Alert archive / Massachusetts / Special Weather Statements in 2011

Special Weather Statement, NWS Boston/Norton, MA

August 21, 2011Franklin County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Aug 21, 2011, 7:11 PM EDT for Franklin County, Massachusetts. It was in force for 64 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 21, 2011, 7:11 PM EDT (23:11 UTC)
Expired: Aug 21, 2011, 8:15 PM EDT
In force: 64 min
Issued by: NWS Boston/Norton, MA

County Franklin County, MA

The radar

The Albany radar (KENX), 91 km from the middle of the area, began a volume at 23:12 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, 11.2 hours before the alert went out and 74 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 453 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 1024 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 106 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

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 21, 4:45 PM EDT, 2 hours 26 minutes earlier.

Area forecast discussion, Aug 21, 4:45 PM EDT, 2 hours 26 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Aug 21, 4:03 AM EDT, 15 hours 8 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAUNTON MA
403 AM EDT SUN AUG 21 2011

CTZ002>004-MAZ002>024-026-NHZ011-012-015-RIZ001>008-220815-
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 BRISTOL MA-
WESTERN PLYMOUTH MA-EASTERN PLYMOUTH MA-SOUTHERN BRISTOL MA-
SOUTHERN PLYMOUTH MA-BARNSTABLE MA-DUKES MA-NANTUCKET MA-
NORTHERN MIDDLESEX MA-CHESHIRE NH-EASTERN HILLSBOROUGH NH-
WESTERN AND CENTRAL HILLSBOROUGH NH-NORTHWEST PROVIDENCE RI-
SOUTHEAST PROVIDENCE RI-WESTERN KENT RI-EASTERN KENT RI-BRISTOL RI-
WASHINGTON RI-NEWPORT RI-BLOCK ISLAND RI-
403 AM EDT SUN AUG 21 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN
CONNECTICUT...CENTRAL MASSACHUSETTS...EASTERN
MASSACHUSETTS...NORTHEASTERN MASSACHUSETTS...SOUTHEASTERN
MASSACHUSETTS...WESTERN MASSACHUSETTS...SOUTHERN NEW
HAMPSHIRE...NORTHERN RHODE ISLAND AND SOUTHERN RHODE ISLAND.

.DAY ONE...TODAY AND TONIGHT.

A FEW STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON
AND THIS EVENING. THESE THUNDERSTORMS MAY PRODUCE STRONG WIND GUSTS AND
HAIL. THEY MAY ALSO PRODUCE BRIEF HEAVY DOWNPOURS THAT COULD CAUSE
LOCAL URBAN AND POOR DRAINAGE FLOODING. THE GREATEST RISK OF
STRONGER THUNDERSTORMS SHOULD BE ACROSS SOUTHERN NEW HAMPSHIRE...
CENTRAL AND WESTERN MASSACHUSETTS AND NORTHERN CONNECTICUT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED TODAY.

ANZ230>237-250-251-254>256-220815-
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-
403 AM EDT SUN AUG 21 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MASSACHUSETTS COASTAL WATERS
AND RHODE ISLAND COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORMS ARE POSSIBLE LATER THIS AFTERNOON AND TONIGHT.
THESE THUNDERSTORMS MAY PRODUCE STRONG WIND GUSTS AND LOCALLY
HEAVY DOWNPOURS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED.

In the hours before

Local storm report, Aug 21, 3:13 PM EDT, 3 hours 58 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
313 PM EDT SUN AUG 21 2011

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

0228 PM     TSTM WND DMG     WESTMORELAND            42.97N  72.45W
08/21/2011                   CHESHIRE           NH   AMATEUR RADIO

            TREES AND WIRES DOWN ON SOUTH VILLAGE ROAD

0229 PM     TSTM WND DMG     SURRY                   43.05N  72.33W
08/21/2011                   CHESHIRE           NH   AMATEUR RADIO

            TREE DOWN ACROSS ROAD ON ROUTE 12A NEAR FIRE STATION

0237 PM     TSTM WND DMG     ALSTEAD                 43.15N  72.37W
08/21/2011                   CHESHIRE           NH   AMATEUR RADIO

            TREES DOWN ON WIRES ON ROUTE 12A. TREES AND WIRES DOWN
            BLOCKING HIGH STREET.

&&

KAB

Special weather statement, Aug 21, 3:13 PM EDT, 3 hours 58 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
313 PM EDT SUN AUG 21 2011

MAZ003-004-NHZ011-015-212000-
CHESHIRE NH-EASTERN FRANKLIN MA-NORTHERN WORCESTER MA-WESTERN AND
CENTRAL HILLSBOROUGH NH-
313 PM EDT SUN AUG 21 2011

...STRONG THUNDERSTORM IN NORTH CENTRAL MASSACHUSETTS...

