Alert archive / Massachusetts / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 8, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 11, 1991, 6:58 PM EDT for Middlesex County, Massachusetts. It was in force for 42 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 11, 1991, 6:58 PM EDT (22:58 UTC)
- Expired
- Jun 11, 1991, 7:40 PM EDT
- In force
- 42 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Whole counties
County Middlesex County, MA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 11, 7:30 PM EDT | Thunderstorm Wind 50 | Middlesex, MA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Albany, NY (KALB), launched 12:00Z, 11.0 hours before the alert went out and 201 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
- 1454 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jun 11, 5:29 PM EDT, 1 hour 29 minutes before
MAZALL-112330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOSTON MA 525 PM EDT TUE JUN 11 1991 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM FOR MOST OF MASSACHUSETTS EXCEPT CAPE COD AND THE ISLANDS... THUNDERSTORMS SHOULD NOT EFFECT EASTERN MASSACHUSETTS UNTIL SOMETIME BETWEEN 7 AND 9 PM. AT 525 PM...RADAR INDICATED THE CLOSEST STORMS IN THE FAR WESTERN PORTION OF THE STATE AND A SEVERE THUNDERSTORM WARNING HAS BEEN ISSUED FOR BERKSHIRE COUNTY. DAMAGING WINDS HAVE OCCURRED IN THE HUDSON VALLEY OF EASTERN NEW YORK STATE. AT 455 PM... WINDS GUSTED TO 59 MPH AT THE ALBANY COUNTY AIRPORT. AT PORTLAND MAINE...A THUNDERSTORM PRODUCED A WIND GUST TO 49 MPH AT 522 PM. AGAIN...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM FOR VIRTUALLY ALL OF SOUTHERN NEW ENGLAND EXCEPT CAPE COD. THUNDERSTORMS SHOULD NOT ARRIVE IN EASTERN MASSACHUSETTS UNTIL SOMETIME BETWEEN 7 AND 9PM. THE NEXT STATEMENT SHOULD BE8 ISSUED AROUND 6PM. DRAG
Special weather statement, Jun 11, 5:39 PM EDT, 1 hour 19 minutes before
CTZALL-MAZ005-120000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARTFORD CT 538 PM EDT TUE JUN 11 1991 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR ALL OF CONNECTICUT AND WESTERN MASSACHUSETTS UNTIL 1000 PM EDT... A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM FOR ALL OF CONNECTICUT AND WESTERN MASSACHUSETTS. A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS WITH THE POTENTIAL OF PRODUCING STRONG DAMAGING WINDS... LARGE HAIL...TORRENTIAL RAINS AND DANGEROUS LIGHTNING. RADAR SHOWED AT 530 PM...A THUNDERSTORM ENTERING BERKSHIRE COUNTY IN MASSACHUSETTS JUST SOUTH OF GREAT BARRINGTON MOVING EAST AT 35 MPH. THEREFORE THE STORM SHOULD MOVE ALONG THE MASSACHUSETTS/CONNECTICUT BORDER DURING THE NEXT HOUR. AT THE PRESENT TIME NO SEVERE WEATHER IS ASSOCIATED WITH THIS STORM...HOWEVER A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR BERKSHIRE COUNTY AS A SEVERE THUNDERSTORM MOVES ACROSS NORTHERN BERKSHIRE COUNTY. PEOPLE IN NORTHERN LITCHFIELD COUNTY IN THE CANAAN - COLEBROOK AREA SHOULD KEEP AN EYE TO