Alert archive / Massachusetts / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 16, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 12, 1991, 4:13 PM EDT for Norfolk County, Massachusetts. It was in force for 62 min. 3 reports 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 12, 1991, 4:13 PM EDT (20:13 UTC)
- Expired
- Jun 12, 1991, 5:15 PM EDT
- In force
- 62 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Whole counties
County Norfolk County, MA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 12, 4:19 PM EDT | Thunderstorm Wind 0 | Norfolk, MA | |
| Jun 12, 4:27 PM EDT | Thunderstorm Wind 0 | Norfolk, MA | |
| Jun 12, 4:45 PM EDT | Thunderstorm Wind 0 | Norfolk, 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
Chatham, MA (KCHH), launched 12:00Z, 8.2 hours before the alert went out and 115 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
- 1044 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 108 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 12, 12:23 PM EDT, 3 hours 50 minutes before
MAZALL-CTZALL-RIZALL-122200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOSTON MA 1220 PM EDT WED JUN 12 1991 ...SEVERE THUNDERSTORMS ARE LIKELY IN SOUTHERN NEW ENGLAND THIS AFTERNOON AND EVENING... CONDITIONS ARE BECOMING MORE FAVORABLE FOR SEVERE WEATHER TO DEVELOP OVER SOUTHERN NEW ENGLAND THIS AFTERNOON AND THIS EVENING. SEVERE THUNDERSTORMS HAVE ALREADY BROKEN OUT OVER CENTRAL NEW YORK STATE...WITH REPORTS OF NICKEL SIZED HAIL AND DOWNED POWER LINES. THESE STORMS ARE HEADING EAST AT 30 MPH AND WILL LIKELY MOVE INTO SOUTHERN NEW ENGLAND THIS AFTERNOON. THESE THUNDERSTORMS COULD HAVE LARGE HAIL...STRONG WIND GUSTS...BRIEF HEAVY DOWNPOURS...AND OF COURSE DANGEROUS LIGHTNING. IF YOU ARE PLANNING OUTDOOR ACTIVITIES IN SOUTHERN NEW ENGLAND THIS AFTERNOON AND EVENING...WATCH OUT FOR THREATENING WEATHER AND TAKE IMMEDIATE SHELTER IF THUNDERSTORMS APPROACH OR WARNINGS ARE ISSUED. FURTHER STATEMENTS WILL BE I&SSUED AS NEEDED. WATLING
Special weather statement, Jun 12, 1:18 PM EDT, 2 hours 55 minutes before
MAZALL-CTZALL-RIZALL-130100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOSTON MA 115 PM EDT WED JUN 12 1991 ...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR ALL OF SOUTHERN NEW ENGLAND INCLUDING THE COASTAL WATERS UNTIL 9 PM TONIGHT... SEVERE THUNDERSTORM WATCH NUMBER 510 HAS BEEN ISSUED FOR ALL OF SOUTHERN NEW ENGLAND INCLUDING THE COASTAL WATERS UNTIL 9 PM TONIGHT. A SEVERE THUNDERSTORM WATCH MEANS THAT WINDS IN EXCESS OF 58 MPH AND HAIL 3/4 INCH IN DIAMETER IS POSSIBLE WITHIN THE WATCH AREA. WEATHER CONDITIONS CONTINUE TO EVOLVE...MAKING THE CHANCE OF SEVERE THUNDERSTORMS MORE LIKELY. SEVERE THUNDERSTORMS HAVE ALREADY BROKEN OUT OVER CENTRAL NEW YORK STATE...WITH REPORTS OF NICKEL SIZED HAIL AND DOWNED POWER LINES. THESE STORMS ARE HEADING EAST AT 30 MPH AND WILL LIKELY MOVE INTO WESTERN MASSACHUSETTS BY 2 OR 3 PM THIS AFTERNOON...THEN SPREAD OVER EASTERN PORTIONS OF THE REGION THEREAFTER. ADDITIONALLY...THESE THUNDERSTORMS WILL HAVE BRIEF HEAVY RAIN AND DANGEROUS LIGHTNING. IF YOU ARE PLANNING OUTDOOR ACTIVITIES IN SOUTHERN NEW ENGLAND THIS AFTERNOON AND EVENING...WATCH OUT FOR THREATENING WEATHER AND TAKE IMMEDIATE SHELTER IF THUNDERSTORMS APPROACH OR WARNINGS ARE ISSUED. FURTHER STATEMENTS WILL BE ISSUED AS NEEDED. WATLING
Special weather statement, Jun 12, 1:44 PM EDT, 2 hours 29 minutes before
