Alert archive / Massachusetts / Special Weather Statements in 2012

Special Weather Statement, NWS Boston/Norton, MA

August 9, 2012Hampshire County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Aug 9, 2012, 1:39 PM EDT for Hampshire County, Massachusetts. It was in force for 51 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 9, 2012, 1:39 PM EDT (17:39 UTC)
Expired: Aug 9, 2012, 2:30 PM EDT
In force: 51 min
Issued by: NWS Boston/Norton, MA

County Hampshire County, MA

The radar

The Albany radar (KENX), 109 km from the middle of the area, began a volume at 17:40 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, 5.7 hours before the alert went out and 93 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: 780 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 965 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

715 
WWUS81 KBOX 091739
SPSBOX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
139 PM EDT THU AUG 9 2012

MAZ002-003-008-091830-
EASTERN FRANKLIN MA-WESTERN FRANKLIN MA-WESTERN HAMPSHIRE MA-
139 PM EDT THU AUG 9 2012

AT 136 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A 
THUNDERSTORM NEAR GOSHEN...OR ABOUT 10 MILES NORTHWEST OF 
NORTHAMPTON...MOVING EAST AT 5 MPH.

* SOME LOCATIONS AFFECTED INCLUDE...WILLIAMSBURG.

* THIS STORM MAY BE PRODUCING A MIX OF HEAVY RAIN AND SMALL HAIL.

FOR YOUR SAFETY...GET INSIDE WHEN THIS STORM APPROACHES. WINDS MAY BE
STRONG ENOUGH TO BRING DOWN SMALL BRANCHES. HEAVY RAIN MAY CAUSE 
MINOR STREET FLOODING AND PONDING OF WATER IN POOR DRAINAGE AREAS. 
 
DO NOT DRIVE THROUGH FLOODED ROADS.

&&

LAT...LON 4249 7267 4238 7269 4241 7285 4250 7283

$$

WTB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 1:01 PM EDT	Special Weather Statement	BOX	Franklin	59 min
Aug 9, 1:16 PM EDT	Areal Flood Advisory	BOX	Franklin	108 min
Aug 9, 1:48 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampshire	32 min
Aug 9, 1:53 PM EDT	Areal Flood Advisory	BOX	Franklin, Hampshire	2 hr
Aug 9, 2:03 PM EDT	Special Weather Statement	BOX	Hampshire	57 min
Aug 9, 2:18 PM EDT	Areal Flood Advisory	BOX	Hampden, Hampshire	53 min
Aug 9, 2:44 PM EDT	Special Weather Statement	BOX	Hampden	46 min
Aug 9, 2:53 PM EDT	Areal Flood Advisory	BOX	Hampden, Hampshire	45 min
Aug 9, 5:11 PM EDT	Special Weather Statement	BOX	Worcester	64 min
Aug 9, 5:44 PM EDT	Special Weather Statement	BOX	Worcester	61 min
Aug 9, 3:45 PM EDT	Special Weather Statement	BOX		60 min
Aug 9, 1:06 PM EDT	Special Weather Statement	BOX	Hillsborough	54 min
Aug 9, 2:11 PM EDT	Special Weather Statement	BOX	Hillsborough	64 min

Nearby

Special Weather Statements in Massachusetts, 2012 Every special weather statement in 2012

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.