Alert archive / Massachusetts / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 49, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 29, 1993, 8:43 PM EDT for Worcester County, Massachusetts. It was in force for 62 min.
The area
The counties it named.
The facts
- Issued
- Jul 29, 1993, 8:43 PM EDT (00:43 UTC)
- Expired
- Jul 29, 1993, 9:45 PM EDT
- In force
- 62 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Whole counties
County Worcester County, MA
The nearest sounding before it
Albany, NY (KALB), launched 00:00Z, 0.7 hours before the alert went out and 162 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
- 111 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 1450 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- -91 m²/s²
- 0-3 km storm-relative helicity
- 1 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KORH 300044 SVRORH MAC027-300145- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WORCESTER MA 843 PM EDT THU JUL 29 1993 THE NATIONAL WEATHER SERVICE IN WORCESTER HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 945 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN CENTRAL MASSACHUSETTS ...NORTH CENTRAL WORCESTER COUNTY NATIONAL WEATHER SERVICE RADAR INDICATES A LINE OF SEREVE THUNDERSTORMS APPROACHING NORTHWESTERN WORCESTER COUNTY. THESE STORMS ARE MOVING EAST AT 25 MPH. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSLIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
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, Jul 29, 4:25 PM EDT, 4 hours 18 minutes before
CTZALL-MAZALL-RIZALL-300100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOSTON MA 400 PM EDT THU JUL 29 1993 A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR WESTERN AND CENTRAL MASSACHUSETTS UNTIL 9 PM EDT...FOR THE AREA FROM THE WESTERN PORTIONS OF MIDDLESEX AND NORFOLK COUNTY TO THE BERKSHIRES. A FEW SHOWERS AND THUNDERSTORMS WERE MOVING INTO BERKSHIRE COUNTY AT 4PM. A RAIN SHOWER WITH THUNDER AND LIGHTENING WAS REPORTED IN THE ALBANY AREA BEFORE 4 PM. HEAVIER THUNDERSTORMS WERE LOCATED NORTH OF MASSACHUSETTS...IN VERMONT WHERE SEVERE THUNDERSTORM WARNINGS HAVE BEEN ISSUED FOR PORTIONS OF THAT STATE. THERE IS THE POTENTIAL IN WESTERN AND CENTRAL MASSACHUSETTS FOR SOME OF THESE THUNDERSTORMS TO HAVE HIGH WIND...TORRENTIAL RAIN AND HAIL. THEY SHOULD WEAKEN AS THEY MOVE INTO EASTERN AREAS LATER THIS EVENING. THESE THUNDERSTORMS COULD CAUSE BRIEF FLOODING OF STREETS AND HIGHWAYS IN SOME LOCATIONS OF SOUTHERN NEW ENGLAND THIS AFTERNOON...EXCEPT FOR CAPE COD. JRS
Special weather statement, Jul 29, 5:55 PM EDT, 2 hours 48 minutes before
