Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 13, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at May 29, 2012, 6:39 PM EDT for Cheshire County, New Hampshire; 4 counties in Massachusetts. It was in force for 66 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
- May 29, 2012, 6:39 PM EDT (22:39 UTC)
- Expired
- May 29, 2012, 7:45 PM EDT
- In force
- 66 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
The radar
The Albany radar (KENX), 117 km from the middle of the area, began a volume at 22:42 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 29, 3:44 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Albany, NY (KALY), launched 12:00Z, 10.7 hours before the alert went out and 99 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
- 1908 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 1026 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 141 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
188
WUUS51 KBOX 292239
SVRBOX
MAC011-013-015-027-NHC005-292345-
/O.NEW.KBOX.SV.W.0013.120529T2239Z-120529T2345Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
639 PM EDT TUE MAY 29 2012
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
SOUTHERN CHESHIRE COUNTY IN SOUTHERN NEW HAMPSHIRE...
THIS INCLUDES THE CITY OF JAFFREY...
FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...
THIS INCLUDES THE CITY OF GREENFIELD...
NORTHERN HAMPDEN COUNTY IN WESTERN MASSACHUSETTS...
THIS INCLUDES THE CITIES OF...SPRINGFIELD...CHICOPEE...
HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS...
THIS INCLUDES THE CITIES OF...NORTHAMPTON...AMHERST...
* UNTIL 745 PM EDT
* AT 637 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM BERNARDSTON TO BLANDFORD...OR
ALONG A LINE EXTENDING FROM 9 MILES NORTH OF GREENFIELD TO 12 MILES
NORTH OF HARTLAND...AND WAS MOVING EAST AT 30 MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE...HUNTINGTON...HINSDALE...
DEERFIELD...WILLIAMSBURG...GILL...NORTHFIELD...WESTHAMPTON...
RUSSELL...WHATELY...MONTAGUE...WINCHESTER...SUNDERLAND...
MONTGOMERY...SOUTHAMPTON...HATFIELD...EASTHAMPTON...WARWICK...
ERVING...WESTFIELD...HADLEY...LEVERETT...SWANZEY...RICHMOND...
WENDELL...HOLYOKE...ORANGE...WEST SPRINGFIELD...SOUTH HADLEY...
SHUTESBURY...TROY...ROYALSTON...NEW SALEM...GRANBY...FITZWILLIAM...
PELHAM...ATHOL...BELCHERTOWN...LUDLOW...WINCHENDON...RINDGE...
PHILLIPSTON...PETERSHAM...WILBRAHAM AND PALMER.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY EVENING FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS
AND SOUTHERN NEW HAMPSHIRE.
&&
LAT...LON 4216 7303 4227 7301 4274 7273 4273 7247
4276 7252 4281 7255 4283 7255 4292 7200
4279 7198 4209 7235 4211 7308 4214 7308
TIME...MOT...LOC 2238Z 270DEG 28KT 4271 7253 4216 7299
$$
FRANK3 follow-up statements
205
WWUS51 KBOX 292255
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
655 PM EDT TUE MAY 29 2012
MAC011-013-015-027-NHC005-292345-
/O.CON.KBOX.SV.W.0013.000000T0000Z-120529T2345Z/
CHESHIRE NH-WORCESTER MA-FRANKLIN MA-HAMPSHIRE MA-HAMPDEN MA-
655 PM EDT TUE MAY 29 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR NORTHERN HAMPDEN...HAMPSHIRE...FRANKLIN...NORTHWESTERN WORCESTER
AND SOUTHERN CHESHIRE COUNTIES...
AT 653 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM WARWICK TO RUSSELL...OR
ALONG A LINE EXTENDING FROM 14 MILES NORTHEAST OF GREENFIELD TO 13
MILES WEST OF CHICOPEE...MOVING EAST AT 30 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SOUTHAMPTON...HATFIELD...EASTHAMPTON...ERVING...WESTFIELD...
LEVERETT...HADLEY...SWANZEY...RICHMOND...WENDELL...AMHERST...
HOLYOKE...ORANGE...WEST SPRINGFIELD...SOUTH HADLEY...SHUTESBURY...
TROY...ROYALSTON...NEW SALEM...GRANBY...FITZWILLIAM...PELHAM...
ATHOL...SPRINGFIELD...BELCHERTOWN...LUDLOW...WINCHENDON...JAFFREY...
RINDGE...PHILLIPSTON...PETERSHAM...WILBRAHAM AND PALMER
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY EVENING FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS
AND SOUTHERN NEW HAMPSHIRE.
