Alert archive / Massachusetts / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 2, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 20, 1990, 7:15 PM EDT for Worcester County, Massachusetts. It was in force for 30 min.
The area
The counties it named.
The facts
- Issued
- Jul 20, 1990, 7:15 PM EDT (23:15 UTC)
- Expired
- Jul 20, 1990, 7:45 PM EDT
- In force
- 30 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Whole counties
County Worcester County, MA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Albany, NY (KALB), launched 12:00Z, 11.3 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
- 574 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 993 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KORH 202309 SVRORH MAC027-210445- BULLETIN-IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE WORCESTER MA 715 PM EDT FRI JUL 20 1990 EXPIRES 745 PM EDT THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 745 PM EDT FOR THE FOLLOWING COUNTY IN MASSACHUSETTS...EASTERN WORCESTER COUNTY AT 715 PM EDT RADAR SHOWED A LINE OF SEVERE THUNDERSTORMS IN CENTRAL WORCESTER COUNTY MOVING TOWARD THE EAST AT ABOUT 40 MPH. THESE STORMS HAVE DOWNED TREES WITH HEAVY WINDS AND VERY HEAVY SHOWERS. THE SEVERE THUNDERSTORM WARNING FOR EASTERN FRANKLIN COUNTY HAS EXPIRED AS THE STORMS MOVED OUT OF TJHE COUNTY. IF THREATENING WEATHER OCCURS SEEK A SAFE PLACE IMMEDIATELY. AC
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 20, 6:54 PM EDT, 21 minutes before
CTZ001>004-MAZ005-230200- SPECIAL WEATHER STATEMENT FOR NORTHERN CONNECTICUT AND HAMPDEN COUNTY MA NATIONAL WEATHER SERVICE HARTFORD CT 650 PM EDT FRI JUL 20 1990 ...THUNDERSTORMS GETTING READY TO MOVE INTO NORTHERN CONNECTICUT AND HAMPDEN COUNTY IN MASSACHUSETTS... AT 630 PM EDT WEATHER SERVICE RADAR INDICATED A LINE OF SHOWERS AND THUNDERSTORMS FROM 10 MILES EAST OF KEENE NEW HAMPSHIRE...EXTENDING SOUTH THRU NORTHAMPDEN MASSACHUSETTS...THEN SOUTHWEST TO SOUTHERN BERKSHIRE COUNTY MASSACHUSETTS. ANOTHER AREA OF THUNDERSTORMS EXTENDED FROM HUDSON NEW YORK TO POUGHKEEPSIE. ALL SHOWERS AND THUNDERSTORMS WERE MOVING TO THE EAST AT AROUND 40 MPH. SOME OF THESE THUNDERSTORMS MAY CONTAIN HEAVY DOWNPOURS...GUSTY WINDS... SMALL HAIL AND DANGEROUS LIGHTNING. THUNDERSTORMS WILL REACH THE SPRINGFIELD AREA BY 730 PM AND BE EAST OF HAMPDEN COUNTY BY 9 PM. THE THUNDERSTORMS OVER EASTERN NEW YORK STATE WILL MOVE INTO LITCHFIELD COUNTY 730/ PM AND WILL CONTINUE TO MOVE ACROSS CONNECTICUT...REACHING THE HARTFORD AREA AROUND 830 PM. IF THREATENING WEATHER APROACHES SEEK SHELTER...REMEMBER...LIGHTNING IS THE THUNDERSTORM/S NUMBER ONE KILLER. DUNHAM
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 6:15 PM EDT | Severe Thunderstorm Warning | BOX | Franklin, Worcester | 60 min |
| Jul 20, 7:45 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 30 min |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 1990Every severe thunderstorm warning in 1990
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.