Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 54, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 18, 2012, 3:09 PM EDT for Providence County, Rhode Island; Bristol County, Norfolk County, Worcester County, Massachusetts. It was in force for 51 min. 3 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
- Jul 18, 2012, 3:09 PM EDT (19:09 UTC)
- Expired
- Jul 18, 2012, 4:00 PM EDT
- In force
- 51 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
Counties Bristol County, MA, Norfolk County, MA, Worcester County, MA, Providence County, RI
The radar
The Boston radar (KBOX), 24 km from the middle of the area, began a volume at 19:12 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 18, 3:18 PM EDT | HAIL 0.88 | North Smithfield, RI | |
| Jul 18, 3:18 PM EDT | HAIL 2 | Cumberland, RI | |
| Jul 18, 3:43 PM EDT | HAIL 0.88 | Attleboro, MA |
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 |
|---|---|---|---|
| Jul 18, 12:20 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Chatham, MA (KCHH), launched 12:00Z, 7.2 hours before the alert went out and 125 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
- 1521 J/kg
- Mixed-layer CIN
- -208 J/kg
- Mixed-layer LCL
- 1597 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
135 WUUS51 KBOX 181909 SVRBOX MAC005-021-027-RIC007-182000- /O.NEW.KBOX.SV.W.0054.120718T1909Z-120718T2000Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAUNTON MA 309 PM EDT WED JUL 18 2012 THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN BRISTOL COUNTY IN SOUTHEAST MASSACHUSETTS... SOUTHWESTERN NORFOLK COUNTY IN EASTERN MASSACHUSETTS... NORTHEASTERN PROVIDENCE COUNTY IN RHODE ISLAND... EXTREME SOUTHEASTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS... * UNTIL 400 PM EDT * AT 308 PM EDT...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 WOONSOCKET...AND MOVING EAST AT 30 MPH. * LOCATIONS IMPACTED INCLUDE... WOONSOCKET...ATTLEBOROUGH...NORTH ATTLEBOROUGH...BLACKSTONE... MILLVILLE...NORTH SMITHFIELD...WRENTHAM...CENTRAL FALLS... PLAINVILLE...CUMBERLAND...LINCOLN...MANSFIELD... FOXBOROUGH AND NORTON. 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. DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM. WHILE NOT IMMEDIATELY LIKELY...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 4189 7165 4207 7163 4207 7112 4187 7111 TIME...MOT...LOC 1908Z 275DEG 24KT 4198 7155 $$ KJC
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 12:41 PM EDT | Heat Advisory | BOX | Kent, Providence | 6 hr |
| Jul 18, 2:24 PM EDT | Flash Flood Warning | BOX | Kent, Providence | 3 hr |
| Jul 18, 2:44 PM EDT | Severe Thunderstorm Warning | BOX | Providence | 61 min |
| Jul 18, 3:46 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Kent, Newport, Providence, Washington | 59 min |
| Jul 18, 4:57 PM EDT | Severe Thunderstorm Warning | BOX | Providence | 13 min |
| Jul 17, 8:23 PM EDT | Special Weather Statement | BOX | Essex | 67 min |
| Jul 18, 12:37 PM EDT | Special Weather Statement | BOX | Middlesex | 53 min |
| Jul 18, 12:54 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex | 66 min |
| Jul 18, 1:21 PM EDT | Special Marine Warning | BOX | 84 min | |
| Jul 18, 1:29 PM EDT | Flash Flood Warning | BOX | Essex, Middlesex | 98 min |
| Jul 18, 1:43 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex, Suffolk | 36 min |
| Jul 18, 1:45 PM EDT | Special Marine Warning | BOX | 60 min | |
| Jul 18, 1:50 PM EDT | Special Weather Statement | BOX | Hampden | 40 min |
| Jul 18, 2:04 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire, Worcester | 56 min |
| Jul 18, 2:04 PM EDT | Tornado Warning | BOX | Essex, Suffolk | 12 min |
| Jul 18, 2:21 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex, Suffolk | 39 min |
| Jul 18, 2:21 PM EDT | Severe Thunderstorm Warning | BOX | Hampden | 54 min |
| Jul 18, 2:30 PM EDT | Special Marine Warning | BOX | 90 min | |
| Jul 18, 2:39 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Middlesex, Norfolk, Plymouth, Suffolk, Worcester | 51 min |
| Jul 18, 4:04 PM EDT | Special Marine Warning | BOX | 56 min | |
| Jul 18, 4:25 PM EDT | Special Marine Warning | BOX | 80 min | |
| Jul 18, 4:42 PM EDT | Severe Thunderstorm Warning | BOX | Barnstable, Plymouth | 36 min |
| Jul 18, 5:08 PM EDT | Special Weather Statement | BOX | Norfolk, Suffolk | 52 min |
| Jul 18, 5:24 PM EDT | Flash Flood Warning | BOX | Middlesex, Norfolk, Suffolk | 78 min |
| Jul 18, 5:27 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Norfolk, Plymouth, Suffolk | 48 min |
| Jul 18, 5:30 PM EDT | Special Marine Warning | BOX | 54 min | |
| Jul 18, 6:08 PM EDT | Special Marine Warning | BOX | 67 min | |
| Jul 18, 6:27 PM EDT | Special Weather Statement | BOX | Essex | 33 min |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 2012Severe Thunderstorm Warnings in Rhode Island, 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.