CTZALL-MAZALL-RIZALL-300100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOSTON MA 555 PM EDT THU JUL 29 1993 A SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT FOR WESTERN AND CENTRAL MASSACHUSETTS UNTIL 9 PM EDT...FOR THE AREA FROM THE WESTERN PORTIONS OF MIDDLESEX AND NORFOLK COUNTY TO THE BERKSHIRES. AT 538 PM A SEVERE THUNDERSTORM WARNING WAS ISSUED FOR BERKSHIRE COUNTY...VALID UNTIL 645 PM. THAT THUNDERSTORM WAS EXPECTED TO PASS NEAR THE TOWNS OF PITTSFIELD AND BERKSHIRE. THE SAME THUNDERSTORM COMPLEX IS EXPECTED TO HOLD TOGETHER LONG ENOUGH TO AFFECT FRANKLIN COUNTY...THUS RESIDENTS IN FRANKLIN COUNTY SHOULD BE PREPARED FOR STRONG GUSTY WINDS...HEAVY RAINFALL...DANGEROUS LIGHTNING AND POSSIBLE HAIL. AS OF 6 PM...NO THUNDERSTORMS HAVE BEEN REPORTED OVER EASTERN MASSACHUSETTS...RHODE ISLAND OR CONNECTICUT...BUT THERE IS STILL A CHANCE SOME MAY FORM...SO A WATCHFUL EYE TO THE SKY IS IN ORDER. ALSO...RESIDENTS OF SOUTHERN NEW ENGLAND SHOULD MONITOR RADIO OR TV BROADCASTS IN CASE ADDITIONAL WARNINGS ARE ISSUED. RW
Special weather statement, Jul 29, 5:57 PM EDT, 2 hours 46 minutes before
CTZALL-MAZALL-RIZALL-300100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOSTON MA 555 PM EDT THU JUL 29 1993 A SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT FOR WESTERN AND CENTRAL MASSACHUSETTS UNTIL 9 PM EDT...FOR THE AREA FROM THE WESTERN PORTIONS OF MIDDLESEX AND NORFOLK COUNTY TO THE BERKSHIRES. AT 538 PM A SEVERE THUNDERSTORM WARNING WAS ISSUED FOR BERKSHIRE COUNTY...VALID UNTIL 645 PM. THAT THUNDERSTORM WAS EXPECTED TO PASS NEAR THE TOWNS OF PITTSFIELD AND BERKSHIRE. THE SAME THUNDERSTORM COMPLEX IS EXPECTED TO HOLD TOGETHER LONG ENOUGH TO AFFECT FRANKLIN COUNTY...THUS RESIDENTS IN FRANKLIN COUNTY SHOULD BE PREPARED FOR STRONG GUSTY WINDS...HEAVY RAINFALL...DANGEROUS LIGHTNING AND POSSIBLE HAIL. AS OF 6 PM...NO THUNDERSTORMS HAVE BEEN REPORTED OVER EASTERN MASSACHUSETTS...RHODE ISLAND OR CONNECTICUT...BUT THERE IS STILL A CHANCE SOME MAY FORM...SO A WATCHFUL EYE TO THE SKY IS IN ORDER. ALSO...RESIDENTS OF SOUxTHERN NEW ENGLAND SHOULD MONITOR RADIO OR TV BROADCASTS IN CASE ADDITIONAL WARNINGS ARE ISSUED. RW
Special weather statement, Jul 29, 7:30 PM EDT, 1 hour 13 minutes before
MAZALL-300300- SPECIAL WEATHER STATEMENT...CORRECTED FOR PARAGRAPH 4... NATIONAL WEATHER SERVICE BOSTON MA 730 PM EDT THU JUL 29 1993 A SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT FOR WESTERN AND CENTRAL MASSACHUSETTS UNTIL 9 PM EDT...FOR THE AREA FROM THE WESTERN PORTIONS OF MIDDLESEX AND NORFOLK COUNTY TO THE BERKSHIRES. AT 730 PM THUNDERSTORMS CONTINUED TO FORM OVER BERKSHIRE...FRANKLIN... HAMPSHIRE AND HAMPDEN COUNTIES. THESE STORMS ARE STILL ABLE TO PRODUCE STRONG GUSTY WINDS...BRIEF HEAVY RAIN...HAIL AND DANGEROUS LIGHTNING. WHILE THE FOCUS OF ACTIVITY APPEARS TO BE SHIFTING NORTHWARD INTO