Alert archive / New York / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 45, NWS New York, NY

June 30, 1998Orange County, New York

NWS New York, NY issued this severe thunderstorm warning at Jun 30, 1998, 12:15 PM EDT for Orange County, New York. It was in force for 45 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: Jun 30, 1998, 12:15 PM EDT (16:15 UTC)
Expired: Jun 30, 1998, 1:00 PM EDT
In force: 45 min
Issued by: NWS New York, NY
Area: Whole counties

County Orange County, NY

The radar

The Albany radar (KENX), 133 km from the middle of the area, began a volume at 16:17 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

Brookhaven, NY (KOKX), launched 12:00Z, 4.3 hours before the alert went out and 135 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: 640 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 542 m above ground
0-6 km bulk shear: 0 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 0 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.

794 
WUUS1 KNYC 301618 RRA
SVRNYC
NYC071-301700-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
1215 PM EDT TUE JUN 30 1998

THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN ORANGE COUNTY IN SOUTHEASTERN NEW YORK

* UNTIL 100 PM EDT

* NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF
THUNDERSTORMS MOVING EAST ACROSS THE COUNTY AT NEAR 40 MPH. THESE
STORMS HAVE A HISTORY OF KNOCKING OVER LARGE TREES IN THE GOSHEN AND
CHESTER AREAS.

SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. GO INSIDE A STURDY BUILDING AND
STAY AWAY FROM WINDOWS

JST


&

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

Local storm report, Jun 30, 9:55 AM EDT, 2 hours 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
955 AM EDT TUE JUN 30 1998

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

0813 AM    DEER PARK                 NY   WIND DAMAGE
06/30/98   SUFFOLK                        TREES DOWN IN WYANDANCH
                                          AND WHEATLY HEIGHTS

0815 AM    CENTEREACH                NY   .75 INCH HAIL
06/30/98   SUFFOLK                        POSSIBLE
                                          TORNADO/MICROBURST
                                          UNCONFIRMED

0830 AM    MT SINAI                  NY   1 INCH HAIL
06/30/98   SUFFOLK

0845 AM    CORAM                     NY   WIND DAMAGE
06/30/98   SUFFOLK                        TREES/WIRES DOWN

0845 AM    HAUPPAUGE                 NY   .75 INCH HAIL
06/30/98   SUFFOLK                        FUNNEL CLOUDS ALSO
                                          REPORTED

DJR

Special weather statement, Jun 30, 11:00 AM EDT, 1 hour 15 minutes before

NYZ0067>081-NJ002>006-011-CT005>012-302100-

SEVERE WEATHER OUTLOOK AND WEATHER MAP DISCUSSION FOR
EXTREME SOUTHEASTERN NEW YORK...NORTHEASTERN NEW JERSEY AND
SOUTHERN CONNECTICUT
NATIONAL WEATHER SERVICE NEW YORK NY
1100 AM EDT TUE JUN 30 1998

...ANOTHER ROUND OF STRONG THUNDERSTORMS POSSIBLE LATER TODAY...

A LOW PRESSURE SYSTEM TRACKING EAST ACROSS SOUTHERN ONTARIO TODAY
DRAGGED A WARM FRONT THROUGH OUR REGION THIS MORNING...AND WILL
PUSH  A COLD FRONT THIS EVENING.

THIS WARM FRONT WAS RESPONSIBLE FOR THE ACTIVE WEATHER THIS
MORNING...ESPECIALLY ACROSS CENTRAL LONG ISLAND. THERE...A
PARTICULARLY STRONG THUNDERSTORM PRODUCED HAIL UP TO ONE INCH IN
DIAMETER ALONG WITH STRONG WINDS THAT TOOK OUT MANY TREES FROM
RONKONKOMA TO CORAM IN SUFFOLK COUNTY. THIS AREA WILL BE INVESTIGATED
THIS AFTERNOON FOR A POSSIBLE TORNADO.

SHOWERS AND LESS INTENSE THUNDERSTORMS WERE STILL AFFECTING THE AREA
AS OF LATE THIS MORNING. WHILE THIS ACTIVITY WILL MOVE EAST...OUT OF
THE AREA...EARLY THIS AFTERNOON...ALLOWING A BREAK...EVEN A FEW
PEAKS OF SUN...DURING THE AFTERNOON.