THE SKY FOR THREATENING WEATHER DURING THE NEXT HOUR OR SO. OTHER THUNDERSTORMS WERE CONTINUNG TO DEVELOP ACROSS EASTERN NEW YORK... OTHERWISE ONLY SHOWER ACTIVITY WAS OCCURING ACROSS WESTERN CONNECTICUT AT 530 PM. REMEMBER A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM FOR ALL OF CONNECTICUT AND WESTERN MASSACHUSETTS. LOOK OUT FOR THREATENING WEATHzER AND STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST ON THIS UNFOLDING WEATHER SITUATION. WHITTIER
Special weather statement, Jun 11, 5:44 PM EDT, 1 hour 14 minutes before
CTZALL-MAZ005-120000- SPECIAL WEATHER STATEMENT...CORRECTION PRGH 2 LINE 6 NATIONAL WEATHER SERVICE HARTFORD CT 538 PM EDT TUE JUN 11 1991 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR ALL OF CONNECTICUT AND WESTERN MASSACHUSETTS UNTIL 1000 PM EDT... A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM FOR ALL OF CONNECTICUT AND WESTERN MASSACHUSETTS. A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS WITH THE POTENTIAL OF PRODUCING STRONG DAMAGING WINDS... LARGE HAIL...TORRENTIAL RAINS AND DANGEROUS LIGHTNING. RADAR SHOWED AT 530 PM...A THUNDERSTORM ENTERING BERKSHIRE COUNTY IN MASSACHUSETTS JUST SOUTH OF GREAT BARRINGTON MOVING EAST AT 35 MPH. THEREFORE THE STORM SHOULD MOVE ALONG THE MASSACHUSETTS/CONNECTICUT BORDER DURING THE NEXT HOUR. AT THE PRESENT TIME NO SEVERE WEATHER IS ASSOCIATED WITH THIS STORM...HOWEVER A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR BERKSHIRE COUNTY UNTIL 630 PM AS A SEVERE THUNDERSTORM MOVES ACROSS NORTHERN BERKSHIRE COUNTY. PEOPLE IN NORTHERN LITCHFIELD COUNTY IN THE CANAAN - COLEBROOK AREA SHOULD KEEP AN EYE TO THE SKY FOR THREATENING WEATHER DURING THE NEXT HOUR OR SO. OTHER THUNDERSTORMS WERE CONTINUNG TO DEVELOP ACROSS EASTERN NEW YORK... OTHERWISE ONLY SHOWER ACTIVITY WAS OCCURING ACROSS WESTERN CONNECTICUT AT 530 PM. REMEMBER A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM FOR ALL OF CONNECTICUT AND WESTERN MASSACHUSETTS. LOOK OUT FOR THREATENING WEATHER AND STAY TUNED TO NOAA WEATHER RADIO FOR THE LATEST ON THIS UNFOLDING WEATHER SITUATION. WHITTIER
Special weather statement, Jun 11, 5:58 PM EDT, 1 hour before
MAZALL-112330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOSTON MA 555 PM EDT TUE JUN 11 1991 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM FOR MOST OF MASSACHUSETTS EXCEPT CAPE COD AND THE ISLANDS... THUNDERSTORMS SHOULD NOT EFFECT EASTERN MASSACHUSETTS UNTIL SOMETIME BETWEEN 7 AND 9 PM. AT 555 PM...RADAR INDICATED SHORT LINES OF SHOWERS AND THUNDERSTORMS FROM NEAR ATHOL IN NORTHWEST WORCESTER COUNTY OF CENTRAL MASSACHUSETTS THROUGH MUCH OF THE WEST THIRD OF THE STATE INTO NORTHWEST CONNECTICUT. STORMS WERE MOVING EAST AT ABOUT 35 MPH AND SHOULD MOVE INTO THE WORCESTER AREA AS WELL AS NORTHERN MIDDLESEX COUNTY NEAR LOWELL AND AYER BETWEEN 630 AND 730 PM. IF THE STORMS HOLD TOGETHER THEY WOULD CROSS THE BOSTON METRO AREA AND THE NORTH SHORE INCLUDING CAPE ANN...PEABODY AND NEWBURYPORT BETWEEN 715 AND 845 PM. DAMAGING WINDS HAVE OCCURRED LATE THIS AFTERNOON IN THE HUDSON VALLEY OF EASTERN NEW YORK STATE. AGAIN...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM FOR VIRTUALLY ALL OF SOUTHERN NEW ENGLAND EXCEPT CAPE COD. THE NEXT STATEMENT SHOULD BE ISSUED AROUND 655 PM. DRAG
