Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 8, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at May 19, 2017, 12:04 AM EDT for 4 counties in Massachusetts; Providence County, Rhode Island; Northeastern Connecticut Planning Region, Connecticut. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 19, 2017, 12:04 AM EDT (04:04 UTC)
- Expired
- May 19, 2017, 12:31 AM EDT
- In force
- 27 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Northeastern Connecticut Planning Region, CT, Middlesex County, MA, Norfolk County, MA, Suffolk County, MA, Worcester County, MA, Providence County, RI
The radar
The Boston radar (KBOX), 37 km from the middle of the area, began a volume at 04:04 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.
The nearest sounding before it
Chatham, MA (KCHH), launched 00:00Z, 4.1 hours before the alert went out and 138 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2123 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
807
WUUS51 KBOX 190404
SVRBOX
CTC015-MAC017-021-025-027-RIC007-190445-
/O.NEW.KBOX.SV.W.0008.170519T0404Z-170519T0445Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Taunton MA
1204 AM EDT FRI MAY 19 2017
The National Weather Service in Taunton has issued a
* Severe Thunderstorm Warning for...
Windham County in northern Connecticut...
Southeastern Worcester County in central Massachusetts...
Norfolk County in eastern Massachusetts...
Suffolk County in eastern Massachusetts...
Middlesex County in northeastern Massachusetts...
Providence County in Rhode Island...
* Until 1245 AM EDT
* At 1204 AM EDT, severe thunderstorms were located along a line
extending from Clinton to near Douglas to near Ashford, moving east
at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Boston, Worcester, Cambridge, Quincy, Newton, Somerville,
Pawtucket, Framingham, Waltham, Malden, Brookline, Medford, Revere,
Arlington, Everett, Woonsocket, Leominster, Billerica, Marlborough
and Woburn.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4258 7103 4257 7106 4253 7107 4252 7104
4247 7105 4243 7100 4209 7109 4199 7138
4190 7138 4173 7164 4172 7179 4164 7179
4175 7216 4183 7216 4184 7222 4189 7222
4207 7185 4250 7174
TIME...MOT...LOC 0404Z 264DEG 37KT 4242 7169 4208 7179 4187 7220
HAIL...<.75IN
WIND...60MPH
$$
LEC2 follow-up statements
431
WWUS51 KBOX 190426
SVSBOX
Severe Weather Statement
National Weather Service Taunton MA
1226 AM EDT FRI MAY 19 2017
MAC027-190435-
/O.CAN.KBOX.SV.W.0008.000000T0000Z-170519T0445Z/
Worcester MA-
1226 AM EDT FRI MAY 19 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WORCESTER COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4253 7107 4252 7104 4242 7100 4209 7109
4199 7137 4190 7138 4173 7164 4172 7179
4164 7179 4175 7216 4183 7216 4184 7221
4201 7173 4202 7150 4217 7148 4220 7151
4254 7138 4258 7103
TIME...MOT...LOC 0425Z 264DEG 37KT 4244 7140 4210 7151 4189 7192
$$
CTC015-MAC017-021-025-RIC007-190445-
/O.CON.KBOX.SV.W.0008.000000T0000Z-170519T0445Z/
Windham CT-Norfolk MA-Suffolk MA-Middlesex MA-Providence RI-
1226 AM EDT FRI MAY 19 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT
FOR WINDHAM...NORFOLK...SUFFOLK...SOUTHEASTERN MIDDLESEX AND
PROVIDENCE COUNTIES...
At 1225 AM EDT, severe thunderstorms were located along a line
extending from near Concord to near Mendon to near Putnam, moving
east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Boston, Cambridge, Quincy, Newton, Somerville, Pawtucket, Framingham,
Waltham, Malden, Brookline, Medford, Revere, Arlington, Everett,
Woonsocket, Billerica, Woburn, Chelsea, Coventry and Cumberland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4253 7107 4252 7104 4242 7100 4209 7109
4199 7137 4190 7138 4173 7164 4172 7179
4164 7179 4175 7216 4183 7216 4184 7221
4201 7173 4202 7150 4217 7148 4220 7151
4254 7138 4258 7103
TIME...MOT...LOC 0425Z 264DEG 37KT 4244 7140 4210 7151 4189 7192
HAIL...<.75IN
WIND...60MPH
$$
Sipprell573
WWUS51 KBOX 190431
SVSBOX
Severe Weather Statement
National Weather Service Taunton MA
1231 AM EDT FRI MAY 19 2017
CTC015-MAC017-021-025-RIC007-190441-
/O.CAN.KBOX.SV.W.0008.000000T0000Z-170519T0445Z/
Windham CT-Norfolk MA-Suffolk MA-Middlesex MA-Providence RI-
1231 AM EDT FRI MAY 19 2017
...THE SEVERE THUNDERSTORM WARNING FOR WINDHAM...NORFOLK...SUFFOLK...
SOUTHEASTERN MIDDLESEX AND PROVIDENCE COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened. Therefore, the
warning has been cancelled.
LAT...LON 4253 7107 4252 7104 4242 7100 4209 7109
4199 7137 4190 7138 4173 7164 4172 7179
4164 7179 4175 7216 4183 7216 4184 7221
4201 7173 4202 7150 4217 7148 4220 7151
4254 7138 4258 7103
TIME...MOT...LOC 0429Z 264DEG 37KT 4244 7134 4210 7146 4189 7187
$$
SipprellThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 8:36 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire | 39 min |
| May 18, 9:05 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 55 min |
| May 18, 9:43 PM EDT | Severe Thunderstorm Warning | BOX | Essex, Middlesex, Worcester | 62 min |
| May 18, 10:14 PM EDT | Special Weather Statement | BOX | Hampshire, Middlesex, Worcester | 61 min |
| May 18, 10:20 PM EDT | Special Marine Warning | BOX | 55 min | |
| May 18, 10:41 PM EDT | Special Weather Statement | BOX | Essex, Norfolk, Suffolk | 49 min |
| May 18, 11:45 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex, Worcester | 30 min |
| May 19, 12:08 AM EDT | Special Marine Warning | BOX | 97 min | |
| May 18, 11:50 PM EDT | Severe Thunderstorm Warning | BOX | Providence | 25 min |
| May 19, 1:34 AM EDT | Special Weather Statement | BOX | Providence | 26 min |
| May 18, 11:28 PM EDT | Special Weather Statement | BOX | 32 min | |
| May 18, 11:39 PM EDT | Special Weather Statement | BOX | 36 min | |
| May 19, 12:17 AM EDT | Severe Thunderstorm Warning | BOX | Capitol Planning Region, Northeastern Connecticut Planning Region | 28 min |
| May 19, 12:27 AM EDT | Special Weather Statement | BOX | 33 min | |
| May 19, 12:41 AM EDT | Special Weather Statement | BOX | 34 min | |
| May 19, 12:51 AM EDT | Special Weather Statement | BOX | 39 min |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 2017Severe Thunderstorm Warnings in Rhode Island, 2017Severe Thunderstorm Warnings in Connecticut, 2017Every severe thunderstorm warning in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.