VERMONT...PEOPLE IN WESTERN MASSACHUSETTS SHOULD CONTINUE MONITORING THE SITUATION. SHOULD A THUNDERSTORM APPROACH YOUR AREA...OR A WARNING BE ISSUED...TAKE SHELTER IMMEDIATELY. THUNDERSTORM ACTIVITY HAS NOT YET MATERIALIZED IN EASTERN MASSACHUSETTS. WHILE THUNDERSTORMS MAY STILL OCCUR OVERNIGHT... THE CHANCE OF SEVERE ACTIVITY IN EASTERN AREAS IS DIMINISHING WITH TIME. THE NEXT STATEMENT WILL BE ISSUED AROUND 9 PM. RW
Special weather statement, Jul 29, 7:30 PM EDT, 1 hour 13 minutes before
MAZALL-300300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BOSTON MA 730 PM EDT THU JUL 29 1993 A SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT FOR WESTERN AND CENTRAL MASSACHUSETTS UNTIL 9 PM EDT...FOR THE AREA FROM THE WESTERN PORTIONS OF MIDDLESEX AND NORFOLK COUNTY TO THE BERKSHIRES. AT 730 PM THUNDERSTORMS CONTINUED TO FORM OVER BERKSHIRE...FRANKLIN... HAMPSHIRE AND HAMPDEN COUNTIES. THESE STORMS ARE STILL ABLE TO PRODUCE STRONG GUSTY WINDS...BRIEF HEAVY RAIN...HAIL AND DANGEROUS LIGHTNING. WHILE THE FOCUS OF ACTIVITY APPEARS TO BE SHIFTING NORTHWARD INTO VERMONT...PEOPLE IN WESTERN MASSACHUSETTS SHOULD CONTINUE MONITORING THE SITUATION. SHOULD A THUNDERSTORM APPROACH YOUR AREA...OR A WARNING BE ISSUED...TAKE SHELTER IMMEDIATELY. THUNDERSTORM ACTIVITY HAS NOT YET MATERIALIZED IN EASTERN MASSACHUSETTS. WHILE THUNDERSTORMS MAY STILL OCCUR OVERNIGHT...THE CHANCE OF SEVERE ACTIVITY IS DIMINISHING WITH TIME. THE NEXT STATEMENT WILL BE ISSUED AROUND 9 PM. RW
Special weather statement, Jul 29, 7:39 PM EDT, 1 hour 4 minutes before
MAZALL-300300- SPECIAL WEATHER STATEMENT...CORRECTED FOR PARAGRAPH 4... NATIONAL WEATHER SERVICE BOSTON MA 730 PM EDT THU JUL 29 1993 A SEVERE THUNDERSTORM WATCH CONTINUES IN EFFECT FOR WESTERN AND CENTRAL MASSACHUSETTS UNTIL 9 PM EDT...FOR THE AREA FROM THE WESTERN PORTIONS OF MIDDLESEX AND NORFOLK COUNTY TO THE BERKSHIRES. AT 730 PM THUNDERSTORMS CONTINUED TO FORM OVER BERKSHIRE...FRANKLIN... HAMPSHIRE AND HAMPDEN COUNTIES. THESE STORMS ARE STILL ABLE TO PRODUCE STRONG GUSTY WINDS...BRIEF HEAVY RAIN...HAIL AND DANGEROUS LIGHTNING. WHILE THE FOCUS OF ACTIVITY APPEARS TO BE SHIFTING NORTHWARD INTO VERMONT...PEOPLE IN WESTERN MASSACHUSETTS SHOULD CONTINUE MONITORING THE SITUATION. SHOULD A THUNDERSTORM APPROACH YOUR AREA...OR A WARNING BE ISSUED...TAKE SHELTER IMMEDIATELY. THUNDERSTORM ACTIVITY HAS NOT YET MATERIALIZED IN EASTERN MASSACHUSETTS. WHILE THUNDERSTORMS MAY STILL OCCUR OVERNIGHT... THE CHANCE OF SEVERE ACTIVITY IN EASTERN AREAS IS DIMINISHING WITH TIME. THE NEXT STATEMENT WILL BE ISSUED AROUND 9 PM. RW
Nearby
Severe Thunderstorm Warnings in Massachusetts, 1993Every severe thunderstorm warning in 1993
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.