Alert archive / New York / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 71, NWS Burlington, VT

September 27, 1998Clinton County, New York; Grand Isle County, Vermont

NWS Burlington, VT issued this severe thunderstorm warning at Sep 27, 1998, 3:26 AM EDT for Clinton County, New York; Grand Isle County, Vermont. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 27, 1998, 3:26 AM EDT (07:26 UTC)
Expired: Sep 27, 1998, 4:15 AM EDT
In force: 49 min
Issued by: NWS Burlington, VT
Area: Whole counties

Counties Clinton County, NY, Grand Isle County, VT

The radar

The Burlington radar (KCXX), 38 km from the middle of the area, began a volume at 07:27 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 7.4 hours before the alert went out and 233 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 134 J/kg
Mixed-layer CIN: -240 J/kg
Mixed-layer LCL: 952 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

646 
WUUS1 KBTV 270728 RRA
SVRBTV
NYC019-VTC013-270815-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
326 AM EDT SUN SEP 27 1998

THE NATIONAL WEATHER SERVICE IN BURLINGTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLINTON COUNTY IN NORTHERN NEW YORK
  GRAND ISLE COUNTY IN NORTHWESTERN VERMONT

* UNTIL 415 AM EDT

* AT 325 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM CANNON CORNERS TO CHATEGUAY...
  MOVING EAST-SOUTHEAST AT 45 TO 50 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  ROUSES POINT TO MERRILL BY 335 AM
  NORTH HERO TO RIVERVIEW BY 345 AM

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...LARGE HAIL AND DEADLY
LIGHTNING. IF CAUGHT OUTSIDE...CROUCH DOWN IN A DITCH AND COVER YOUR
HEAD. AVOID TREES...HILL TOPS AND METAL OBJECTS.

MCGILL

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.

NWS Burlington, VT wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 27, 1:45 AM EDT, 1 hour 41 minutes earlier.

Area forecast discussion, Sep 27, 1:45 AM EDT, 1 hour 41 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BURLINGTON VT
145 AM EDT SUN SEP 27 1998

WRM FNT STUCK IN WRN NY FM ABT ROC-BGM.  MAY HV A TUFF TIME PUSHING
INTO FA OVRNGT.  FIRST MCS MVD ACRS PTNS OF FA THIS EVE WITH THE
BACK EDGE JUST CLRG THE CT VLY.  ANTHR MCS OVR SRN QB MVG EWD.  SO
FAR THIS HAS YET TO MK A RIGHT TURN TWD FA.  IF IT DOES LOOKS LIKE
MAINLY NE VT WL BE AFFECTED.  WITH ACTVTY OVR ONT THRT OF TSTMS RMNS
THRU THE MRNG.

WM FNT SHUD LFT INTO FA BY ERLY MRNG.  THE CD FNT WL PUSH TWD NW NY
BY LT MRNG AND BEGIN ENTERING ST LAW VLY ERLY THIS AFTN.  LOOKS LIKE
THERE WL BE A PRE-FNTL TROF TO HELP KICK OFF CNVCTN THIS AFTN.  ETA
HAS CD FNT ON A YSC-BTV-BUF LN BY 00Z.  CUD BE PRETTY INTERESTING
THIS AFTN/EVE.

MSTR WL LNGR BHND FNT INTO MON WITH CYC FLW ALOFT.  SHUD START
SEEING CLRG MON AFTN AS HIGH PRES BEGINS TO ASSERT ITSELF.

CLDS WL KEEP TEMPS FM GETTING AS HIGH AS THEY CUD TDY.  FWC LOOKS
RSNBL.  IF THERE'S A CPLP HRS OF SUN TDY CUD SEE SOME LWR 80S ESP IN
SC VT.  CLDS WL HELP KEEP TEMPS UP A BIT TNT SO MID 50S ARE RSNBL.
FWC TEMPS LOOK A BIT HIGH FOR MON.

MCGILL

In the hours before

Local storm report, Sep 26, 10:52 PM EDT, 4 hours 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BURLINGTON VERMONT
1052 PM EDT SAT SEP 26 1998

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0921 PM    GOUVERNEUR                NY   WIND DAMAGE
09/26/98   ST LAWRENCE                    TREE DOWN ACROSS HIGHWAY
                                          CAUSED VEHICLE ACCIDENT.
                                          POWER OUTAGES. REPORTED BY
                                          TOWN POLICE.

0930 PM    CANTON                    NY   WIND DAMAGE
09/26/98   ST LAWRENCE                    TREE AND LIMBS DOWN ACROSS
                                          ROAD REPORTD BY SHERIFFS
                                          OFFICE

Special weather statement, Sep 27, 12:43 AM EDT, 2 hours 43 minutes before

NYZ026-027-029-030-034-035-VTZ009-011-270745-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
1243 AM EDT SUN SEP 27 1998

...THE SEVERE THUNDERSTORM WATCH THAT HAD BEEN IN EFFECT HAS BEEN
CANCELLED...

THE NATIONAL WEATHER SERVICE HAS CANCELLED THE SEVERE THUNDERSTORM
WATCH FOR ST. LAWRENCE...FRANKLIN AND ESSEX COUNTIES OF NEW YORK AND
ADDISON AND RUTLAND COUNTIES OF VERMONT.  THE THUNDERSTORMS
RESPONSIBLE FOR THE WATCH ISSUANCE HAVE MOVED OFF TO THE SOUTHEAST
OUT OF THE WATCH AREA.

MCGILL

Special weather statement, Sep 27, 12:43 AM EDT, 2 hours 43 minutes before

NYZ026-027-029-030-034-035-VTZ009-011-270745-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
1243 AM EDT SUN SEP 27 1998

...THE SEVERE THUNDERSTORM WATCH THAT HAD BEEN IN EFFECT HAS BEEN
CANCELLED...

THE NATIONAL WEATHER SERVICE HAS CANCELLED THE SEVERE THUNDERSTORM
WATCH FOR ST. LAWRENCE...FRANKLIN AND ESSEX COUNTIES OF NEW YORK AND
ADDISON AND RUTLAND COUNTIES OF VERMONT.  THE THUNDERSTORMS
RESPONSIBLE FOR THE WATCH ISSUANCE HAVE MOVED OFF TO THE SOUTHEAST
OUT OF THE WATCH AREA.

MCGILL

The office that day

Everything else NWS Burlington, VT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 26, 8:40 PM EDT	Severe Thunderstorm Warning	BTV	St. Lawrence	90 min
Sep 27, 3:38 AM EDT	Severe Thunderstorm Warning	BTV	Franklin	37 min
Sep 27, 5:14 AM EDT	Severe Thunderstorm Warning	BTV	Addison, Washington	61 min
Sep 27, 6:26 PM EDT	Severe Thunderstorm Warning	BTV	Franklin	34 min
Sep 27, 6:44 PM EDT	Severe Thunderstorm Warning	BTV	Orleans	46 min
Sep 27, 7:02 PM EDT	Severe Thunderstorm Warning	BTV	Franklin	33 min
Sep 27, 7:33 PM EDT	Severe Thunderstorm Warning	BTV	Lamoille	32 min

Nearby

Severe Thunderstorm Warnings in New York, 1998 Severe Thunderstorm Warnings in Vermont, 1998 Every severe thunderstorm warning in 1998

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; radar from the NEXRAD Level II archive.