Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 16, NWS Boston/Norton, MA

March 17, 2016Middlesex County, Norfolk County, Worcester County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Mar 17, 2016, 4:21 PM EDT for Middlesex County, Norfolk County, Worcester County, Massachusetts. It was in force for 23 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: Mar 17, 2016, 4:21 PM EDT (20:21 UTC)
Expired: Mar 17, 2016, 4:44 PM EDT
In force: 23 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

Counties Middlesex County, MA, Norfolk County, MA, Worcester County, MA

The radar

The Boston radar (KBOX), 57 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

Chatham, MA (KCHH), launched 12:00Z, 8.4 hours before the alert went out and 157 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: 615 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: -59 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

699 
WUUS51 KBOX 172021
SVRBOX
MAC017-021-027-172100-
/O.NEW.KBOX.SV.W.0016.160317T2021Z-160317T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
421 PM EDT THU MAR 17 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL NORFOLK COUNTY IN EASTERN MASSACHUSETTS...
  EAST CENTRAL WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  SOUTH CENTRAL MIDDLESEX COUNTY IN NORTHEASTERN MASSACHUSETTS...

* UNTIL 500 PM EDT

* AT 420 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
  WAS LOCATED OVER WORCESTER...AND WAS MOVING EAST AT 35 MPH.
  AMATEUR RADIO OPERATORS REPORTED A TREE DOWN ON MILL STREET IN
  WORCESTER IN ASSOCIATION WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  WORCESTER...FRAMINGHAM...MARLBOROUGH...SHREWSBURY...NATICK...WELLESLEY...
  HUDSON...WESTBOROUGH...GRAFTON...CONCORD...SUDBURY...HOLDEN...ASHLAND...
  AUBURN...HOPKINTON...NORTHBOROUGH...HOLLISTON...MILLBURY...WAYLAND AND
  WESTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND LARGE HAIL. GO
INDOORS AND STAY AWAY FROM WINDOWS.  DRIVERS SHOULD PREPARE FOR LOW
VISIBILITY AND AVOID FLOODED ROADS.

&&

LAT...LON 4219 7192 4235 7194 4243 7133 4222 7129
TIME...MOT...LOC 2020Z 264DEG 32KT 4227 7182 

$$
FIELD

1 follow-up statement

271 
WWUS51 KBOX 172044
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
444 PM EDT THU MAR 17 2016

MAC017-021-027-172054-
/O.CAN.KBOX.SV.W.0016.000000T0000Z-160317T2100Z/
NORFOLK MA-WORCESTER MA-MIDDLESEX MA-
444 PM EDT THU MAR 17 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL NORFOLK...EAST
CENTRAL WORCESTER AND SOUTH CENTRAL MIDDLESEX COUNTIES IS
CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED. HOWEVER GUSTY WINDS ARE
STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4219 7192 4235 7194 4243 7133 4222 7129
TIME...MOT...LOC 2042Z 264DEG 32KT 4229 7153 

$$
FIELD

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 16, 8:53 PM EDT	Small Craft Advisory	BOX		20 hr
Mar 16, 8:53 PM EDT	Small Craft Advisory for Hazardous Seas	BOX		6 hr
Mar 16, 11:02 PM EDT	Special Weather Statement	BOX	Franklin, Hampden, Hampshire	58 min
Mar 16, 11:47 PM EDT	Special Weather Statement	BOX	Franklin, Hampden, Hampshire	43 min
Mar 17, 6:00 AM EDT	Dense Fog Advisory	BOX	Essex, Franklin, Hampden, Hampshire, Middlesex, Worcester	3 hr
Mar 17, 1:51 PM EDT	Special Weather Statement	BOX	Plymouth	24 min
Mar 17, 2:00 PM EDT	Special Weather Statement	BOX	Franklin	45 min
Mar 17, 3:15 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Middlesex, Worcester	45 min
Mar 17, 3:45 PM EDT	Special Weather Statement	BOX	Hampden	45 min
Mar 17, 4:12 PM EDT	Special Weather Statement	BOX	Worcester	48 min
Mar 17, 4:30 PM EDT	Small Craft Advisory for Hazardous Seas	BOX		11 hr
Mar 17, 5:00 PM EDT	Special Marine Warning	BOX		60 min
Mar 17, 5:07 PM EDT	Special Weather Statement	BOX	Plymouth	38 min
Mar 17, 5:23 PM EDT	Special Weather Statement	BOX	Bristol, Plymouth	37 min
Mar 17, 5:33 PM EDT	Special Marine Warning	BOX		57 min
Mar 17, 5:45 PM EDT	Severe Thunderstorm Warning	BOX	Bristol	30 min
Mar 17, 6:09 PM EDT	Special Weather Statement	BOX	Norfolk	51 min
Mar 17, 6:34 PM EDT	Special Weather Statement	BOX	Barnstable	56 min
Mar 17, 6:36 PM EDT	Special Marine Warning	BOX		54 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2016 Every severe thunderstorm warning in 2016

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.