Alert archive / Massachusetts / Tornado Warnings in 2014
Tornado Warning 1, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this tornado warning at Jul 7, 2014, 4:48 PM EDT for Middlesex County, Worcester County, Massachusetts. It was in force for 42 min. 1 report 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 7, 2014, 4:48 PM EDT (20:48 UTC)
- Expired
- Jul 7, 2014, 5:30 PM EDT
- In force
- 42 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
Counties Middlesex County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 73 km from the middle of the area, began a volume at 20:51 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 7, 4:55 PM EDT | TSTM WND DMG | Leominster, MA | ONE FOOT DIAMETER TREE FELL ON A HOUSE ON BAY STREET |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Chatham, MA (KCHH), launched 12:00Z, 8.8 hours before the alert went out and 163 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1151 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
408
WFUS51 KBOX 072048
TORBOX
MAC017-027-072130-
/O.NEW.KBOX.TO.W.0001.140707T2048Z-140707T2130Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
448 PM EDT MON JUL 7 2014
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
* TORNADO WARNING FOR...
EAST CENTRAL WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
CENTRAL MIDDLESEX COUNTY IN NORTHEAST MASSACHUSETTS...
* UNTIL 530 PM EDT
* AT 448 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
NEAR LEOMINSTER...AND WAS MOVING EAST AT 30 MPH.
* SOME LOCATIONS IMPACTED INCLUDE...
LEOMINSTER...BILLERICA...CHELMSFORD...WESTFORD...ACTON...CONCORD...
BEDFORD...LUNENBURG...LITTLETON...LANCASTER...AYER...SHIRLEY...
HARVARD...BOXBOROUGH AND CARLISLE.
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 4250 7177 4255 7177 4259 7130 4246 7130
TIME...MOT...LOC 2048Z 270DEG 25KT 4253 7171
$$
JWD3 follow-up statements
927
WWUS51 KBOX 072055
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
455 PM EDT MON JUL 7 2014
MAC017-027-072130-
/O.CON.KBOX.TO.W.0001.000000T0000Z-140707T2130Z/
WORCESTER MA-MIDDLESEX MA-
455 PM EDT MON JUL 7 2014
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR EAST
CENTRAL WORCESTER AND CENTRAL MIDDLESEX COUNTIES...
AT 454 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR
SHIRLEY...OR NEAR LEOMINSTER...MOVING EAST AT 30 MPH.
AS OF 454 PM...THERE HAS BEEN NO CONFIRMATION OF A TORNADO.
LOCATIONS IMPACTED INCLUDE...
BILLERICA...CHELMSFORD...WESTFORD...ACTON...CONCORD...BEDFORD...
LUNENBURG...LITTLETON...LANCASTER...AYER...SHIRLEY...HARVARD...
BOXBOROUGH AND CARLISLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! LEAVE MOBILE HOMES AND GO TO A STRONG BUILDING. GO TO
THE BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR. STAY AWAY FROM
WINDOWS.
DO NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. IF YOU CANNOT SAFELY
DRIVE AWAY FROM THE TORNADO...AS A LAST RESORT...EITHER PARK YOUR
VEHICLE AND STAY PUT...OR ABANDON YOUR VEHICLE AND LIE DOWN IN A LOW
LYING AREA AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4251 7169 4255 7169 4259 7130 4246 7130
TIME...MOT...LOC 2054Z 269DEG 25KT 4253 7164
$$
JWD592
WWUS51 KBOX 072105
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
505 PM EDT MON JUL 7 2014
MAC027-072114-
/O.CAN.KBOX.TO.W.0001.000000T0000Z-140707T2130Z/
WORCESTER MA-
505 PM EDT MON JUL 7 2014
...THE TORNADO WARNING FOR EAST CENTRAL WORCESTER COUNTY IS
CANCELED...
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT
OF THE COUNTY. THEREFORE THE WARNING HAS BEEN CANCELED.
&&
LAT...LON 4257 7130 4246 7130 4248 7144 4249 7153
4249 7155 4252 7153 4254 7153
TIME...MOT...LOC 2104Z 269DEG 25KT 4252 7155
$$
MAC017-072130-
/O.CON.KBOX.TO.W.0001.000000T0000Z-140707T2130Z/
MIDDLESEX MA-
505 PM EDT MON JUL 7 2014
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR CENTRAL
MIDDLESEX COUNTY...
