Alert archive / New York / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 21, NWS Burlington, VT

May 31, 1998Essex County, Franklin County, New York

NWS Burlington, VT issued this severe thunderstorm warning at May 31, 1998, 3:21 PM EDT for Essex County, Franklin County, New York. It was in force for 59 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
May 31, 1998, 3:21 PM EDT (19:21 UTC)
Expired
May 31, 1998, 4:20 PM EDT
In force
59 min
Issued by
NWS Burlington, VT
Area
Whole counties

Counties Essex County, NY, Franklin County, NY

The radar

The Burlington radar (KCXX), 71 km from the middle of the area, began a volume at 19:21 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 12:00Z, 7.4 hours before the alert went out and 186 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-pSkew-T log-p diagram, Albany, NY at 12:00Z on 1998-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 1998-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 188 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1673 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
188 m²/s²
0-3 km storm-relative helicity
264 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBTV 311921 RRA
SVRBTV
NYC031-033-312020-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
321 PM EDT SUN MAY 31 1998

THE NATIONAL WEATHER SERVICE IN BURLINGTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FRANKLIN COUNTY IN NORTHERN NEW YORK
  ESSEX COUNTY IN NORTHERN NEW YORK

* UNTIL 420 PM EDT.

* AT 320 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERE
  THUNDERSTORMS RAY BROOK AND LAKE NPLACID...MOVING EAST AT 60 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  WILLSBORO AND KEENE VALLEY BY 335 PM

SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCED WARNING.

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 11:42 AM EDTSevere Thunderstorm WarningBTVSt. Lawrence63 min
May 31, 12:51 PM EDTSevere Thunderstorm WarningBTVFranklin, St. Lawrence59 min
May 31, 3:22 PM EDTSevere Thunderstorm WarningBTVFranklin, St. Lawrence63 min
May 31, 4:18 PM EDTSevere Thunderstorm WarningBTVClinton62 min

Nearby

Severe Thunderstorm Warnings in New York, 1998Every 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.