Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 43, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 4, 2012, 8:28 PM EDT for Essex County, Massachusetts. It was in force for 47 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 4, 2012, 8:28 PM EDT (00:28 UTC)
- Expired
- Jul 4, 2012, 9:15 PM EDT
- In force
- 47 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
County Essex County, MA
The radar
The Boston radar (KBOX), 86 km from the middle of the area, began a volume at 00:30 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 4, 8:55 PM EDT | TSTM WND DMG | Methuen, MA | TREE AND WIRES DOWN ON MADISON STREET |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Gray, ME (KGYX), launched 00:00Z, 0.5 hours before the alert went out and 147 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
- 1525 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 811 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.6
The text
As transmitted, in the capitals the NWS used until 2016.
869
WUUS51 KBOX 050028
SVRBOX
MAC009-050115-
/O.NEW.KBOX.SV.W.0043.120705T0028Z-120705T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
828 PM EDT WED JUL 4 2012
THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN ESSEX COUNTY IN EASTERN MASSACHUSETTS...
* UNTIL 915 PM EDT
* AT 825 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS
STORM WAS LOCATED NEAR SALEM...OR 5 MILES EAST OF DERRY...AND
MOVING SOUTHEAST AT 25 MPH.
* LOCATIONS IMPACTED INCLUDE...
LAWRENCE...NORTH ANDOVER...METHUEN AND ANDOVER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR
PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 4265 7101 4262 7116 4274 7121 4274 7118
4280 7118 4281 7116 4282 7113
TIME...MOT...LOC 0025Z 337DEG 20KT 4287 7122
$$
VALLIER-TALBOT2 follow-up statements
300
WWUS51 KBOX 050045
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
845 PM EDT WED JUL 4 2012
MAC009-050115-
/O.CON.KBOX.SV.W.0043.000000T0000Z-120705T0115Z/
ESSEX MA-
845 PM EDT WED JUL 4 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM
EDT FOR NORTHWESTERN ESSEX COUNTY...
AT 842 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH. THIS STORM WAS LOCATED NEAR SALEM...MOVING SOUTHEAST AT 25
MPH.
LOCATIONS IMPACTED INCLUDE...
LAWRENCE...NORTH ANDOVER...METHUEN AND ANDOVER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MILES
PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY
RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO
DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
&&
LAT...LON 4265 7101 4262 7116 4274 7121 4274 7118
4280 7118 4281 7116 4282 7113
TIME...MOT...LOC 0042Z 337DEG 20KT 4278 7117
$$
VALLIER-TALBOT146
WWUS51 KBOX 050113
SVSBOX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
913 PM EDT WED JUL 4 2012
MAC009-050122-
/O.EXP.KBOX.SV.W.0043.000000T0000Z-120705T0115Z/
ESSEX MA-
913 PM EDT WED JUL 4 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ESSEX COUNTY
WILL EXPIRE AT 915 PM EDT...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER
SERVICE TAUNTON.
LAT...LON 4265 7101 4262 7116 4274 7121 4274 7118
4280 7118 4281 7116 4282 7113
TIME...MOT...LOC 0112Z 337DEG 20KT 4278 7117
$$
VALLIER-TALBOTThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 8:14 PM EDT | Special Weather Statement | BOX | Essex | 46 min |
| Jul 4, 9:18 PM EDT | Special Weather Statement | BOX | Suffolk | 42 min |
| Jul 4, 11:07 PM EDT | Special Weather Statement | BOX | Franklin | 53 min |
| Jul 5, 3:04 AM EDT | Special Marine Warning | BOX | 26 min | |
| Jul 5, 3:24 AM EDT | Special Marine Warning | BOX | 36 min |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 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.