Alert archive / Massachusetts / Special Weather Statements in 2018

Special Weather Statement, NWS Boston/Norton, MA

June 28, 2018Hampden County, Massachusetts

NWS Boston/Norton, MA issued this special weather statement at Jun 28, 2018, 3:21 PM EDT for Hampden County, Massachusetts. It was in force for 39 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: Jun 28, 2018, 3:21 PM EDT (19:21 UTC)
Expired: Jun 28, 2018, 4:00 PM EDT
In force: 39 min
Issued by: NWS Boston/Norton, MA

County Hampden County, MA

The radar

The Boston radar (KBOX), 107 km from the middle of the area, began a volume at 19:21 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

Albany, NY (KALY), launched 12:00Z, 7.4 hours before the alert went out and 131 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: 69 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 524 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 177 m²/s²
0-3 km storm-relative helicity: 104 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

868 
WWUS81 KBOX 281921
SPSBOX

Special Weather Statement
National Weather Service Boston/Norton MA
321 PM EDT THU JUN 28 2018
 
MAZ004-010-011-282000-
Eastern Hampden MA-Northern Worcester MA-Eastern Hampshire MA-
321 PM EDT THU JUN 28 2018

...STRONG THUNDERSTORMS IN CENTRAL HAMPDEN COUNTY...

At 320 PM EDT, Doppler radar was tracking a strong thunderstorm near
Wilbraham moving east at 20 mph.

Winds in excess of 30 mph will accompany this storm.

Locations impacted include...
Springfield, Chicopee, Ludlow, Belchertown, Wilbraham, Palmer, Ware,
Monson, Hampden, Warren, Brimfield and Hardwick.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Get indoors when this storm approaches. Winds may be strong enough to
produce minor damage, such as a few downed branches.

&&

LAT...LON 4209 7253 4217 7255 4232 7227 4211 7213
TIME...MOT...LOC 1920Z 251DEG 19KT 4214 7249 

$$
FIELD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 3:53 AM EDT	Flash Flood Watch	BOX	Franklin, Hampden, Hampshire, Middlesex, Worcester	7 hr
Jun 28, 5:16 AM EDT	Special Weather Statement	BOX	Hampden, Hampshire	89 min
Jun 28, 10:03 AM EDT	Areal Flood Advisory	BOX	Bristol, Essex, Middlesex, Norfolk, Plymouth, Suffolk and 1 more	117 min
Jun 28, 2:41 PM EDT	Areal Flood Advisory	BOX	Franklin, Hampden, Hampshire	3 hr
Jun 28, 4:47 PM EDT	Special Weather Statement	BOX	Worcester	58 min
Jun 28, 4:59 PM EDT	Areal Flood Advisory	BOX	Franklin, Worcester	61 min
Jun 28, 5:58 PM EDT	Areal Flood Advisory	BOX	Franklin, Worcester	62 min
Jun 28, 1:38 PM EDT	Areal Flood Advisory	BOX	Kent, Providence	2 hr
Jun 28, 6:26 PM EDT	Special Weather Statement	BOX		49 min
Jun 28, 7:30 PM EDT	Areal Flood Advisory	BOX	Northeastern Connecticut Planning Region	2 hr

Nearby

Special Weather Statements in Massachusetts, 2018 Every special weather statement in 2018

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.