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Taunton MA
434 PM EDT FRI JUN 30 2017

MAZ002-008-009-302130-
Western Franklin MA-Western Hampshire MA-Western Hampden MA-
434 PM EDT FRI JUN 30 2017

...Line of strong thunderstorms moving into western Massachusetts...

At 428 PM EDT, Doppler radar showed a line of strong thunderstorms
in eastern New York state approaching Berkshire County. The line of
storms was moving to the east at 35 mph. Scattered showers preceded
this line.

The storms will be moving into western portions of Franklin...
Hampshire...and Hampden Counties between 5 and 515 PM. Frequent
lightning, heavy downpours, and wind gusts to 30 mph will accompany
these storms.

A Severe Thunderstorm Watch remains in effect for western
Massachusetts until 9 PM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Get indoors when these storms approach. Winds may be strong enough
to produce minor damage, such as a few downed branches. Lightning
can strike far away from the storm. Go inside a building or vehicle.
Wait at least 30 minutes until after the storm has passed to resume
outdoor activities.

&&

LAT...LON 4223 7301 4231 7300 4231 7303 4233 7306
      4238 7307 4238 7301 4239 7301 4263 7295
      4266 7295 4267 7300 4270 7295 4270 7302
      4274 7302 4273 7272 4213 7306 4215 7307
TIME...MOT...LOC 2028Z 257DEG 29KT 4266 7336 4183 7383

FIELD

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 4:59 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampshire46 min
Jun 30, 5:31 PM EDTSevere Thunderstorm WarningBOXHampden, Hampshire44 min
Jun 30, 6:29 PM EDTSpecial Weather StatementBOXWorcester46 min
Jun 30, 7:39 PM EDTSpecial Weather StatementBOXMiddlesex51 min
Jun 30, 6:06 PM EDTSevere Thunderstorm WarningBOXCapitol Planning Region24 min
Jun 30, 6:17 PM EDTAreal Flood AdvisoryBOXCapitol Planning Region118 min
Jun 30, 6:32 PM EDTSpecial Weather StatementBOX43 min
Jun 30, 6:53 PM EDTSpecial Weather StatementBOX37 min

Nearby

Special Weather Statements in Massachusetts, 2017Every special weather statement in 2017

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.