Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 101, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 10, 2011, 7:04 PM EDT for Bristol County, Norfolk County, Worcester County, Massachusetts; Providence County, Rhode Island. It was in force for 41 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
- Aug 10, 2011, 7:04 PM EDT (23:04 UTC)
- Expired
- Aug 10, 2011, 7:45 PM EDT
- In force
- 41 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), 16 km from the middle of the area, began a volume at 23:03 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 |
|---|---|---|---|
| Aug 10, 7:17 PM EDT | TSTM WND DMG | Cumberland, RI | TREES AND WIRES DOWN ON WRENTHAM ROAD |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Chatham, MA (KCHH), launched 12:00Z, 11.1 hours before the alert went out and 118 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
- 613 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 724 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
274 WUUS51 KBOX 102304 SVRBOX MAC005-021-027-RIC007-102345- /O.NEW.KBOX.SV.W.0101.110810T2304Z-110810T2345Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAUNTON MA 704 PM EDT WED AUG 10 2011 THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN PROVIDENCE COUNTY IN RHODE ISLAND... THIS INCLUDES THE CITY OF WOONSOCKET... SOUTHEASTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS... SOUTHWESTERN NORFOLK COUNTY IN EASTERN MASSACHUSETTS... THIS INCLUDES THE CITY OF FRANKLIN... NORTHWESTERN BRISTOL COUNTY IN SOUTHEAST MASSACHUSETTS... THIS INCLUDES THE CITIES OF...NORTH ATTLEBOROUGH...ATTLEBOROUGH... * UNTIL 745 PM EDT * AT 659 PM EDT...NATIONAL WEATHER SERVICE 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 WAS MOVING EAST AT 25 MPH. * SOME LOCATIONS IN THE WARNING INCLUDE...CUMBERLAND...WRENTHAM... PLAINVILLE...FOXBOROUGH...MANSFIELD AND NORTON. 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. && LAT...LON 4208 7114 4183 7111 4196 7160 4210 7158 TIME...MOT...LOC 2304Z 279DEG 24KT 4200 7150 $$ DOODY
1 follow-up statement
080 WWUS51 KBOX 102319 SVSBOX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TAUNTON MA 719 PM EDT WED AUG 10 2011 MAC027-102329- /O.CAN.KBOX.SV.W.0101.000000T0000Z-110810T2345Z/ WORCESTER MA- 719 PM EDT WED AUG 10 2011 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WORCESTER COUNTY IS CANCELLED... LAT...LON 4208 7145 4208 7114 4183 7111 4192 7147 TIME...MOT...LOC 2319Z 279DEG 24KT 4198 7137 $$ MAC005-021-RIC007-102345- /O.CON.KBOX.SV.W.0101.000000T0000Z-110810T2345Z/ NORFOLK MA-PROVIDENCE RI-BRISTOL MA- 719 PM EDT WED AUG 10 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT FOR SOUTHWESTERN NORFOLK COUNTY IN EASTERN MASSACHUSETTS...AND NORTHWESTERN BRISTOL COUNTY IN SOUTHEAST MASSACHUSETTS...AND NORTHEASTERN PROVIDENCE COUNTY IN RHODE ISLAND... AT 717 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR PLAINVILLE...OR NEAR NORTH ATTLEBOROUGH...MOVING EAST AT 30 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WRENTHAM...ATTLEBOROUGH...FOXBOROUGH...MANSFIELD AND NORTON PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS! && LAT...LON 4208 7145 4208 7114 4183 7111 4192 7147 TIME...MOT...LOC 2319Z 279DEG 24KT 4198 7137 $$ DOODY
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 12:05 AM EDT | Special Marine Warning | BOX | 40 min | |
| Aug 10, 12:38 AM EDT | Special Marine Warning | BOX | 52 min | |
| Aug 10, 12:47 AM EDT | Areal Flood Advisory | BOX | Essex, Middlesex, Norfolk, Suffolk | 2 hr |
| Aug 10, 3:49 AM EDT | Small Craft Advisory for Hazardous Seas | BOX | 23 hr | |
| Aug 10, 3:53 AM EDT | Areal Flood Warning | BOX | Middlesex | 99 min |
| Aug 10, 3:19 PM EDT | Special Weather Statement | BOX | Hampshire | 56 min |
| Aug 10, 4:22 PM EDT | Special Weather Statement | BOX | Worcester | 53 min |
| Aug 10, 5:28 PM EDT | Special Weather Statement | BOX | Worcester | 47 min |
| Aug 10, 6:13 PM EDT | Special Weather Statement | BOX | Norfolk | 62 min |
| Aug 10, 7:39 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Norfolk, Plymouth | 51 min |
| Aug 10, 6:42 PM EDT | Special Weather Statement | BOX | Providence | 63 min |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 2011Severe Thunderstorm Warnings in Rhode Island, 2011Every severe thunderstorm warning in 2011
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.