Special weather statement, Jun 11, 6:12 PM EDT, 46 minutes before
RIZALL-112300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PROVIDENCE RI 612 PM EDT TUE JUN 11 1991 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR RHODE ISLAND UNTIL 10 PM... THUNDERSTORMS WERE LOCATED IN WESTERN CONNECTICUT AND WESTERN MASSACHUSETTS AT 6PM. THESE STORMS WERE MOVING EAST AT 35 MPH AND SHOULD MOVE INTO WESTERN RHODE ISLAND AROUND 730 PM IF THEY HOLD TOGETHER. DAMAGING WINDS AND DOWNED TREES WERE REPORTED IN THE HUDSON VALLEY LATE THIS AFTERNOON AS A RESULT OF THUNDERSTORMS. ALBANY NEW YORK REPORTED A WIND GUST TO NEAR 60 MPH AROUND 5 PM. THE POTENTIAL EXISTS FOR DAMAGING WINDS...DEADLY LIGHTNING AND HAIL LATER THIS EVENING. IF YOU ARE OUT OF DOORS YOU SHOULD TAKE COVER IF THREATENING WEATHER APPROACHES. MARINERS SHOULD HEAD FOR A SAFE HARBOR BEFORE THREATENING WEATHER NEARS. SISSON
Special weather statement, Jun 11, 6:30 PM EDT, 28 minutes before
MAZALL-112330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOSTON MA 623 PM EDT TUE JUN 11 1991 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM FOR MOST OF MASSACHUSETTS EXCEPT CAPE COD AND THE ISLANDS... A SEVERE THUNDERSTORM WARNING HAS BEEN ISSUED FOR NORTHERN WORCESTER COUNTY AND IS IN EFFECT UNTIL 715 PM. AT 615 PM...RADAR INDICATED SHORT LINES OF SHOWERS AND THUNDERSTORMS FROM NEAR LEOMINSTER IN WORCESTER COUNTY THROUGH MUCH OF THE WEST THIRD OF THE STATE INTO NORTHWEST CONNECTICUT. STRONGEST STORMS APPEARED TO BE JUST WEST OF LEOMINSTER AND BETWEEN ASHBURNHAM AND ATHOL. STORMS IN THE MERRIMACK AND NASHOBA VALLEYS OF NORTHEAST MASSACHUSETTS SHOULD PRODUCE STRONG WIND GUSTS...SMALL HAIL AND BRIEFLY HEAVY RAIN BETWEEN 630 AND 8 PM. IF THREATENING WEATHER IS SIGHTED...SEEK SAFE SHELTER IMMEDIATELY. STORMS WERE MOVING EAST AT ABOUT 35 MPH AND SHOULD MOVE INTO THE NORTH PORTION OF MIDDLESEX COUNTY NEAR LOWELL AND AYER BETWEEN 630 AND 700 PM. IF THE STORMS HOLD TOGETHER THEY WOULD CROSS THE BOSTON METRO AREA AND THE NORTH SHORE INCLUDING CAPE ANN...PEABODY AND NEWBURYPORT BETWEEN 715 AND 845 PM. THE NEXT STATEMENT SHOULD BE ISSUED AROUND 655 }PM. DRAG
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 6:11 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Worcester | 64 min |
| Jun 11, 6:14 PM EDT | Severe Thunderstorm Warning | BOX | Hampden | 46 min |
| Jun 11, 7:20 PM EDT | Severe Thunderstorm Warning | BOX | Northwest Hills Planning Region | 40 min |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 1991Every severe thunderstorm warning in 1991
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.