Alert archive / Massachusetts / Special Weather Statements in 2019

Special Weather Statement, NWS Boston/Norton, MA

August 3, 2019Franklin County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Aug 3, 2019, 3:00 PM EDT for Franklin 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
Aug 3, 2019, 3:00 PM EDT (19:00 UTC)
Expired
Aug 3, 2019, 3:30 PM EDT
In force
30 min
Issued by
NWS Boston/Norton, MA

County Franklin County, MA

The radar

The Boston radar (KBOX), 114 km from the middle of the area, began a volume at 18:59 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, 7.0 hours before the alert went out and 123 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 2019-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 122 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 2019-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 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
122 J/kg
Mixed-layer CIN
-131 J/kg
Mixed-layer LCL
1170 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
86 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 Aug 3, 2:11 PM EDT, 49 minutes earlier.

Area forecast discussion, Aug 3, 2:11 PM EDT, 49 minutes before
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Hazardous weather outlook, Aug 3, 11:04 AM EDT, 3 hours 56 minutes before
Hazardous Weather Outlook
National Weather Service Boston/Norton MA
1104 AM EDT Sat Aug 3 2019

CTZ002>004-MAZ002>016-026-041515-
Hartford CT-Tolland CT-Windham CT-Western Franklin MA-
Eastern Franklin MA-Northern Worcester MA-Central Middlesex MA-
Western Essex MA-Eastern Essex MA-Western Hampshire MA-
Western Hampden MA-Eastern Hampshire MA-Eastern Hampden MA-
Southern Worcester MA-Western Norfolk MA-Southeast Middlesex MA-
Suffolk MA-Eastern Norfolk MA-Northern Middlesex MA-
1104 AM EDT Sat Aug 3 2019

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

.DAY ONE...This afternoon and tonight.

Isolated to scattered thunderstorms are expected this afternoon into
early this evening. There is the potential for a couple of strong or
severe thunderstorms, with localized strong wind gusts being the
main threat.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

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

ANZ230>232-234>237-250-251-254>256-041515-
Boston Harbor-Cape Cod Bay-Nantucket 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-
1104 AM EDT Sat Aug 3 2019

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

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ233-MAZ017>024-RIZ001>008-041515-
Vineyard Sound-Northern Bristol MA-Western Plymouth MA-
Eastern Plymouth MA-Southern Bristol MA-Southern Plymouth MA-
Barnstable MA-Dukes MA-Nantucket MA-Northwest Providence RI-
Southeast Providence RI-Western Kent RI-Eastern Kent RI-Bristol RI-
Washington RI-Newport RI-Block Island RI-
1104 AM EDT Sat Aug 3 2019

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

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

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

You can follow us on Facebook at
www.facebook.com/us.nationalweatherservice.boston.gov

You can follow us on Twitter at
@NWSBoston

In the hours before

Special weather statement, Aug 3, 2:35 PM EDT, 25 minutes before
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Special weather statement, Aug 3, 2:36 PM EDT, 24 minutes before
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Local storm report, Aug 3, 2:39 PM EDT, 21 minutes before
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Local storm report, Aug 3, 2:40 PM EDT, 20 minutes before
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Special weather statement, Aug 3, 2:50 PM EDT, 10 minutes before
Special Weather Statement
National Weather Service Boston/Norton MA
250 PM EDT Sat Aug 3 2019

MAZ003-004-031915-
Northern Worcester MA-Eastern Franklin MA-
250 PM EDT Sat Aug 3 2019

...STRONG THUNDERSTORM...

At 248 PM EDT, Doppler radar was tracking a severe thunderstorm over
Richmond, or 10 miles north of Orange, moving east at 15 mph.

Penny size hail and wind gusts up to 50 mph may extend south of the
New Hampshire border into northern Massachusetts.

Locations impacted include...
Winchendon, Fitzwilliam, Royalston and Warwick.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Get indoors when this storm approaches. Winds may be strong enough to
produce minor damage, such as a few downed branches.

&&

LAT...LON 4272 7207 4265 7205 4269 7237 4272 7235
TIME...MOT...LOC 1848Z 281DEG 13KT 4275 7225

Belk
Special weather statement, Aug 3, 3:00 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Boston/Norton MA
300 PM EDT Sat Aug 3 2019

MAZ003-004-010-031930-
Northern Worcester MA-Eastern Franklin MA-Eastern Hampshire MA-
300 PM EDT Sat Aug 3 2019

...STRONG THUNDERSTORM...

At 300 PM EDT, Doppler radar was tracking a strong thunderstorm over
Amherst, moving east at 25 mph.

Pea size hail and winds in excess of 40 mph will accompany this
storm.

Locations impacted include...
Amherst, South Hadley, Belchertown, Athol, Ware, Granby, Barre,
Hadley, Sunderland, Hatfield, Hardwick, Leverett, Shutesbury,
Whately, Pelham, Petersham, New Braintree, New Salem and Wendell.

This storm may intensify and become capable of producing damage.
Stay tuned for updated statements and possible warnings.

LAT...LON 4227 7255 4244 7261 4257 7219 4231 7209
TIME...MOT...LOC 1900Z 255DEG 20KT 4238 7249

Belk

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 12:46 PM EDTSpecial Weather StatementBOXHampshire44 min
Aug 3, 1:03 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire, Worcester57 min
Aug 3, 1:13 PM EDTSpecial Weather StatementBOXFranklin32 min
Aug 3, 1:16 PM EDTSpecial Weather StatementBOXHampden29 min
Aug 3, 1:33 PM EDTSevere Thunderstorm WarningBOXHampden, Hampshire26 min
Aug 3, 1:42 PM EDTSpecial Weather StatementBOXWorcester48 min
Aug 3, 1:44 PM EDTSevere Thunderstorm WarningBOXFranklin, Middlesex, Worcester61 min
Aug 3, 1:56 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampden, Hampshire, Worcester64 min
Aug 3, 2:12 PM EDTSpecial Weather StatementBOXFranklin33 min
Aug 3, 2:35 PM EDTSpecial Weather StatementBOXHampshire25 min
Aug 3, 2:36 PM EDTSpecial Weather StatementBOXHampshire24 min
Aug 3, 3:03 PM EDTSpecial Weather StatementBOXHampshire42 min
Aug 3, 3:27 PM EDTSpecial Weather StatementBOXWorcester33 min
Aug 3, 3:35 PM EDTSpecial Weather StatementBOXHampden25 min
Aug 3, 4:00 PM EDTSpecial Weather StatementBOXHampden30 min
Aug 3, 4:18 PM EDTSevere Thunderstorm WarningBOXHampden, Hampshire57 min
Aug 3, 4:39 PM EDTFlash Flood WarningBOXHampden, Hampshire2 hr
Aug 3, 5:04 PM EDTSpecial Weather StatementBOXHampden26 min
Aug 3, 5:10 PM EDTSpecial Weather StatementBOXHampden35 min
Aug 3, 2:50 PM EDTSpecial Weather StatementBOXCheshire25 min

Nearby

Special Weather Statements in Massachusetts, 2019Every special weather statement in 2019

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.