Alert archive / Massachusetts / Special Weather Statements in 2015

Special Weather Statement, NWS Boston/Norton, MA

July 7, 2015Franklin County, Hampshire County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Jul 7, 2015, 4:20 PM EDT for Franklin County, Hampshire County, Massachusetts. It was in force for 40 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 7, 2015, 4:20 PM EDT (20:20 UTC)
Expired: Jul 7, 2015, 5:00 PM EDT
In force: 40 min
Issued by: NWS Boston/Norton, MA

Counties Franklin County, MA, Hampshire County, MA

The radar

The Albany radar (KENX), 113 km from the middle of the area, began a volume at 20:24 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, 8.3 hours before the alert went out and 98 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 864 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 83 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 7, 10:33 AM EDT, 5 hours 47 minutes earlier.

Area forecast discussion, Jul 7, 10:33 AM EDT, 5 hours 47 minutes before

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Hazardous weather outlook, Jul 7, 4:26 AM EDT, 11 hours 54 minutes before

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In the hours before

Special weather statement, Jul 7, 4:20 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
420 PM EDT TUE JUL 7 2015

MAZ002-003-008>010-072100-
WESTERN FRANKLIN-EASTERN FRANKLIN-WESTERN HAMPDEN-WESTERN
HAMPSHIRE-EASTERN HAMPSHIRE-
420 PM EDT TUE JUL 7 2015

...STRONG THUNDERSTORM IN CENTRAL HAMPSHIRE...NORTHWESTERN HAMPDEN
AND CENTRAL FRANKLIN COUNTIES...

AT 419 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM OVER HUNTINGTON...OR 9 MILES WEST OF
NORTHAMPTON...MOVING NORTHEAST AT 35 MPH.

WIND GUSTS UP TO 40 MPH CAN BE EXPECTED WITH THIS STORM ALONG WITH
VERY HEAVY RAINFALL. MINOR URBAN AND POOR DRAINAGE FLOODING CAN BE
EXPECTED. DO NOT DRIVE THROUGH FLOODED ROADS.

LOCATIONS IMPACTED INCLUDE...
AMHERST...NORTHAMPTON...GREENFIELD...DEERFIELD...MONTAGUE...HADLEY...
SUNDERLAND...HATFIELD...NORTHFIELD...WILLIAMSBURG...HUNTINGTON...
BERNARDSTON...CONWAY...LEVERETT...ERVING...SHUTESBURY...
WESTHAMPTON...GILL...WHATELY AND CHESTER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL WAS OCCURRING WITH THIS STORM. MINOR URBAN AND
POOR DRAINAGE FLOODING CAN BE EXPECTED. DO NOT DRIVE THROUGH FLOODED
ROADS.

&&

LAT...LON 4226 7291 4230 7294 4267 7250 4245 7230
TIME...MOT...LOC 2019Z 234DEG 30KT 4232 7285

NOCERA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 4:57 PM EDT	Special Weather Statement	BOX	Franklin	48 min
Jul 7, 5:00 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Worcester	45 min
Jul 7, 5:20 PM EDT	Areal Flood Advisory	BOX	Franklin, Hampshire, Worcester	55 min
Jul 7, 5:48 PM EDT	Areal Flood Advisory	BOX	Franklin, Hampden, Hampshire, Worcester	117 min
Jul 7, 6:21 PM EDT	Areal Flood Warning	BOX	Franklin, Hampshire	114 min
Jul 7, 7:48 PM EDT	Flash Flood Watch	BOX	Barnstable, Bristol, Norfolk, Plymouth, Suffolk	24 hr
Jul 7, 1:35 PM EDT	Areal Flood Advisory	BOX	Capitol Planning Region	55 min
Jul 7, 7:26 PM EDT	Special Weather Statement	BOX		34 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.