Alert archive / Massachusetts / Tornado Warnings in 2011
Tornado Warning 12, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this tornado warning at Jul 26, 2011, 4:51 PM EDT for Hampden County, Worcester County, Massachusetts; Northeastern Connecticut Planning Region, Connecticut. It was in force for 39 min. 2 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 26, 2011, 4:51 PM EDT (20:51 UTC)
- Expired
- Jul 26, 2011, 5:30 PM EDT
- In force
- 39 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
Counties Northeastern Connecticut Planning Region, CT, Hampden County, MA, Worcester County, MA
The radar
The Boston radar (KBOX), 86 km from the middle of the area, began a volume at 20:53 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 26, 4:55 PM EDT | TSTM WND DMG | Monson, MA | MANY TREES DOWN INCLUDING SOME INTO HOUSES ON WOBURN ROAD AND MAIN STREET. WIRES DOWN ON BOSTON ROAD. |
| Jul 26, 4:55 PM EDT | HAIL 1.25 | Monson, MA | QUARTER TO HALF DOLLAR SIZED HAIL |
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 26, 2:30 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 8.9 hours before the alert went out and 144 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
- 76 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 509 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
705 WFUS51 KBOX 262051 TORBOX CTC013-015-MAC013-027-262130- /O.NEW.KBOX.TO.W.0012.110726T2051Z-110726T2130Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TAUNTON MA 451 PM EDT TUE JUL 26 2011 THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A * TORNADO WARNING FOR... SOUTH CENTRAL WORCESTER COUNTY IN CENTRAL MASSACHUSETTS... NORTHEASTERN TOLLAND COUNTY IN NORTHERN CONNECTICUT... NORTHWESTERN WINDHAM COUNTY IN NORTHERN CONNECTICUT... SOUTHEASTERN HAMPDEN COUNTY IN WESTERN MASSACHUSETTS... * UNTIL 530 PM EDT * AT 449 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR HAMPDEN... OR 9 MILES EAST OF SPRINGFIELD...MOVING EAST AT 30 MPH. * SOME LOCATIONS IN THE WARNING INCLUDE...MONSON...STAFFORD... BRIMFIELD...WALES...HOLLAND...UNION...STURBRIDGE...SOUTHBRIDGE AND EASTFORD. WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS A TORNADO MAY ALREADY BE ON THE GROUND OR IS EXPECTED TO DEVELOP SHORTLY. TAKE COVER NOW! MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT TUESDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND. && LAT...LON 4209 7194 4188 7203 4204 7249 4215 7243 TIME...MOT...LOC 2051Z 288DEG 24KT 4208 7235 $$ NOCERA
1 follow-up statement
574 WWUS51 KBOX 262113 SVSBOX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TAUNTON MA 513 PM EDT TUE JUL 26 2011 MAC013-027-262123- /O.CAN.KBOX.TO.W.0012.000000T0000Z-110726T2130Z/ WORCESTER MA-HAMPDEN MA- 513 PM EDT TUE JUL 26 2011 ...THE TORNADO WARNING FOR SOUTHEASTERN HAMPDEN AND SOUTH CENTRAL WORCESTER COUNTIES IS CANCELLED... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT TUESDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND. LAT...LON 4202 7197 4188 7203 4198 7230 4203 7226 TIME...MOT...LOC 2113Z 297DEG 26KT 4198 7220 $$ CTC013-015-262130- /O.CON.KBOX.TO.W.0012.000000T0000Z-110726T2130Z/ TOLLAND CT-WINDHAM CT- 513 PM EDT TUE JUL 26 2011 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR NORTHWESTERN WINDHAM AND NORTHEASTERN TOLLAND COUNTIES... AT 510 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR STAFFORD...OR 11 MILES NORTH OF MANSFIELD...MOVING SOUTHEAST AT 30 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO UNION AND EASTFORD PRECAUTIONARY/PREPAREDNESS ACTIONS... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT TUESDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND. && LAT...LON 4202 7197 4188 7203 4198 7230 4203 7226 TIME...MOT...LOC 2113Z 297DEG 26KT 4198 7220 $$ NOCERA
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 3:13 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Hampden, Hampshire | 62 min |
| Jul 26, 4:09 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 66 min |
| Jul 26, 4:10 PM EDT | Special Weather Statement | BOX | Franklin | 65 min |
| Jul 26, 4:14 PM EDT | Areal Flood Advisory | BOX | Franklin, Hampden, Hampshire, Worcester | 99 min |
| Jul 26, 4:15 PM EDT | Severe Thunderstorm Warning | BOX | Hampden, Hampshire | 60 min |
| Jul 26, 4:28 PM EDT | Tornado Warning | BOX | Hampden, Hampshire | 47 min |
| Jul 26, 4:52 PM EDT | Severe Thunderstorm Warning | BOX | Hampden | 53 min |
| Jul 26, 4:59 PM EDT | Areal Flood Advisory | BOX | Hampden, Worcester | 98 min |
| Jul 26, 5:26 PM EDT | Areal Flood Advisory | BOX | Worcester | 106 min |
| Jul 26, 5:30 PM EDT | Severe Thunderstorm Warning | BOX | Norfolk, Worcester | 45 min |
| Jul 26, 6:22 PM EDT | Areal Flood Advisory | BOX | Bristol, Middlesex, Norfolk, Worcester | 53 min |
| Jul 26, 5:06 PM EDT | Severe Thunderstorm Warning | BOX | Northeastern Connecticut Planning Region | 39 min |
Nearby
Tornado Warnings in Massachusetts, 2011Tornado Warnings in Connecticut, 2011Every tornado warning in 2011Tornadoes 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.