&&
LAT...LON 4216 7303 4227 7301 4274 7273 4273 7247
4276 7252 4281 7255 4283 7255 4292 7200
4279 7198 4209 7235 4211 7308 4214 7308
TIME...MOT...LOC 2255Z 270DEG 28KT 4271 7235 4216 7281
$$
FRANK205
WWUS51 KBOX 292315
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
715 PM EDT TUE MAY 29 2012
MAC011-013-015-027-NHC005-292345-
/O.CON.KBOX.SV.W.0013.000000T0000Z-120529T2345Z/
CHESHIRE NH-WORCESTER MA-FRANKLIN MA-HAMPSHIRE MA-HAMPDEN MA-
715 PM EDT TUE MAY 29 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR NORTHERN HAMPDEN...HAMPSHIRE...EASTERN FRANKLIN...NORTHWESTERN
WORCESTER AND SOUTHERN CHESHIRE COUNTIES...
AT 713 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM ROYALSTON TO CHICOPEE...OR
ALONG A LINE EXTENDING FROM 10 MILES SOUTHWEST OF JAFFREY TO
CHICOPEE...MOVING EAST AT 30 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SPRINGFIELD...BELCHERTOWN...LUDLOW...WINCHENDON...RINDGE...
PHILLIPSTON...PETERSHAM...WILBRAHAM AND PALMER
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY EVENING FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS
AND SOUTHERN NEW HAMPSHIRE.
&&
LAT...LON 4216 7303 4227 7301 4251 7264 4270 7243
4273 7247 4276 7252 4276 7242 4281 7236
4292 7200 4279 7198 4209 7235 4211 7308
4214 7308
TIME...MOT...LOC 2315Z 270DEG 28KT 4271 7214 4216 7260
$$
FRANK718
WWUS51 KBOX 292341
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
741 PM EDT TUE MAY 29 2012
MAC011-013-015-027-NHC005-292350-
/O.EXP.KBOX.SV.W.0013.000000T0000Z-120529T2345Z/
CHESHIRE NH-WORCESTER MA-FRANKLIN MA-HAMPSHIRE MA-HAMPDEN MA-
741 PM EDT TUE MAY 29 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN HAMPDEN...
HAMPSHIRE...EASTERN FRANKLIN...NORTHWESTERN WORCESTER AND SOUTHERN
CHESHIRE COUNTIES WILL EXPIRE AT 745 PM EDT...
THE SEVERE THUNDERSTORM WILL BE ALLOWED TO EXPIRE AT 745 PM...AS THE
STORM HAS WEAKENED. HOWEVER...HEAVY RAIN...GUSTY WINDS AND
DANGEROUS CLOUD TO GROUND LIGHTNING REMAIN POSSIBLE WITH THIS STORM.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY EVENING FOR NORTHERN CONNECTICUT AND WESTERN MASSACHUSETTS
AND SOUTHERN NEW HAMPSHIRE.
LAT...LON 4216 7303 4227 7301 4251 7264 4270 7243
4273 7247 4276 7252 4276 7242 4281 7236
4292 7200 4279 7198 4209 7235 4211 7308
4214 7308
TIME...MOT...LOC 2340Z 270DEG 28KT 4271 7188 4216 7234
$$
FRANKThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 3:04 PM EDT | Special Weather Statement | BOX | Cheshire | 41 min |
| May 29, 3:16 PM EDT | Special Weather Statement | BOX | Cheshire | 44 min |
| May 29, 3:19 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire | 41 min |
| May 29, 3:30 PM EDT | Tornado Warning | BOX | Cheshire | 45 min |
| May 29, 3:42 PM EDT | Special Weather Statement | BOX | Cheshire | 48 min |
| May 29, 3:51 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire, Hillsborough | 54 min |
| May 29, 4:24 PM EDT | Areal Flood Advisory | BOX | Cheshire, Hillsborough | 3 hr |
| May 29, 4:37 PM EDT | Tornado Warning | BOX | Cheshire | 38 min |
| May 29, 4:45 PM EDT | Flash Flood Warning | BOX | Cheshire | 3 hr |
| May 29, 5:09 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire, Hillsborough | 66 min |
| May 29, 6:13 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire, Hillsborough | 62 min |
| May 29, 7:09 PM EDT | Severe Thunderstorm Warning | BOX | Cheshire, Hillsborough | 25 min |
| May 29, 7:32 PM EDT | Areal Flood Advisory | BOX | Hillsborough | 3 hr |
| May 29, 7:44 PM EDT | Areal Flood Warning | BOX | Cheshire | 6 hr |
| May 29, 3:59 AM EDT | Small Craft Advisory for Hazardous Seas | BOX | 36 hr | |
| May 29, 6:30 AM EDT | Dense Fog Advisory | BOX | Barnstable, Bristol, Dukes, Essex, Nantucket, Norfolk and 2 more | 4 hr |
| May 29, 5:59 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire | 61 min |
| May 29, 6:34 PM EDT | Special Weather Statement | BOX | Franklin, Hampden, Hampshire | 56 min |
| May 29, 7:49 PM EDT | Special Weather Statement | BOX | Franklin, Hampden, Hampshire | 56 min |
| May 29, 7:57 PM EDT | Special Weather Statement | BOX | Franklin, Hampden, Hampshire | 63 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.