Alert archive / Massachusetts / Severe Thunderstorm Warnings in 2010
Severe Thunderstorm Warning 13, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at May 26, 2010, 10:34 PM EDT for Middlesex County, Worcester County, Massachusetts. It was in force for 36 min. 4 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
- May 26, 2010, 10:34 PM EDT (02:34 UTC)
- Expired
- May 26, 2010, 11:10 PM EDT
- In force
- 36 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
Counties Middlesex County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 56 km from the middle of the area, began a volume at 02:36 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 |
|---|---|---|---|
| May 26, 10:42 PM EDT | HAIL 1 | Shrewsbury, MA | |
| May 26, 10:47 PM EDT | HAIL 1 | Grafton, MA | 1047-1051P 4 MIN OF QUARTER SIZE HAIL IN NORTH GRAFTON. |
| May 26, 10:50 PM EDT | HAIL 0.75 | Grafton, MA | NORTH GRAFTON |
| May 26, 10:54 PM EDT | HAIL 1 | Sutton, MA | 1 INCH HAIL COVERING RT 146. |
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 |
|---|---|---|---|
| May 26, 10:23 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Chatham, MA (KCHH), launched 00:00Z, 2.6 hours before the alert went out and 157 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
- 497 J/kg
- Mixed-layer CIN
- -174 J/kg
- Mixed-layer LCL
- 1265 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- -43 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.3
The text
As transmitted, in the capitals the NWS used until 2016.
332 WUUS51 KBOX 270234 SVRBOX MAC017-027-270330- /O.NEW.KBOX.SV.W.0013.100527T0234Z-100527T0330Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAUNTON MA 1034 PM EDT WED MAY 26 2010 THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS... THIS INCLUDES THE CITY OF WORCESTER... SOUTHWESTERN MIDDLESEX COUNTY IN EASTERN MASSACHUSETTS... * UNTIL 1130 PM EDT * AT 1028 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 6 MILES NORTH OF WEST BOYLSTON TO WESTBOROUGH...OR ALONG A LINE EXTENDING FROM LEOMINSTER TO FRAMINGHAM...AND WAS MOVING SOUTH AT 35 MPH. * SOME LOCATIONS IN THE WARNING INCLUDE...SHREWSBURY...HOLDEN... UPTON...GRAFTON...NORTHBRIDGE...UXBRIDGE...WHITINSVILLE... LEICESTER...AUBURN...SUTTON...MILLBURY...DOUGLAS...OXFORD... CHARLTON...WEBSTER...STURBRIDGE...SOUTHBRIDGE AND DUDLEY. 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. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM EDT THURSDAY MORNING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND CENTRAL RHODE ISLAND. && LAT...LON 4230 7152 4201 7161 4203 7213 4246 7180 TIME...MOT...LOC 0234Z 017DEG 32KT 4240 7179 4224 7155 $$ EKSTER
2 follow-up statements
125 WWUS51 KBOX 270255 SVSBOX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TAUNTON MA 1055 PM EDT WED MAY 26 2010 MAC017-027-270330- /O.CON.KBOX.SV.W.0013.000000T0000Z-100527T0330Z/ MIDDLESEX MA-WORCESTER MA- 1055 PM EDT WED MAY 26 2010 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT FOR SOUTHEASTERN WORCESTER AND SOUTHWESTERN MIDDLESEX COUNTIES... AT 1049 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR GRAFTON...OR 6 MILES SOUTHEAST OF WORCESTER...MOVING SOUTH AT 35 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SUTTON...WHITINSVILLE...UXBRIDGE...MILLBURY...OXFORD...DOUGLAS... WEBSTER AND DUDLEY PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM EDT THURSDAY MORNING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND CENTRAL RHODE ISLAND. && LAT...LON 4226 7154 4201 7161 4204 7198 4230 7184 TIME...MOT...LOC 0255Z 017DEG 32KT 4216 7175 $$ EKSTER
333 WWUS51 KBOX 270310 RRA SVSBOX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TAUNTON MA 1110 PM EDT WED MAY 26 2010 MAC017-027-270321- /O.CAN.KBOX.SV.W.0013.000000T0000Z-100527T0330Z/ MIDDLESEX MA-WORCESTER MA- 1110 PM EDT WED MAY 26 2010 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WORCESTER AND SOUTHWESTERN MIDDLESEX COUNTIES IS CANCELLED... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM EDT THURSDAY MORNING FOR SOUTHERN NEW HAMPSHIRE. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 400 AM EDT THURSDAY MORNING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND CENTRAL RHODE ISLAND. LAT...LON 4226 7154 4201 7161 4204 7198 4230 7184 TIME...MOT...LOC 0311Z 017DEG 32KT 4202 7181 $$ MLE
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 8:56 PM EDT | Special Weather Statement | BOX | Plymouth | 34 min |
| May 26, 9:29 PM EDT | Special Weather Statement | BOX | Bristol | 46 min |
| May 26, 9:33 PM EDT | Severe Thunderstorm Warning | BOX | Bristol, Plymouth | 28 min |
| May 26, 9:53 PM EDT | Special Weather Statement | BOX | Middlesex, Worcester | 52 min |
| May 26, 10:06 PM EDT | Small Craft Advisory | BOX | 4 hr | |
| May 26, 10:19 PM EDT | Severe Thunderstorm Warning | BOX | Hampden | 56 min |
| May 26, 10:52 PM EDT | Special Weather Statement | BOX | Franklin | 53 min |
| May 26, 11:06 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 29 min |
| May 26, 11:14 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampshire, Worcester | 36 min |
| May 26, 11:27 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire | 23 min |
| May 26, 11:33 PM EDT | Special Weather Statement | BOX | Middlesex | 57 min |
| May 26, 11:39 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire, Worcester | 66 min |
| May 26, 11:57 PM EDT | Severe Thunderstorm Warning | BOX | Hampden | 63 min |
| May 27, 1:03 AM EDT | Special Marine Warning | BOX | 87 min |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 2010Every severe thunderstorm warning in 2010
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.