AT 310 PM EDT...A STRONG THUNDERSTORM CAPABLE OF PRODUCING WIND
GUSTS TO 40 MPH AND PENNY SIZED HAIL WAS NEAR ROYALSTON...AND
WAS MOVING NORTHEAST AT 40 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...WINCHENDON...FITZWILLIAM...
  RINDGE...JAFFREY...SHARON...PETERBOROUGH...TEMPLE AND GREENFIELD.

FOR YOUR SAFETY...GET INSIDE WHEN THESE STORMS APPROACH. THESE STORMS
MAY STRENGTHEN AND COULD PRODUCE DAMAGING WINDS OR LARGE HAIL. STAY
TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR POSSIBLE
WARNINGS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SUNDAY
EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW
HAMPSHIRE.

&&

LAT...LON 4303 7190 4286 7173 4258 7216 4267 7228

JWD

Special weather statement, Aug 21, 3:15 PM EDT, 3 hours 56 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
315 PM EDT SUN AUG 21 2011

CTZ002-212000-
HARTFORD CT-
315 PM EDT SUN AUG 21 2011

AT 313 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING SMALL HAIL...AND WIND GUSTS
UP TO 40 MPH...10 MILES WEST OF BRISTOL...OR ABOUT 9 MILES NORTHWEST
OF WOLCOTT...MOVING EAST AT 20 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...BRISTOL...BURLINGTON...
  SOUTHINGTON...PLAINVILLE...CANTON...NEW BRITAIN...FARMINGTON AND
  AVON.

FOR YOUR SAFETY...GET INSIDE WHEN THESE STORMS APPROACH. THESE STORMS
MAY STRENGTHEN AND COULD PRODUCE DAMAGING WINDS OR LARGE HAIL. STAY
TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR POSSIBLE
WARNINGS.

&&

LAT...LON 4181 7295 4186 7296 4191 7286 4163 7277
      4157 7277 4155 7282 4156 7284 4155 7284
      4154 7286 4156 7288 4156 7295 4164 7294
      4164 7299 4180 7302

SIPPRELL

Local storm report, Aug 21, 3:46 PM EDT, 3 hours 25 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
346 PM EDT SUN AUG 21 2011

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

0228 PM     TSTM WND DMG     WESTMORELAND            42.97N  72.45W
08/21/2011                   CHESHIRE           NH   AMATEUR RADIO

            TREES AND WIRES DOWN ON SOUTH VILLAGE ROAD

0229 PM     TSTM WND DMG     SURRY                   43.05N  72.33W
08/21/2011                   CHESHIRE           NH   AMATEUR RADIO

            TREE DOWN ACROSS ROAD ON ROUTE 12A NEAR FIRE STATION

0235 PM     TSTM WND DMG     WALPOLE                 43.08N  72.43W
08/21/2011                   CHESHIRE           NH   AMATEUR RADIO

            TREES AND WIRES DOWN ON KINGSBURY ROAD. LARGE LIMBS
            DOWN ON COUNTY ROAD.

0237 PM     TSTM WND DMG     ALSTEAD                 43.15N  72.37W
08/21/2011                   CHESHIRE           NH   AMATEUR RADIO

            TREES DOWN ON WIRES ON ROUTE 12A. TREES AND WIRES DOWN
            BLOCKING HIGH STREET.

0246 PM     TSTM WND DMG     KEENE                   42.95N  72.30W
08/21/2011                   CHESHIRE           NH   CO-OP OBSERVER

            NUMEROUS REPORTS THROUGHOUT DOWNTOWN KEENE OF MULTIPLE
            LARGE TREE LIMBS DOWN OBSTRUCTING SIDEWALKS AND ROADS.
            ONE TREE STRUCK BY LIGHTNING AND ANOTHER TREE DOWN
            ACROSS A PORTION OF A HOUSE.

&&

KAB

Local storm report, Aug 21, 4:51 PM EDT, 2 hours 20 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
451 PM EDT SUN AUG 21 2011

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

0221 PM     TSTM WND DMG     KEENE                   42.95N  72.30W
08/21/2011                   CHESHIRE           NH   LAW ENFORCEMENT

            LARGE LIMBS DOWN BLOCKING WASHINGTON AND MECHANIC
            STREETS IN DOWNTOWN KEENE

0228 PM     TSTM WND DMG     WESTMORELAND            42.97N  72.45W
08/21/2011                   CHESHIRE           NH   AMATEUR RADIO

            TREES AND WIRES DOWN ON SOUTH VILLAGE ROAD

0229 PM     TSTM WND DMG     SURRY                   43.05N  72.33W
08/21/2011                   CHESHIRE           NH   AMATEUR RADIO

            TREE DOWN ACROSS ROAD ON ROUTE 12A NEAR FIRE STATION

0235 PM     TSTM WND DMG     WALPOLE                 43.08N  72.43W
08/21/2011                   CHESHIRE           NH   AMATEUR RADIO

            TREES AND WIRES DOWN ON KINGSBURY ROAD. LARGE LIMBS
            DOWN ON COUNTY ROAD.

