Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 114, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Sep 18, 2012, 9:16 PM EDT for Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut; 5 counties in Massachusetts. It was in force for 59 min. 4 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 18, 2012, 9:16 PM EDT (01:16 UTC)
- Expired
- Sep 18, 2012, 10:15 PM EDT
- In force
- 59 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA
The radar
The Brookhaven radar (KOKX), 105 km from the middle of the area, began a volume at 01:16 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 18, 9:47 PM EDT | NON-TSTM WND DMG | Royalston, MA | POWER LINES DOWN ON RTE 32 |
| Sep 18, 9:51 PM EDT | TSTM WND DMG | Enfield, CT | MULTIPLE TREES DOWN ON HILL AND SILVER STREET |
| Sep 18, 9:59 PM EDT | TSTM WND DMG | Manchester, CT | TREES AND WIRES DOWN ON OAK ST AND PARK ST. TREE DOWN ON A HOUSE ON SCARBOROUGH ST - NO DAMAGE TO HOME. |
| Sep 18, 10:09 PM EDT | TSTM WND DMG | Glastonbury, CT | TREE DOWN ON HEBRON AVE |
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 18, 7:54 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 1.3 hours before the alert went out and 105 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
- 270 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 629 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 667 m²/s²
- 0-3 km storm-relative helicity
- 699 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 4.2
The text
As transmitted, in the capitals the NWS used until 2016.
097
WUUS51 KBOX 190116
SVRBOX
CTC003-013-015-MAC011-013-015-017-027-190215-
/O.NEW.KBOX.SV.W.0114.120919T0116Z-120919T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
916 PM EDT TUE SEP 18 2012
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WESTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
HARTFORD COUNTY IN NORTHERN CONNECTICUT...
THIS INCLUDES THE CITIES OF...WINDSOR LOCKS...WEST HARTFORD...
NEWINGTON...NEW BRITAIN...MANCHESTER...HARTFORD...EAST HARTFORD...
BRISTOL...
TOLLAND COUNTY IN NORTHERN CONNECTICUT...
THIS INCLUDES THE CITIES OF...VERNON...MANSFIELD...
WEST CENTRAL WINDHAM COUNTY IN NORTHERN CONNECTICUT...
EXTREME NORTHWESTERN MIDDLESEX COUNTY IN SOUTHEAST MASSACHUSETTS...
EASTERN FRANKLIN COUNTY IN WESTERN MASSACHUSETTS...
THIS INCLUDES THE CITY OF GREENFIELD...
HAMPDEN COUNTY IN WESTERN MASSACHUSETTS...
THIS INCLUDES THE CITIES OF...SPRINGFIELD...CHICOPEE...
EASTERN HAMPSHIRE COUNTY IN WESTERN MASSACHUSETTS...
THIS INCLUDES THE CITIES OF...NORTHAMPTON...AMHERST...
* UNTIL 1015 PM EDT
* AT 912 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM GREENFIELD TO 14 MILES SOUTH OF SOUTHINGTON TO 111 MILES
SOUTHWEST OF SOUTHINGTON...OR ALONG A LINE EXTENDING FROM
GREENFIELD TO 7 MILES NORTH OF NEW HAVEN TO 84 MILES SOUTHWEST OF
MILFORD...AND WAS MOVING NORTHEAST AT 55 MPH.
* SOME LOCATIONS IN THE WARNING INCLUDE...
SPRINGFIELD...HARTFORD...NORTHAMPTON...HUBBARDSTON...PALMER.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...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 300 AM EDT
WEDNESDAY MORNING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND
SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND.
&&
LAT...LON 4192 7291 4197 7291 4272 7263 4269 7185
4213 7205 4170 7224 4164 7233 4160 7232
4158 7247 4164 7251 4162 7271 4157 7276
4155 7282 4156 7284 4154 7285 4155 7294
4164 7294 4164 7299 4172 7301
TIME...MOT...LOC 0114Z 221DEG 46KT 4259 7254 4142 7294
4020 7384
$$
WTB1 follow-up statement
955
WWUS51 KBOX 190149
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
949 PM EDT TUE SEP 18 2012
CTC003-013-015-MAC011-013-015-017-027-190215-
/O.CON.KBOX.SV.W.0114.000000T0000Z-120919T0215Z/
HARTFORD CT-TOLLAND CT-WINDHAM CT-MIDDLESEX MA-WORCESTER MA-
FRANKLIN MA-HAMPSHIRE MA-HAMPDEN MA-
949 PM EDT TUE SEP 18 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT
FOR HAMPDEN...EASTERN HAMPSHIRE...EASTERN FRANKLIN...WESTERN
WORCESTER...EXTREME NORTHWESTERN MIDDLESEX...NORTHWESTERN WINDHAM...
TOLLAND AND HARTFORD COUNTIES...
AT 942 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SHOWERS AND THUNDERSTORMS CAPABLE OF PRODUCING
DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG
A LINE EXTENDING FROM KEENE THROUGH NORTHAMPTON TO HARTFORD ...AND
WERE MOVING NORTHEAST AT 50 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HARTFORD...STORRS...SPRINGFIELD...PALMER...ATHOL...GARDNER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 AM EDT
WEDNESDAY MORNING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND
SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND.
&&
LAT...LON 4192 7291 4197 7291 4272 7263 4269 7185
4213 7205 4170 7224 4164 7233 4160 7232
4158 7247 4164 7251 4162 7271 4157 7276
4155 7282 4156 7284 4154 7285 4155 7294
4164 7294 4164 7299 4172 7301
TIME...MOT...LOC 0146Z 221DEG 46KT 4289 7216 4173 7258
4051 7350
$$
WTBThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 8:18 PM EDT | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 57 min |
| Sep 18, 8:52 PM EDT | Areal Flood Advisory | BOX | Capitol Planning Region, Northeastern Connecticut Planning Region | 5 hr |
| Sep 18, 10:16 PM EDT | Severe Thunderstorm Warning | BOX | Capitol Planning Region, Northeastern Connecticut Planning Region | 59 min |
| Sep 18, 10:34 PM EDT | Special Weather Statement | BOX | 86 min | |
| Sep 18, 11:16 PM EDT | Severe Thunderstorm Warning | BOX | Northeastern Connecticut Planning Region | 59 min |
| Sep 18, 11:27 PM EDT | Areal Flood Advisory | BOX | Northeastern Connecticut Planning Region | 6 hr |
| Sep 19, 12:27 AM EDT | Areal Flood Warning | BOX | Hampshire | 80 min |
| Sep 19, 12:37 AM EDT | Special Marine Warning | BOX | 83 min | |
| Sep 19, 12:49 AM EDT | Special Weather Statement | BOX | Norfolk, Suffolk | 56 min |
| Sep 19, 1:01 AM EDT | Special Marine Warning | BOX | 59 min | |
| Sep 19, 1:35 AM EDT | Special Marine Warning | BOX | 85 min | |
| Sep 19, 1:59 AM EDT | Special Marine Warning | BOX | 61 min | |
| Sep 19, 2:18 AM EDT | Special Weather Statement | BOX | Barnstable, Bristol, Plymouth | 87 min |
| Sep 19, 4:07 AM EDT | High Surf Advisory | BOX | Dukes, Nantucket | 12 hr |
| Sep 19, 5:50 AM EDT | Small Craft Advisory | BOX | 22 hr |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 2012Severe Thunderstorm Warnings in Connecticut, 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.