Alert archive / New York / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 65, NWS New York, NY

July 23, 1998Suffolk County, New York

NWS New York, NY issued this severe thunderstorm warning at Jul 23, 1998, 6:57 PM EDT for Suffolk County, New York. It was in force for 63 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
Jul 23, 1998, 6:57 PM EDT (22:57 UTC)
Expired
Jul 23, 1998, 8:00 PM EDT
In force
63 min
Issued by
NWS New York, NY
Area
Whole counties

County Suffolk County, NY

The radar

The Brookhaven radar (KOKX), 17 km from the middle of the area, began a volume at 22:58 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 23, 12:45 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 11.0 hours before the alert went out and 17 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, Brookhaven, NY at 12:00Z on 1998-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 130 joules per kilogram.LCLLFCEL10008507005003002001001 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, Brookhaven, NY at 12:00Z on 1998-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.193958Sfc1 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
130 J/kg
Mixed-layer CIN
-168 J/kg
Mixed-layer LCL
1570 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
40 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

929 
WUUS1 KNYC 232256 RRA
SVRNYC
ANZ330-335-350-355-NYC103-240000-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
657 PM EDT THU JUL 23 1998

THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN SUFFOLK COUNTY INCLUDING ADJACENT COASTAL WATERS IN
  SOUTHEASTERN NEW YORK

* UNTIL 800 PM EDT

* AT 654 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR IN UPTON

* NY INDICATED A SEVERE THUNDERSTORM ALONG THE NORTH SHORE OF LONG
ISLAND JUST EAST OF PORT JEFFERSON. THE STORM IS MOVING EAST AT 30
MPH AND WILL AFFECT TOWNS FROM SOUND BEACH TO WADING RIVER
WITHIN THE NEXT 15 MINUTES AND POINTS EAST AFTERWARDS.

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS

EKH

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 23, 3:05 PM EDT, 3 hours 52 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
305 PM EDT THU JUL 23 1998

...THE SEVERE THUNDERSTORM WATCH IS CANCELLED
   FOR FAIRFIELD AND NEW HAVEN COUNTIES...

ALTHOUGH ADDITIONAL SCATTERED SHOWERS AND THUNDERSTORMS ARE POSSIBLE
UNTIL AROUND MIDNIGHT...THE THREAT FOR SEVERE THUNDERSTORMS HAS
DECREASED.

A LINE OF HEAVY SHOWERS AND THUNDERSTORMS WILL CONTINUE TO MOVE EAST
ACROSS EASTERN CONNECTICUT AND EASTERN LONG ISLAND SOUND DURING THE
NEXT COUPLE HOURS. TORRENTIAL RAINS ALONG WITH STRONG GUSTY WINDS
ARE POSSIBLE AS THIS LINE MOVES EAST.

STAY TUNED TO NATIONAL WEATHER SERVICE SHORT TERM FORECASTS OR FOR
POSSIBLE WATCHES OR WARNINGS.

GC
Special weather statement, Jul 23, 3:05 PM EDT, 3 hours 52 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
305 PM EDT THU JUL 23 1998

...THE SEVERE THUNDERSTORM WATCH IS CANCELLED
   FOR FAIRFIELD AND NEW HAVEN COUNTIES...

ALTHOUGH ADDITIONAL SCATTERED SHOWERS AND THUNDERSTORMS ARE POSSIBLE
UNTIL AROUND MIDNIGHT...THE THREAT FOR SEVERE THUNDERSTORMS HAS
DECREASED.

A LINE OF HEAVY SHOWERS AND THUNDERSTORMS WILL CONTINUE TO MOVE EAST
ACROSS EASTERN CONNECTICUT AND EASTERN LONG ISLAND SOUND DURING THE
NEXT COUPLE HOURS. TORRENTIAL RAINS ALONG WITH STRONG GUSTY WINDS
ARE POSSIBLE AS THIS LINE MOVES EAST.

STAY TUNED TO NATIONAL WEATHER SERVICE SHORT TERM FORECASTS OR FOR
POSSIBLE WATCHES OR WARNINGS.

GC
Special weather statement, Jul 23, 5:00 PM EDT, 1 hour 57 minutes before
CTZ005>012-240000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
500 PM EDT THU JUL 23 1998

...SEVERE THUNDERSTORM WATCH CANCELED FOR SOUTHERN CONNECTICUT...

THE SEVERE THUNDERSTORM WATCH IS CANCELLED FOR THE FOLLOWING
COUNTIES IN SOUTHERN CONNECTICUT...

FAIRFIELD...NEW HAVEN...MIDDLESEX...NEW LONDON

THE LINE OF HEAVY THUNDERSTORMS HAS MOVED EAST AND AS A
RESULT...THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED ACROSS
~SOUTHERN CONNECTICUT.

HOWEVER...SCATTERED THUNDERSTORMS WILL BE POSSIBLE TONIGHT AND THESE
STORMS MAY PRODUCE LOCALLY GUSTY WINDS AND SMALL HAIL.

EKH
Special weather statement, Jul 23, 5:00 PM EDT, 1 hour 57 minutes before
CTZ005>012-240000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
500 PM EDT THU JUL 23 1998

...SEVERE THUNDERSTORM WATCH CANCELED FOR SOUTHERN CONNECTICUT...

THE SEVERE THUNDERSTORM WATCH IS CANCELLED FOR THE FOLLOWING
COUNTIES IN SOUTHERN CONNECTICUT...

FAIRFIELD...NEW HAVEN...MIDDLESEX...NEW LONDON

THE LINE OF HEAVY THUNDERSTORMS HAS MOVED EAST AND AS A
RESULT...THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED ACROSS
~SOUTHERN CONNECTICUT.

HOWEVER...SCATTERED THUNDERSTORMS WILL BE POSSIBLE TONIGHT AND THESE
STORMS MAY PRODUCE LOCALLY GUSTY WINDS AND SMALL HAIL.

EKH

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.