Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 105, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Sep 8, 2012, 5:45 PM EDT for 4 counties in Massachusetts; Cheshire County, Hillsborough County, New Hampshire. It was in force for 60 min. 7 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
- Sep 8, 2012, 5:45 PM EDT (21:45 UTC)
- Expired
- Sep 8, 2012, 6:45 PM EDT
- In force
- 60 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
Counties Franklin County, MA, Hampden County, MA, Hampshire County, MA, Worcester County, MA, Cheshire County, NH, Hillsborough County, NH
The radar
The Albany radar (KENX), 132 km from the middle of the area, began a volume at 21:46 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 |
|---|---|---|---|
| Sep 8, 5:47 PM EDT | NON-TSTM WND DMG | Wendell, MA | TREE DOWN ON WIRES ON NEW SALEM ROAD |
| Sep 8, 6:23 PM EDT | TSTM WND DMG | Ashfield, MA | TREE DOWN ON WIRES ON HILL ROAD. |
| Sep 8, 6:28 PM EDT | TSTM WND DMG | Conway, MA | TREE DOWN BLOCKING ROUTE 116 NEAR THE ASHFIELD TOWN LINE |
| Sep 8, 6:42 PM EDT | TSTM WND DMG | Deerfield, MA | TREE DOWN ON WIRES ON LOWER ROAD |
| Sep 8, 6:44 PM EDT | TSTM WND DMG | South Deerfield, MA | WIRES DOWN |
| Sep 8, 6:48 PM EDT | TSTM WND DMG | Swanzey, NH | TREE DOWN ON WIRES ON HOMESTEAD AVE |
| Sep 8, 6:54 PM EDT | TSTM WND DMG | Northampton, MA | TREES AND WIRES DOWN AT THE INTERSECTION OF KING AND TRUMBLE STREETS |
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 |
|---|---|---|---|
| Sep 8, 11:18 AM EDT | Tornado Watch | SPC | 10 hr |
| Sep 8, 4:47 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 9.8 hours before the alert went out and 111 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
- 113 J/kg
- Mixed-layer CIN
- -168 J/kg
- Mixed-layer LCL
- 869 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 294 m²/s²
- 0-3 km storm-relative helicity
- 397 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
189
WUUS51 KBOX 082145
SVRBOX
MAC011-013-015-027-NHC005-011-082245-
/O.NEW.KBOX.SV.W.0105.120908T2145Z-120908T2245Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
545 PM EDT SAT SEP 8 2012
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EXTREME NORTHWESTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
CHESHIRE COUNTY IN SOUTHERN NEW HAMPSHIRE...
THIS INCLUDES THE CITY OF KEENE...
NORTHWESTERN HILLSBOROUGH COUNTY IN SOUTHERN NEW HAMPSHIRE...
FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...
THIS INCLUDES THE CITY OF GREENFIELD...
NORTH CENTRAL HAMPDEN COUNTY IN WESTERN MASSACHUSETTS...
WESTERN HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS...
THIS INCLUDES THE CITIES OF...NORTHAMPTON...AMHERST...
* UNTIL 645 PM EDT
* AT 540 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THE LINE OF STORMS STRETCHED FROM STRATTON IN
WINDHAM COUNTY VERMONT SOUTHWEST TO PITTSFIELD IN BERKSHIRE COUNTY
AND ON SOUTHWEST INTO EASTERN NEW YORK. THE LINE WAS
MOVING TO THE EAST AT 40 MPH. THERE HAVE BEEN NUMEROUS REPORTS
OF DOWNED TREES WITH THIS LINE.
* SOME LOCATIONS IN THE WARNING INCLUDE...KEENE...SWANZEY...
CHARLEMONT...GREENFIELD...PLAINFIELD...WORTHINGTON...AND
NORTHAMPTON.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND LARGE HAIL...AS WELL
AS DEADLY LIGHTNING AND TORRENTIAL RAIN. GET TO SAFE SHELTER NOW...
INSIDE A STURDY BUILDING OR IN A VEHICLE. DO NOT SEEK SHELTER UNDER
TREES. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING. DRIVERS SHOULD BE ALERT FOR PONDING OF WATER AND AVOID
FLOODED ROADS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
SATURDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND
SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND.
&&
FIELD
LAT...LON 4295 7203 4267 7223 4223 7266 4224 7301
4239 7307 4240 7301 4270 7296 4270 7302
4274 7303 4273 7247 4288 7256 4295 7254
4301 7245 4316 7246 4314 7238 4319 7216
4314 7217 4313 7205 4319 7203 4321 7191
TIME...MOT...LOC 2142Z 275DEG 33KT 4331 7268 4300 7277
4274 7296 4261 7308 4218 7348
$$
FIELD1 follow-up statement
755
WWUS51 KBOX 082213
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
613 PM EDT SAT SEP 8 2012
MAC011-013-015-027-NHC005-011-082245-
/O.CON.KBOX.SV.W.0105.000000T0000Z-120908T2245Z/
CHESHIRE NH-WORCESTER MA-FRANKLIN MA-HAMPSHIRE MA-HILLSBOROUGH NH-
HAMPDEN MA-
613 PM EDT SAT SEP 8 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR NORTH CENTRAL HAMPDEN...NORTHWESTERN HILLSBOROUGH...WESTERN
HAMPSHIRE...FRANKLIN...EXTREME NORTHWESTERN WORCESTER AND CHESHIRE
COUNTIES...
AT 606 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THE LINE STRETCHED FROM NEAR BELLOWS FALLS
SOUTHWEST TO CHARLEMONT AND TO WORTHINGTON AND GREAT BARRINGTON.
THE STRONGEST STORM WAS 5 MILES WEST OF WALPOLE NEW HAMPSHIRE.
THE LINE OF STORMS WAS MOVING TO THE EAST AT 40 MPH.
THESE STORMS HAVE A HISTORY OF PRODUCING DOWNED TREES AND WIRES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
SATURDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND
SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND.
&&
LAT...LON 4295 7203 4267 7223 4223 7266 4224 7301
4239 7307 4240 7301 4270 7296 4270 7302
4274 7303 4273 7247 4288 7256 4295 7254
4301 7245 4316 7246 4314 7238 4319 7216
4314 7217 4313 7205 4319 7203 4321 7191
TIME...MOT...LOC 2210Z 275DEG 33KT 4329 7233 4298 7242
4272 7261 4259 7273 4216 7313
$$
FIELDThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 2:06 PM EDT | Special Weather Statement | BOX | Franklin | 24 min |
| Sep 8, 2:30 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 45 min |
| Sep 8, 3:51 PM EDT | Special Weather Statement | BOX | Hampden | 24 min |
| Sep 8, 5:09 PM EDT | Special Weather Statement | BOX | Middlesex | 51 min |
| Sep 8, 5:32 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex, Worcester | 36 min |
| Sep 8, 5:56 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 64 min |
| Sep 8, 6:31 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire, Middlesex, Worcester | 59 min |
| Sep 8, 6:50 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 25 min |
| Sep 8, 6:58 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire, Worcester | 32 min |
| Sep 8, 7:15 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 30 min |
| Sep 8, 7:30 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire, Middlesex, Worcester | 60 min |
| Sep 8, 4:09 PM EDT | Special Weather Statement | BOX | Cheshire | 51 min |
| Sep 8, 4:30 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire, Hillsborough | 45 min |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 2012Severe Thunderstorm Warnings in New Hampshire, 2012Every severe thunderstorm warning in 2012
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.