HOWEVER...THE APPROACH OF THE COLD FRONT WILL CAUSE THUNDERSTORMS TO
FIRE UP AGAIN IN AND WEST OF THE AREA LATE THIS AFTERNOON AND THIS
EVENING. THESE THUNDERSTORMS WILL TRACK EAST ACROSS OUR AREA THROUGH
THIS EVENING. THE SEVERITY OF THESE STORMS WILL BE LIMITED BY THE
FIRST ROUND CLOUDS AND RAIN PREVENTED MUCH SUNSHINE THROUGH THE
MORNING. STILL...ANY THUNDERSTORM LATE TODAY CAN PRODUCE STRONG
GUSTY WIND...HAIL...AND CERTAINLY FREQUENT CLOUD TO GROUND LIGHTNING
AND HEAVY RAIN.

ANY SUNSHINE THIS AFTERNOON WILL HELP TO FURTHER DESTABILIZE THE
ATMOSPHERE...FUELING ANY THUNDERSTORMS THAT FORM LATER ON.

IN ADDITION...ANY HEAVY RAIN IN ADDITION TO WHAT FELL THIS MORNING
CAN EASILY CAUSE POOR DRAINAGE FLOODING...ESPECIALLY IN THOSE AREAS
HARDEST HIT THIS MORNING. ONE SUCH AREA IS METROPOLITAN NEW
JERSEY...JUST WEST OF THE CITY...WHERE ABOUT ONE AND ONE HALF INCHES
OF RAIN FELL WITHIN ONE HOUR/S TIME.

KEEP TUNED TO NOAA WEATHER RADIO OR OTHER MEDIA OUTLETS FOR THE
LATEST UPDATES CONCERNING TODAY/S SEVERE WEATHER THREAT. UPDATES ARE
ALSO PROMPTLY POSTED ON OUR INTERNET HOMEPAGE AT
HTTP:/WWW.NWS.BNL.GOV/.

THE COLD FRONT WILL SWEEP ACROSS OUR REGION LATER TONIGHT...FOLLOWED
BY PARTIAL CLEARING LATE...AND LESS HUMID WEATHER FOR WEDNESDAY.

WARM...PLEASANT WEATHER SHOULD PREVAIL THROUGH THE CLOSE OF THE WORK
WEEK. THE FOURTH OF JULY SHOULD ALSO FEATURE WARM WEATHER WITH SOME
SUNSHINE AND JUST THE CHANCE FOR AN AFTERNOON SHOWER OR THUNDERSTORM.

MAZZA

Special weather statement, Jun 30, 11:00 AM EDT, 1 hour 15 minutes before

NYZ0067>081-NJ002>006-011-CT005>012-302100-

SEVERE WEATHER OUTLOOK AND WEATHER MAP DISCUSSION FOR
EXTREME SOUTHEASTERN NEW YORK...NORTHEASTERN NEW JERSEY AND
SOUTHERN CONNECTICUT
NATIONAL WEATHER SERVICE NEW YORK NY
1100 AM EDT TUE JUN 30 1998

...ANOTHER ROUND OF STRONG THUNDERSTORMS POSSIBLE LATER TODAY...

A LOW PRESSURE SYSTEM TRACKING EAST ACROSS SOUTHERN ONTARIO TODAY
DRAGGED A WARM FRONT THROUGH OUR REGION THIS MORNING...AND WILL
PUSH  A COLD FRONT THIS EVENING.

THIS WARM FRONT WAS RESPONSIBLE FOR THE ACTIVE WEATHER THIS
MORNING...ESPECIALLY ACROSS CENTRAL LONG ISLAND. THERE...A
PARTICULARLY STRONG THUNDERSTORM PRODUCED HAIL UP TO ONE INCH IN
DIAMETER ALONG WITH STRONG WINDS THAT TOOK OUT MANY TREES FROM
RONKONKOMA TO CORAM IN SUFFOLK COUNTY. THIS AREA WILL BE INVESTIGATED
THIS AFTERNOON FOR A POSSIBLE TORNADO.

