Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 24, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 1, 2011, 8:48 PM EDT for 7 counties in Massachusetts. It was in force for 42 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
- Jun 1, 2011, 8:48 PM EDT (00:48 UTC)
- Expired
- Jun 1, 2011, 9:30 PM EDT
- In force
- 42 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
Counties Barnstable County, MA, Essex County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 50 km from the middle of the area, began a volume at 00:50 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 |
|---|---|---|---|
| Jun 1, 8:54 PM EDT | TSTM WND DMG | Concord, MA | SEVERAL 4 TO 6 INCH DIAMETER TREES DOWN. |
| Jun 1, 9:26 PM EDT | TSTM WND DMG | Boston, MA | NUMEROUS REPORTS OF LARGE TREES DOWN THROUGHOUT THE CITY AS WELL AS NUMEROUS POWER OUTAGES. |
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 |
|---|---|---|---|
| Jun 1, 7:40 PM EDT | Tornado Watch | SPC | 2 hr |
The nearest sounding before it
Chatham, MA (KCHH), launched 00:00Z, 0.8 hours before the alert went out and 115 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
- 801 J/kg
- Mixed-layer CIN
- -273 J/kg
- Mixed-layer LCL
- 869 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 297 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
168
WUUS51 KBOX 020048
SVRBOX
MAC001-009-017-021-023-025-027-020130-
/O.NEW.KBOX.SV.W.0024.110602T0048Z-110602T0130Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
848 PM EDT WED JUN 1 2011
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EXTREME EAST CENTRAL WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
SOUTH CENTRAL ESSEX COUNTY IN EASTERN MASSACHUSETTS...
THIS INCLUDES THE CITY OF LYNN...
EXTREME NORTH CENTRAL NORFOLK COUNTY IN EASTERN MASSACHUSETTS...
THIS INCLUDES THE CITY OF BROOKLINE...
SUFFOLK COUNTY IN EASTERN MASSACHUSETTS...
THIS INCLUDES THE CITY OF BOSTON...
EXTREME NORTHWESTERN BARNSTABLE COUNTY IN SOUTHEAST
MASSACHUSETTS...
CENTRAL MIDDLESEX COUNTY IN SOUTHEAST MASSACHUSETTS...
THIS INCLUDES THE CITIES OF...WALTHAM...SOMERVILLE...NEWTON...
FRAMINGHAM...CAMBRIDGE...
EXTREME NORTH CENTRAL PLYMOUTH COUNTY IN SOUTHEAST MASSACHUSETTS...
* UNTIL 930 PM EDT
* AT 845 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
MAYNARD...OR 8 MILES NORTH OF FRAMINGHAM...AND WAS MOVING EAST AT
40 MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE...WAYLAND...CONCORD...
LINCOLN...WELLESLEY...BEDFORD...WESTON...LEXINGTON...BURLINGTON...
WATERTOWN...BELMONT...ARLINGTON...WOBURN...WINCHESTER...MEDFORD...
STONEHAM...WAKEFIELD...MELROSE...MALDEN...EVERETT...CHELSEA...
SAUGUS...REVERE...WINTHROP...HULL...SWAMPSCOTT...SALEM AND
MARBLEHEAD.
A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCED WARNING. REMAIN CALM...BUT TAKE
COVER NOW. GO TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. AVOID WINDOWS.
&&
LAT...LON 4252 7083 4248 7084 4245 7093 4242 7091
4245 7095 4241 7098 4235 7095 4235 7099
4233 7101 4235 7088 4232 7092 4230 7088
4229 7088 4229 7094 4231 7092 4232 7095
4230 7099 4231 7155 4251 7154 4253 7079
TIME...MOT...LOC 0048Z 270DEG 36KT 4242 7141
$$
BELK2 follow-up statements
753
WWUS51 KBOX 020118
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
918 PM EDT WED JUN 1 2011
MAC027-020128-
/O.CAN.KBOX.SV.W.0024.000000T0000Z-110602T0130Z/
WORCESTER MA-
918 PM EDT WED JUN 1 2011
...THE SEVERE THUNDERSTORM WARNING FOR EXTREME EAST CENTRAL WORCESTER
COUNTY IS CANCELLED...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT WEDNESDAY EVENING
FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE
AND CENTRAL RHODE ISLAND.
