Alert archive / Massachusetts / Tornado Warnings in 2014

Tornado Warning 5, NWS Boston/Norton, MA

July 28, 2014Hampden County, Worcester County, Massachusetts

NWS Boston/Norton, MA issued this tornado warning at Jul 28, 2014, 4:24 PM EDT for Hampden County, Worcester County, Massachusetts. It was in force for 21 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 28, 2014, 4:24 PM EDT (20:24 UTC)
Expired: Jul 28, 2014, 4:45 PM EDT
In force: 21 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

Counties Hampden County, MA, Worcester County, MA

The radar

The Boston radar (KBOX), 80 km from the middle of the area, began a volume at 20:26 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.

What was reported inside it

Time	Report	Where	Remark
Jul 28, 4:38 PM EDT	TSTM WND DMG	Sturbridge, MA	3 INCH DIAMETER BRANCHES DOWN ON ALLEN ROAD. 4 INCH DIAMETER BRANCH DOWN.
Jul 28, 4:40 PM EDT	TSTM WND DMG	Brookfield, MA	LARGE BRANCH AND WIRES DOWN ON CAR IN FRONT OF BROOKFIELD FIRE STATION.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 28, 2:07 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 8.4 hours before the alert went out and 156 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: 76 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 552 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 200 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

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

774 
WFUS51 KBOX 282024
TORBOX
MAC013-027-282115-
/O.NEW.KBOX.TO.W.0005.140728T2024Z-140728T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
424 PM EDT MON JUL 28 2014

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL HAMPDEN COUNTY IN WESTERN MASSACHUSETTS...
  SOUTHWESTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...

* UNTIL 515 PM EDT
    
* AT 424 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  OVER BROOKFIELD...OR 16 MILES SOUTHWEST OF WORCESTER...AND WAS
  MOVING NORTHEAST AT 25 MPH.

* SOME LOCATIONS IMPACTED INCLUDE...
  WORCESTER...SOUTHBRIDGE...AUBURN...OXFORD...MILLBURY...CHARLTON...
  SPENCER...LEICESTER...STURBRIDGE...RUTLAND...WARREN...PAXTON...
  NORTH BROOKFIELD...WEST BROOKFIELD...BRIMFIELD...BROOKFIELD...
  HOLLAND...EAST BROOKFIELD...OAKHAM AND NEW BRAINTREE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! DO NOT WAIT TO SEE THE TORNADO. GO TO A BASEMENT OR
INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING...AWAY FROM
WINDOWS. IF IN A VEHICLE...A MOBILE HOME OR OUTDOORS...GET TO THE
CLOSEST SHELTER. PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4207 7214 4220 7225 4237 7198 4220 7176
TIME...MOT...LOC 2024Z 241DEG 21KT 4217 7211 
$$

KJC

2 follow-up statements

155 
WWUS51 KBOX 282036
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
436 PM EDT MON JUL 28 2014

MAC013-282045-
/O.CAN.KBOX.TO.W.0005.000000T0000Z-140728T2115Z/
HAMPDEN MA-
436 PM EDT MON JUL 28 2014

...THE TORNADO WARNING FOR EAST CENTRAL HAMPDEN COUNTY IS CANCELED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT 
OF THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELED.

LAT...LON 4216 7204 4222 7209 4235 7196 4222 7179
TIME...MOT...LOC 2035Z 241DEG 21KT 4220 7203 

$$

MAC027-282115-
/O.CON.KBOX.TO.W.0005.000000T0000Z-140728T2115Z/
WORCESTER MA-
436 PM EDT MON JUL 28 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR SOUTH
CENTRAL WORCESTER COUNTY...
    
AT 435 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED OVER EAST
BROOKFIELD...OR 12 MILES WEST OF WORCESTER...MOVING NORTHEAST AT 25
MPH.

LOCATIONS IMPACTED INCLUDE...
WORCESTER...AUBURN...CHARLTON...SPENCER...LEICESTER...STURBRIDGE...
RUTLAND...PAXTON...NORTH BROOKFIELD...BROOKFIELD AND EAST BROOKFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! LEAVE MOBILE HOMES AND GO TO A STRONG BUILDING. GO TO
THE BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR. STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4216 7204 4222 7209 4235 7196 4222 7179
TIME...MOT...LOC 2035Z 241DEG 21KT 4220 7203 

$$

KJC

171 
WWUS51 KBOX 282045
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
445 PM EDT MON JUL 28 2014

MAC027-282055-
/O.CAN.KBOX.TO.W.0005.000000T0000Z-140728T2115Z/
WORCESTER MA-
445 PM EDT MON JUL 28 2014

...THE TORNADO WARNING FOR SOUTH CENTRAL WORCESTER COUNTY IS
CANCELED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED. 
THEREFORE THE WARNING HAS BEEN CANCELED.

LAT...LON 4216 7204 4222 7209 4235 7196 4222 7179
TIME...MOT...LOC 2044Z 241DEG 21KT 4223 7196 

$$

KJC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 8:25 PM EDT	Special Weather Statement	BOX	Hampden	50 min
Jul 28, 5:46 AM EDT	Special Weather Statement	BOX	Hampshire	59 min
Jul 28, 6:54 AM EDT	Severe Thunderstorm Warning	BOX	Franklin	51 min
Jul 28, 8:44 AM EDT	Special Weather Statement	BOX	Suffolk	46 min
Jul 28, 8:50 AM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex, Norfolk, Suffolk	40 min
Jul 28, 9:18 AM EDT	Areal Flood Advisory	BOX	Essex, Middlesex, Norfolk, Suffolk	57 min
Jul 28, 9:33 AM EDT	Flash Flood Warning	BOX	Essex, Middlesex, Suffolk	117 min
Jul 28, 9:44 AM EDT	Tornado Warning	BOX	Essex	25 min
Jul 28, 10:19 AM EDT	Special Marine Warning	BOX		41 min
Jul 28, 2:40 PM EDT	Special Weather Statement	BOX	Franklin	50 min
Jul 28, 3:32 PM EDT	Special Weather Statement	BOX	Franklin	43 min
Jul 28, 3:58 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Worcester	62 min
Jul 28, 4:00 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Worcester	47 min
Jul 28, 4:14 PM EDT	Areal Flood Advisory	BOX	Franklin, Worcester	2 hr
Jul 28, 4:17 PM EDT	Severe Thunderstorm Warning	BOX	Middlesex, Worcester	43 min
Jul 28, 5:43 PM EDT	Areal Flood Advisory	BOX	Franklin, Worcester	2 hr
Jul 28, 5:47 PM EDT	Severe Thunderstorm Warning	BOX	Essex, Middlesex	58 min
Jul 28, 5:48 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	34 min
Jul 28, 6:18 PM EDT	Areal Flood Advisory	BOX	Essex, Middlesex	117 min
Jul 28, 6:22 PM EDT	Severe Thunderstorm Warning	BOX	Essex	23 min
Jul 28, 6:43 PM EDT	Special Marine Warning	BOX		62 min

Nearby

Tornado Warnings in Massachusetts, 2014 Every tornado warning in 2014 Tornadoes in 2014

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.