Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 98, NWS Boston/Norton, MA

August 13, 2016Hampden County, Massachusetts

NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 13, 2016, 2:52 PM EDT for Hampden 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
Aug 13, 2016, 2:52 PM EDT (18:52 UTC)
Expired
Aug 13, 2016, 3:15 PM EDT
In force
23 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Hampden County, MA

The radar

The Boston radar (KBOX), 96 km from the middle of the area, began a volume at 18:54 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, 6.9 hours before the alert went out and 142 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-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2016-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 356 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2016-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
356 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
857 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

729 
WUUS51 KBOX 131852
SVRBOX
MAC013-131915-
/O.NEW.KBOX.SV.W.0098.160813T1852Z-160813T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
252 PM EDT SAT AUG 13 2016

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN HAMPDEN COUNTY IN WESTERN MASSACHUSETTS...

* UNTIL 315 PM EDT

* AT 251 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER
  HAMPDEN...OR 8 MILES EAST OF SPRINGFIELD...MOVING EAST AT 20 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  WILBRAHAM...PALMER...MONSON...HAMPDEN...WARREN...BRIMFIELD...
  HOLLAND AND WALES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4221 7226 4218 7226 4216 7220 4215 7220
      4215 7218 4204 7215 4204 7244 4213 7247
TIME...MOT...LOC 1851Z 253DEG 19KT 4209 7238 

HAIL...<.75IN
WIND...60MPH
 
$$

NOCERA

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 8:01 PM EDTSpecial Weather StatementBOXHampden, Hampshire44 min
Aug 13, 4:31 AM EDTExcessive Heat WarningBOXHampden14 hr
Aug 13, 1:32 PM EDTSpecial Marine WarningBOX28 min
Aug 13, 1:37 PM EDTSpecial Weather StatementBOXHampden38 min
Aug 13, 1:52 PM EDTSevere Thunderstorm WarningBOXHampden38 min
Aug 13, 2:24 PM EDTAreal Flood AdvisoryBOXHampden66 min
Aug 13, 4:09 PM EDTHeat AdvisoryBOXBarnstable, Bristol, Dukes, Essex, Hampden, Middlesex and 4 more27 hr
Aug 13, 4:34 PM EDTAreal Flood AdvisoryBOXMiddlesex, Norfolk, Suffolk, Worcester116 min
Aug 13, 5:46 PM EDTSevere Thunderstorm WarningBOXWorcester29 min
Aug 13, 6:38 PM EDTAreal Flood AdvisoryBOXNorfolk, Worcester52 min

Nearby

Severe Thunderstorm Warnings in Massachusetts, 2016Every 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.