Alert archive / Massachusetts / Special Weather Statements in 2018

Special Weather Statement, NWS Boston/Norton, MA

August 14, 2018Middlesex County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Aug 14, 2018, 5:22 PM EDT for Middlesex County, Massachusetts. It was in force for 38 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 14, 2018, 5:22 PM EDT (21:22 UTC)
Expired
Aug 14, 2018, 6:00 PM EDT
In force
38 min
Issued by
NWS Boston/Norton, MA

County Middlesex County, MA

The radar

The Boston radar (KBOX), 84 km from the middle of the area, began a volume at 21:24 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, 9.4 hours before the alert went out and 176 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 2018-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 65 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 2018-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 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
65 J/kg
Mixed-layer CIN
-77 J/kg
Mixed-layer LCL
614 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
63 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 14, 4:19 PM EDT, 1 hour 3 minutes earlier.

Area forecast discussion, Aug 14, 4:19 PM EDT, 1 hour 3 minutes before
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Hazardous weather outlook, Aug 14, 3:57 AM EDT, 13 hours 25 minutes before
Hazardous Weather Outlook
National Weather Service Boston/Norton MA
357 AM EDT Tue Aug 14 2018

CTZ002>004-MAZ002>014-017-018-026-RIZ001>008-150800-
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-
Northern Bristol MA-Western Plymouth 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-
357 AM EDT Tue Aug 14 2018

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

.DAY ONE...Today and tonight.

Scattered showers and thunderstorms today may produce heavy rainfall
and localized flooding, mainly across interior MA and northern CT.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Friday into Saturday, locally heavy rainfall is again possible from
scattered showers and thunderstorms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MAZ015-016-019>024-150800-
Suffolk MA-Eastern Norfolk MA-Eastern Plymouth MA-
Southern Bristol MA-Southern Plymouth MA-Barnstable MA-Dukes MA-
Nantucket MA-
357 AM EDT Tue Aug 14 2018

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EDT THIS MORNING...

This Hazardous Weather Outlook is for eastern Massachusetts and
southeastern Massachusetts.

.DAY ONE...Today and tonight.

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

   Dense Fog Advisory.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Friday into Saturday, locally heavy rainfall is again possible from
scattered showers and thunderstorms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

ANZ230>237-250-251-254>256-150800-
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-
357 AM EDT Tue Aug 14 2018

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

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

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/NWSBoston

You can follow us on Twitter at
@NWSBoston

In the hours before

Local storm report, Aug 14, 2:47 PM EDT, 2 hours 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
247 PM EDT TUE AUG 14 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1230 PM     TSTM WND DMG     WARE                    42.25N  72.25W
08/14/2018                   HAMPSHIRE          MA   AMATEUR RADIO

            TREE DOWN ON WIRES ON CRESCENT STREET

1244 PM     TSTM WND DMG     PETERSHAM               42.48N  72.18W
08/14/2018                   WORCESTER          MA   AMATEUR RADIO

            TREE DOWN ACROSS ROUTE 32

0208 PM     FLOOD            LEOMINSTER              42.52N  71.77W
08/14/2018                   WORCESTER          MA   AMATEUR RADIO

            WASHINGTON SQUARE IMPASSABLE DUE TO FLOODING. ONE CAR
            STUCK IN WATER.

0208 PM     FLOOD            LEOMINSTER              42.52N  71.77W
08/14/2018                   WORCESTER          MA   AMATEUR RADIO

            ROUTE 2 WESTBOUND EXIT 31B RAMP IS FLOODED AND
            IMPASSABLE.

0208 PM     FLOOD            LEOMINSTER              42.52N  71.77W
08/14/2018                   WORCESTER          MA   AMATEUR RADIO

            LANCASTER AND GRAHAM STREET CLOSED DUE TO FLOODING

&&

EVENT NUMBER BOX1804451
EVENT NUMBER BOX1804452
EVENT NUMBER BOX1804453
EVENT NUMBER BOX1804454
EVENT NUMBER BOX1804455

LEC
Special weather statement, Aug 14, 3:28 PM EDT, 1 hour 54 minutes before
Special Weather Statement
National Weather Service Boston/Norton MA
328 PM EDT TUE AUG 14 2018

MAZ003-004-010-142015-
Northern Worcester MA-Eastern Franklin MA-Eastern Hampshire MA-
328 PM EDT TUE AUG 14 2018

...STRONG THUNDERSTORMS DEVELOPING...

At 327 PM EDT, Doppler radar was tracking a strong thunderstorm over
Pelham, or near Amherst, moving north at 35 mph.

Winds in excess of 30 mph will accompany this storm. Torrential
rainfall with low visibility is also possible.

Locations impacted include...
Amherst, Orange, Belchertown, Athol, Winchendon, Ware, Montague,
Granby, Winchester, Northfield, Hardwick, Fitzwilliam, Leverett,
Erving, Shutesbury, Phillipston, Pelham, Royalston, Petersham and
Richmond.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Do not drive through flooded roads or underpasses. Avoid low lying
areas near small streams.

Frequent lightning was occurring. 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.

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

&&

LAT...LON 4272 7209 4225 7230 4229 7253 4273 7244
TIME...MOT...LOC 1927Z 193DEG 30KT 4236 7239

Belk
Special weather statement, Aug 14, 3:41 PM EDT, 1 hour 41 minutes before
Special Weather Statement
National Weather Service Boston/Norton MA
341 PM EDT TUE AUG 14 2018

MAZ005>007-014-015-142045-
Eastern Essex MA-Suffolk MA-Central Middlesex County MA-
Western Essex MA-Southeast Middlesex MA-
341 PM EDT TUE AUG 14 2018

...STRONG THUNDERSTORMS DEVELOPING...

