Alert archive / Massachusetts / Special Weather Statements in 2015

Special Weather Statement, NWS Boston/Norton, MA

July 30, 2015Hampshire County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Jul 30, 2015, 3:25 PM EDT for Hampshire County, Massachusetts. It was in force for 50 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: Jul 30, 2015, 3:25 PM EDT (19:25 UTC)
Expired: Jul 30, 2015, 4:15 PM EDT
In force: 50 min
Issued by: NWS Boston/Norton, MA

County Hampshire County, MA

The radar

The Albany radar (KENX), 126 km from the middle of the area, began a volume at 19:26 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 12:00Z, 7.4 hours before the alert went out and 174 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: 648 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 672 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 61 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 Jul 30, 2:05 PM EDT, 1 hour 20 minutes earlier.

Area forecast discussion, Jul 30, 2:05 PM EDT, 1 hour 20 minutes before

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Hazardous weather outlook, Jul 30, 3:52 AM EDT, 11 hours 33 minutes before

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In the hours before

Special weather statement, Jul 30, 10:21 AM EDT, 5 hours 4 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
1021 AM EDT THU JUL 30 2015

CTZ002>004-MAZ002>019-026-RIZ001>004-301830-
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-NORTHERN MIDDLESEX MA-
NORTHWEST PROVIDENCE RI-SOUTHEAST PROVIDENCE RI-WESTERN KENT RI-
EASTERN KENT RI-
INCLUDING THE CITIES OF...HARTFORD...WINDSOR LOCKS...UNION...
VERNON...PUTNAM...WILLIMANTIC...CHARLEMONT...GREENFIELD...
ORANGE...BARRE...FITCHBURG...FRAMINGHAM...LOWELL...LAWRENCE...
GLOUCESTER...CHESTERFIELD...BLANDFORD...AMHERST...NORTHAMPTON...
SPRINGFIELD...MILFORD...WORCESTER...FOXBORO...NORWOOD...
CAMBRIDGE...BOSTON...QUINCY...TAUNTON...BROCKTON...PLYMOUTH...
AYER...FOSTER...SMITHFIELD...PROVIDENCE...WEST GREENWICH...
WARWICK
1021 AM EDT THU JUL 30 2015

...A FEW SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON AND
EVENING...

A LINE OF SHOWERS AND THUNDERSTORMS IS EXPECTED TO REACH WESTERN
NEW ENGLAND EARLY THIS AFTERNOON. A FEW STORMS MAY PRODUCE WIND
GUSTS AS HIGH AS 60 MPH...TORRENTIAL RAINFALL AND FREQUENT
LIGHTNING...ESPECIALLY FROM THE BERKSHIRES TO THE WORCESTER HILLS
AND IN NORTHERN CONNECTICUT BETWEEN 2 PM AND 4 PM.

THE STORMS ARE EXPECTED TO WEAKEN SOMEWHAT AS THEY REACH RHODE
ISLAND AND EASTERN MASSACHUSETTS BETWEEN 4 AND 6 PM...BUT COULD
STILL PRODUCE FREQUENT LIGHTNING AND HEAVY RAINFALL.

IF YOU HAVE OUTDOOR PLANS...KEEP AN EYE TO THE SKY AND HAVE A SAFE
PLACE TO GO TO IF THUNDERSTORMS APPROACH SUCH AS A VEHICLE OR
BUILDING. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

JWD

Special weather statement, Jul 30, 3:25 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
325 PM EDT THU JUL 30 2015

MAZ003-008-010-302015-
EASTERN FRANKLIN-WESTERN HAMPSHIRE-EASTERN HAMPSHIRE-
325 PM EDT THU JUL 30 2015

...STRONG THUNDERSTORM IN NORTHERN HAMPSHIRE COUNTY...

AT 323 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM JUST NORTH OF NORTHAMPTON...MOVING NORTHEAST
AT 30 MPH.  FREQUENT CLOUD TO GROUND LIGHTNING...HEAVY DOWNPOURS...
AND WIND GUSTS TO 30 MPH ACCOMPANIED THIS STORM.

LOCATIONS IMPACTED INCLUDE...
AMHERST...NORTHAMPTON...DEERFIELD...MONTAGUE...HADLEY...SUNDERLAND...
HATFIELD...WILLIAMSBURG...LEVERETT...SHUTESBURY...WESTHAMPTON...
WHATELY...PELHAM...NEW SALEM AND WENDELL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING WAS OCCURRING WITH THIS STORM.
FOR YOUR SAFETY...GO INSIDE OR IN A VEHICLE. STAY AWAY FROM OPEN
AREAS SUCH AS BALL FIELDS...GOLF COURSES AND PARKS. WAIT AT LEAST 30
MINUTES AFTER THE STORM ENDS TO RESUME OUTDOOR ACTIVITIES.

&&

LAT...LON 4235 7279 4259 7241 4245 7228 4245 7229
      4228 7275
TIME...MOT...LOC 1923Z 239DEG 27KT 4235 7269

FIELD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 30, 4:04 PM EDT	Special Weather Statement	BOX	Hampden	41 min
Jul 30, 5:08 PM EDT	Areal Flood Warning	BOX	Worcester	112 min
Jul 30, 5:36 PM EDT	Special Weather Statement	BOX	Middlesex	39 min
Jul 30, 4:26 PM EDT	Special Weather Statement	BOX		49 min
Jul 30, 4:28 PM EDT	Areal Flood Warning	BOX	Capitol Planning Region	2 hr
Jul 30, 4:53 PM EDT	Areal Flood Warning	BOX	Capitol Planning Region	112 min

Nearby

Special Weather Statements in Massachusetts, 2015 Every special weather statement in 2015

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.