Severe Thunderstorm Warning 112, NWS Boston/Norton, MA

Issued

Aug 19, 2011, 3:57 PM EDT (19:57 UTC)

Expired

Aug 19, 2011, 4:20 PM EDT

In force

23 min

Issued by

NWS Boston/Norton, MA

Area

Storm-based polygon

Counties Essex County, MA, Middlesex County, MA, Hillsborough County, NH

The Boston radar (KBOX), 79 km from the middle of the area, began a volume at 20:00 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

246 
WUUS51 KBOX 191957
SVRBOX
MAC009-017-NHC011-192045-
/O.NEW.KBOX.SV.W.0112.110819T1957Z-110819T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
357 PM EDT FRI AUG 19 2011

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL ESSEX COUNTY IN EASTERN MASSACHUSETTS...
  THIS INCLUDES THE CITY OF LAWRENCE...
  NORTH CENTRAL MIDDLESEX COUNTY IN SOUTHEAST MASSACHUSETTS...
  THIS INCLUDES THE CITY OF LOWELL...
  SOUTHEASTERN HILLSBOROUGH COUNTY IN SOUTHERN NEW HAMPSHIRE...
  THIS INCLUDES THE CITY OF NASHUA...

* UNTIL 445 PM EDT

* AT 356 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 CHELMSFORD TO LITTLETON...OR
  ALONG A LINE EXTENDING FROM LOWELL TO 10 MILES SOUTHWEST OF LOWELL
  TO 13 MILES NORTH OF FRAMINGHAM...AND WAS MOVING NORTHEAST AT 20
  MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...TEWKSBURY...WESTFORD...
  DRACUT...METHUEN...DUNSTABLE...PELHAM AND TYNGSBORO.

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 4274 7110 4252 7127 4253 7153 4276 7150
TIME...MOT...LOC 1957Z 207DEG 15KT 4258 7133 4251 7143
          4248 7151

$$

SIPPRELL

471 
WWUS51 KBOX 192012
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
412 PM EDT FRI AUG 19 2011

MAC009-017-NHC011-192045-
/O.CON.KBOX.SV.W.0112.000000T0000Z-110819T2045Z/
MIDDLESEX MA-HILLSBOROUGH NH-ESSEX MA-
412 PM EDT FRI AUG 19 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR WEST CENTRAL ESSEX...EXTREME SOUTHEASTERN HILLSBOROUGH AND NORTH
CENTRAL MIDDLESEX COUNTIES...

AT 408 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 LOWELL TO WESTFORD...OR
ALONG A LINE EXTENDING FROM LOWELL TO 7 MILES SOUTHWEST OF LOWELL TO
12 MILES SOUTHWEST OF LOWELL...MOVING NORTHEAST AT 15 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
CHELMSFORD...DRACUT...LAWRENCE...METHUEN AND PELHAM

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 4253 7146 4275 7137 4274 7110 4252 7127
TIME...MOT...LOC 2012Z 207DEG 15KT 4264 7129 4257 7139
          4254 7147

$$

SIPPRELL

921 
WWUS51 KBOX 192020
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
420 PM EDT FRI AUG 19 2011

MAC009-017-NHC011-192028-
/O.CAN.KBOX.SV.W.0112.000000T0000Z-110819T2045Z/
MIDDLESEX MA-HILLSBOROUGH NH-ESSEX MA-
420 PM EDT FRI AUG 19 2011

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL ESSEX...EXTREME
SOUTHEASTERN HILLSBOROUGH AND NORTH CENTRAL MIDDLESEX COUNTIES IS
CANCELLED...

THE STORM HAS WEAKENED ACROSS THE WARNED AREA. HEAVY RAINS AND 
INFREQUENT LIGHTNING CAN STILL BE ANTICIPATED WITH THIS STORM OVER 
THE NEXT HALF HOUR. 

LAT...LON 4253 7146 4275 7137 4274 7110 4252 7127
TIME...MOT...LOC 2018Z 207DEG 15KT 4266 7127 4259 7137
          4256 7145

$$

SIPPRELL

Severe Thunderstorm Warnings in Massachusetts, 2011Severe Thunderstorm Warnings in New Hampshire, 2011Every severe thunderstorm warning in 2011

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.