0237 PM     TSTM WND DMG     ALSTEAD                 43.15N  72.37W
08/21/2011                   CHESHIRE           NH   AMATEUR RADIO

            TREES DOWN ON WIRES ON ROUTE 12A. TREES AND WIRES DOWN
            BLOCKING HIGH STREET.

0246 PM     TSTM WND DMG     KEENE                   42.95N  72.30W
08/21/2011                   CHESHIRE           NH   CO-OP OBSERVER

            NUMEROUS REPORTS THROUGHOUT DOWNTOWN KEENE OF MULTIPLE
            LARGE TREE LIMBS DOWN OBSTRUCTING SIDEWALKS AND ROADS.
            ONE TREE STRUCK BY LIGHTNING AND ANOTHER TREE DOWN
            ACROSS A PORTION OF A HOUSE.

0352 PM     TSTM WND DMG     HARTFORD                41.77N  72.68W
08/21/2011                   HARTFORD           CT   AMATEUR RADIO

            LARGE TREE DOWN ON HOUSE ON PLINY STREET

&&

KAB

Special weather statement, Aug 21, 7:11 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
711 PM EDT SUN AUG 21 2011

MAZ002-003-008-220015-
EASTERN FRANKLIN MA-WESTERN FRANKLIN MA-WESTERN HAMPSHIRE MA-
711 PM EDT SUN AUG 21 2011

AT 707 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH AND
FREQUENT LIGHTNING 9 MILES WEST OF EAST WINDSOR...OR ABOUT 16 MILES
SOUTH OF NORTH ADAMS...MOVING NORTHEAST AT 20 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...EAST WINDSOR...WORTHINGTON...
  CUMMINGTON...CHESTERFIELD...PLAINFIELD...HAWLEY...GOSHEN...
  MONROE...CHARLEMONT...ROWE...ASHFIELD...HEATH...BUCKLAND...CONWAY
  AND SHELBURNE.

FOR YOUR SAFETY...GET INSIDE WHEN THESE STORMS APPROACH. THESE STORMS
MAY STRENGTHEN AND COULD PRODUCE DAMAGING WINDS OR LARGE HAIL. STAY
TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR POSSIBLE
WARNINGS.

HEAVY RAIN MAY CAUSE MINOR STREET FLOODING AND PONDING OF WATER IN
LOW LYING AREAS SUCH AS UNDERPASSES. DO NOT DRIVE THROUGH FLOODED
ROADS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SUNDAY
EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW
HAMPSHIRE.

&&

LAT...LON 4239 7302 4263 7296 4266 7296 4266 7299
      4268 7299 4270 7296 4270 7302 4274 7303
      4274 7276 4246 7258 4239 7284 4236 7307
      4239 7307

SIPPRELL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 12:53 PM EDT	Special Marine Warning	BOX		52 min
Aug 21, 1:11 PM EDT	Special Weather Statement	BOX	Franklin	49 min
Aug 21, 1:39 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	66 min
Aug 21, 1:44 PM EDT	Special Marine Warning	BOX		61 min
Aug 21, 1:58 PM EDT	Special Weather Statement	BOX	Franklin	47 min
Aug 21, 2:54 PM EDT	Small Craft Advisory	BOX		8 hr
Aug 21, 7:53 PM EDT	Severe Thunderstorm Warning	BOX	Franklin	23 min
Aug 21, 3:15 PM EDT	Special Weather Statement	BOX		45 min
Aug 21, 3:40 PM EDT	Severe Thunderstorm Warning	BOX	Capitol Planning Region	35 min
Aug 21, 2:11 PM EDT	Severe Thunderstorm Warning	BOX	Cheshire	49 min
Aug 21, 2:28 PM EDT	Severe Thunderstorm Warning	BOX	Cheshire, Hillsborough	47 min
Aug 21, 2:47 PM EDT	Special Weather Statement	BOX	Hillsborough	58 min
Aug 21, 3:13 PM EDT	Special Weather Statement	BOX	Cheshire	47 min

Nearby

Special Weather Statements in Massachusetts, 2011 Every special weather statement in 2011

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.