At 340 PM EDT, Doppler radar was tracking a strong thunderstorm over
Saugus, moving northeast at 20 mph.

Winds in excess of 30 mph will accompany this storm. Torrential
rainfall with low visibility is also possible.

Locations impacted include...
Boston, Lynn, Malden, Medford, Revere, Peabody, Everett, Salem,
Beverly, Woburn, Chelsea, Gloucester, Melrose, Saugus, Danvers,
Wakefield, Reading, Stoneham, Winchester and Marblehead.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4270 7075 4267 7070 4270 7062 4267 7059
      4255 7074 4255 7077 4249 7081 4244 7091
      4241 7092 4242 7095 4239 7095 4236 7098
      4247 7117 4281 7086 4281 7082 4283 7083
      4282 7085 4286 7082
TIME...MOT...LOC 1940Z 218DEG 19KT 4247 7102

Belk
Special weather statement, Aug 14, 3:51 PM EDT, 1 hour 31 minutes before
Special Weather Statement
National Weather Service Boston/Norton MA
351 PM EDT TUE AUG 14 2018

MAZ004-005-012-026-142045-
Northwest Middlesex County MA-Southern Worcester MA-
Central Middlesex County MA-Northern Worcester MA-
351 PM EDT TUE AUG 14 2018

...STRONG THUNDERSTORMS DEVELOPING...

At 350 PM EDT, Doppler radar was tracking a strong thunderstorm over
Leicester, or 7 miles southwest of Worcester, moving northeast at 10
mph.

Winds in excess of 30 mph will accompany this storm. Torrential
rainfall with low visibility is also possible with this storm.

Locations impacted include...
Worcester, Leominster, Fitchburg, Marlborough, Shrewsbury, Acton,
Hudson, Grafton, Holden, Auburn, Northborough, Oxford, Clinton,
Millbury, Charlton, Spencer, Leicester, Maynard, Lunenburg and
Lancaster.

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.

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

&&

LAT...LON 4211 7189 4222 7208 4262 7173 4245 7144
TIME...MOT...LOC 1950Z 206DEG 10KT 4222 7193

Belk
Special weather statement, Aug 14, 4:01 PM EDT, 1 hour 21 minutes before
Special Weather Statement
National Weather Service Boston/Norton MA
401 PM EDT TUE AUG 14 2018

MAZ003-004-026-142100-
Northwest Middlesex County MA-Northern Worcester MA-
Eastern Franklin MA-
401 PM EDT TUE AUG 14 2018

...STRONG THUNDERSTORMS DEVELOPING...

At 400 PM EDT, Doppler radar was tracking a strong thunderstorm near
Petersham, or 11 miles southeast of Orange, moving north at 15 mph.

Winds in excess of 30 mph will accompany this storm. Torrential
rainfall with low visibility is also possible with this storm.

Locations impacted include...
Gardner, Athol, Winchendon, Templeton, Westminster, Ashburnham,
Barre, Hubbardston, Ashby, Hardwick, Oakham, Phillipston, Royalston,
Petersham and New Salem.

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.

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

&&

LAT...LON 4271 7183 4237 7206 4243 7230 4272 7219
TIME...MOT...LOC 2000Z 201DEG 14KT 4247 7215

Belk
Special weather statement, Aug 14, 5:22 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 10:26 PM EDTSpecial Weather StatementBOXSuffolk79 min
Aug 14, 3:45 AM EDTSmall Craft AdvisoryBOX48 hr
Aug 14, 3:47 AM EDTDense Fog AdvisoryBOXBarnstable, Bristol, Dukes, Nantucket, Norfolk, Plymouth and 1 more5 hr
Aug 14, 10:51 AM EDTSpecial Weather StatementBOXHampden39 min
Aug 14, 11:26 AM EDTSpecial Weather StatementBOXHampden49 min
Aug 14, 11:59 AM EDTSpecial Weather StatementBOXFranklin46 min
Aug 14, 12:14 PM EDTSpecial Weather StatementBOXFranklin46 min
Aug 14, 12:24 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampshire, Worcester30 min
Aug 14, 12:32 PM EDTSpecial Weather StatementBOXWorcester43 min
Aug 14, 1:49 PM EDTSpecial Weather StatementBOXMiddlesex41 min
Aug 14, 2:44 PM EDTSpecial Weather StatementBOXHampshire46 min
Aug 14, 3:28 PM EDTSpecial Weather StatementBOXFranklin47 min
Aug 14, 3:41 PM EDTSpecial Weather StatementBOXEssex64 min
Aug 14, 3:44 PM EDTAreal Flood AdvisoryBOXEssex, Middlesex, Suffolk61 min
Aug 14, 3:51 PM EDTSpecial Weather StatementBOXWorcester54 min
Aug 14, 4:01 PM EDTSpecial Weather StatementBOXWorcester59 min
Aug 14, 6:11 PM EDTSpecial Weather StatementBOXBerkshire49 min
Aug 14, 7:00 PM EDTSpecial Weather StatementBOXFranklin30 min
Aug 14, 7:29 PM EDTSpecial Weather StatementBOXFranklin31 min
Aug 14, 7:47 PM EDTSpecial Weather StatementBOXEssex28 min
Aug 14, 11:10 AM EDTAreal Flood AdvisoryBOXCapitol Planning Region88 min
Aug 14, 6:54 PM EDTSpecial Weather StatementBOX36 min
Aug 14, 7:24 PM EDTSpecial Weather StatementBOX36 min

Nearby

Special Weather Statements in Massachusetts, 2018Every special weather statement in 2018

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.