AT 504 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED OVER
HARVARD...OR 10 MILES SOUTHWEST OF CHELMSFORD...MOVING EAST AT 30
MPH.
AS OF 504 PM...THERE HAS BEEN NO CONFIRMATION OF A TORNADO.
HOWEVER...A TORNADO MAY TOUCH DOWN AT ANY TIME!
LOCATIONS IMPACTED INCLUDE...
BILLERICA...CHELMSFORD...WESTFORD...ACTON...CONCORD...BEDFORD...
LITTLETON...BOXBOROUGH AND CARLISLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! LEAVE MOBILE HOMES AND GO TO A STRONG BUILDING. GO TO
THE BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR. STAY AWAY FROM
WINDOWS.
DO NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. IF YOU CANNOT SAFELY
DRIVE AWAY FROM THE TORNADO...AS A LAST RESORT...EITHER PARK YOUR
VEHICLE AND STAY PUT...OR ABANDON YOUR VEHICLE AND LIE DOWN IN A LOW
LYING AREA AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4257 7130 4246 7130 4248 7144 4249 7153
4249 7155 4252 7153 4254 7153
TIME...MOT...LOC 2104Z 269DEG 25KT 4252 7155
$$
JWD804
WWUS51 KBOX 072119
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
519 PM EDT MON JUL 7 2014
MAC017-072130-
/O.CON.KBOX.TO.W.0001.000000T0000Z-140707T2130Z/
MIDDLESEX MA-
519 PM EDT MON JUL 7 2014
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR CENTRAL
MIDDLESEX COUNTY...
AS OF 518 PM...THERE HAS BEEN NO CONFIRMATION OF A TORNADO.
AT 518 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED OVER
ACTON...OR NEAR CHELMSFORD...MOVING EAST AT 30 MPH.
LOCATIONS IMPACTED INCLUDE...
BILLERICA...WESTFORD...ACTON...CONCORD...BEDFORD...LITTLETON AND
CARLISLE.
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.
DO NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. IF YOU CANNOT SAFELY
DRIVE AWAY FROM THE TORNADO...AS A LAST RESORT...EITHER PARK YOUR
VEHICLE AND STAY PUT...OR ABANDON YOUR VEHICLE AND LIE DOWN IN A LOW
LYING AREA AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4255 7130 4247 7130 4248 7144 4248 7146
4250 7148 4251 7148 4253 7147
TIME...MOT...LOC 2118Z 270DEG 25KT 4251 7142
$$
JWDThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 2:25 PM EDT | Special Weather Statement | BOX | Franklin | 65 min |
| Jul 7, 2:41 PM EDT | Severe Thunderstorm Warning | BOX | Franklin | 49 min |
| Jul 7, 3:21 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Worcester | 28 min |
| Jul 7, 3:46 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Middlesex, Worcester | 44 min |
| Jul 7, 4:21 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Worcester | 39 min |
| Jul 7, 4:24 PM EDT | Flash Flood Warning | BOX | Middlesex, Worcester | 111 min |
| Jul 7, 4:41 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Worcester | 37 min |
| Jul 7, 5:12 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Worcester | 36 min |
| Jul 7, 5:29 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex, Suffolk | 46 min |
| Jul 7, 5:32 PM EDT | Special Marine Warning | BOX | 58 min | |
| Jul 7, 5:40 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Worcester | 36 min |
| Jul 7, 5:51 PM EDT | Tornado Warning | BOX | Middlesex, Suffolk | 24 min |
| Jul 7, 6:11 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex | 34 min |
| Jul 7, 6:33 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex, Suffolk | 27 min |
| Jul 7, 6:36 PM EDT | Special Marine Warning | BOX | 24 min | |
| Jul 7, 6:52 PM EDT | Special Weather Statement | BOX | Franklin, Hampshire, Worcester | 83 min |
| Jul 7, 7:16 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire | 44 min |
Nearby
Tornado Warnings in Massachusetts, 2014Every tornado warning in 2014Tornadoes 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.