RIZALL-130100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PROVIDENCE RI 144 PM EDT WED JUN 12 1991 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR RHODE ISLAND UNTIL 9 PM... A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR ALL OF RHODE ISLAND...AS WELL AS THE REMAINDER OF SOUTHERN NEW ENGLAND AND ALL COASTAL WATERS UNTIL 9 PM TONIGHT. A SEVERE THUNDERSTORM WATCH MEANS THAT WINDS IN EXCESS OF 58 MPH AND HAIL 3/4 INCH IN DIAMETER IS POSSIBLE WITHIN THE WATCH AREA. WEATHER CONDITIONS CONTINUE TO EVOLVE...MAKING THE CHANCE OF SEVERE THUNDERSTORMS MORE LIKELY. SEVERE THUNDERSTORMS HAVE ALREADY BROKEN OUT OVER CENTRAL NEW YORK STATE...WITH REPORTS OF NICKEL SIZED HAIL AND DOWNED POWER LINES. THESE STORMS ARE HEADING EAST AT 30 MPH AND WILL LIKELY MOVE INTO WESTERN MASSACHUSETTS BY 2 TO 3 PM...THEN SPREAD INTO THE OCEAN STATE DURING THE EVENING RUSH HOUR. . ADDITIONALLY...THESE THUNDERSTORMS WILL HAVE BRIEF RAIN AND DANGEROUS LIGHTNING. IF YOU ARE PLANNING OUTDOOR ACTIVITIES IN RHODE ISLAND THIS AFTERNOON AND EVENING...WATCH OUT FOR THREATENING WEATHER AND TAKE IMMEDIATE SHELTER IF THUNDERSTORMS STRIKE. MARINERS ON NARRAGANSETT BAY MAY WANT TO STAY CLOSE TO PORT...AN#D BE PREPARED TO HEAD TO HARBOR IMMEDIATELY. VALLEE
Special weather statement, Jun 12, 2:32 PM EDT, 1 hour 41 minutes before
CTZALL-MAZ005-122000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HARTFORD CT 232 PM EDT WED JUN 12 1991 ...THE SEVERE THUNDERSTORM WATCH FOR ALL OF CONNECTICUT AND WESTERN MASSACHUSETTS... A LINE OF THUNDERSTORMS MOVING THROUGH THE BERKSHIRE COUNTY IN MASSACHUSETTS IS MOVING EAST AT 35 MILES AN HOUR AND WILL REACH HAMPEN COUNTY DURING THE NEXT HOUR. THESE THUNDERSTORMS COULD HAVE LAGER HAIL...STRONG WIND GUSTS AND HEAVY DOWNPOURS AND OF COURSE DANGEROUS LIGTNING. IF YOU ARE PLANNING OUTDOOR ACTIVITIES THIS AFTERNOON...WATCH PUT FOR THREATENING WEATHER AND TAKE IMMEDIATE SHELTER IF THREATENING WEATHER APPROACH. WOODARD
Special weather statement, Jun 12, 3:18 PM EDT, 55 minutes before
CTZALL-MAZ005-12 00-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARTFORD CT
PM EDT WED JUN 12 1991
...THE SEVERE THUNDERSTORM WATCH FOR ALL OF CONNECTICUT AND WESTERN
MASSACHUSETTS IS IN EFFECT UNTIL 9 PM TONIGHT...
A LINE OF THUNDERSTORMS FROM MANCHESTER NEW HAMPSHIRE TO KINGSTON
NEW YORK MOVING EAST AT 30 MILES AN HOUR
REPORTS OF WIND AROUND 40 MILES AN HOUR AND SMALL HAIL HAS BEEN
REPORTED IN HAMPEN COUNTY AT 310 PM
IF YOU ARE PLANNING OUTDOOR ACTIVITIES THIS AFTERNOON...WATCH OUT FOR
THREATENING WEATHER AND TAKE IMMEDIATE SHELTER IF THREATENING WEATHER
APPROACH.
WOODARDThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 2:42 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 33 min |
| Jun 12, 2:53 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex | 52 min |
| Jun 12, 3:11 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 64 min |
| Jun 12, 3:32 PM EDT | Severe Thunderstorm Warning | BOX | Essex | 43 min |
| Jun 12, 4:13 PM EDT | Severe Thunderstorm Warning | BOX | Middlesex | 36 min |
| Jun 12, 4:24 PM EDT | Severe Thunderstorm Warning | BOX | Suffolk | 25 min |
| Jun 12, 4:33 PM EDT | Severe Thunderstorm Warning | BOX | Plymouth | 42 min |
| Jun 12, 3:33 PM EDT | Severe Thunderstorm Warning | BOX | Northwest Hills Planning Region | 57 min |
| Jun 12, 3:51 PM EDT | Severe Thunderstorm Warning | BOX | Capitol Planning Region | 69 min |
| Jun 12, 4:50 PM EDT | Severe Thunderstorm Warning | BOX | Southeastern Connecticut Planning Region, Northeastern Connecticut Planning Region | 55 min |
| Jun 12, 4:38 PM EDT | Severe Thunderstorm Warning | BOX | Providence | 52 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.