Alert archive / Vermont / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 6, NWS Burlington, VT
NWS Burlington, VT issued this severe thunderstorm warning at May 31, 1987, 1:42 PM EDT for Chittenden County, Lamoille County, Washington County, Vermont. It was in force for 58 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
- May 31, 1987, 1:42 PM EDT (17:42 UTC)
- Expired
- May 31, 1987, 2:40 PM EDT
- In force
- 58 min
- Issued by
- NWS Burlington, VT
- Area
- Whole counties
Counties Chittenden County, VT, Lamoille County, VT, Washington County, VT
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 31, 2:00 PM EDT | Thunderstorm Wind 0 | Lamoille, VT | |
| May 31, 2:05 PM EDT | Thunderstorm Wind 0 | Washington, VT | |
| May 31, 2:30 PM EDT | Thunderstorm Wind 0 | Chittenden, VT |
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
Gray, ME (KGYX), launched 12:00Z, 5.7 hours before the alert went out and 210 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
- 3570 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 58 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, May 31, 12:13 PM EDT, 1 hour 29 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 1210 PM EDT SUN MAY 31 1987 ...THUNDERSTORMS WILL MOVE INTO SOUTHERN ADDISON COUNTY BEFORE 100 PM... AT 1205 PM WEATHER SERVICE RADAR SHOWED THUNDERSTORMS OVER SOUTHERN ESSEX COUNTY OF NEW YORK STATE...MOVING TOWARD LAKE GEORGE AND TICONDEROGA. THE STORMS WILL MOVE EAST AT 25 MPH AND WILL MOVE INTO ADDISON COUNTY AROUND SHOREHAM AND ORWELL BY 100 PM. ALONG WITH VERY HEAVY RAINS...THE STORMS MAY ALSO BRING GUSTY WINDS TO BETTER THAN 40 MPH AND DANGEROUS LIGHTNING. IF STORMS APPROACH YOU...SEEK SHELTER INDOORS. END...WSG.
Special weather statement, May 31, 12:34 PM EDT, 1 hour 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 1230 PM EDT SUN MAY 31 1987 ...THUNDERSTORMS ARE MOVING ACROSS SOUTHERN LAKE CHAMPLAIN... AT 1230 PM WEATHER SERVICE RADAR SHOWED THUNDERSTORMS OVER SOUTHERN LAKE CHAMPLAIN BETWEEN CHIMNEY POINT AND BASIN HARBOR. THE STORMS WILL MOVE EAST AT 25 MPH AND WILL BE NEAR VERGENNES BY 1245 PM. ALONG WITH VERY HEAVY RAINS...THE STORMS MAY ALSO BRING GUSTY WINDS TO BETTER THAN 40 MPH AND DANGEROUS LIGHTNING. BOATERS ON LAKE CHAMPLAIN SHOULD GET TO SHORE AT THE FIRST SIGN OF THREATENING WEATHER. SUDDEN SQUALLS COULD CAPSIZE SMALLER BOATS. IF STORMS APPROACH YOU...SEEK SHELTER INDOORS. END...WSG.
Special weather statement, May 31, 1:25 PM EDT, 17 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 125 PM EDT SUN MAY 31 1987 ...THUNDERSTORMS WERE OVER CHITTENDEN AND ADDISON COUNTIES... AT 120 PM EDT THUNDERSTORMS WITH GUSTS TO 40 MPH...3/8 INCH HAIL... AND HEAVY RAINS WERE LOCATED OVER BURLINGTON AIRPORT. THE STORMS ARE MOVING EAST AT 25 MPH AND WILL MOVE INTO WASHINGTON AND LAMOILLE COUNTIES BY 145 PM. ALONG WITH VERY HEAVY RAINS...THE STORMS WILL ALSO HAVE DANGEROUS LI+GHTNING. BOATERS ON LAKE CHAMPLAIN SHOULD GET TO SHORE AT THE FIRST SIGN OF THREATENING WEATHER. SUDDEN SQUALLS COULD CAPSIZE SMALLER BOATS. IF STORMS APPROACH YOU...SEEK SHELTER INDOORS. END...WSG.
Special weather statement, May 31, 1:27 PM EDT, 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 125 PM EDT SUN MAY 31 1987 ...THUNDERSTORMS WERE OVER CHITTENDEN AND ADDISON COUNTIES... AT 120 PM EDT THUNDERSTORMS WITH GUSTS TO 40 MPH...3/8 INCH HAIL... AND HEAVY RAINS WERE LOCATED OVER BURLINGTON AIRPORT. THE STORMS ARE MOVING EAST AT 25 MPH AND WILL MOVE INTO WASHINGTON AND LAMOILLE COUNTIES BY 145 PM. THE STORMS WILL HAVE DANGEROUS LIGHTNING...HEAVY RAINS THAT WILL -CAUSE FLOODING OF STREETS AND POOR DRAINAGE AREAS. BOATERS ON LAKE CHAMPLAIN SHOULD GET TO SHORE AT THE FIRST SIGN OF THREATENING WEATHER. SUDDEN SQUALLS COULD CAPSIZE SMALLER BOATS. IF STORMS APPROACH YOU...SEEK SHELTER INDOORS. END...WSG.
Special weather statement, May 31, 1:34 PM EDT, 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 125 PM EDT SUN MAY 31 1987 ...THUNDERSTORMS WERE OVER CHITTENDEN AND ADDISON COUNTIES... A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 900 PM FOR VERMONT FROM ADDISON...WASHINGTON AND ORANGE COUNTIES...SOUTH. AT 120 PM EDT THUNDERSTORMS WITH GUSTS TO 40 MPH...3/8 INCH HAIL... AND HEAVY RAINS WERE LOCATED OVER BURLINGTON AIRPORT. THE STORMS ARE MOVING EAST AT 25 MPH AND WILL MOVE INTO WASHINGTON AND LAMOILLE COUNTIES BY 145 PM. THE STORMS WILL HAVE DANGEROUS LIGHTNING...HEAVY RAINS THAT WILL CAUSE FLOODING OF STREETS AND POOR DRAINAGE AREAS. BOATERS ON LAKE CHAMPLAIN SHOULD GET TO SHORE AT THE FIRST SIGN OF THREAT;ENING WEATHER. SUDDEN SQUALLS COULD CAPSIZE SMALLER BOATS. IF STORMS APPROACH YOU...SEEK SHELTER INDOORS. END...WSG.
The office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 2:00 PM EDT | Tornado Warning | BTV | Chittenden, Lamoille | 60 min |
Nearby
Severe Thunderstorm Warnings in Vermont, 1987Every severe thunderstorm warning in 1987
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.