LAT...LON 4252 7083 4248 7084 4245 7093 4242 7091
4245 7095 4241 7098 4235 7095 4235 7099
4233 7101 4235 7088 4232 7092 4230 7088
4229 7088 4229 7094 4231 7092 4232 7095
4230 7099 4231 7130 4252 7124 4253 7079
TIME...MOT...LOC 0118Z 270DEG 36KT 4242 7100
$$
MAC001-009-017-021-023-025-020130-
/O.CON.KBOX.SV.W.0024.000000T0000Z-110602T0130Z/
BARNSTABLE MA-MIDDLESEX MA-NORFOLK MA-ESSEX MA-PLYMOUTH MA-SUFFOLK MA-
918 PM EDT WED JUN 1 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR SUFFOLK...EXTREME NORTH CENTRAL PLYMOUTH...SOUTH CENTRAL ESSEX...
EXTREME NORTH CENTRAL NORFOLK...EAST CENTRAL MIDDLESEX AND EXTREME
NORTHWESTERN BARNSTABLE COUNTIES...
AT 917 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR REVERE...OR NEAR
SOMERVILLE...MOVING EAST AT 40 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WINTHROP...LYNN...HULL...SWAMPSCOTT...SALEM AND MARBLEHEAD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
&&
LAT...LON 4252 7083 4248 7084 4245 7093 4242 7091
4245 7095 4241 7098 4235 7095 4235 7099
4233 7101 4235 7088 4232 7092 4230 7088
4229 7088 4229 7094 4231 7092 4232 7095
4230 7099 4231 7130 4252 7124 4253 7079
TIME...MOT...LOC 0118Z 270DEG 36KT 4242 7100
$$
DOODY492
WWUS51 KBOX 020130 RRA
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
930 PM EDT WED JUN 1 2011
MAC001-009-017-021-023-025-020140-
/O.EXP.KBOX.SV.W.0024.000000T0000Z-110602T0130Z/
BARNSTABLE MA-MIDDLESEX MA-NORFOLK MA-ESSEX MA-PLYMOUTH MA-
SUFFOLK MA-
930 PM EDT WED JUN 1 2011
...THE SEVERE THUNDERSTORM WARNING FOR SUFFOLK...EXTREME NORTH
CENTRAL PLYMOUTH...SOUTH CENTRAL ESSEX...EXTREME NORTH CENTRAL
NORFOLK...EAST CENTRAL MIDDLESEX AND EXTREME NORTHWESTERN BARNSTABLE
COUNTIES HAS EXPIRED...
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT WEDNESDAY EVENING
FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE
AND CENTRAL RHODE ISLAND.
LAT...LON 4252 7083 4248 7084 4245 7093 4242 7091
4245 7095 4241 7098 4235 7095 4235 7099
4233 7101 4235 7088 4232 7092 4230 7088
4229 7088 4229 7094 4231 7092 4232 7095
4230 7099 4231 7130 4252 7124 4253 7079
TIME...MOT...LOC 0118Z 270DEG 36KT 4242 7100
$$
BELKThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 8:03 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Worcester | 27 min |
| Jun 1, 8:10 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire, Worcester | 44 min |
| Jun 1, 8:15 PM EDT | Special Weather Statement | BOX | Middlesex | 30 min |
| Jun 1, 8:22 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Norfolk, Worcester | 38 min |
| Jun 1, 8:39 PM EDT | Special Weather Statement | BOX | Essex, Middlesex, Suffolk | 66 min |
| Jun 1, 8:47 PM EDT | Special Marine Warning | BOX | 58 min | |
| Jun 1, 8:58 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Norfolk, Worcester | 32 min |
| Jun 1, 9:03 PM EDT | Special Marine Warning | BOX | 57 min | |
| Jun 1, 9:22 PM EDT | Special Weather Statement | BOX | Dukes | 53 min |
| Jun 1, 9:34 PM EDT | Special Marine Warning | BOX | 56 min | |
| Jun 1, 9:34 PM EDT | Special Weather Statement | BOX | Norfolk, Suffolk | 56 min |
| Jun 1, 9:54 PM EDT | Special Marine Warning | BOX | 50 min | |
| Jun 1, 9:58 PM EDT | Special Marine Warning | BOX | 62 min | |
| Jun 1, 10:53 PM EDT | Special Weather Statement | BOX | Barnstable | 37 min |
| Jun 1, 10:55 PM EDT | Special Marine Warning | BOX | 40 min | |
| Jun 1, 11:49 PM EDT | Special Marine Warning | BOX | 26 min | |
| Jun 1, 11:55 PM EDT | Special Weather Statement | BOX | Nantucket | 50 min |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 2011Every severe thunderstorm warning in 2011
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.