SHOWERS AND LESS INTENSE THUNDERSTORMS WERE STILL AFFECTING THE AREA
AS OF LATE THIS MORNING. WHILE THIS ACTIVITY WILL MOVE EAST...OUT OF
THE AREA...EARLY THIS AFTERNOON...ALLOWING A BREAK...EVEN A FEW
PEAKS OF SUN...DURING THE AFTERNOON.

HOWEVER...THE APPROACH OF THE COLD FRONT WILL CAUSE THUNDERSTORMS TO
FIRE UP AGAIN IN AND WEST OF THE AREA LATE THIS AFTERNOON AND THIS
EVENING. THESE THUNDERSTORMS WILL TRACK EAST ACROSS OUR AREA THROUGH
THIS EVENING. THE SEVERITY OF THESE STORMS WILL BE LIMITED BY THE
FIRST ROUND CLOUDS AND RAIN PREVENTED MUCH SUNSHINE THROUGH THE
MORNING. STILL...ANY THUNDERSTORM LATE TODAY CAN PRODUCE STRONG
GUSTY WIND...HAIL...AND CERTAINLY FREQUENT CLOUD TO GROUND LIGHTNING
AND HEAVY RAIN.

ANY SUNSHINE THIS AFTERNOON WILL HELP TO FURTHER DESTABILIZE THE
ATMOSPHERE...FUELING ANY THUNDERSTORMS THAT FORM LATER ON.

IN ADDITION...ANY HEAVY RAIN IN ADDITION TO WHAT FELL THIS MORNING
CAN EASILY CAUSE POOR DRAINAGE FLOODING...ESPECIALLY IN THOSE AREAS
HARDEST HIT THIS MORNING. ONE SUCH AREA IS METROPOLITAN NEW
JERSEY...JUST WEST OF THE CITY...WHERE ABOUT ONE AND ONE HALF INCHES
OF RAIN FELL WITHIN ONE HOUR/S TIME.

KEEP TUNED TO NOAA WEATHER RADIO OR OTHER MEDIA OUTLETS FOR THE
LATEST UPDATES CONCERNING TODAY/S SEVERE WEATHER THREAT. UPDATES ARE
ALSO PROMPTLY POSTED ON OUR INTERNET HOMEPAGE AT
HTTP:/WWW.NWS.BNL.GOV/.

THE COLD FRONT WILL SWEEP ACROSS OUR REGION LATER TONIGHT...FOLLOWED
BY PARTIAL CLEARING LATE...AND LESS HUMID WEATHER FOR WEDNESDAY.

WARM...PLEASANT WEATHER SHOULD PREVAIL THROUGH THE CLOSE OF THE WORK
WEEK. THE FOURTH OF JULY SHOULD ALSO FEATURE WARM WEATHER WITH SOME
SUNSHINE AND JUST THE CHANCE FOR AN AFTERNOON SHOWER OR THUNDERSTORM.

MAZZA

The office that day

Everything else NWS New York, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 30, 8:40 AM EDT	Severe Thunderstorm Warning	OKX	Suffolk	35 min
Jun 30, 6:17 PM EDT	Severe Thunderstorm Warning	OKX	Orange	73 min
Jun 30, 6:48 PM EDT	Tornado Warning	OKX	Orange	32 min
Jun 30, 7:10 PM EDT	Severe Thunderstorm Warning	OKX	Putnam	50 min
Jun 30, 7:36 PM EDT	Severe Thunderstorm Warning	OKX	Rockland	34 min
Jun 30, 7:37 PM EDT	Severe Thunderstorm Warning	OKX	Westchester	63 min
Jun 30, 7:52 PM EDT	Severe Thunderstorm Warning	OKX	Bronx, New York	78 min
Jun 30, 7:52 PM EDT	Severe Thunderstorm Warning	OKX	Kings, Queens	78 min
Jun 30, 7:52 PM EDT	Severe Thunderstorm Warning	OKX	Richmond	78 min

Nearby

Severe Thunderstorm Warnings in New York, 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.