Alert archive / Massachusetts / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 4, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at May 23, 1994, 2:08 PM EDT for Middlesex County, Massachusetts. It was in force for 52 min.
The area
The counties it named.
The facts
- Issued
- May 23, 1994, 2:08 PM EDT (18:08 UTC)
- Expired
- May 23, 1994, 3:00 PM EDT
- In force
- 52 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Whole counties
County Middlesex County, MA
The nearest sounding before it
Chatham, MA (KCHH), launched 12:00Z, 6.1 hours before the alert went out and 148 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
- 1157 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS1 KBOS 231809 SVRBOX MAC017-231900- BULLETIN - EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TAUNTON MA 208 PM EDT MON MAY 23 1994 THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 300 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN MASSACHUSETTS ...NORTHERN MIDDLESEX COUNTY AT 208 PM RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES NORTHWEST OF LOWELL. THIS STORM WAS LIKELY PRODUCING LARGE HAIL. IT WAS MOVING TO THE SOUTHEAST AT 40 MPH. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
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, May 23, 1:30 PM EDT, 38 minutes before
MAZ004-012-231900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WORCESTER MA 130 PM EDT MON MAY 23 1994 ...THUNDERSTORMS WITH HEAVY RAIN AND SMALL HAIL ARE OCCURRING IN CENTRAL MASSACHUSETTS... AT 125 PM NATIONAL WEATHER SERVICE RADAR INDICATED A THUNDERSTORM WITH SMALL HAIL NEAR STERLING. MARBLE SIZED HAIL WAS REPORTED AS THIS STORM MOVED THROUGH LEOMINSTER AT 1PM. THE STORM IS MOVING SOUTHEAST AT 25 MPH AND WILL AFFECT THE EASTERN PORTION OF WORCESTER COUNTY UNTIL AROUND 3PM. CULLEN
Special weather statement, May 23, 1:34 PM EDT, 34 minutes before
MAZ004-012-231900-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WORCESTER MA
130 PM EDT MON MAY 23 1994
...THUNDERSTORMS WITH HEAVY RAIN AND SMALL HAIL ARE OCCURRING IN
CENTRAL MASSACHUSETTS...
AT 125 PM NATIONAL WEATHER SERVICE RADAR INDICATED A THUNDERSTORM
WITH SMALL HAIL NEAR STERLING. MARBLE SIZED HAIL WAS REPORTED AS
THIS STORM MOVED THROUGH LEOMINSTER AT 1PM.
$
THE STORM IS MOVING SOUTHEAST AT 25 MPH AND WILL AFFECT THE EASTERN
PORTION OF WORCESTER COUNTY UNTIL AROUND 3PM.
CULLENSpecial weather statement, May 23, 2:05 PM EDT, 3 minutes before
MAZ005-013-014-232000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TAUNTON MA 203 PM EST MON MAY 23 1994 ...STRONG THUNDERSTORMS WILL MOVE INTO BOSTONS WESTERN AND NORTHERN SUBURBS BETWEEN 2 AND 4 PM... AT 2 PM SEVERAL STRONG THUNDERSTORMS WERE APPROACHING THE WORCESTER AND MIDDLESEX COUNTY LINE. A FEW OF THESE THUNDERSTORMS MAY CONTAIN LARGE HAIL AND DAMAGING WINDS. ONE INCH HAIL WAS REPORTED IN NORTHBORO AT 155 PM. AT 2 PM THE STRONGEST THUNDERSTORMS WERE IN THE PEPPERELL AREA AND APPROACHING THE WESTBORO HOPKINGTON AREA. BE ALERT FOR ANY LATER WARNINGS OR STATEMENTS. SEEK SHELTER IMMEDIATELY IF A WARNING IS ISSUED OR THREATENING WEATHER APPROACHES. THE GREATEST THREAT OF STRONG THUNDERSTORMS IN EASTERN MASSACHUSETTS THROUGH 330 PM WILL BE IN MIDDLESEX AND NORFOLK COUNTIES. THOMPSON
The office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 23, 1:45 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 45 min |
| May 23, 2:34 PM EDT | Severe Thunderstorm Warning | BOX | Worcester | 56 min |
Nearby
Severe Thunderstorm Warnings in Massachusetts, 1994Every severe thunderstorm warning in 1994
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.