Alert archive / Connecticut / Special Weather Statements in 2011

Special Weather Statement, NWS Boston/Norton, MA

August 19, 2011

NWS Boston/Norton, MA issued this special weather statement at Aug 19, 2011, 8:18 PM EDT. It was in force for 42 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 19, 2011, 8:18 PM EDT (00:18 UTC)
Expired: Aug 19, 2011, 9:00 PM EDT
In force: 42 min
Issued by: NWS Boston/Norton, MA

The radar

The Brookhaven radar (KOKX), 117 km from the middle of the area, began a volume at 00:21 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 00:00Z, 0.3 hours before the alert went out and 117 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: 962 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 961 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 50 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

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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 19, 7:06 PM EDT, 1 hour 12 minutes earlier.

Area forecast discussion, Aug 19, 7:06 PM EDT, 1 hour 12 minutes before

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Hazardous weather outlook, Aug 19, 4:18 PM EDT, 4 hours before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TAUNTON MA
418 PM EDT FRI AUG 19 2011

CTZ002>004-MAZ002>024-026-NHZ011-012-015-RIZ001>008-202030-
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-
418 PM EDT FRI AUG 19 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...TONIGHT.

ISOLATED SEVERE THUNDERSTORMS WILL CONTINUE THROUGH THIS EVENING
MAINLY ACROSS CENTRAL AND NORTHERN MASSACHUSETTS INTO SOUTHERN NEW
HAMPSHIRE. THE MAIN THREATS WILL BE LARGE HAIL AND STRONG TO
DAMAGING STRAIGHT WIND GUSTS.

IN ADDITION...ANY STORM THAT DEVELOPS WILL MOVE SLOW AND MAY
RESULT IN ISOLATED AND LOCALIZED FLOODING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

A FEW STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE SUNDAY
AFTERNOON AND EVENING.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES THROUGH
THIS EVENING.

ANZ230>237-250-251-254>256-202030-
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-
418 PM EDT FRI AUG 19 2011

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

.DAY ONE...TONIGHT.

ISOLATED STRONG TO SEVERE THUNDERSTORMS WITH LARGE HAIL AND STRONG
WIND GUSTS ARE POSSIBLE NEAR SHORE THROUGH THIS EVENING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

A FEW STRONG THUNDERSTORMS ARE POSSIBLE SOMETIME SUNDAY AFTERNOON
AND EVENING.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Special weather statement, Aug 19, 5:54 PM EDT, 2 hours 24 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
554 PM EDT FRI AUG 19 2011

NHZ015-192300-
WESTERN AND CENTRAL HILLSBOROUGH NH-
554 PM EDT FRI AUG 19 2011

...STRONG THUNDERSTORM NEAR GREENFIELD...

AT 554 PM EDT...A STRONG THUNDERSTORM CAPABLE OF PRODUCING WIND
GUSTS TO 40 MPH AND PENNY SIZED HAIL WAS NEAR GREENFIELD...OR ABOUT
14 MILES NORTHEAST OF JAFFREY...MOVING NORTHEAST AT 40 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...DEERING AND WEARE.

FOR YOUR SAFETY...GET INSIDE WHEN THIS STORM APPROACHES. WINDS MAY BE
STRONG ENOUGH TO BRING DOWN SMALL BRANCHES. MINOR STREET FLOODING AND
PONDING OF WATER IN POOR DRAINAGE AREAS IS ALSO POSSIBLE.

&&

LAT...LON 4315 7166 4306 7164 4306 7162 4291 7188
      4295 7196 4313 7182 4315 7169 4315 7167

JWD

Special weather statement, Aug 19, 6:31 PM EDT, 1 hour 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
631 PM EDT FRI AUG 19 2011

NHZ011-015-192315-
CHESHIRE NH-WESTERN AND CENTRAL HILLSBOROUGH NH-
631 PM EDT FRI AUG 19 2011

AT 629 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING SMALL HAIL...AND GUSTY
WINDS UP TO 40 MPH...2 MILES NORTHWEST OF ROXBURY...OR ABOUT 4 MILES
EAST OF KEENE...MOVING NORTHEAST AT 15 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...NELSON...SULLIVAN...GILSUM...
  MARLOW AND STODDARD.

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.

&&

LAT...LON 4316 7188 4297 7207 4290 7222 4293 7232
      4318 7221 4318 7215 4314 7217 4313 7205
      4315 7203 4319 7203 4321 7194 4321 7190

SIPPRELL

Special weather statement, Aug 19, 6:43 PM EDT, 1 hour 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
643 PM EDT FRI AUG 19 2011

MAZ008>011-192345-
EASTERN HAMPDEN MA-EASTERN HAMPSHIRE MA-WESTERN HAMPDEN MA-WESTERN
HAMPSHIRE MA-
643 PM EDT FRI AUG 19 2011

AT 642 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING PENNY SIZED HAIL...WITH
WIND GUSTS UP TO 40 MPH...ALONG A LINE EXTENDING FROM 5 MILES WEST
OF MIDDLEFIELD TO 10 MILES SOUTHWEST OF CHESTER TO 8 MILES WEST OF
TOLLAND...OR ALONG A LINE EXTENDING FROM 23 MILES WEST OF
NORTHAMPTON TO 18 MILES NORTHWEST OF HARTLAND TO 13 MILES NORTHWEST
OF HARTLAND...MOVING EAST AT 20 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...MIDDLEFIELD...TOLLAND...
  CHESTER...WORTHINGTON...BLANDFORD...CHESTERFIELD...HUNTINGTON...
  RUSSELL...GOSHEN...MONTGOMERY...WESTHAMPTON AND WILLIAMSBURG.

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.

&&

LAT...LON 4214 7308 4216 7303 4230 7301 4233 7307
      4239 7307 4239 7302 4241 7301 4246 7276
      4244 7275 4245 7271 4245 7270 4241 7270
      4241 7269 4213 7283 4204 7304 4210 7308

SIPPRELL

Special weather statement, Aug 19, 7:25 PM EDT, 53 minutes before

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Local storm report, Aug 19, 7:54 PM EDT, 24 minutes before

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Special weather statement, Aug 19, 8:18 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.

Issued	Product	Office	Counties	Lasted
Aug 20, 12:06 PM EDT	Severe Thunderstorm Warning	BOX	Barnstable, Plymouth	39 min
Aug 20, 12:17 PM EDT	Special Marine Warning	BOX		58 min
Aug 20, 12:55 PM EDT	Special Weather Statement	BOX	Plymouth	65 min
Aug 20, 2:39 PM EDT	Special Weather Statement	BOX	Norfolk	66 min
Aug 20, 2:48 PM EDT	Special Weather Statement	BOX	Essex	57 min
Aug 20, 3:59 PM EDT	Special Weather Statement	BOX	Essex	61 min
Aug 20, 12:02 PM EDT	Special Weather Statement	BOX	Providence	58 min
Aug 20, 1:40 PM EDT	Special Weather Statement	BOX	Bristol	65 min

Nearby

Special Weather Statements in Connecticut, 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.